SpringMVC+redis整合-上篇

 SpringMVC+redis整合-上篇

http://blog.csdn.net/LINABC123000/article/details/68922941

之前一直有听说过redis，一直想整合SpringMVC+redis，但是无奈一直没有时间。这次趁着到新公司上班，暂时没有什么任务的间隔，搭建了SpringMVC+redis。由于多redis的理解比较粗浅，如有说的不对的地方，欢迎指正，共同进步！同时后续的文章都是基于该环境进行更高层析的修改的。

本文基于eclipse+springmvc+redis开发。

一、搭建SpringMVC环境

之前已经写过了一篇Spring+SpringMVC+hibernate的文章，在这里有就不做过多的解释，直接开始撸代码。

1. 引入jar包

（1）引入springMVC相关的jar包

使用的spring版本：spring-framework-4.0.0.RELEASE，在WEB-INF/lib添加如下jar包：

spring-beans-4.0.0.RELEASE.jar
spring-context-4.0.0.RELEASE.jar
spring-core-4.0.0.RELEASE.jar
spring-expression-4.0.0.RELEASE.jar
spring-orm-4.0.0.RELEASE.jar
spring-tx-4.0.0.RELEASE.jar
spring-web-4.0.0.RELEASE.jar
spring-webmvc-4.0.0.RELEASE.jar

（2）加上第三方核心包

commons-logging-1.2.jar

2. 配置web.xml

主要是配置Spring容器、springMVC容器以及编码过滤器

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">

    <!-- 配置spring容器 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value><!-- 类路径下的applicationContext.xml文件 -->
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- 配置springmvc容器 -->
    <servlet>
        <servlet-name>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value><!-- 类路径下的springmvc.xml文件 -->
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>/*</url-pattern><!-- 拦截所有请求 -->
    </servlet-mapping>

    <!-- 编码过滤器 -->
    <filter>
        <filter-name>charsetEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>charsetEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

（2）配置springmvc.xml

在与src同级目录下建立"source Folder"（eclipse下），命名为config

主要是配置扫描的包、视图解析器、静态资源文件以及开启注解模式

<?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:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        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-4.0.xsd">

    <!-- 配置自动扫描的包  -->
    <context:component-scan base-package="com.yusys">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
    </context:component-scan>

    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property><!-- 视图路径 -->
        <property name="suffix" value=".jsp"></property><!-- 视图后缀名 -->
    </bean>

    <!-- 配置静态资源文件 -->
    <mvc:default-servlet-handler/>

    <!-- 开启注解模式 -->
    <mvc:annotation-driven/>

</beans>

（3）配置applicationContext.xml

在config文件夹下建立applicationContext.xml文件

<?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:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

    <!-- 配置扫描的包 -->
    <context:component-scan base-package="com.yusys">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
    </context:component-scan>

</beans>

（4）配置完后初步结果

（5）测试ApplicationContext

package com.yusys.junit;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SpringRedisTest {

    private static ApplicationContext applicationContext;

    static{
        applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
    }

    @Test
    public void testApplicationContext(){
        System.out.println(applicationContext);
    }

}

报错：

通过错误可以知道缺少aop包：添加spring-aop-4.0.0.RELEASE.jar 到lib文件夹下，并且Build Path --> Add to Build Path

二、整合redis

需要jar包：

jedis-2.1.0.jar
commons-pool-1.5.4.jar
spring-data-redis-1.0.2.RELEASE.jar

在这里推荐一个下载jar的地方：http://search.maven.org/

（1）在config下创建redis.properties，主要是redis的一些设置

# Redis Setting
# Redis默认有16个库，序号是0-15，默认是选中的是0号数据库
spring.redis.database=0
# Redis服务器地址
spring.redis.host=127.0.0.1
# Redis服务器连接端口，默认是6379
spring.redis.port=6379
# Redis服务器连接密码（默认为空）
spring.redis.password=
# 连接池最大连接数（使用负值表示没有限制），根据实际情况修改
spring.redis.pool.maxActive=8
# 连接池最大阻塞等待时间（使用负值表示没有限制），根据实际情况修改
spring.redis.pool.maxWait=-1
# 连接池中的最大空闲连接，根据实际情况修改
spring.redis.pool.maxIdle=8
# 连接池中的最小空闲连接，根据实际情况修改
spring.redis.pool.minIdle=0
# 连接超时时间（毫秒），根据实际情况修改
spring.redis.timeout=2000

