SSM整合redis

一、关于SSM整合Redis需要知道的一些小知识

在学习Redis的时候，大家应该知道，JAVA操作redis通常使用的是Jedis，通过java代码来操作redis的数据存储读取等操作，用过的人应该知道，Jedis客户端已经足够简单和轻量级了，但是呢，在此同时，Spring也为Redis提供了支持，就是在Spring-data模块中的Spring-Data-Redis（SDR），它一部分是基于Jedis客户端的API封装，另一部分是对Spring容器的整合。

大家应该都知道，Spring容器可以作为一个大工厂，为各种对象创建实例，关于SSM与Redis的整合，准确点，其实也就是Spring与Redis的整合。

又说会来了，Spring要和Redis整合需要用到的，就是Spring-Data模块中的Spring-data-Redis。

二、SDR资料(Spring-Data-Redis)

资料：http://projects.spring.io/spring-data-redis/
文档：https://docs.spring.io/spring-data/redis/docs/1.8.6.RELEASE/reference/html/
个人觉得没有什么比官方文档说的更为详细的了
这里对其功能做一个简单的说明：
1、连接池自动管理，并且提供了RedisTemplate类（很重要）
2、将jedis的API按照类型操作，进行封装

其中Key Bound Operations ,是对key绑定便携化的接口，什么意思呢，就是，原先我们在存放数据的时候，需要指定一个key，然后根据这个key修改，删除啊之类操作，但是无论是修改还是删除都要重新填写使用这个key，而这个的接口呢，其实也是需要的，只是前期你指定了一个key，在后续的操作中就无需显式的频繁的使用key来尽享操作。

做一个简单的关于String的演示，代码如下：

String boundKey = "key1";BoundValueOperations<Stirng,String> ops = stringRedisTemplate.boundValueOps(boundKey);//绑定keyops.set("hellos");//添加数据，相当于redis命令:set key1 hellos,只是在这里不需要显式使用key了System.out.println(ops.get());获取并且输出数据

3、对事务进行封装最后将由Spring容器进行控制
4、提供了多种序列化和反序列化的策略
（1）StringRedisSerializer：应用与字符串场景，可以是key可以是value
（2）JdkSerializationRedisSerializer：使用JDK本身序列化方式，序列化POJO对象，通常是存储value为对象的时候
（3）JacksonJsonRedisSerializer：这一种方式理解起来很容易，将POJO对象和JSON对象进行互相转换，然后存储这个JSON字符串
（4）OxmSerializer：和上面个有些类似，但是适合XML进行转换，不推荐使用

三、SSM整合Redis

1、导入jar包，或者使用maven，方式自己选，我这提供jar包：
http://pan.baidu.com/s/1miBlAMc

2、web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"         version="3.1">    <!--spring 监听器-->    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <!-- 防止Spring内存溢出监听器 -->    <listener>        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>    </listener>    <!--mybatis和redis配置-->    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:spring-redis.xml,classpath:spring-mybaties.xml</param-value>    </context-param>    <!--log4j日志-->    <context-param>        <param-name>log4jConfigLocation</param-name>        <param-value>classpath:log4j.properties</param-value>    </context-param>    <listener>        <listener-class>            org.springframework.web.util.Log4jConfigListener        </listener-class>    </listener>    <!-- 编码过滤器 -->    <filter>        <filter-name>encodingFilter</filter-name>        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>        <async-supported>true</async-supported>        <init-param>            <param-name>encoding</param-name>            <param-value>UTF-8</param-value>        </init-param>    </filter>    <filter-mapping>        <filter-name>encodingFilter</filter-name>        <url-pattern>*.do</url-pattern>    </filter-mapping>    <!--spring mvc-->    <servlet>        <servlet-name>SpringMVC</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <param-name>contextConfigLocation</param-name>            <param-value>classpath:spring-mvc.xml</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>SpringMVC</servlet-name>        <url-pattern>*.do</url-pattern>    </servlet-mapping></web-app>

