Mycat 开发调试环境配置-开启二次开发之路

Mycat是 数据库分库分表中间件。mycat1.6分库分表特性只能选择其一，不能同时存在，对于特殊应用场景既需要分库有需要分表，这就需要修改mycat的源码来实现了。今次我们来准备一下Mycat的开发调试环境。官网参考地址：http://www.mycat.io/

前期准备

1、环境配置：需要准备jdk、maven、git、STS(eclipse)；这些就不多说了。

2、下载项目源码与配置mycat MySQL主备分库：

mycat是master上安装的，local-mycat是本地代码启动服务连接。

mycat项目已放至svn。

项目配置

mycat启动需要配置schema.xml、rule.xml、server.xml。

修改schema.xml

<?xml version="1.0"?><!DOCTYPE mycat:schema SYSTEM "schema.dtd"><mycat:schema xmlns:mycat="http://io.mycat/">        <schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100">                <table name="t_user"   primaryKey="u_id" autoIncrement="true"   dataNode="dn1" rule="mod-single" />                <table name="t_service" primaryKey="s_id" autoIncrement="true"   dataNode="dn2"  rule="mod-single"/>               <table name="t_location" primaryKey="F_ID" autoIncrement="true"  dataNode="dn1,dn2" rule="mod-long" />        </schema>        <!-- <dataNode name="dn1$0-743" dataHost="localhost1" database="db$0-743"                /> -->        <dataNode name="dn1" dataHost="localhost1" database="m" />        <dataNode name="dn2" dataHost="localhost1" database="n" />        <dataHost name="localhost1" maxCon="1000" minCon="10" balance="1"  writeType="0" dbType="mysql" dbDriver="native" switchType="1"  slaveThreshold="100">                <heartbeat>show slave status</heartbeat>                <!-- can have multi write hosts -->                <writeHost host="hostM1" url="10.0.0.129:3306" user="root"   password="123456">                        <!-- can have multi read hosts -->                        <readHost host="hostS2" url="10.0.0.128:3306" user="root" password="123456" />                </writeHost>                <!-- <writeHost host="hostM2" url="localhost:3316" user="root" password="123456"/> -->        </dataHost></mycat:schema>

配置好逻辑表和数据库节点。

修改rule.xml

<?xml version="1.0" encoding="UTF-8"?><!-- - - Licensed under the Apache License, Version 2.0 (the "License");         - you may not use this file except in compliance with the License. - You         may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0         - - Unless required by applicable law or agreed to in writing, software -         distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT         WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the         License for the specific language governing permissions and - limitations         under the License. --><!DOCTYPE mycat:rule SYSTEM "rule.dtd"><mycat:rule xmlns:mycat="http://io.mycat/">        <tableRule name="rule1">                <rule>                        <columns>id</columns>                        <algorithm>func1</algorithm>                </rule>        </tableRule>        <tableRule name="rule2">                <rule>                        <columns>user_id</columns>                        <algorithm>func1</algorithm>                </rule>        </tableRule>        <tableRule name="sharding-by-intfile">                <rule>                        <columns>sharding_id</columns>                        <algorithm>hash-int</algorithm>                </rule>        </tableRule>        <tableRule name="auto-sharding-long">                <rule>                        <columns>id</columns>                        <algorithm>rang-long</algorithm>                </rule>        </tableRule>        <tableRule name="mod-long">                <rule>                        <columns>id</columns>                        <algorithm>mod-long</algorithm>                </rule>        </tableRule>       <tableRule name="mod-single">                <rule>                        <columns>id</columns>                        <algorithm>mod-single</algorithm>                </rule>        </tableRule>        <tableRule name="sharding-by-murmur">                <rule>                        <columns>id</columns>                        <algorithm>murmur</algorithm>                </rule>        </tableRule>        <tableRule name="crc32slot">                <rule>                        <columns>id</columns>                        <algorithm>crc32slot</algorithm>                </rule>        </tableRule>        <tableRule name="latest-month-calldate">                <rule>                        <columns>calldate</columns>                        <algorithm>latestMonth</algorithm>                </rule>        </tableRule>        <tableRule name="auto-sharding-rang-mod">                <rule>                        <columns>id</columns>                        <algorithm>rang-mod</algorithm>                </rule>        </tableRule>        <tableRule name="jch">                <rule>                        <columns>id</columns>                        <algorithm>jump-consistent-hash</algorithm>                </rule>        </tableRule>        <function name="murmur"                class="io.mycat.route.function.PartitionByMurmurHash">                <property name="seed">0</property><!-- 默认是0 -->                <property name="count">2</property><!-- 要分片的数据库节点数量，必须指定，否则没法分片 -->                <property name="virtualBucketTimes">160</property><!-- 一个实际的数据库节点被映射为这么多虚拟节点，默认是160倍，也就是虚拟节点数是物理节点数的160倍 -->        </function>        <function name="crc32slot"                          class="io.mycat.route.function.PartitionByCRC32PreSlot">                <property name="count">2</property><!-- 要分片的数据库节点数量，必须指定，否则没法分片 -->        </function>        <function name="hash-int"                class="io.mycat.route.function.PartitionByFileMap">                <property name="mapFile">partition-hash-int.txt</property>        </function>        <function name="rang-long"                class="io.mycat.route.function.AutoPartitionByLong">                <property name="mapFile">autopartition-long.txt</property>        </function>        <function name="mod-long" class="io.mycat.route.function.PartitionByMod">                <!-- how many data nodes -->                <property name="count">2</property>        </function>        <function name="mod-single" class="io.mycat.route.function.PartitionByMod">                <!-- how many data nodes -->                <property name="count">1</property>        </function>        <function name="func1" class="io.mycat.route.function.PartitionByLong">                <property name="partitionCount">8</property>                <property name="partitionLength">128</property>        </function>        <function name="latestMonth"                class="io.mycat.route.function.LatestMonthPartion">                <property name="splitOneDay">24</property>        </function>        <function name="partbymonth"                class="io.mycat.route.function.PartitionByMonth">                <property name="dateFormat">yyyy-MM-dd</property>                <property name="sBeginDate">2015-01-01</property>        </function>        <function name="rang-mod" class="io.mycat.route.function.PartitionByRangeMod">                <property name="mapFile">partition-range-mod.txt</property>        </function>        <function name="jump-consistent-hash" class="io.mycat.route.function.PartitionByJumpConsistentHash">                <property name="totalBuckets">3</property>        </function></mycat:rule>

上面用以配置分片规则。

修改server.xml

<?xml version="1.0" encoding="UTF-8"?><!-- - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. --><!DOCTYPE mycat:server SYSTEM "server.dtd"><mycat:server xmlns:mycat="http://io.mycat/"><system><property name="useSqlStat">0</property>  <!-- 1为开启实时统计、0为关闭 --><property name="useGlobleTableCheck">0</property>  <!-- 1为开启全加班一致性检测、0为关闭 --><property name="sequnceHandlerType">2</property>      <!--  <property name="useCompression">1</property>--> <!--1为开启mysql压缩协议-->        <!--  <property name="fakeMySQLVersion">5.6.20</property>--> <!--设置模拟的MySQL版本号--><!-- <property name="processorBufferChunk">40960</property> --><!-- <property name="processors">1</property> <property name="processorExecutor">32</property>  --><!--默认为type 0: DirectByteBufferPool | type 1 ByteBufferArena--><property name="processorBufferPoolType">0</property><!--默认是65535 64K 用于sql解析时最大文本长度 --><!--<property name="maxStringLiteralLength">65535</property>--><!--<property name="sequnceHandlerType">0</property>--><!--<property name="backSocketNoDelay">1</property>--><!--<property name="frontSocketNoDelay">1</property>--><!--<property name="processorExecutor">16</property>--><!--<property name="serverPort">8066</property> <property name="managerPort">9066</property> <property name="idleTimeout">300000</property> <property name="bindIp">0.0.0.0</property> <property name="frontWriteQueueSize">4096</property> <property name="processors">32</property> --><!--分布式事务开关，0为不过滤分布式事务，1为过滤分布式事务（如果分布式事务内只涉及全局表，则不过滤），2为不过滤分布式事务,但是记录分布式事务日志--><property name="handleDistributedTransactions">0</property><!--off heap for merge/order/group/limit      1开启   0关闭--><property name="useOffHeapForMerge">1</property><!--单位为m--><property name="memoryPageSize">1m</property><!--单位为k--><property name="spillsFileBufferSize">1k</property><property name="useStreamOutput">0</property><!--单位为m--><property name="systemReserveMemorySize">384m</property></system><!-- 全局SQL防火墙设置 --><!-- <firewall>    <whitehost>      <host host="127.0.0.1" user="mycat"/>      <host host="127.0.0.2" user="mycat"/>   </whitehost>       <blacklist check="false">       </blacklist></firewall>--><user name="root"><property name="password">123456</property><property name="schemas">TESTDB</property><!-- 表级 DML 权限设置 --><!-- <privileges check="false"><schema name="TESTDB" dml="0110" ><table name="tb01" dml="0000"></table><table name="tb02" dml="1111"></table></schema></privileges> --></user><user name="user"><property name="password">user</property><property name="schemas">TESTDB</property><property name="readOnly">true</property></user></mycat:server>

