前言

　　读本文之前，需要大家对redis有所了解，大家可以去看一下我之前分享的redis安装及简单使用这一随笔，而本文我将跟大家分享学习一下redis与spring的集成。当然，首先需要打开我们的redis服务，之后才可以继续进行我们的集成。

　　项目主要是将从mysql数据库查询出来的数据缓存到redis数据库中，第二次查询就直接查询redis缓存，然后增删改操作将删除数据的缓存，下一次查询操作继续缓存，避免连接mysql进行查询，从而提高性能。redis的查询速度跟Mysql查询速度可以这么比较内存读写速度 / 磁盘读写速度

一、项目结构

二、Maven构建项目

　　用maven来构建项目环境，下载所依赖的JAR包

<?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.stonegeek</groupId>

  <artifactId>RedisSpringDemo</artifactId>

  <version>1.0-SNAPSHOT</version>

  <packaging>war</packaging>

  <name>RedisSpringDemo 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>

    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

    <spring.version>4.2.0.RELEASE</spring.version>

  </properties>

  <dependencies>

    <dependency>

      <groupId>junit</groupId>

      <artifactId>junit</artifactId>

      <version>4.11</version>

      <scope>test</scope>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-context</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-aop</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-webmvc</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-web</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>javax.servlet</groupId>

      <artifactId>jstl</artifactId>

      <version>1.2</version>

    </dependency>

    <dependency>

      <groupId>commons-logging</groupId>

      <artifactId>commons-logging</artifactId>

      <version>1.1.3</version>

    </dependency>

    <dependency>

      <groupId>org.codehaus.jackson</groupId>

      <artifactId>jackson-mapper-asl</artifactId>

      <version>1.9.13</version>

    </dependency>

    <dependency>

      <groupId>com.fasterxml.jackson.core</groupId>

      <artifactId>jackson-annotations</artifactId>

      <version>2.6.1</version>

    </dependency>

    <dependency>

      <groupId>com.fasterxml.jackson.core</groupId>

      <artifactId>jackson-core</artifactId>

      <version>2.6.1</version>

    </dependency>

    <dependency>

      <groupId>com.fasterxml.jackson.core</groupId>

      <artifactId>jackson-databind</artifactId>

      <version>2.6.1</version>

    </dependency>

    <!-- spring mvc related.....end -->

    <!-- mybatis orm related.....start -->

    <dependency>

      <groupId>org.springframework</groupId>

      <artifactId>spring-orm</artifactId>

      <version>${spring.version}</version>

    </dependency>

    <dependency>

      <groupId>org.mybatis</groupId>

      <artifactId>mybatis-spring</artifactId>

      <version>1.2.3</version>

    </dependency>

    <dependency>

      <groupId>mysql</groupId>

      <artifactId>mysql-connector-java</artifactId>

      <version>5.1.36</version>

    </dependency>

    <dependency>

      <groupId>org.mybatis</groupId>

      <artifactId>mybatis</artifactId>

      <version>3.3.0</version>

    </dependency>

    <dependency>

      <groupId>c3p0</groupId>

      <artifactId>c3p0</artifactId>

      <version>0.9.1.2</version>

    </dependency>

    <dependency>

      <groupId>org.slf4j</groupId>

      <artifactId>slf4j-log4j12</artifactId>

      <version>1.7.12</version>

    </dependency>

    <!-- mybatis orm related.....end -->

    <!-- project log related.....start -->

    <dependency>

      <groupId>log4j</groupId>

      <artifactId>log4j</artifactId>

      <version>1.2.17</version>

    </dependency>

    <!-- project log related.....end -->

    <!-- redis cache related.....start -->

    <dependency>

      <groupId>org.springframework.data</groupId>

      <artifactId>spring-data-redis</artifactId>

      <version>1.6.0.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>redis.clients</groupId>