3、spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:mvc="http://www.springframework.org/schema/mvc"       xmlns:context="http://www.springframework.org/schema/context"       xsi:schemaLocation="        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd        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">    <context:component-scan base-package="com"></context:component-scan>    <mvc:annotation-driven></mvc:annotation-driven>    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">        <property name="messageConverters">            <list>                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">                    <property name="supportedMediaTypes">                        <list>                            <value>text/html;charset=UTF-8</value>                            <value>application/json;charset=UTF-8</value>                        </list>                    </property>                </bean>            </list>        </property>    </bean>    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/WEB-INF/"></property>        <property name="suffix" value=".jsp"></property>        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>    </bean>    <!-- 文件上传 -->    <bean id="multipartResolver"  class="org.springframework.web.multipart.commons.CommonsMultipartResolver">        <property name="maxUploadSize" value="102400000"></property>    </bean></beans>

4、spring-mybaties.xml

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xmlns:context="http://www.springframework.org/schema/context"       xmlns:p="http://www.springframework.org/schema/p"       xmlns:c="http://www.springframework.org/schema/c"       xmlns:util="http://www.springframework.org/schema/util"       xmlns:tx="http://www.springframework.org/schema/tx"       xmlns:aop="http://www.springframework.org/schema/aop"       xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context.xsd        http://www.springframework.org/schema/util        http://www.springframework.org/schema/util/springutil.xsd        http://www.springframework.org/schema/tx        http://www.springframework.org/schema/tx/spring-tx.xsd        http://www.springframework.org/schema/aop        http://www.springframework.org/schema/aop/spring-aop.xsd">    <!-- 设置自动扫描包 -->    <context:component-scan base-package="com"></context:component-scan>    <!-- 后处理器,只能写一个，所以写在redis配置文件中 -->    <!--<bean id="mapping" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">        <property name="location" value="classpath:*.properties" />    </bean>-->    <!--连接池-->    <bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource" destroy-method="close">        <constructor-arg>            <bean class="com.zaxxer.hikari.HikariConfig">                <property name="driverClassName" value="${driverClassName}" />                <property name="jdbcUrl" value="${jdbcUrl}" />                <property name="username" value="${username}" />                <property name="password" value="${password}" />                <property name="connectionTimeout" value="${connectionTimeout}"/>                <property name="idleTimeout" value="${idleTimeout}"/>                <property name="maxLifetime" value="${maxLifetime}"/>                <property name="maximumPoolSize" value="${maximumPoolSize}"/>                <property name="minimumIdle" value="${minimumIdle}"/>            </bean>        </constructor-arg>    </bean>    <!-- 依赖于mybatis-spring.jar包 -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="configLocation" value="classpath:mybatis-config.xml"></property>        <property name="dataSource" ref="dataSource" />        <!-- 自动扫描mapping.xml文件,这一句很重要 -->        <property name="mapperLocations" value="classpath:com/zxm/mapping/xml/*.xml"></property>    </bean>    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="dataSource" />    </bean>    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <property name="basePackage" value="com.zxm.mapping.dao"></property>        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>    </bean>    <!-- 定义事务 -->    <tx:annotation-driven transaction-manager="transactionManager"/>    <tx:advice id="txAdvice" transaction-manager="transactionManager">        <tx:attributes>            <tx:method name="get*" read-only="true"/>        </tx:attributes>    </tx:advice>    <!-- AOP定义切面添加事务管理 -->    <aop:config>        <!-- 定义切面 -->        <aop:pointcut expression="execution(public * com.zxm.*.*(..))" id="myPointcut"/>        <aop:advisor advice-ref="txAdvice" pointcut-ref="myPointcut"/>    </aop:config></beans>

mybatis如果还需要使用Alias的话还需要一个配置文件

mybatis-config.xml：

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"  "http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration>      <typeAliases>        <!-- <typeAlias type="com.zxm.mybatis.bean.User" alias="User"/> -->        <package name="com.zxm"/>    </typeAliases></configuration>