注：修改root对应的密码即可。

启动MycatStartup.java

运行Run as Application:

2017-07-19 12:50:21,689 [INFO ][main] total resouces of dataHost localhost1 is :2  (io.mycat.backend.datasource.PhysicalDBPool:PhysicalDBPool.java:100) 2017-07-19 12:50:21,749 [INFO ][main] create layer cache pool TableID2DataNodeCache of type encache ,default cache size 10000 ,default expire seconds18000  (io.mycat.cache.CacheService:CacheService.java:125) 2017-07-19 12:50:21,750 [INFO ][main] create child Cache: TESTDB_ORDERS for layered cache TableID2DataNodeCache, size 50000, expire seconds 18000  (io.mycat.cache.DefaultLayedCachePool:DefaultLayedCachePool.java:80) 2017-07-19 12:50:23,129 [INFO ][main] dyna class load from D:\workspace-sts-3.8.4.RELEASE\mycat\src\main\catlet,and auto check for class file modified every 60 seconds  (io.mycat.config.classloader.DynaClassLoader:DynaClassLoader.java:34) 2017-07-19 12:50:23,129 [INFO ][main] ===============================================  (io.mycat.MycatServer:MycatServer.java:258) 2017-07-19 12:50:23,129 [INFO ][main] MyCat is ready to startup ...  (io.mycat.MycatServer:MycatServer.java:259) 2017-07-19 12:50:23,129 [INFO ][main] Startup processors ...,total processors:4,aio thread pool size:8     each process allocated socket buffer pool  bytes ,a page size:2097152  a page's chunk number(PageSize/ChunkSize) is:512  buffer page's number is:80  (io.mycat.MycatServer:MycatServer.java:271) 2017-07-19 12:50:23,129 [INFO ][main] sysconfig params:SystemConfig [processorBufferLocalPercent=100, frontSocketSoRcvbuf=1048576, frontSocketSoSndbuf=4194304, backSocketSoRcvbuf=4194304, backSocketSoSndbuf=1048576, frontSocketNoDelay=1, backSocketNoDelay=1, maxStringLiteralLength=65535, frontWriteQueueSize=2048, bindIp=0.0.0.0, serverPort=8066, managerPort=9066, charset=utf8, processors=4, processorExecutor=8, timerExecutor=2, managerExecutor=2, idleTimeout=1800000, catletClassCheckSeconds=60, sqlExecuteTimeout=300, processorCheckPeriod=1000, dataNodeIdleCheckPeriod=300000, dataNodeHeartbeatPeriod=10000, clusterHeartbeatUser=_HEARTBEAT_USER_, clusterHeartbeatPass=_HEARTBEAT_PASS_, clusterHeartbeatPeriod=5000, clusterHeartbeatTimeout=10000, clusterHeartbeatRetry=10, txIsolation=3, parserCommentVersion=50148, sqlRecordCount=10, bufferPoolPageSize=2097152, bufferPoolChunkSize=4096, bufferPoolPageNumber=80, maxResultSet=524288, bigResultSizeSqlCount=10, bufferUsagePercent=80, flowControlRejectStrategy=0, clearBigSqLResultSetMapMs=600000, defaultMaxLimit=100, sequnceHandlerType=2, sqlInterceptor=io.mycat.server.interceptor.impl.DefaultSqlInterceptor, sqlInterceptorType=select, sqlInterceptorFile=D:\workspace-sts-3.8.4.RELEASE\mycat/logs/sql.txt, mutiNodeLimitType=0, mutiNodePatchSize=100, defaultSqlParser=druidparser, usingAIO=0, packetHeaderSize=4, maxPacketSize=16777216, mycatNodeId=1]  (io.mycat.MycatServer:MycatServer.java:272) 2017-07-19 12:50:23,243 [INFO ][main] useOffHeapForMerge = 1  (io.mycat.memory.MyCatMemory:MyCatMemory.java:53) 2017-07-19 12:50:23,243 [INFO ][main] memoryPageSize = 1m  (io.mycat.memory.MyCatMemory:MyCatMemory.java:54) 2017-07-19 12:50:23,243 [INFO ][main] spillsFileBufferSize = 1k  (io.mycat.memory.MyCatMemory:MyCatMemory.java:55) 2017-07-19 12:50:23,243 [INFO ][main] useStreamOutput = 0  (io.mycat.memory.MyCatMemory:MyCatMemory.java:56) 2017-07-19 12:50:23,243 [INFO ][main] systemReserveMemorySize = 384m  (io.mycat.memory.MyCatMemory:MyCatMemory.java:57) 2017-07-19 12:50:23,263 [INFO ][main] totalNetWorkBufferSize = 160MB  (io.mycat.memory.MyCatMemory:MyCatMemory.java:58) 2017-07-19 12:50:23,263 [INFO ][main] dataNodeSortedTempDir = D:\workspace-sts-3.8.4.RELEASE\mycat  (io.mycat.memory.MyCatMemory:MyCatMemory.java:59) 2017-07-19 12:50:23,279 [INFO ][main] mycat.memory.offHeap.size: 1010MB  (io.mycat.memory.MyCatMemory:MyCatMemory.java:122) 2017-07-19 12:50:23,295 [INFO ][main] using nio network handler   (io.mycat.MycatServer:MycatServer.java:373) 2017-07-19 12:50:24,659 [INFO ][main] $_MyCatManager is started and listening on 9066  (io.mycat.MycatServer:MycatServer.java:389) 2017-07-19 12:50:24,659 [INFO ][main] $_MyCatServer is started and listening on 8066  (io.mycat.MycatServer:MycatServer.java:393) 2017-07-19 12:50:24,660 [INFO ][main] ===============================================  (io.mycat.MycatServer:MycatServer.java:395) 2017-07-19 12:50:24,660 [INFO ][main] Initialize dataHost ...  (io.mycat.MycatServer:MycatServer.java:399) 2017-07-19 12:50:24,660 [INFO ][main] init backend myqsl source ,create connections total 10 for hostM1 index :0  (io.mycat.backend.datasource.PhysicalDBPool:PhysicalDBPool.java:294) 2017-07-19 12:50:24,661 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema n  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:24,662 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema m  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:24,662 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema n  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:24,662 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema m  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:24,665 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema n  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:24,665 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema m  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:24,666 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema n  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:24,666 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema m  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:24,666 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema n  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:24,666 [INFO ][main] no ilde connection in pool,create new connection for hostM1 of schema m  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:25,547 [INFO ][$_NIOREACTOR-3-RW] connected successfuly MySQLConnection [id=7, lastTime=1500439825547, user=root, schema=m, old shema=m, borrowed=true, fromSlaveDB=false, threadId=26, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,547 [INFO ][$_NIOREACTOR-1-RW] connected successfuly MySQLConnection [id=1, lastTime=1500439825547, user=root, schema=m, old shema=m, borrowed=true, fromSlaveDB=false, threadId=24, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,548 [INFO ][$_NIOREACTOR-2-RW] connected successfuly MySQLConnection [id=6, lastTime=1500439825547, user=root, schema=n, old shema=n, borrowed=true, fromSlaveDB=false, threadId=25, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,793 [INFO ][$_NIOREACTOR-2-RW] connected successfuly MySQLConnection [id=2, lastTime=1500439825793, user=root, schema=m, old shema=m, borrowed=true, fromSlaveDB=false, threadId=30, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,793 [INFO ][$_NIOREACTOR-3-RW] connected successfuly MySQLConnection [id=3, lastTime=1500439825793, user=root, schema=m, old shema=m, borrowed=true, fromSlaveDB=false, threadId=28, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,795 [INFO ][$_NIOREACTOR-0-RW] connected successfuly MySQLConnection [id=8, lastTime=1500439825795, user=root, schema=n, old shema=n, borrowed=true, fromSlaveDB=false, threadId=31, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,795 [INFO ][$_NIOREACTOR-1-RW] connected successfuly MySQLConnection [id=5, lastTime=1500439825795, user=root, schema=m, old shema=m, borrowed=true, fromSlaveDB=false, threadId=27, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,796 [INFO ][$_NIOREACTOR-0-RW] connected successfuly MySQLConnection [id=4, lastTime=1500439825796, user=root, schema=n, old shema=n, borrowed=true, fromSlaveDB=false, threadId=29, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,808 [INFO ][$_NIOREACTOR-1-RW] connected successfuly MySQLConnection [id=9, lastTime=1500439825808, user=root, schema=n, old shema=n, borrowed=true, fromSlaveDB=false, threadId=32, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,810 [INFO ][$_NIOREACTOR-2-RW] connected successfuly MySQLConnection [id=10, lastTime=1500439825810, user=root, schema=n, old shema=n, borrowed=true, fromSlaveDB=false, threadId=33, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.GetConnectionHandler:GetConnectionHandler.java:67) 2017-07-19 12:50:25,876 [INFO ][main] init result :finished 10 success 10 target count:10  (io.mycat.backend.datasource.PhysicalDBPool:PhysicalDBPool.java:319) 2017-07-19 12:50:25,876 [INFO ][main] localhost1 index:0 init success  (io.mycat.backend.datasource.PhysicalDBPool:PhysicalDBPool.java:265) 2017-07-19 12:50:25,876 [INFO ][main] save DataHost index  localhost1 cur index 0  (io.mycat.MycatServer:MycatServer.java:557) MyCAT Server startup successfully. see logs in logs/mycat.log2017-07-19 12:50:28,061 [INFO ][Timer1] create connections ,because idle connection not enough ,cur is 0, minCon is 10 for hostS2  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:299) 2017-07-19 12:50:28,076 [INFO ][Timer1] no ilde connection in pool,create new connection for hostS2 of schema n  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:413) 2017-07-19 12:50:28,293 [INFO ][$_NIOREACTOR-3-RW] connectionAcquired MySQLConnection [id=11, lastTime=1500439828275, user=root, schema=n, old shema=n, borrowed=false, fromSlaveDB=true, threadId=22, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.128, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.NewConnectionRespHandler:NewConnectionRespHandler.java:45) 2017-07-19 12:50:28,319 [INFO ][$_NIOREACTOR-2-RW] connectionAcquired MySQLConnection [id=14, lastTime=1500439828316, user=root, schema=m, old shema=m, borrowed=false, fromSlaveDB=true, threadId=25, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.128, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.NewConnectionRespHandler:NewConnectionRespHandler.java:45) 2017-07-19 12:50:28,322 [INFO ][$_NIOREACTOR-0-RW] connectionAcquired MySQLConnection [id=12, lastTime=1500439828316, user=root, schema=n, old shema=n, borrowed=false, fromSlaveDB=true, threadId=23, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.128, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.NewConnectionRespHandler:NewConnectionRespHandler.java:45) 2017-07-19 12:53:16,500 [INFO ][$_NIOREACTOR-3-RW] ServerConnection [id=1, schema=null, host=192.168.1.4, user=root,txIsolation=3, autocommit=true, schema=null]'root' login success  (io.mycat.net.handler.FrontendAuthenticator:FrontendAuthenticator.java:194) 2017-07-19 12:53:17,663 [INFO ][$_NIOREACTOR-3-RW] close connection,reason:quit cmd ,ServerConnection [id=1, schema=null, host=192.168.1.4, user=root,txIsolation=3, autocommit=true, schema=null]  (io.mycat.net.AbstractConnection:AbstractConnection.java:508) 2017-07-19 12:53:20,226 [INFO ][$_NIOREACTOR-0-RW] ServerConnection [id=2, schema=null, host=192.168.1.4, user=root,txIsolation=3, autocommit=true, schema=null]'root' login success  (io.mycat.net.handler.FrontendAuthenticator:FrontendAuthenticator.java:194) 2017-07-19 12:53:21,555 [INFO ][$_NIOREACTOR-1-RW] ServerConnection [id=3, schema=null, host=192.168.1.4, user=root,txIsolation=3, autocommit=true, schema=null]'root' login success  (io.mycat.net.handler.FrontendAuthenticator:FrontendAuthenticator.java:194) 2017-07-19 12:53:24,426 [INFO ][$_NIOREACTOR-1-RW] close connection,reason:quit cmd ,ServerConnection [id=3, schema=TESTDB, host=192.168.1.4, user=root,txIsolation=3, autocommit=true, schema=TESTDB]  (io.mycat.net.AbstractConnection:AbstractConnection.java:508) 2017-07-19 12:53:24,427 [INFO ][$_NIOREACTOR-0-RW] close connection,reason:quit cmd ,ServerConnection [id=2, schema=null, host=192.168.1.4, user=root,txIsolation=3, autocommit=true, schema=null]  (io.mycat.net.AbstractConnection:AbstractConnection.java:508) 2017-07-19 12:53:25,222 [INFO ][$_NIOREACTOR-2-RW] ServerConnection [id=4, schema=null, host=192.168.1.4, user=root,txIsolation=3, autocommit=true, schema=null]'root' login success  (io.mycat.net.handler.FrontendAuthenticator:FrontendAuthenticator.java:194) 2017-07-19 12:53:26,713 [INFO ][$_NIOREACTOR-3-RW] ServerConnection [id=5, schema=null, host=192.168.1.4, user=root,txIsolation=3, autocommit=true, schema=null]'root' login success  (io.mycat.net.handler.FrontendAuthenticator:FrontendAuthenticator.java:194) 2017-07-19 12:55:28,039 [INFO ][Timer0] create connections ,because idle connection not enough ,cur is 5, minCon is 10 for hostM1  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:299) 2017-07-19 12:55:28,040 [INFO ][Timer0] create connections ,because idle connection not enough ,cur is 4, minCon is 10 for hostS2  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:299) 2017-07-19 12:55:28,143 [INFO ][$_NIOREACTOR-0-RW] connectionAcquired MySQLConnection [id=15, lastTime=1500440128137, user=root, schema=m, old shema=m, borrowed=false, fromSlaveDB=true, threadId=26, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.128, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.NewConnectionRespHandler:NewConnectionRespHandler.java:45) 2017-07-19 12:55:28,153 [INFO ][$_NIOREACTOR-2-RW] connectionAcquired MySQLConnection [id=17, lastTime=1500440128137, user=root, schema=n, old shema=n, borrowed=false, fromSlaveDB=true, threadId=27, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.128, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.NewConnectionRespHandler:NewConnectionRespHandler.java:45) 2017-07-19 12:55:28,172 [INFO ][$_NIOREACTOR-1-RW] connectionAcquired MySQLConnection [id=16, lastTime=1500440128157, user=root, schema=n, old shema=n, borrowed=false, fromSlaveDB=false, threadId=34, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.NewConnectionRespHandler:NewConnectionRespHandler.java:45) 2017-07-19 13:00:28,040 [INFO ][Timer0] too many ilde cons ,close some for datasouce  hostM1  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:280) 2017-07-19 13:00:28,043 [INFO ][Timer0] close connection,reason:too many idle con ,MySQLConnection [id=1, lastTime=1500440128058, user=root, schema=m, old shema=m, borrowed=false, fromSlaveDB=false, threadId=24, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.net.AbstractConnection:AbstractConnection.java:508) 2017-07-19 13:00:28,044 [INFO ][Timer0] create connections ,because idle connection not enough ,cur is 5, minCon is 10 for hostS2  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:299) 2017-07-19 13:00:28,063 [INFO ][$_NIOREACTOR-3-RW] connectionAcquired MySQLConnection [id=18, lastTime=1500440428058, user=root, schema=n, old shema=n, borrowed=false, fromSlaveDB=true, threadId=28, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.128, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.NewConnectionRespHandler:NewConnectionRespHandler.java:45) 2017-07-19 13:05:28,044 [INFO ][Timer0] create connections ,because idle connection not enough ,cur is 6, minCon is 10 for hostM1  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:299) 2017-07-19 13:05:28,044 [INFO ][Timer0] create connections ,because idle connection not enough ,cur is 5, minCon is 10 for hostS2  (io.mycat.backend.datasource.PhysicalDatasource:PhysicalDatasource.java:299) 2017-07-19 13:05:28,119 [INFO ][$_NIOREACTOR-0-RW] connectionAcquired MySQLConnection [id=19, lastTime=1500440728101, user=root, schema=n, old shema=n, borrowed=false, fromSlaveDB=false, threadId=35, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.129, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.NewConnectionRespHandler:NewConnectionRespHandler.java:45) 2017-07-19 13:05:28,120 [INFO ][$_NIOREACTOR-1-RW] connectionAcquired MySQLConnection [id=20, lastTime=1500440728101, user=root, schema=n, old shema=n, borrowed=false, fromSlaveDB=true, threadId=29, charset=latin1, txIsolation=3, autocommit=true, attachment=null, respHandler=null, host=10.0.0.128, port=3306, statusSync=null, writeQueue=0, modifiedSQLExecuted=false]  (io.mycat.backend.mysql.nio.handler.NewConnectionRespHandler:NewConnectionRespHandler.java:45) 