      <artifactId>jedis</artifactId>

      <version>2.7.3</version>

    </dependency>

  </dependencies>

  <build>

    <finalName>RedisSpringDemo</finalName>

    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->

      <plugins>

        <plugin>

          <artifactId>maven-clean-plugin</artifactId>

          <version>3.0.0</version>

        </plugin>

        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->

        <plugin>

          <artifactId>maven-resources-plugin</artifactId>

          <version>3.0.2</version>

        </plugin>

        <plugin>

          <artifactId>maven-compiler-plugin</artifactId>

          <version>3.7.0</version>

        </plugin>

        <plugin>

          <artifactId>maven-surefire-plugin</artifactId>

          <version>2.20.1</version>

        </plugin>

        <plugin>

          <artifactId>maven-war-plugin</artifactId>

          <version>3.2.0</version>

        </plugin>

        <plugin>

          <artifactId>maven-install-plugin</artifactId>

          <version>2.5.2</version>

        </plugin>

        <plugin>

          <artifactId>maven-deploy-plugin</artifactId>

          <version>2.8.2</version>

        </plugin>

      </plugins>

    </pluginManagement>

  </build>

</project>

三、配置信息properties文件

1、jdbc.properties

jdbc.host=127.0.0.1

jdbc.database=bjsxt

jdbc.port=3306

jdbc.username=root

jdbc.password=xiaokai960201

2、redis.properties

# Redis settings

redis.host=192.168.43.230

redis.port=6379

#redis.pass=password

redis.dbIndex=0

redis.expiration=3000

redis.maxIdle=300

redis.maxActive=600

redis.maxWait=1000

redis.testOnBorrow=true

3、log4j.properties

#设置日志的级别，定义日志信息的输出目的

log4j.rootLogger=DEBUG, A1 ,R

#定义A1的输出目的地为控制台

log4j.appender.A1=org.apache.log4j.ConsoleAppender

#布局为 PatternLayout 可以灵活地指定布局模式。

log4j.appender.A1.layout=org.apache.log4j.PatternLayout

#设置输出格式

log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH\:mm\:ss} [%c]-[%p] %m%n

#定义R的输出目的地为文件，并且文件大小到达指定尺寸的时候产生一个新的文件

log4j.appender.R=org.apache.log4j.RollingFileAppender

#设置输出的文件地址

log4j.appender.R.File=D:\\Test_Log4j.log

#设置文件大小伟100 kb 文件到达100时，产生一个新文件，

#MaxBackupIndex 最大记录的文件数为1 查过一个文件删除文件较早的。

log4j.appender.R.MaxFileSize=100KB log4j.appender.R.MaxBackupIndex=1

#以下和上面一样

log4j.appender.R.layout=org.apache.log4j.PatternLayout

log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n

四、配置文件

1、applicationContext.xml

<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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

            http://www.springframework.org/schema/beans/spring-beans-4.0.xsd

            http://www.springframework.org/schema/context

            http://www.springframework.org/schema/context/spring-context-4.0.xsd

            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd

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

    <!-- 使用注解的自扫描功能-->

    <context:component-scan base-package="com.stonegeek.serviceImpl" />

    <context:component-scan base-package="com.stonegeek.utils" />
　　
　　

    <bean

            class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

        <property name="locations">

            <list>

                <value>classpath:jdbc.properties</value>

                <value>classpath:redis.properties</value>

            </list>

        </property>

    </bean>

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource "

          destroy-method="close">

        <property name="driverClass" value="com.mysql.jdbc.Driver" />

        <property name="jdbcUrl"

                  value="jdbc:mysql://${jdbc.host}:${jdbc.port}/${jdbc.database}?useUnicode=true&amp;characterEncoding=utf8" />