5、spring-redis.xml

<?xml version="1.0" encoding="UTF-8"?><beans    xmlns="http://www.springframework.org/schema/beans"          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xmlns:p="http://www.springframework.org/schema/p"          xmlns:tx="http://www.springframework.org/schema/tx"          xmlns:context="http://www.springframework.org/schema/context"          xsi:schemaLocation="      http://www.springframework.org/schema/beans      http://www.springframework.org/schema/beans/spring-beans-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/context      http://www.springframework.org/schema/context/spring-context-3.0.xsd">    <context:property-placeholder location="classpath:*.properties"/>    <!--设置数据池-->    <bean id="poolConfig"  class="redis.clients.jedis.JedisPoolConfig">        <property name="maxIdle" value="${redis.maxIdle}"></property>        <property name="minIdle" value="${redis.minIdle}"></property>        <property name="maxTotal" value="${redis.maxTotal}"></property>        <property name="maxWaitMillis" value="${redis.maxWaitMillis}"></property>        <property name="testOnBorrow" value="${redis.testOnBorrow}"></property>    </bean>    <!--链接redis-->    <bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">        <property name="hostName" value="${redis.host}"></property>        <property name="port" value="${redis.port}"></property>        <property name="password" value="${redis.password}"></property>        <property name="poolConfig" ref="poolConfig"></property>    </bean>    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate" p:connection-factory-ref="connectionFactory" >        <!--以下针对各种数据进行序列化方式的选择-->        <property name="keySerializer">            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />        </property>        <property name="valueSerializer">            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />        </property>        <property name="hashKeySerializer">            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />        </property>        <!--<property name="hashValueSerializer">            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />        </property>-->    </bean></beans>

5、JDBC所需properties文件:
jdbc.properties

driverClassName=com.mysql.jdbc.Driverusername=rootpassword=rootjdbcUrl=jdbc\:mysql\://localhost\:3306/redisconnectionTimeout=30000idleTimeout=600000maxLifetime=1800000maximumPoolSize=400minimumIdle=100

6、Redis所需properties文件:
redis.properties

redis.maxIdle=300redis.minIdle=100redis.maxWaitMillis=3000redis.testOnBorrow=trueredis.maxTotal=500redis.host=127.0.0.1redis.port=6379redis.password=zxm

7、日志配置文件
log.properties

# Configure logging for testing: optionally with log filelog4j.rootLogger=WARN, stdout# log4j.rootLogger=WARN, stdout, logfilelog4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%nlog4j.appender.logfile=org.apache.log4j.FileAppenderlog4j.appender.logfile.File=target/spring.loglog4j.appender.logfile.layout=org.apache.log4j.PatternLayoutlog4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

四、合作

1、设置一个Reids的基本操作接口

RedisBaiseTakes.java

package com.zxm.util.redistakes;import java.util.List;/** * Created by zxm on 2017/8/11. */public interface RedisBaiseTakes<H,K,V> {    //增    public void add(K key,String value);    public void addObj(H objectKey,K key,V object);    //删    public void delete(K key);    public void delete(List<K> listKeys);    public void deletObj(H objecyKey,K key);    //改    public void update(K key,String value);    public void updateObj(H objectKey,K key,V object);    //查    public String get(K key);    public V getObj(H objectKey,K key);}