IDE异常处理

在配置过程中遇到：Archive for required library: 'D:/DEVELOPERS/maven/apache-maven-3.5.0/repository/mysql/mysql-connector-java/5.1.35/mysql-connector-java-5.1.35.jar' in project 'mycat' cannot be read or is not a valid ZIP file    mycat        Build path    Build Path Problem

处理方法：删除maven下载目录，编辑pom.xml使之重新下载jar包。

Mycat开发示例修改源码支持按天分库

这里我们只需要修改<table>标签的subTables属性的封装就可以实现。

Java源码修改

TableConfig.java 修改代码部分：

public TableConfig(String name, String primaryKey, boolean autoIncrement,boolean needAddLimit, int tableType,String dataNode,Set<String> dbType, RuleConfig rule, boolean ruleRequired,TableConfig parentTC, boolean isChildTable, String joinKey,String parentKey,String subTables) {if (name == null) {throw new IllegalArgumentException("table name is null");} else if (dataNode == null) {throw new IllegalArgumentException("dataNode name is null");}this.primaryKey = primaryKey;this.autoIncrement = autoIncrement;this.needAddLimit=needAddLimit;this.tableType = tableType;this.dbTypes=dbType;if (ruleRequired && rule == null) {throw new IllegalArgumentException("ruleRequired but rule is null");}this.name = name.toUpperCase();String theDataNodes[] = SplitUtil.split(dataNode, ',', '$', '-');if (theDataNodes == null || theDataNodes.length <= 0) {throw new IllegalArgumentException("invalid table dataNodes: " + dataNode);}dataNodes = new ArrayList<String>(theDataNodes.length);for (String dn : theDataNodes) {dataNodes.add(dn);}if(subTables!=null && !subTables.equals("")){// =====新增按日分表策略====start====String str=subTables.substring(subTables.indexOf("$")+1, subTables.length());String startChar="(";String splitChar=",";String endChar=")";boolean valid=str.contains(startChar)&&str.contains(splitChar)&&str.contains(endChar);// =====新增按日分表策略====end====if(!valid){// 原始按顺序分表方式String sTables[] = SplitUtil.split(subTables, ',', '$', '-');if (sTables == null || sTables.length <= 0) {throw new IllegalArgumentException("invalid table subTables");}this.distTables = new ArrayList<String>(sTables.length);for (String table : sTables) {distTables.add(table);}}else{// 按日分表方式（表需要自己创建好）str=str.substring(1, str.length()-1);String [] strDates=str.split(",");if(strDates.length!=2) {throw new IllegalArgumentException("invalid table subTables:array's length is little than 2 ,you should set array like $(20170717,20180716)");}String dateStart=strDates[0];//开始日期String dateEnd=strDates[1];// 结束日期if(dateStart.equals(dateEnd)){throw new IllegalArgumentException("invalid table subTables:array's start date can't be equal with end date,you should set array like $(20170717,20180716)");}String  dateFormat="yyyyMMdd";Date begin=null;Date end=null;try {begin=DateUtils.parseDate(dateStart, dateFormat);end=DateUtils.parseDate(dateEnd, dateFormat);} catch (ParseException e) {throw new IllegalArgumentException("invalid table subTables:array's  date format is incorrect,you should set array like $(20170717,20180716)");}// 生成对应的按日期表集合List<Date> dates=DateUtils.getBetweenDates(begin, end);this.distTables = new ArrayList<String>(dates.size());String tablePrex=subTables.substring(0, subTables.indexOf("$"));for (Date date : dates) {String table=tablePrex+DateUtils.getStrFormTime(dateFormat, date);System.out.println(table);distTables.add(table);}}}else{this.distTables = new ArrayList<String>();}this.rule = rule;this.partitionColumn = (rule == null) ? null : rule.getColumn();partionKeyIsPrimaryKey=(partitionColumn==null)?primaryKey==null:partitionColumn.equals(primaryKey);this.ruleRequired = ruleRequired;this.childTable = isChildTable;this.parentTC = parentTC;this.joinKey = joinKey;this.parentKey = parentKey;if (parentTC != null) {locateRTableKeySql = genLocateRootParentSQL();secondLevel = (parentTC.parentTC == null);} else {locateRTableKeySql = null;secondLevel = false;}}