        <property name="user" value="${jdbc.username}" />

        <property name="password" value="${jdbc.password}" />

    </bean>

    <!-- mybatis的配置映射文件-->

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

        <property name="dataSource" ref="dataSource" />

        <property name="mapperLocations" value="classpath:Mapper/*.xml" />

    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

        <property name="basePackage" value="com.stonegeek.dao" />

        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />

    </bean>

    <!-- redis config start -->

    <!-- 配置JedisPoolConfig实例 -->

    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">

        <property name="maxIdle" value="${redis.maxIdle}" />

        <property name="maxTotal" value="${redis.maxActive}" />

        <property name="maxWaitMillis" value="${redis.maxWait}" />

        <property name="testOnBorrow" value="${redis.testOnBorrow}" />

    </bean>

    <!-- 配置JedisConnectionFactory -->

    <bean id="jedisConnectionFactory"

          class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">

        <property name="hostName" value="${redis.host}" />

        <property name="port" value="${redis.port}" />

        <!-- <property name="password" value="${redis.pass}" /> -->

        <property name="database" value="${redis.dbIndex}" />

        <property name="poolConfig" ref="poolConfig" />

    </bean>

    <!-- 配置RedisTemplate -->

    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">

        <property name="connectionFactory" ref="jedisConnectionFactory" />

    </bean>

    <!-- 配置RedisCacheManager -->

    <bean id="redisCacheManager" class="org.springframework.data.redis.cache.RedisCacheManager">

        <constructor-arg name="redisOperations" ref="redisTemplate" />

        <property name="defaultExpiration" value="${redis.expiration}" />

    </bean>

    <!-- 配置RedisCacheConfig -->

    <bean id="redisCacheConfig" class="com.stonegeek.utils.RedisCacheConfig">

        <constructor-arg ref="jedisConnectionFactory" />

        <constructor-arg ref="redisTemplate" />

        <constructor-arg ref="redisCacheManager" />

    </bean>

    <!-- redis config end -->

</beans>

2、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:p="http://www.springframework.org/schema/p"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:mvc="http://www.springframework.org/schema/mvc"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd

                        http://www.springframework.org/schema/context

                        http://www.springframework.org/schema/context/spring-context-3.1.xsd

                        http://www.springframework.org/schema/mvc

                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

    <!-- 添加注解驱动  使用注解标注的类生效-->

    <mvc:annotation-driven />

    <!-- 设置能访问静态资源 -->

    <mvc:default-servlet-handler/>

    <!--扫描controller-->

    <context:component-scan base-package="com.stonegeek.controller" />

    <!-- jsp page related... start -->

    <bean id="viewResolver"

          class="org.springframework.web.servlet.view.UrlBasedViewResolver">

        <property name="viewClass"

                  value="org.springframework.web.servlet.view.JstlView" />

        <property name="prefix" value="/WEB-INF/jsp/" />

        <property name="suffix" value=".jsp" />

    </bean>

    <bean id="mappingJacksonHttpMessageConverter"

          class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">

        <property name="supportedMediaTypes">

            <list>

                <value>application/json;charset=UTF-8</value>

            </list>

        </property>

    </bean>

    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

        <property name="messageConverters">

            <list>

                <ref bean="mappingJacksonHttpMessageConverter" />

            </list>

        </property>

    </bean>

</beans>

3、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">
  <display-name>Archetype Created Web Application</display-name>

  <welcome-file-list>
    <welcome-file>/index.jsp</welcome-file>
  </welcome-file-list>

  <!-- 加载spring bean -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/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>springfilter</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>
  </filter>

  <filter-mapping>
    <filter-name>springfilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <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/springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
    <async-supported>true</async-supported>
  </servlet>
  <servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

五、项目主要代码

1、dao层

package com.stonegeek.dao;

import com.stonegeek.pojo.User;

import java.util.List;

public interface UserMapper {

    List<User> selectAll();

    User selectByPrimaryKey(String unumber);

    int insert(User record);

    int insertSelective(User record);

    int deleteOne(String unumber);

}

<?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.stonegeek.dao.UserMapper" >

