springmvc+mybatis+redis实现查询插入操作

最近在学习redis，虽然现在还不是很熟练。不过可以进行简单的框架整合开发。

IDE:我使用的是IDEA。springmvc+spring+mybatis的整合这个我就不多说了，下面我们先进行这块的整合，最后在加入redis。下边这块就直接上代码。

源码：https://gitee.com/smfx1314/springmvcredis.git

首先看一下我的工程结构：

第一步：在pox.xml中引入jar

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.jiangfx</groupId>
  <artifactId>springmvc-redis</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>springmvc-redis Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.4</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.4</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.1.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core -->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-core</artifactId>
      <version>2.9.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.21</version>
      <scope>test</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/aopalliance/aopalliance -->
    <dependency>
      <groupId>aopalliance</groupId>
      <artifactId>aopalliance</artifactId>
      <version>1.0</version>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.38</version>
    </dependency>
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api -->
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>javax.servlet.jsp-api</artifactId>
      <version>2.2.1</version>
      <scope>provided</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/taglibs/standard -->
    <dependency>
      <groupId>taglibs</groupId>
      <artifactId>standard</artifactId>
      <version>1.1.2</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.6.1</version>
        <configuration>
          <encoding>utf-8</encoding>
        </configuration>
      </plugin>

    </plugins>
  </build>
</project>

第二步：配置web.xml

<?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 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

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

  <!-- 配置springmvc -->
  <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>
    </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>

</web-app>

第三步：配置springmvc.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: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.jiangfx.controller"/>

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

    <!-- 开启注解模式 -->
    <mvc:annotation-driven/>
    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp"></property><!-- 视图路径 -->
        <property name="suffix" value=".jsp"></property><!-- 视图后缀名 -->
    </bean>
</beans>

第四步：配置applicationContext.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: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.jiangfx.service"/>

    <!-- 配置数据库 -->
    <!-- 加载配置文件 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/springredis"></property>
        <property name="user" value="root"></property>
        <property name="password" value="1234"></property>
    </bean>
    <!-- 配置sqlSessionFactory, 并将数据源注入 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 引入数据源 -->
        <property name="dataSource" ref="dataSource"></property>
        <!--载入mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <!--载入配置mapper映射的xml-->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>
    <!-- 配置映射接口 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.jiangfx.mapper"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>
    <!-- 配置声明式事务 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

实体类：entity。一定要实现序列化接口，不然redis没法对其操作

package com.jiangfx.entity;

import java.io.Serializable;

/**
 * Created by jiangfeixiang on 2018/4/27
 */
public class User implements Serializable {
    private Integer id;
    private String username;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                '}';
    }
}

第五步：Mapper层

编写UserMapper接口

package com.jiangfx.mapper;

import com.jiangfx.entity.User;

import java.util.List;

/**
 * Created by jiangfeixiang on 2018/4/27
 */
public interface UserMapper {
    /**
     * 查询
     * @return
     */
    List<User> getAll();

    /**
     * 插入
     * @param user
     */
    void insertUser(User user);
}

之后我们编写对应的UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.jiangfx.mapper.UserMapper">

    <!-- 查询 -->
    <select id="getAll" resultType="User">
        select * from user
    </select>

    <!--插入-->
    <insert id="insertUser" parameterType="User">
        insert into user(id,username) VALUES (#{id},#{username})
    </insert>
</mapper>

第六步：service层

首先是UserService接口

package com.jiangfx.service;

import com.jiangfx.entity.User;

import java.util.List;

/**
 * Created by jiangfeixiang on 2018/4/27
 */
public interface UserService {
    /**
     * 查询
     * @return
     */
    List<User> getAll();

    /**
     * 插入
     */
    void insertUser(User user);
}

然后是对应的实现类

package com.jiangfx.service.Impl;

import com.jiangfx.entity.User;
import com.jiangfx.mapper.UserMapper;
import com.jiangfx.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CachePut;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * Created by jiangfeixiang on 2018/4/27
 */
@Service
@Transactional
public class UserServiceImpl implements UserService {
    //注入userMapper
    @Autowired
    private UserMapper userMapper;

    /**
     * 查询所有
     * 使用@Cacheable地很诡异缓存策略，
     * 当缓存中有值，则返回缓存数据，否则则访问数据库
     * value引用缓存管理器，key定义缓存的键
     * @return
     */
    @Override
    // @Cacheable(value = "redisCacheManager",key = "'getAll'")
    public List<User> getAll() {
        List<User> userMapperAll = userMapper.getAll();
        System.out.println("没有走缓存就打印我...........");
        return userMapperAll;
    }

    /**
     * 添加用户
     */
    @Override
    // @CachePut(value = "redisCacheManager",key = "'insertUser'")
    public void insertUser(User user){
        userMapper.insertUser(user);
    }
}

第七部：controller层

UserController

package com.jiangfx.controller;

import com.jiangfx.entity.User;
import com.jiangfx.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import java.util.List;

/**
 * Created by jiangfeixiang on 2018/4/27
 */
@Controller
public class UserController {
    //注入
    @Autowired
    private UserService userService;

    /**
     * 查询所有用户
     */
    @RequestMapping(value = "/getAll",method = RequestMethod.GET)
    public String getAll(){
        List<User> list = userService.getAll();
        return "list";
    }
    /**
     * 跳转到添加页面
     */
    @RequestMapping(value = "/insertUserPage",method = RequestMethod.GET)
    public String insertUserPage(){
        return "save";
    }
    /**
     * 插入
     */
    @RequestMapping(value = "/insertUser",method = RequestMethod.POST)
    public String insertUser(User user){
        userService.insertUser(user);
        return "redirect:/getAll";
    }
}