日期工具类

DateUtils.java

package io.mycat.config.util;import java.sql.Timestamp;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Calendar;import java.util.Date;import java.util.List;import org.apache.log4j.Logger;public class DateUtils extends org.apache.commons.lang.time.DateUtils {public static final String TIME_WITH_MINUTE_PATTERN = "HH:mm";public static final long DAY_MILLI = 24 * 60 * 60 * 1000; // 一天的MilliSecond// 取值范围：就是临界点包不包含等于public final static int LEFT_OPEN_RIGHT_OPEN = 1;public final static int LEFT_CLOSE_RIGHT_OPEN = 2;public final static int LEFT_OPEN_RIGHT_CLOSE = 3;public final static int LEFT_CLOSE_RIGHT_CLOSE = 4;/** * 比较日期的模式 --只比较日期，不比较时间 */public final static int COMP_MODEL_DATE = 1;/** * 比较日期的模式 --只比较时间，不比较日期 */public final static int COMP_MODEL_TIME = 2;/** * 比较日期的模式 --比较日期，也比较时间 */public final static int COMP_MODEL_DATETIME = 3;private static Logger logger = Logger.getLogger(DateUtils.class);/** * 要用到的DATE Format的定义 */public static String DATE_FORMAT_DATEONLY = "yyyy-MM-dd"; // 年/月/日public static String DATE_FORMAT_DATETIME = "yyyy-MM-dd HH:mm:ss"; // 年/月/日public static SimpleDateFormat sdfDateTime = new SimpleDateFormat(DateUtils.DATE_FORMAT_DATETIME);public static SimpleDateFormat sdfDateOnly = new SimpleDateFormat(DateUtils.DATE_FORMAT_DATEONLY);public static final SimpleDateFormat formatTimestamp = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");public static final SimpleDateFormat SHORTDATEFORMAT = new SimpleDateFormat("yyyyMMdd");public static final SimpleDateFormat SHORT_DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd");public static final SimpleDateFormat LONG_DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");public static final SimpleDateFormat LONG_DATE_FORMAT_SSS = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");public static final SimpleDateFormat HMS_FORMAT = new SimpleDateFormat("HH:mm:ss");/** * 根据日期格式字符串解析日期字符串 * * @param str *            日期字符串 * @param parsePatterns *            日期格式字符串 * @return 解析后日期 * @throws ParseException */public static Date parseDate(String str, String parsePatterns) throws ParseException {return parseDate(str, new String[] { parsePatterns });}/** * 根据单位字段比较两个日期 * * @param date *            日期1 * @param otherDate *            日期2 * @param withUnit *            单位字段，从Calendar field取值 * @return 等于返回0值, 大于返回大于0的值 小于返回小于0的值 */public static int compareDate(Date date, Date otherDate, int withUnit) {Calendar dateCal = Calendar.getInstance();dateCal.setTime(date);Calendar otherDateCal = Calendar.getInstance();otherDateCal.setTime(otherDate);switch (withUnit) {case Calendar.YEAR:dateCal.clear(Calendar.MONTH);otherDateCal.clear(Calendar.MONTH);case Calendar.MONTH:dateCal.set(Calendar.DATE, 1);otherDateCal.set(Calendar.DATE, 1);case Calendar.DATE:dateCal.set(Calendar.HOUR_OF_DAY, 0);otherDateCal.set(Calendar.HOUR_OF_DAY, 0);case Calendar.HOUR:dateCal.clear(Calendar.MINUTE);otherDateCal.clear(Calendar.MINUTE);case Calendar.MINUTE:dateCal.clear(Calendar.SECOND);otherDateCal.clear(Calendar.SECOND);case Calendar.SECOND:dateCal.clear(Calendar.MILLISECOND);otherDateCal.clear(Calendar.MILLISECOND);case Calendar.MILLISECOND:break;default:throw new IllegalArgumentException("withUnit 单位字段 " + withUnit + " 不合法！！");}return dateCal.compareTo(otherDateCal);}/** * 根据单位字段比较两个时间 * * @param date *            时间1 * @param otherDate *            时间2 * @param withUnit *            单位字段，从Calendar field取值 * @return 等于返回0值, 大于返回大于0的值 小于返回小于0的值 */public static int compareTime(Date date, Date otherDate, int withUnit) {Calendar dateCal = Calendar.getInstance();dateCal.setTime(date);Calendar otherDateCal = Calendar.getInstance();otherDateCal.setTime(otherDate);dateCal.clear(Calendar.YEAR);dateCal.clear(Calendar.MONTH);dateCal.set(Calendar.DATE, 1);otherDateCal.clear(Calendar.YEAR);otherDateCal.clear(Calendar.MONTH);otherDateCal.set(Calendar.DATE, 1);switch (withUnit) {case Calendar.HOUR:dateCal.clear(Calendar.MINUTE);otherDateCal.clear(Calendar.MINUTE);case Calendar.MINUTE:dateCal.clear(Calendar.SECOND);otherDateCal.clear(Calendar.SECOND);case Calendar.SECOND:dateCal.clear(Calendar.MILLISECOND);otherDateCal.clear(Calendar.MILLISECOND);case Calendar.MILLISECOND:break;default:throw new IllegalArgumentException("withUnit 单位字段 " + withUnit + " 不合法！！");}return dateCal.compareTo(otherDateCal);}/** * 获得当前的日期毫秒 * * @return */public static long nowTimeMillis() {return System.currentTimeMillis();}/** * 获得当前的时间戳 * * @return */public static Timestamp nowTimeStamp() {return new Timestamp(nowTimeMillis());}/** * yyyy-MM-dd 当前日期 * */public static String getReqDate() {return SHORTDATEFORMAT.format(new Date());}/** * yyyy-MM-dd 传入日期 * * @param date * @return */public static String getReqDate(Date date) {return SHORT_DATE_FORMAT.format(date);}/** * yyyyMMdd 传入日期 * * @param date * @return */public static String getReqDateyyyyMMdd(Date date) {return SHORTDATEFORMAT.format(date);}/** * yyyy-MM-dd 传入的时间戳 * * @param date * @return */public static String TimestampToDateStr(Timestamp tmp) {return SHORT_DATE_FORMAT.format(tmp);}/** * HH:mm:ss 当前时间 * * @return */public static String getReqTime() {return HMS_FORMAT.format(new Date());}/** * 得到时间戳格式字串 * * @param date * @return */public static String getTimeStampStr(Date date) {return LONG_DATE_FORMAT.format(date);}/** * 得到长日期格式字串 * * @return */public static String getLongDateStr() {return LONG_DATE_FORMAT.format(new Date());}public static String getLongDateStr(Timestamp time) {return LONG_DATE_FORMAT.format(time);}/** * 得到短日期格式字串 * * @param date * @return */public static String getShortDateStr(Date date) {return SHORT_DATE_FORMAT.format(date);}public static String getShortDateStr() {return SHORT_DATE_FORMAT.format(new Date());}/** * 计算 second 秒后的时间 * * @param date * @param second * @return */public static Date addSecond(Date date, int second) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);;calendar.add(Calendar.SECOND, second);return calendar.getTime();}/** * 计算 minute 分钟后的时间 * * @param date * @param minute * @return */public static Date addMinute(Date date, int minute) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.MINUTE, minute);return calendar.getTime();}/** * 计算 hour 小时后的时间 * * @param date * @param minute * @return */public static Date addHour(Date date, int hour) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.HOUR, hour);return calendar.getTime();}/** * 得到day的起始时间点。 * * @param date * @return */public static Date getDayStart(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);return calendar.getTime();}/** * 得到day的终止时间点. * * @param date * @return */public static Date getDayEnd(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);calendar.add(Calendar.DAY_OF_MONTH, 1);calendar.add(Calendar.MILLISECOND, -1);return calendar.getTime();}/** * 计算 day 天后的时间 * * @param date * @param day * @return */public static Date addDay(Date date, int day) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.DAY_OF_MONTH, day);return calendar.getTime();}/** * 得到month的终止时间点. * * @param date * @return */public static Date getMonthEnd(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.DAY_OF_MONTH, 1);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);calendar.add(Calendar.MONTH, 1);calendar.add(Calendar.MILLISECOND, -1);return calendar.getTime();}public static Date addYear(Date date, int year) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.add(Calendar.DAY_OF_YEAR, 365 * year);return calendar.getTime();}public static Timestamp strToTimestamp(String dateStr) {return Timestamp.valueOf(dateStr);}public static Timestamp strToTimestamp(Date date) {return Timestamp.valueOf(formatTimestamp.format(date));}public static Timestamp getCurTimestamp() {return Timestamp.valueOf(formatTimestamp.format(new Date()));}/** * 取得两个日期之间的日数 * * @return t1到t2间的日数，如果t2 在 t1之后，返回正数，否则返回负数 */public static long daysBetween(java.sql.Timestamp t1, java.sql.Timestamp t2) {return (t2.getTime() - t1.getTime()) / DAY_MILLI;}/** * 返回java.sql.Timestamp型的SYSDATE * * @return java.sql.Timestamp型的SYSDATE * @since 1.0 * @history */public static java.sql.Timestamp getSysDateTimestamp() {return new java.sql.Timestamp(System.currentTimeMillis());}/** * 利用缺省的Date格式(YYYY/MM/DD)转换String到java.sql.Timestamp * * @param sDate *            Date string * @return * @since 1.0 * @history */public static java.sql.Timestamp toSqlTimestamp(String sDate) {if (sDate == null) {return null;}if (sDate.length() != DateUtils.DATE_FORMAT_DATEONLY.length()&& sDate.length() != DateUtils.DATE_FORMAT_DATETIME.length()) {return null;}return toSqlTimestamp(sDate, sDate.length() == DateUtils.DATE_FORMAT_DATEONLY.length()? DateUtils.DATE_FORMAT_DATEONLY : DateUtils.DATE_FORMAT_DATETIME);}/** * 利用缺省的Date格式(YYYY/MM/DD hh:mm:ss)转化String到java.sql.Timestamp * * @param sDate *            Date string * @param sFmt *            Date format DATE_FORMAT_DATEONLY/DATE_FORMAT_DATETIME * @return * @since 1.0 * @history */public static java.sql.Timestamp toSqlTimestamp(String sDate, String sFmt) {String temp = null;if (sDate == null || sFmt == null) {return null;}if (sDate.length() != sFmt.length()) {return null;}if (sFmt.equals(DateUtils.DATE_FORMAT_DATETIME)) {temp = sDate.replace('/', '-');temp = temp + ".000000000";} else if (sFmt.equals(DateUtils.DATE_FORMAT_DATEONLY)) {temp = sDate.replace('/', '-');temp = temp + " 00:00:00.000000000";} else {return null;}return java.sql.Timestamp.valueOf(temp);}/** * 以YYYY/MM/DD HH24:MI:SS格式返回系统日期时间 * * @return 系统日期时间 * @since 1.0 * @history */public static String getSysDateTimeString() {return toString(new java.util.Date(System.currentTimeMillis()), DateUtils.sdfDateTime);}/** * 根据指定的Format转化java.util.Date到String * * @param dt *            java.util.Date instance * @param sFmt *            Date format , DATE_FORMAT_DATEONLY or DATE_FORMAT_DATETIME * @return * @since 1.0 * @history */public static String toString(java.util.Date dt, String sFmt) {if (dt == null || sFmt == null || "".equals(sFmt)) {return "";}return toString(dt, new SimpleDateFormat(sFmt));}/** * 利用指定SimpleDateFormat instance转换java.util.Date到String * * @param dt *            java.util.Date instance * @param formatter *            SimpleDateFormat Instance * @return * @since 1.0 * @history */private static String toString(java.util.Date dt, SimpleDateFormat formatter) {String sRet = null;try {sRet = formatter.format(dt).toString();} catch (Exception e) {logger.error(e);sRet = null;}return sRet;}/** * 转换java.sql.Timestamp到String，格式为YYYY/MM/DD HH24:MI * * @param dt *            java.sql.Timestamp instance * @return * @since 1.0 * @history */public static String toSqlTimestampString2(java.sql.Timestamp dt) {if (dt == null) {return null;}String temp = toSqlTimestampString(dt, DateUtils.DATE_FORMAT_DATETIME);return temp.substring(0, 16);}public static String toString(java.sql.Timestamp dt) {return dt == null ? "" : toSqlTimestampString2(dt);}/** * 根据指定的格式转换java.sql.Timestamp到String * * @param dt *            java.sql.Timestamp instance * @param sFmt *            Date 格式，DATE_FORMAT_DATEONLY/DATE_FORMAT_DATETIME/ *            DATE_FORMAT_SESSION * @return * @since 1.0 * @history */public static String toSqlTimestampString(java.sql.Timestamp dt, String sFmt) {String temp = null;String out = null;if (dt == null || sFmt == null) {return null;}temp = dt.toString();if (sFmt.equals(DateUtils.DATE_FORMAT_DATETIME) || // "YYYY/MM/DD// HH24:MI:SS"sFmt.equals(DateUtils.DATE_FORMAT_DATEONLY)) { // YYYY/MM/DDtemp = temp.substring(0, sFmt.length());out = temp.replace('/', '-');// }else if( sFmt.equals (DateUtils.DATE_FORMAT_SESSION ) ){// //Session// out =// temp.substring(0,4)+temp.substring(5,7)+temp.substring(8,10);// out += temp.substring(12,14) + temp.substring(15,17);}return out;}// 得到当前日期的星期public static int getWeek() {Calendar cal = Calendar.getInstance();cal.setTime(new Date());int w = cal.get(Calendar.DAY_OF_WEEK);return w;}/** * Timestamp 格式转换成yyyy-MM-dd timestampToSql(Timestamp 格式转换成yyyy-MM-dd) * * @param timestamp *            时间 * @return createTimeStr yyyy-MM-dd 时间 * @Exception 异常对象 * @since V1.0 */public static String timestampToStringYMD(java.sql.Timestamp timestamp) {SimpleDateFormat sdf = new SimpleDateFormat(DateUtils.DATE_FORMAT_DATEONLY);String createTimeStr = sdf.format(timestamp);return createTimeStr;}/** * 判断一个时间是否在某个时间区间内 * * @param now *            目标时间 * @param start *            时间区间开始 * @param end *            时间区间结束 * @param model *            区间模式 * @return 是否在区间内 */public static boolean isBetween(Date now, Date start, Date end, int model) {return isBetween(now, start, end, model, LEFT_OPEN_RIGHT_OPEN);}/** * 判断时间是否在制定的时间段之类 * * @param date *            需要判断的时间 * @param start *            时间段的起始时间 * @param end *            时间段的截止时间 * @param interModel *            区间的模式 * *            <pre>* 取值：* LEFT_OPEN_RIGHT_OPEN* LEFT_CLOSE_RIGHT_OPEN* LEFT_OPEN_RIGHT_CLOSE* LEFT_CLOSE_RIGHT_CLOSE *            </pre> *  * @param compModel *            比较的模式 * *            <pre>* 取值：* COMP_MODEL_DATE 只比较日期，不比较时间* COMP_MODEL_TIME 只比较时间，不比较日期* COMP_MODEL_DATETIME 比较日期，也比较时间 *            </pre> *  * @return */public static boolean isBetween(Date date, Date start, Date end, int interModel, int compModel) {if (date == null || start == null || end == null) {throw new IllegalArgumentException("日期不能为空");}SimpleDateFormat format = null;switch (compModel) {case COMP_MODEL_DATE: {format = new SimpleDateFormat("yyyyMMdd");break;}case COMP_MODEL_TIME: {format = new SimpleDateFormat("HHmmss");break;}case COMP_MODEL_DATETIME: {format = new SimpleDateFormat("yyyyMMddHHmmss");break;}default: {throw new IllegalArgumentException(String.format("日期的比较模式[%d]有误", compModel));}}long dateNumber = Long.parseLong(format.format(date));long startNumber = Long.parseLong(format.format(start));long endNumber = Long.parseLong(format.format(end));switch (interModel) {case LEFT_OPEN_RIGHT_OPEN: {if (dateNumber <= startNumber || dateNumber >= endNumber) {return false;} else {return true;}}case LEFT_CLOSE_RIGHT_OPEN: {if (dateNumber < startNumber || dateNumber >= endNumber) {return false;} else {return true;}}case LEFT_OPEN_RIGHT_CLOSE: {if (dateNumber <= startNumber || dateNumber > endNumber) {return false;} else {return true;}}case LEFT_CLOSE_RIGHT_CLOSE: {if (dateNumber < startNumber || dateNumber > endNumber) {return false;} else {return true;}}default: {throw new IllegalArgumentException(String.format("日期的区间模式[%d]有误", interModel));}}}/** * 得到当前周起始时间 * * @param date * @return */public static Date getWeekStart(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.get(Calendar.WEEK_OF_YEAR);int firstDay = calendar.getFirstDayOfWeek();calendar.set(Calendar.DAY_OF_WEEK, firstDay);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);return calendar.getTime();}/** * 得到当前周截止时间 * * @param date * @return */public static Date getWeekEnd(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.get(Calendar.WEEK_OF_YEAR);int firstDay = calendar.getFirstDayOfWeek();calendar.set(Calendar.DAY_OF_WEEK, 