  <resultMap id="BaseResultMap" type="com.stonegeek.pojo.User" >

    <result column="unumber" property="unumber" jdbcType="VARCHAR" />

    <result column="uname" property="uname" jdbcType="VARCHAR" />

    <result column="pwd" property="pwd" jdbcType="VARCHAR" />

    <result column="sex" property="sex" jdbcType="VARCHAR" />

    <result column="fav" property="fav" jdbcType="VARCHAR" />

  </resultMap>

  <select id="selectAll" resultMap="BaseResultMap">

    select

    *

    from user

  </select>

  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String" >

    select

    *

    from user

    where unumber = #{unumber,jdbcType=VARCHAR}

  </select>

  <insert id="insert" parameterType="com.stonegeek.pojo.User" >

    insert into user (unumber, uname, pwd,

      sex, fav)

    values (#{unumber,jdbcType=VARCHAR}, #{uname,jdbcType=VARCHAR}, #{pwd,jdbcType=VARCHAR},

      #{sex,jdbcType=VARCHAR}, #{fav,jdbcType=VARCHAR})

  </insert>

  <insert id="insertSelective" parameterType="com.stonegeek.pojo.User" >

    insert into user

    <trim prefix="(" suffix=")" suffixOverrides="," >

      <if test="unumber != null" >

        unumber,

      </if>

      <if test="uname != null" >

        uname,

      </if>

      <if test="pwd != null" >

        pwd,

      </if>

      <if test="sex != null" >

        sex,

      </if>

      <if test="fav != null" >

        fav,

      </if>

    </trim>

    <trim prefix="values (" suffix=")" suffixOverrides="," >

      <if test="unumber != null" >

        #{unumber,jdbcType=VARCHAR},

      </if>

      <if test="uname != null" >

        #{uname,jdbcType=VARCHAR},

      </if>

      <if test="pwd != null" >

        #{pwd,jdbcType=VARCHAR},

      </if>

      <if test="sex != null" >

        #{sex,jdbcType=VARCHAR},

      </if>

      <if test="fav != null" >

        #{fav,jdbcType=VARCHAR},

      </if>

    </trim>

  </insert>

  <delete id="deleteOne" parameterType="java.lang.String">

    delete from user where unumber = #{unumber}

  </delete>

</mapper>

2、model层

package com.stonegeek.pojo;

import java.io.Serializable;

public class User implements Serializable{

    private static final long serialVersionUID = 1L;

    private String unumber;

    private String uname;

    private String pwd;

    private String sex;

    private String fav;

    public String getUnumber() {

        return unumber;

    }

    public void setUnumber(String unumber) {

        this.unumber = unumber == null ? null : unumber.trim();

    }

    public String getUname() {

        return uname;

    }

    public void setUname(String uname) {

        this.uname = uname == null ? null : uname.trim();

    }

    public String getPwd() {

        return pwd;

    }

    public void setPwd(String pwd) {

        this.pwd = pwd == null ? null : pwd.trim();

    }

    public String getSex() {

        return sex;

    }

    public void setSex(String sex) {

        this.sex = sex == null ? null : sex.trim();

    }

    public String getFav() {

        return fav;

    }

    public void setFav(String fav) {

        this.fav = fav == null ? null : fav.trim();

    }

}

注意：

要想使用redis存对象，一定要让实体类实现Serializable接口，否则会报错。

3、controller层

package com.stonegeek.controller;

import com.stonegeek.pojo.User;

import com.stonegeek.service.IUserService;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.ResponseBody;

import javax.annotation.Resource;

import java.util.ArrayList;

import java.util.List;

/**

 * Created by StoneGeek on 2018/5/2.

 */

@Controller

@RequestMapping("/redisTest")

public class UserController {

    @Resource

    private IUserService userService;

    @RequestMapping(value = "/selectall", method = RequestMethod.GET)

    @ResponseBody

    public Object showUsers() {

        List<User> userList = new ArrayList<User>();

        userList = userService.selectAll();

        System.out.println("--------------------------");

        System.out.println(userList);

        System.out.println("--------------------------");

        return userList;

    }

    @RequestMapping(value = "/delUser/{unumber}", method = RequestMethod.GET)

    @ResponseBody

    public Object delUser(@PathVariable String unumber) {

        System.out.println(unumber);

        userService.deleteOne(unumber);

        return "ok";

    }

}

4、service层

package com.stonegeek.service;

import com.stonegeek.dao.UserMapper;

import com.stonegeek.pojo.User;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import org.springframework.transaction.annotation.Propagation;

import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;

import java.util.List;

/**

 * Created by StoneGeek on 2018/5/2.

