Dubbo实战之具体应用

背景：
传统的项目是单一的，当业务不断增长，系统的功能不断增加，系统就会边的臃肿庞大难以维护，最常见的就是，修改一个小功能，整个系统得重新部署启动，对于频繁的迭代，令人抓狂。近几年，模块化的思想兴起，将庞大的系统拆分成多个功能模块，这样很大程度上解决的以上的烦恼。旧的的问题解决，但又带来新的问题，模块之间的服务调用通信怎么解决？rpc解决了这个问题，dubbo就是rpc的典型代表。

使用（基于sprng框架系列）：
1.使用主流的开发框架springmvc与dubbo整合，maven管理依赖包。
2.项目结构如图：

使用maven的继承和聚合功能来管理项目的。

3.上篇文章提到，dubbo是分为消费方和生产方的，这里phoenix-organ-web 代表消费方（多个）；phoenix-organ-provider代表生产方；phoenix-organ-api则是一个接口，里面包含生产方需要实现，消费方需要调用的接口和实体类，准确的说 api是需要打包发布私服的，然后消费方和生产方都需要通过坐标引用该jar包的，双方的引用api的目的不同，生产方需要具体实现这些接口的功能，消费方式主要是通过来找到需要调用的方法而已。

4.这三个子项目中除了基本的spring配置文件，还有重要的几个配置文件，这才是关键。
phoenix-organ-api：organ-dubbo-consumer.xml 内容如下：

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:int="http://www.springframework.org/schema/integration"    xmlns:int-redis="http://www.springframework.org/schema/integration/redis"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:p="http://www.springframework.org/schema/p"    xmlns:mvc="http://www.springframework.org/schema/mvc"     xmlns:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:mongo="http://www.springframework.org/schema/data/mongo"    xmlns:stream="http://www.springframework.org/schema/integration/stream"    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"    xsi:schemaLocation="       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd    http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd    http://www.springframework.org/schema/data/mongo    http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd    http://www.springframework.org/schema/integration    http://www.springframework.org/schema/integration/spring-integration-2.1.xsd    http://www.springframework.org/schema/integration/redis    http://www.springframework.org/schema/integration/redis/spring-integration-redis-2.1.xsd    http://www.springframework.org/schema/integration/stream    http://www.springframework.org/schema/integration/stream/spring-integration-stream-2.1.xsd     http://code.alibabatech.com/schema/dubbo    http://code.alibabatech.com/schema/dubbo/dubbo.xsd ">    <dubbo:reference id="oneService" interface="com.test.service.OneService" version="2.0.0"/>    <dubbo:reference id="twoService" interface="com.test.service.TwoService" version="2.0.0"/>    <dubbo:reference id="threeService" interface="com.test.service.ThreeService" version="2.0.0"/></beans>

version：标示服务的唯一性，除此 还有端口号。

phoenix-organ-provider：organ-dubbo-provider.xml 代码如下

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:int="http://www.springframework.org/schema/integration"    xmlns:int-redis="http://www.springframework.org/schema/integration/redis"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:p="http://www.springframework.org/schema/p"    xmlns:mvc="http://www.springframework.org/schema/mvc"     xmlns:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:mongo="http://www.springframework.org/schema/data/mongo"    xmlns:stream="http://www.springframework.org/schema/integration/stream"    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"    xsi:schemaLocation="       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd    http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd    http://www.springframework.org/schema/data/mongo    http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd    http://www.springframework.org/schema/integration    http://www.springframework.org/schema/integration/spring-integration-2.1.xsd    http://www.springframework.org/schema/integration/redis    http://www.springframework.org/schema/integration/redis/spring-integration-redis-2.1.xsd    http://www.springframework.org/schema/integration/stream    http://www.springframework.org/schema/integration/stream/spring-integration-stream-2.1.xsd     http://code.alibabatech.com/schema/dubbo    http://code.alibabatech.com/schema/dubbo/dubbo.xsd ">    <dubbo:service interface="com.test.service.OneService" ref="oneService" version="2.0.0"/>    <dubbo:service ref="twoService" interface="com.test.service.TwoService" version="2.0.0"/>    <dubbo:service ref="threeService" interface="com.test.service.ThreeService" version="2.0.0"/>