8 - firstDay);calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);calendar.set(Calendar.MILLISECOND, 0);return calendar.getTime();}/** * 得到当月起始时间 * * @param date * @return */public static Date getMonthStart(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.DAY_OF_MONTH, 1);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);return calendar.getTime();}/** * 得到当前年起始时间 * * @param date * @return */public static Date getYearStart(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.YEAR, calendar.get(Calendar.YEAR));calendar.set(Calendar.MONTH, 0);calendar.set(Calendar.DAY_OF_MONTH, 1);calendar.set(Calendar.HOUR_OF_DAY, 0);calendar.set(Calendar.MINUTE, 0);calendar.set(Calendar.SECOND, 0);calendar.set(Calendar.MILLISECOND, 0);return calendar.getTime();}/** * 得到当前年最后一天 * * @param date * @return */public static Date getYearEnd(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.YEAR, calendar.get(Calendar.YEAR));calendar.set(Calendar.MONTH, 11);calendar.set(Calendar.DAY_OF_MONTH, 31);calendar.set(Calendar.HOUR_OF_DAY, 23);calendar.set(Calendar.MINUTE, 59);calendar.set(Calendar.SECOND, 59);calendar.set(Calendar.MILLISECOND, 0);return calendar.getTime();}/** * 取得月天数 * * @param date * @return */public static int getDayOfMonth(Date date) {Calendar c = Calendar.getInstance();c.setTime(date);return c.getActualMaximum(Calendar.DAY_OF_MONTH);}/** * 取得月第一天 * * @param date * @return */public static Date getFirstDateOfMonth(Date date) {Calendar c = Calendar.getInstance();c.setTime(date);c.set(Calendar.DAY_OF_MONTH, c.getActualMinimum(Calendar.DAY_OF_MONTH));return c.getTime();}/** * 取得月最后一天 * * @param date * @return */public static Date getLastDateOfMonth(Date date) {Calendar c = Calendar.getInstance();c.setTime(date);c.set(Calendar.DAY_OF_MONTH, c.getActualMaximum(Calendar.DAY_OF_MONTH));return c.getTime();}/** * 取得季度第一天 * * @param date * @return */public static Date getSeasonStart(Date date) {return getDayStart(getFirstDateOfMonth(getSeasonDate(date)[0]));}/** * 取得季度最后一天 * * @param date * @return */public static Date getSeasonEnd(Date date) {return getDayEnd(getLastDateOfMonth(getSeasonDate(date)[2]));}/** * 取得季度月 * * @param date * @return */public static Date[] getSeasonDate(Date date) {Date[] season = new Date[3];Calendar c = Calendar.getInstance();c.setTime(date);int nSeason = getSeason(date);if (nSeason == 1) {// 第一季度c.set(Calendar.MONTH, Calendar.JANUARY);season[0] = c.getTime();c.set(Calendar.MONTH, Calendar.FEBRUARY);season[1] = c.getTime();c.set(Calendar.MONTH, Calendar.MARCH);season[2] = c.getTime();} else if (nSeason == 2) {// 第二季度c.set(Calendar.MONTH, Calendar.APRIL);season[0] = c.getTime();c.set(Calendar.MONTH, Calendar.MAY);season[1] = c.getTime();c.set(Calendar.MONTH, Calendar.JUNE);season[2] = c.getTime();} else if (nSeason == 3) {// 第三季度c.set(Calendar.MONTH, Calendar.JULY);season[0] = c.getTime();c.set(Calendar.MONTH, Calendar.AUGUST);season[1] = c.getTime();c.set(Calendar.MONTH, Calendar.SEPTEMBER);season[2] = c.getTime();} else if (nSeason == 4) {// 第四季度c.set(Calendar.MONTH, Calendar.OCTOBER);season[0] = c.getTime();c.set(Calendar.MONTH, Calendar.NOVEMBER);season[1] = c.getTime();c.set(Calendar.MONTH, Calendar.DECEMBER);season[2] = c.getTime();}return season;}/** * * 1 第一季度 2 第二季度 3 第三季度 4 第四季度 * * @param date * @return */public static int getSeason(Date date) {int season = 0;Calendar c = Calendar.getInstance();c.setTime(date);int month = c.get(Calendar.MONTH);switch (month) {case Calendar.JANUARY:case Calendar.FEBRUARY:case Calendar.MARCH:season = 1;break;case Calendar.APRIL:case Calendar.MAY:case Calendar.JUNE:season = 2;break;case Calendar.JULY:case Calendar.AUGUST:case Calendar.SEPTEMBER:season = 3;break;case Calendar.OCTOBER:case Calendar.NOVEMBER:case Calendar.DECEMBER:season = 4;break;default:break;}return season;}public static int getWeekOfYear(Date date) {Calendar calendar = Calendar.getInstance();calendar.setFirstDayOfWeek(Calendar.MONDAY);calendar.setTime(date);return calendar.get(Calendar.WEEK_OF_YEAR);}public static int getMonthOfYear(Date date) {Calendar calendar = Calendar.getInstance();calendar.setFirstDayOfWeek(Calendar.MONDAY);calendar.setTime(date);return calendar.get(Calendar.WEEK_OF_MONTH);}/** * 字符串转date * * @param dateString * @return */public static Date StringToDate(String dateString) {SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");Date date = null;try {date = sdf.parse(dateString);} catch (ParseException e) {logger.error(e);}return date;}/** * 判断输入日期是一个星期中的第几天(星期天为一个星期第一天) * * @param date * @return */public static int getWeekIndex(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);return calendar.get(Calendar.DAY_OF_WEEK);}/** * 当前时间的前几天，并且以例如2013/12/09 00:00:00 形式输出 */public static Date subDays(int days) {Date date = addDay(new Date(), -days);String dateStr = getReqDate(date);Date date1 = null;SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");try {date1 = sdf.parse(dateStr);} catch (ParseException e) {logger.error(e);}return date1;}/** * 判断开始时间和结束时间，是否超出了当前时间的一定的间隔数限制 如：开始时间和结束时间，不能超出距离当前时间90天 * * @param startDate *            开始时间 * @param endDate *            结束时间按 * @param interval *            间隔数 * @param dateUnit *            单位(如：月，日),参照Calendar的时间单位 * @return */public static boolean isOverIntervalLimit(Date startDate, Date endDate, int interval, int dateUnit) {Calendar cal = Calendar.getInstance();cal.setTime(new Date());cal.add(dateUnit, interval * (-1));Date curDate = getDayStart(cal.getTime());if (getDayStart(startDate).compareTo(curDate) < 0 || getDayStart(endDate).compareTo(curDate) < 0) {return true;}return false;}/** * 判断开始时间和结束时间，是否超出了当前时间的一定的间隔数限制, 时间单位默认为天数 如：开始时间和结束时间，不能超出距离当前时间90天 * * @param startDate *            开始时间 * @param endDate *            结束时间按 * @param interval *            间隔数 * @return */public static boolean isOverIntervalLimit(Date startDate, Date endDate, int interval) {Calendar cal = Calendar.getInstance();cal.setTime(new Date());cal.add(Calendar.DAY_OF_MONTH, interval * (-1));Date curDate = getDayStart(cal.getTime());if (getDayStart(startDate).compareTo(curDate) < 0 || getDayStart(endDate).compareTo(curDate) < 0) {return true;}return false;}/** * 判断开始时间和结束时间，是否超出了当前时间的一定的间隔数限制, 时间单位默认为天数 如：开始时间和结束时间，不能超出距离当前时间90天 * * @param startDate *            开始时间 * @param endDate *            结束时间按 * @param interval *            间隔数 * @return */public static boolean isOverIntervalLimit(String startDateStr, String endDateStr, int interval) {Date startDate = null;Date endDate = null;try {startDate = DateUtils.parseDate(startDateStr, DateUtils.DATE_FORMAT_DATEONLY);endDate = DateUtils.parseDate(endDateStr, DateUtils.DATE_FORMAT_DATEONLY);} catch (ParseException e) {logger.error(e);return false;}return isOverIntervalLimit(startDate, endDate, interval);}/** * 传入时间字符串及时间格式，返回对应的Date对象 * * @param src *            时间字符串 * @param pattern *            时间格式 * @return Date */public static java.util.Date getDateFromString(String src, String pattern) {SimpleDateFormat f = new SimpleDateFormat(pattern);try {return f.parse(src);} catch (ParseException e) {return null;}}/** * 取季度 * * @param date * @return */@SuppressWarnings("deprecation")public static int getQuarter(Date date) {if (date.getMonth() == 0 || date.getMonth() == 1 || date.getMonth() == 2) {return 1;} else if (date.getMonth() == 3 || date.getMonth() == 4 || date.getMonth() == 5) {return 2;} else if (date.getMonth() == 6 || date.getMonth() == 7 || date.getMonth() == 8) {return 