 */

public interface IUserService {

    public User getUserById(String  unumber);

    public List<User> selectAll();

    public int deleteOne(String unumber);

}

package com.stonegeek.serviceImpl;

import com.stonegeek.dao.UserMapper;

import com.stonegeek.pojo.User;

import com.stonegeek.service.IUserService;

import org.springframework.cache.annotation.CacheEvict;

import org.springframework.cache.annotation.Cacheable;

import org.springframework.stereotype.Service;

import org.springframework.transaction.annotation.Propagation;

import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;

import java.util.List;

/**

 * Created by Xiaokai on 2018/5/2.

 */

@Service("userService")

@Transactional(propagation= Propagation.REQUIRED, rollbackFor=Exception.class)

public class UserServiceImpl implements IUserService{

    @Resource

    private UserMapper iUserDao;
　　

    @Cacheable("getUserById")

    @Override

    public User getUserById(String unumber) {

        return this.iUserDao.selectByPrimaryKey(unumber);

    }

    @Cacheable("selectAll")

    @Override

    public List<User> selectAll() {

        return iUserDao.selectAll();

    }

    @CacheEvict(value= {"selectAll","getUserById"},allEntries=true)

    @Override

    public int deleteOne(String unumber) {

        return iUserDao.deleteOne(unumber);

    }

}

 @Cacheable("a")注解的意义就是把该方法的查询结果放到redis中去，下一次再发起查询就去redis中去取，存在redis中的数据的key就是a；

 @CacheEvict(value={"a","b"},allEntries=true) 的意思就是执行该方法后要清除redis中key名称为a,b的数据；

5、utils工具类

package com.stonegeek.utils;

/**

 * Created by StoneGeek on 2018/5/2.

 * 通过spring管理redis缓存配置

 */

import java.lang.reflect.Method;

import org.springframework.cache.annotation.CachingConfigurerSupport;

import org.springframework.cache.annotation.EnableCaching;

import org.springframework.cache.interceptor.KeyGenerator;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.data.redis.cache.RedisCacheManager;

import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;

import org.springframework.data.redis.core.RedisTemplate;

@Configuration

@EnableCaching

public class RedisCacheConfig extends CachingConfigurerSupport {

    private volatile JedisConnectionFactory jedisConnectionFactory;

    private volatile RedisTemplate<String, String> redisTemplate;

    private volatile RedisCacheManager redisCacheManager;

    public RedisCacheConfig() {

        super();

    }

    /**

     * 带参数的构造方法 初始化所有的成员变量

     *

     * @param jedisConnectionFactory

     * @param redisTemplate

     * @param redisCacheManager

     */

    public RedisCacheConfig(JedisConnectionFactory jedisConnectionFactory, RedisTemplate<String, String> redisTemplate,

                            RedisCacheManager redisCacheManager) {

        this.jedisConnectionFactory = jedisConnectionFactory;

        this.redisTemplate = redisTemplate;

        this.redisCacheManager = redisCacheManager;

    }

    public JedisConnectionFactory getJedisConnecionFactory() {

        return jedisConnectionFactory;

    }

    public RedisTemplate<String, String> getRedisTemplate() {

        return redisTemplate;

    }

    public RedisCacheManager getRedisCacheManager() {

        return redisCacheManager;

    }

    @Bean

    public KeyGenerator customKeyGenerator() {

        return new KeyGenerator() {

            @Override

            public Object generate(Object target, Method method, Object... objects) {

                StringBuilder sb = new StringBuilder();

                sb.append(target.getClass().getName());

                sb.append(method.getName());

                for (Object obj : objects) {

                    sb.append(obj.toString());

                }

                return sb.toString();

            }

        };

    }

}

六、项目结果展示及说明

访问http://localhost:8080/redisTest/selectall

控制台输出（部分）：

2018-05-03 11:08:23 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] DispatcherServlet with name 'SpringMVC' processing GET request for [/redisTest/selectall]