organ-dubbo-config.xml ,代码如下：

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:int="http://www.springframework.org/schema/integration"    xmlns:int-redis="http://www.springframework.org/schema/integration/redis"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:p="http://www.springframework.org/schema/p"    xmlns:mvc="http://www.springframework.org/schema/mvc"     xmlns:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:mongo="http://www.springframework.org/schema/data/mongo"    xmlns:stream="http://www.springframework.org/schema/integration/stream"    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"    xsi:schemaLocation="       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd    http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd    http://www.springframework.org/schema/data/mongo    http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd    http://www.springframework.org/schema/integration    http://www.springframework.org/schema/integration/spring-integration-2.1.xsd    http://www.springframework.org/schema/integration/redis    http://www.springframework.org/schema/integration/redis/spring-integration-redis-2.1.xsd    http://www.springframework.org/schema/integration/stream    http://www.springframework.org/schema/integration/stream/spring-integration-stream-2.1.xsd     http://code.alibabatech.com/schema/dubbo    http://code.alibabatech.com/schema/dubbo/dubbo.xsd ">    <dubbo:application name="${dubbo.application.name}" />    <dubbo:protocol name="${dubbo.protocol.name}" port="${dubbo.protocol.port}" />    <dubbo:registry address="${dubbo.registry.address}" protocol="${dubbo.protocol.name}"/>    <dubbo:consumer timeout="10000" check="false" /></beans>

applicationContext.xml 中代码添加如下：

<import resource="classpath:organ-dubbo-config.xml" /><import resource="classpath:organ-dubbo-provider.xml" />

phoenix-organ-web：organ-dubbo-config.xml 代码如下

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:int="http://www.springframework.org/schema/integration"    xmlns:int-redis="http://www.springframework.org/schema/integration/redis"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:p="http://www.springframework.org/schema/p"    xmlns:mvc="http://www.springframework.org/schema/mvc"     xmlns:context="http://www.springframework.org/schema/context"    xmlns:aop="http://www.springframework.org/schema/aop"     xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:mongo="http://www.springframework.org/schema/data/mongo"    xmlns:stream="http://www.springframework.org/schema/integration/stream"    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"    xsi:schemaLocation="       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd    http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd    http://www.springframework.org/schema/data/mongo    http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd    http://www.springframework.org/schema/mvc    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd    http://www.springframework.org/schema/integration    http://www.springframework.org/schema/integration/spring-integration-2.1.xsd    http://www.springframework.org/schema/integration/redis    http://www.springframework.org/schema/integration/redis/spring-integration-redis-2.1.xsd    http://www.springframework.org/schema/integration/stream    http://www.springframework.org/schema/integration/stream/spring-integration-stream-2.1.xsd     http://code.alibabatech.com/schema/dubbo    http://code.alibabatech.com/schema/dubbo/dubbo.xsd ">    <dubbo:application name="${dubbo.application.name}" />    <dubbo:protocol name="${dubbo.protocol.name}" />    <dubbo:registry address="${dubbo.registry.address}" protocol="${dubbo.protocol.name}"/>    <dubbo:consumer timeout="10000" check="false" /></beans>

applicationContext.xml 中代码添加如下：

<import resource="classpath:organ-dubbo-config.xml" /><import resource="classpath:organ-dubbo-consumer.xml" />

5.启动dubbo。启动dubbo的时候，需要在phoenix-organ-provider 中启动，需要做一些启动配置，还有打包插件。
首先在 pom.xml 里添加插件插件配置：