3;} else if (date.getMonth() == 9 || date.getMonth() == 10 || date.getMonth() == 11) {return 4;} else {return 0;}}/** * 取得通用日期时间格式字符串 * * @param Date * @return String */public static String formatDate(Date date) {if (date == null) {return "";}SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");return dateFormat.format(date);}/** * 获取当日的日期格式串 * * @param * @return String */public static String today() {return formatDate(new Date(), "yyyy-MM-dd");}/** * 获取当前时间格式串 * * @param * @return String */public static String currentTime() {return formatDate(new Date(), "yyyyMMddhhmmssSSS");}/** * 取得指定日期格式的字符串 * * @param Date * @return String */public static String formatDate(Date date, String format) {SimpleDateFormat dateFormat = new SimpleDateFormat(format);return dateFormat.format(date);}/** * 获取昨日的日期格式串 * * @return Date */public static String getYesterday() {Calendar calendar = Calendar.getInstance();calendar.add(Calendar.DATE, -1);return formatDate(calendar.getTime(), "yyyy-MM-dd");}/** * 判断当前时间是否在一定的时间范围内 * * @param String * @return boolean */public static boolean isInBetweenTimes(String startTime, String endTime) {Date nowTime = new Date();SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");String time = sdf.format(nowTime);if (time.compareTo(startTime) >= 0 && time.compareTo(endTime) <= 0) {return true;} else {return false;}}/** * 字符转日期 * * @param dateStr * @return */public static Date getDateByStr(String dateStr) {SimpleDateFormat formatter = null;if (dateStr == null) {return null;} else if (dateStr.length() == 10) {formatter = new SimpleDateFormat("yyyy-MM-dd");} else if (dateStr.length() == 16) {formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm");} else if (dateStr.length() == 19) {formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");} else if (dateStr.length() > 19) {dateStr = dateStr.substring(0, 19);formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");} else {return null;}try {return formatter.parse(dateStr);} catch (ParseException e) {logger.error(e);return null;}}/** * 根据传入的数字，输出相比现在days天的数据 * * @param days * @return Date */public static Date getDate(int days) {Calendar calendar = Calendar.getInstance();calendar.add(Calendar.DATE, days);return calendar.getTime();}/** * 日期最大时间 * * @param dt * @return */public static Date getMaxTime(Date dt) {Date dt1 = null;Calendar ca = Calendar.getInstance();ca.setTime(dt);ca.add(Calendar.DAY_OF_MONTH, 1);dt1 = ca.getTime();dt1 = DateUtils.getMinTime(dt1);ca.setTime(dt1);ca.add(Calendar.SECOND, -1);dt1 = ca.getTime();return dt1;}/** * 日期最小时间 * * @param dt * @return */public static Date getMinTime(Date dt) {Date dt1 = null;dt1 = DateUtils.getDateByStr(DateUtils.formatDate(dt, "yyyy-MM-dd"));return dt1;}/** * 月的最后一天 * * @param sDate1 * @return */@SuppressWarnings("deprecation")public static Date getLastDayOfMonth(Date date) {Calendar cDay1 = Calendar.getInstance();cDay1.setTime(date);int lastDay = cDay1.getActualMaximum(Calendar.DAY_OF_MONTH);Date lastDate = cDay1.getTime();lastDate.setDate(lastDay);return lastDate;}/** * 月的第一天 * * @param date * @return */public static Date getFirstDayOfMonth(Date date) {Calendar calendar = Calendar.getInstance();calendar.setTime(date);calendar.set(Calendar.DATE, calendar.getActualMinimum(Calendar.DATE));return calendar.getTime();}/** * 上月第一天 * * @return */public static Date getPreviousMonthFirstDay() {Calendar lastDate = Calendar.getInstance();lastDate.set(Calendar.DATE, 1);// 设为当前月的1号lastDate.add(Calendar.MONTH, -1);// 减一个月，变为下月的1号return getMinTime(lastDate.getTime());}/** * 上月最后一天 * * @return */public static Date getPreviousMonthLastDay() {Calendar lastDate = Calendar.getInstance();lastDate.set(Calendar.DATE, 1);// 设为当前月的1号lastDate.add(Calendar.DATE, -1);return getMinTime(lastDate.getTime());}/** * 两个日期相关天数 * * @param startDate * @param endDate * @return */public static long getDateDiff(String startDate, String endDate) {long diff = 0;try {Date date1 = new SimpleDateFormat("yyyy-MM-dd").parse(startDate);Date date2 = new SimpleDateFormat("yyyy-MM-dd").parse(endDate);diff = (date1.getTime() - date2.getTime()) / (24 * 60 * 60 * 1000) > 0? (date1.getTime() - date2.getTime()) / (24 * 60 * 60 * 1000): (date2.getTime() - date1.getTime()) / (24 * 60 * 60 * 1000);} catch (ParseException e) {}return diff;}public static boolean isEmpty(Object obj){return null==obj;}public static long getDateDiff(Date date1, Date date2) {if (DateUtils.isEmpty(date1) || DateUtils.isEmpty(date1)) {return 0L;}long diff = (date1.getTime() - date2.getTime()) / (24 * 60 * 60 * 1000) > 0? (date1.getTime() - date2.getTime()) / (24 * 60 * 60 * 1000): (date2.getTime() - date1.getTime()) / (24 * 60 * 60 * 1000);return diff;}/* * 判断两个时间是不是在一个周中 */public static boolean isSameWeekWithToday(Date date) {if (date == null) {return false;}// 0.先把Date类型的对象转换Calendar类型的对象Calendar todayCal = Calendar.getInstance();Calendar dateCal = Calendar.getInstance();todayCal.setTime(new Date());dateCal.setTime(date);int subYear = todayCal.get(Calendar.YEAR) - dateCal.get(Calendar.YEAR);// subYear==0,说明是同一年if (subYear == 0) {if (todayCal.get(Calendar.WEEK_OF_YEAR) == dateCal.get(Calendar.WEEK_OF_YEAR))return true;} else if (subYear == 1 && dateCal.get(Calendar.MONTH) == 11 && todayCal.get(Calendar.MONTH) == 0) {if (todayCal.get(Calendar.WEEK_OF_YEAR) == dateCal.get(Calendar.WEEK_OF_YEAR))return true;} else if (subYear == -1 && todayCal.get(Calendar.MONTH) == 11 && dateCal.get(Calendar.MONTH) == 0) {if (todayCal.get(Calendar.WEEK_OF_YEAR) == dateCal.get(Calendar.WEEK_OF_YEAR))return true;}return false;}/** * getStrFormTime: * * @param form *            格式时间 * @param date *            时间 * @return */public static String getStrFormTime(String form, Date date) {SimpleDateFormat sdf = new SimpleDateFormat(form);return sdf.format(date);}/** * 获取几天内日期 return 2014-5-4、2014-5-3 */public static List<String> getLastDays(int countDay) {List<String> listDate = new ArrayList<String>();for (int i = 0; i < countDay; i++) {listDate.add(DateUtils.getReqDateyyyyMMdd(DateUtils.getDate(-i)));}return listDate;}/** * 对时间进行格式化 * * @param date * @return */public static Date dateFormat(Date date) {SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");Date value = new Date();try {value = sdf.parse(sdf.format(date));} catch (ParseException e) {e.printStackTrace();}return value;}/**     * 获取两个日期之间的所有日期（yyyy-MM-dd）     * @Description TODO     * @param begin     * @param end     * @return     * @author XuJD     * @date 2017-4-1     */public static List<Date> getBetweenDates(Date begin, Date end) {List<Date> result = new ArrayList<Date>();Calendar tempStart = Calendar.getInstance();tempStart.setTime(begin);/*Calendar tempEnd = Calendar.getInstance();tempStart.add(Calendar.DAY_OF_YEAR, 1);tempEnd.setTime(end);while (tempStart.before(tempEnd)) {result.add(tempStart.getTime());tempStart.add(Calendar.DAY_OF_YEAR, 1);}*/while (begin.getTime() <= end.getTime()) {result.add(tempStart.getTime());tempStart.add(Calendar.DAY_OF_YEAR, 1);begin = tempStart.getTime();}return result;}public static void main(String[] args) {//Date date3 = DateUtils.addMinutes(new Date(), 5);System.out.println(new Date().after(DateUtils.addMinute(new Date(), -10)));Date date1 = DateUtils.addMinutes(new Date(), -1);Date date2 = DateUtils.addMinutes(date1, 5);System.out.println(date1);System.out.println(date2);System.out.println(DateUtils.isBetween(new Date(), date1, date2, DateUtils.COMP_MODEL_TIME));Integer a = 1;int b = 1;System.out.println(a == b);}}