JSP页面很简单，主要是为了测试用，一个欢迎页index.jsp，一个添加用户页save.jsp，一个操作成功跳转对应页面的list.jsp

index.jsp

 <a href="/getAll">查询</a>
    <a href="/insertUserPage">添加</a>

save.jsp

<form action="/insertUser" method="post">
        姓名：<input type="text" name="username">
        <input type="submit" value="提交">
    </form>

list.jsp我就直接一句话，成功。你们看着写。

之后启动测试看看是否成功。当然，如果你安照我的写，那么肯定不会错的。

接下来我们开始配置redis。

首先加入jar包：

      <!-- jedis -->
      <dependency>
          <groupId>redis.clients</groupId>
          <artifactId>jedis</artifactId>
          <version>2.7.3</version>
      </dependency>
      <!-- spring-data-redis -->
      <dependency>
          <groupId>org.springframework.data</groupId>
          <artifactId>spring-data-redis</artifactId>
          <version>1.6.2.RELEASE</version>
      </dependency>

然后：创建一个spring-data-redis.xml专门放置redis的配置，在来一个redis.properties属性文件，放置redis的属性配置。如下：

redis.properties

# 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=（你的地址）
# 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.maxWaitMillis=-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 

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连接池-->
    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxIdle" value="${spring.redis.pool.maxIdle}"></property>
        <property name="minIdle" value="${spring.redis.pool.minIdle}"></property>
        <property name="maxWaitMillis" value="${spring.redis.pool.maxWaitMillis}"></property>
    </bean>

    <!-- 配置jedis连接工厂 -->
    <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>

        <!--String-->
        <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>
        <!--hash-->
        <property name="hashKeySerializer">
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"></bean>
        </property>
        <property name="hashValueSerializer">
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"></bean>
        </property>
    </bean>

    <!--
　　　　定义缓存管理器redisCacheManager。
　　　　注意：cache-manager默认值是cacheManager,你的缓存管理器id要是命名是cacheManager，这里可以省略

    -->
    <!--1.使用注解驱动-->
    <cache:annotation-driven cache-manager="redisCacheManager"></cache:annotation-driven>

    <!--2.定义缓存管理器-->
    <bean id="redisCacheManager" class="org.springframework.data.redis.cache.RedisCacheManager">
        <!--通过构造方法注入redisTemplate-->
        <constructor-arg index="0" ref="redisTemplate"></constructor-arg>
        <!--定义超时时间，单位秒-->
        <property name="defaultExpiration" value="5000"></property>
        <!--设置缓存器名称-->
        <property name="cacheNames">
            <list>
                <value>redisCacheManager</value>
            </list>
        </property>
    </bean>
</beans>

 在applicationContext中引入redis的配置spring-data-redis.xml，当然你也可以配置在一起。

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

上面已经定义好缓存管理器了，下面我们就可以在serviceImpl中使用注解进行操作。如下：

在getAll查询方法上添加（serviceImpl中注释掉的那点）

 @Cacheable(value = "redisCacheManager",key = "'getAll'")

在insertUser添加方法上加入（serviceImpl中注释掉的那点）

@CachePut(value = "redisCacheManager",key = "'insertUser'")

注意：

value的值是你redis配置文件对应的缓存管理器的id值
key = "'insertUser'"：是你要缓存到redis中的值，下次spring会直接通过key获取结果。注意key的值中还有个单引号。

@Cacheable：适合查询，有返回值的方法上。因为，每次请求在进入方法之前，spring会先从缓存服务器中查找对应的key,如果有，就直接返回。否则再去查询数据库，在将结果通过key保存到缓存中。

@CachePut：适合添加，修改，void方法上。因为spring不会事先去缓存服务器中查询数据，而是直接执行方法，然后将结果通过key保存到缓存中。这样是防止数据不一致。

以上都写好后可以启动服务器，然后运行。为了明显，我在serviceImpl中查询方法中有个输出，你可以先注释掉缓存注解运行，发现每次都会输入。当你启动注解时，没有输入。说明spring每次回自动到缓存中查找数据。如下：

（下面的测试你们可以不用理会，这个是我在搭建环境的时候测试是否搭建成功。我的逻辑可能不够清晰，有问题可以联系我）

测试

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

/**
 * Created by jiangfeixiang on 2018/4/26
 */
public class SpringmvcRedisTest {
    private static ApplicationContext applicationContext;

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

    @Test
    public void testApplicationContext(){
        System.out.println("11111111111111111"+applicationContext);
    }
    @Test
    public void testRedisConnection(){
        RedisTemplate redisTemplate = (RedisTemplate)applicationContext.getBean("redisTemplate");
        redisTemplate.renameIfAbsent("k2", "k1");//如果key=k2存在，则将key修改为k1。前提是你的redis中得有k2。不然报错。这不你也可以不写。
        System.out.println(redisTemplate); //这里有输出也可以。
    }
}

以上测试这块，你可以不用写。

如何查看是否成功?我这里是通过可视化软件：Redis Desktop Manager，你也可以直接在redis-cli客户端查看

以上就是springmvc整合redis的过程，如果有什么问题都可以联系我。