设定一个访问客户的redis操作类：

SeeUserRedisTakes.java

package com.zxm.util.redistakes;import com.zxm.bean.SeeUser;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.stereotype.Component;import javax.annotation.Resource;import java.util.List;import java.util.logging.Logger;/** * Created by zxm on 2017/8/12. * */@Component("seeUserRedisTakes")public class SeeUserRedisTakes implements RedisBaiseTakes<String,String,SeeUser>{    @Resource(name="redisTemplate")    private RedisTemplate redisTemplate;    private Logger logger = Logger.getLogger(String.valueOf(SeeUserRedisTakes.class));    @Override    public void add(String key, String value) {        if(redisTemplate==null){            logger.warning("redisTemplate 实例化失败");            return;        }else{           redisTemplate.opsForValue().set(key,value);        }    }    @Override    public void addObj(String objectKey, String key, SeeUser object) {        if(redisTemplate==null){            logger.warning("redisTemplate 实例化失败");            return;        }else{            redisTemplate.opsForHash().put(objectKey,key,object);        }    }    @Override    public void delete(String key) {    }    @Override    public void delete(List<String> listKeys) {    }    @Override    public void deletObj(String objecyKey, String key) {    }    @Override    public void update(String key, String value) {    }    @Override    public void updateObj(String objectKey, String key, SeeUser object) {    }    @Override    public String get(String key) {        String value = (String) redisTemplate.opsForValue().get(key);        return value;    }    @Override    public SeeUser getObj(String objectKey, String key) {        SeeUser seeUser = (SeeUser) redisTemplate.opsForHash().get(objectKey,key);        return seeUser;    }}

创建一个用户访问的POJO对象

SeeUser.java

package com.zxm.bean;import java.io.Serializable;/** * Created by zxm on 2017/8/11. */public class SeeUser implements Serializable{    private String id;    private String ip;//用户的id    private String seeTime;//用户访问的时间    private int seeCount;//用户访问的次数    public String getId() {        return id;    }    public void setId(String id) {        this.id = id;    }    public String getIp() {        return ip;    }    public void setIp(String ip) {        this.ip = ip;    }    public String getSeeTime() {        return seeTime;    }    public void setSeeTime(String seeTime) {        this.seeTime = seeTime;    }    public int getSeeCount() {        return seeCount;    }    public void setSeeCount(int seeCount) {        this.seeCount = seeCount;    }}

创建一个Controller对象：

package com.zxm.controller;import com.zxm.bean.SeeUser;import com.zxm.util.redistakes.RedisBaiseTakes;import com.zxm.util.tools.CommTools;import com.zxm.util.tools.GetUserInfo;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;import javax.annotation.Resource;import javax.servlet.http.HttpServletRequest;/** * Created by zxm on 2017/8/7. * */@Controller@RequestMapping("test")public class TestController {    @Resource(name="seeUserRedisTakes")    private RedisBaiseTakes seeUserRedisTakes;    @RequestMapping("/hello.do")    public ModelAndView hello(){        ModelAndView mv = new ModelAndView();        System.out.println("hello see");        seeUserRedisTakes.add("hello1","zxm");        mv.setViewName("hello");        return mv;    }    @RequestMapping("/hello2.do")    public ModelAndView hello2(HttpServletRequest request){        ModelAndView mv = new ModelAndView();        SeeUser seeUser = new SeeUser();        seeUser.setId("1");        seeUser.setIp(GetUserInfo.getIpAddr(request));        seeUser.setSeeTime(CommTools.getNoewTime("yyyy-MM-dd HH:mm:ss"));        seeUser.setSeeCount(1);        seeUserRedisTakes.addObj("seeUser",seeUser.getId(),seeUser);        mv.setViewName("hello");        return mv;    }    @RequestMapping("/hello3.do")    public ModelAndView hello3(HttpServletRequest request){        ModelAndView mv = new ModelAndView();        SeeUser seeUser = (SeeUser) seeUserRedisTakes.getObj("seeUser","1");        if(seeUser!=null){            System.out.println(seeUser.getId()+"======="+seeUser.getIp()+"======"+seeUser.getSeeTime()+"======="+seeUser.getSeeCount());        }        mv.setViewName("hello");        return mv;    }}

访问结果：
(1)访问链接：
http://localhost:8080/test/hello.do
访问结果：

(2)访问链接：
http://localhost:8080/test/hello2.do
访问结果：

(3)访问链接：
http://localhost:8080/test/hello3.do
访问结果：
输出：

上述代码中没有将mybatis用起来，但是redis和SSM的整合就是redis和Spring的整合，这里演示的是SpringMVC 控制器（Controller）对redis的简单操作和使用，当然也可以其它如server层，原理都一样