修改schema.xml子表配置

我们简单创建一个表t_sutable,里面只有两个字段：id（主键自增）和name。

 <!-- 注意这里只支持一个dataNode值配置 注释错误写法--><!-- <table name="t_subtable" primaryKey="id" autoIncrement="true" subTables="t_subtable_$(20170730,20170805)"  dataNode="dn1,dn2"  /> -->
<table name="t_subtable" primaryKey="id" autoIncrement="true" subTables="t_subtable_$(20170730,20170805)"  dataNode="dn1"  />

注：mycat1.6目前不支持既分库又分表。

按日分表实现效果测试

下面是通过Mycat查询的结果：

我们来看子表：

为了让你对既分库又分表有深刻的认识，我们配置dataNode="dn1,dn2":

 <!-- 注意这里只支持一个dataNode值配置 注释错误写法--><!-- <table name="t_subtable" primaryKey="id" autoIncrement="true" subTables="t_subtable_$(20170730,20170806)"  dataNode="dn1,dn2"  /> -->
<table name="t_subtable" primaryKey="id" autoIncrement="true" subTables="t_subtable_$(20170730,20170806)"  dataNode="dn1"  />

得到如下图结果：

由此可见，mycat只支持单库分表。

结合MongoDB测试

修改schema.xml配置

<?xml version="1.0"?><!DOCTYPE mycat:schema SYSTEM "schema.dtd"><mycat:schema xmlns:mycat="http://io.mycat/">        <schema name="TESTDB" checkSQLschema="false" sqlMaxLimit="100">             <table name="people" primaryKey="_ID"  dataNode="dn1" />             <table name="t_subtable" primaryKey="_ID" subTables="t_subtable_$(20170730,20170805)" dataNode="dn1" />        </schema>        <dataNode name="dn1" dataHost="localhost1" database="mongo-test-db" />         <dataHost name="localhost1" maxCon="1000" minCon="1" balance="0" writeType="0" dbType="mongodb" dbDriver="jdbc"><heartbeat>select user()</heartbeat><writeHost host="hostM" url="mongodb://192.168.1.4/" user="admin" password="123456" ></writeHost></dataHost></mycat:schema>

创建主表及子表并添加测试数据：

/** * 创建集合 */@Testpublic void createCollection() throws Exception {// 连接到 mongodb 服务@SuppressWarnings("resource")MongoClient mongoClient = new MongoClient("127.0.0.1", 27017);// 连接到数据库MongoDatabase mongoDatabase = mongoClient.getDatabase("mongo-test-db");System.out.println("Connect to database successfully");//mongoDatabase.createCollection("people");//mongoDatabase.createCollection("t_subtable");int [] arrays=new int []{20170730,20170731,20170801,20170802,20170803,20170804,20170805};for (int i = 0,j=arrays.length; i < j; i++) {mongoDatabase.createCollection("t_subtable_"+arrays[i]);}System.out.println("集合创建成功");}

/** * 插入文档 */@Testpublic void addDocument() throws Exception {// 连接到 mongodb 服务@SuppressWarnings("resource")MongoClient mongoClient = new MongoClient("127.0.0.1", 27017);// 连接到数据库MongoDatabase mongoDatabase = mongoClient.getDatabase("mongo-test-db");System.out.println("Connect to database successfully");MongoCollection<Document> collection = mongoDatabase.getCollection("test");System.out.println("集合 test 选择成功");// 插入文档/** * 1. 创建文档 org.bson.Document 参数为key-value的格式 2. 创建文档集合List<Document> 3. * 将文档集合插入数据库集合中 mongoCollection.insertMany(List<Document>) 插入单个文档可以用 * mongoCollection.insertOne(Document) **/Document document = new Document("title", "mongo").append("description", "database").append("likes", 100).append("by", "Fly");List<Document> documents = new ArrayList<Document>();documents.add(document);System.out.println("文档插入成功");collection.insertMany(documents);int [] arrays=new int []{20170730,20170731,20170801,20170802,20170803,20170804,20170805};for (int i = 0,j=arrays.length; i < j; i++) {String table="t_subtable_"+arrays[i];Document document2 = new Document("title", "mongo").append("name", "boonya").append("table", table).append("description", "database").append("likes", 100).append("by", "Fly");MongoCollection<Document> collection2 = mongoDatabase.getCollection(table);collection2.insertOne(document2); }}

Mycat SQL语句查询结果：

通过mycat用代码来测试：

唯一不足的是Mycat对客户端的支持不是很好，双击的时候不能正常显示主表的数据：

参考资料

MyCAT源码分析：调试环境搭建

源代码方式调试Mycat

Mycat源码篇 : 起步，Mycat源码阅读调试环境搭建