（2）在config下创建spring-data-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:cache="http://www.springframework.org/schema/cache"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:redis="http://www.springframework.org/schema/redis" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.0.xsd
        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-4.0.xsd
        http://www.springframework.org/schema/redis http://www.springframework.org/schema/redis/spring-redis-1.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

    <!-- 载入redis.properties,这里要特别注意，如果有多个properties文件，必须用逗号分开，不能写成两个 <context:property-placeholder/> -->
    <context:property-placeholder location="classpath:redis.properties" />

    <!-- 配置JedisPoolConfig相关参数 -->
    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxActive" value="${spring.redis.pool.maxActive}"></property>
        <property name="maxIdle" value="${spring.redis.pool.maxIdle}"></property>
        <property name="minIdle" value="${spring.redis.pool.minIdle}"></property>
        <property name="maxWait" value="${spring.redis.pool.maxWait}"></property>
        <property name="testOnBorrow" value="${spring.redis.pool.testOnBorrow}"></property>
        <property name="testOnReturn" value="${spring.redis.pool.testOnReturn}"></property>
    </bean>

    <!-- 配置redis服务器信息 -->
    <bean id="connectionFactory"
        class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <property name="poolConfig" ref="poolConfig"></property>
        <property name="hostName" value="${spring.redis.host}"></property>
        <property name="port" value="${spring.redis.port}"></property>
        <property name="password" value="${spring.redis.password}"></property>
        <property name="database" value="${spring.redis.database}"></property>
        <property name="timeout" value="${spring.redis.timeout}"></property>
    </bean>

    <!-- 配置RedisTemplate -->
    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
        <property name="connectionFactory" ref="connectionFactory"></property>
        <property name="keySerializer">
            <bean
                class="org.springframework.data.redis.serializer.StringRedisSerializer"></bean>
        </property>
        <property name="valueSerializer">
            <bean
                class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"></bean>
        </property>

        <property name="hashKeySerializer">
            <bean
                class="org.springframework.data.redis.serializer.StringRedisSerializer"></bean>
        </property>
        <!-- 使用JacksonJsonRedisSerializer需要引入jar包：barchart-wrap-jackson-1.8.6-build001.jar -->
        <!-- JacksonJsonRedisSerializer 需要一个有参的构造函数，因此需要配置constructor-arg -->
        <property name="hashValueSerializer">
            <bean
                class="org.springframework.data.redis.serializer.JacksonJsonRedisSerializer">
                <constructor-arg type="java.lang.Class" value="java.lang.Object"></constructor-arg>
            </bean>
        </property>
    </bean>

    <!-- 配置redis连接池 -->
    <bean class="redis.clients.jedis.JedisPool">
        <constructor-arg ref="poolConfig" />
        <constructor-arg value="${spring.redis.host}" />
        <constructor-arg type="int" value="${spring.redis.port}" />
        <constructor-arg type="int" value="${spring.redis.timeout}" />
        <constructor-arg type="java.lang.String" value="${spring.redis.password}" />
        <constructor-arg type="int" value="${spring.redis.database}" />
    </bean>
</beans>

（3）在applicationContext.xml中引入spring-data-redis.xml文件：

<?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:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

    <!-- 配置扫描的包 -->
    <context:component-scan base-package="com.yusys">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
    </context:component-scan>

    <!-- 引入spring-data-redis.xml -->
    <import resource="spring-data-redis.xml"/>
</beans>

（4）测试是否连接成功

package com.yusys.junit;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.data.redis.core.RedisTemplate;

public class SpringRedisTest {

    private static ApplicationContext applicationContext;

    static{
        applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
    }

    @Test
    public void testRedisConnection(){
        RedisTemplate redisTemplate = (RedisTemplate)applicationContext.getBean("redisTemplate");
        redisTemplate.renameIfAbsent("abc", "bbb");//如果key=abc存在，则将key修改为bbb
        System.out.println(redisTemplate);
    }

}

（5）如何查看是否成功

这里介绍一个比较low的可视化软件：Redis Desktop Manager

通过修改可以看到key已经从abc变为bbb了，测试成功！