<plugin>                <artifactId>maven-assembly-plugin</artifactId>                <configuration>            <descriptor>src/main/assembly/assembly.xml</descriptor>                </configuration>                <executions>                    <execution>                        <id>make-assembly</id>                        <phase>package</phase>                        <goals>                            <goal>single</goal>                        </goals>                    </execution>                </executions>    </plugin>

assembly.xml 代码如下：

<!-- - Copyright 1999-2011 Alibaba Group. -   - 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.--><assembly>    <id>assembly</id>    <formats>        <format>tar.gz</format>    </formats>    <includeBaseDirectory>true</includeBaseDirectory>    <fileSets>        <fileSet>            <directory>${project.build.directory}/dubbo/META-INF/assembly/bin</directory>            <outputDirectory>bin</outputDirectory>            <fileMode>0755</fileMode>        </fileSet>        <fileSet>            <!-- 把替换好的属性文件输出到打包后的conf下 -->            <directory>${project.build.directory}/classes/conf</directory>            <outputDirectory>conf</outputDirectory>            <fileMode>0644</fileMode>        </fileSet>    </fileSets>    <dependencySets>        <dependencySet>            <outputDirectory>lib</outputDirectory>        </dependencySet>    </dependencySets></assembly>

插件配置好以后 ，再配置dubbo的文件，dubbo.properties 和 log4j.xml
dubbo.properties 代码：

dubbo.spring.config=classpath:applicationContext.xmldubbo.log4j.config=classpath:log4j.xmlorgan.jdbc.driverClassName=com.mysql.jdbc.Driverorgan.jdbc.url=${jdbc.url}organ.jdbc.username=${jdbc.username}organ.jdbc.password=${jdbc.password}cache.expiredTime=86400organ.redis.host=${redis.host}organ.redis.port=${redis.port}organ.mongodb.address=${mongodb.address}organ.mongodb.database=${mongodb.database}organ.dubbo.application.name=${dubbo.application.name}organ.dubbo.registry.address=${dubbo.registry.address}organ.dubbo.protocol.name=${dubbo.protocol.name}organ.dubbo.protocol.port=${dubbo.protocol.port}organ.bigdata.host=${organ.bigdata.host}log4j.path=${log4j.path}log4j.level=${log4j.level}

log4j.xml 代码如下：

<?xml version="1.0"?><!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"><log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">    <!-- 控制台日志 <appender name="consolelog" class="org.apache.log4j.ConsoleAppender">         <param name="encoding" value="UTF-8" /> <layout class="org.apache.log4j.PatternLayout">         <param name="ConversionPattern" value="%d{yyyyMMddHHmmss} %m%n %p %c %t "         /> </layout> <filter class="org.apache.log4j.varia.LevelRangeFilter"> <param         name="LevelMax" value="error"></param> <param name="LevelMin" value="error"></param>         <param name="AcceptOnMatch" value="true" /> </filter> </appender> -->    <!-- 全部日志 -->    <appender name="normal_log_file" class="org.apache.log4j.DailyRollingFileAppender">        <param name="encoding" value="UTF-8" />        <param name="File" value="${log4j.path}/phoenix-organ/normal.log" />        <param name="DatePattern" value=".yyyyMMddHH" />        <layout class="org.apache.log4j.PatternLayout">            <param name="ConversionPattern" value="%p %d{yyyyMMddHHmmss} %c %t %m%n" />        </layout>    </appender>    <logger name="com.ginkgocap.ywxt">        <level value="debug"></level>    </logger>    <root>        <level value="error" />        <appender-ref ref="normal_log_file" />    </root></log4j:configuration>

开始编译：

启动配置，com.alibaba.dubbo.container.Main是dubbuo自带的启动主类,同时引入编译好的conf下的两个文件：

启动成功，控制台会有一行启动成功的打印日志。

启动成功后，到dubbo监控中心（http://监控中心IP:9099/）查看，是否正确启动。

通过插件打包成 tar.gz 包，上传服务器，解压，运行start.sh 启动服务。