2018-05-03 11:08:23 [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping]-[DEBUG] Looking up handler method for path /redisTest/selectall

2018-05-03 11:08:23 [org.springframework.cache.annotation.AnnotationCacheOperationSource]-[DEBUG] Adding cacheable method 'selectAll' with attribute: [CacheableOperation[public java.util.List com.stonegeek.serviceImpl.UserServiceImpl.selectAll()] caches=[selectAll] | key='' | keyGenerator='' | cacheManager='' | cacheResolver='' | condition='' | unless='']

2018-05-03 11:08:23 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Opening RedisConnection

2018-05-03 11:08:23 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Closing Redis Connection

2018-05-03 11:08:23 [org.mybatis.spring.SqlSessionUtils]-[DEBUG] Creating a new SqlSession

2018-05-03 11:08:25 [com.stonegeek.dao.UserMapper.selectAll]-[DEBUG] ==> Preparing: select * from user

2018-05-03 11:08:26 [com.stonegeek.dao.UserMapper.selectAll]-[DEBUG] ==> Parameters:

2018-05-03 11:08:26 [com.stonegeek.dao.UserMapper.selectAll]-[DEBUG] <== Total: 2

2018-05-03 11:08:26 [org.mybatis.spring.SqlSessionUtils]-[DEBUG] Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2ca4c9ac]

2018-05-03 11:08:26 [org.springframework.jdbc.datasource.DataSourceUtils]-[DEBUG] Returning JDBC Connection to DataSource

2018-05-03 11:08:26 [com.mchange.v2.resourcepool.BasicResourcePool]-[DEBUG] trace com.mchange.v2.resourcepool.BasicResourcePool@5259cb3b [managed: 3, unused: 2, excluded: 0] (e.g. com.mchange.v2.c3p0.impl.NewPooledConnection@7f53b569)

2018-05-03 11:08:26 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Opening RedisConnection

2018-05-03 11:08:26 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Closing Redis Connection

--------------------------

[com.stonegeek.pojo.User@104d8d17, com.stonegeek.pojo.User@52389362]

--------------------------

2018-05-03 11:08:26 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] Successfully completed request

此结果是第一次进行查询时log4j打印在console上的日志信息（挑选的部分重要信息），从这日志信息大概可以看出先连接到myql跟redis、然后将mysql查出的selectAll数据缓存到redis上并打印到控制台上

再次访问http://localhost:8080/redisTest/selectall

2018-05-03 11:16:11 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] DispatcherServlet with name 'SpringMVC' processing GET request for [/redisTest/selectall]

2018-05-03 11:16:11 [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping]-[DEBUG] Looking up handler method for path /redisTest/selectall

2018-05-03 11:16:11 [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping]-[DEBUG] Returning handler method [public java.lang.Object com.stonegeek.controller.UserController.showUsers()]

2018-05-03 11:16:11 [org.springframework.beans.factory.support.DefaultListableBeanFactory]-[DEBUG] Returning cached instance of singleton bean 'userController'

2018-05-03 11:16:11 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] Last-Modified value for [/redisTest/selectall] is: -1

2018-05-03 11:16:11 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Opening RedisConnection

2018-05-03 11:16:11 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Closing Redis Connection

--------------------------

[com.stonegeek.pojo.User@5aee0851, com.stonegeek.pojo.User@68bdcc8a]

--------------------------

2018-05-03 11:16:11 [org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor]-[DEBUG] Written [[com.stonegeek.pojo.User@5aee0851, com.stonegeek.pojo.User@68bdcc8a]] as "application/json;charset=UTF-8" using [org.springframework.http.converter.json.MappingJackson2HttpMessageConverter@27f9bd05]

2018-05-03 11:16:11 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] Null ModelAndView returned to DispatcherServlet with name 'SpringMVC': assuming HandlerAdapter completed request handling

2018-05-03 11:16:11 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] Successfully completed request

可以看出，此次操作并没有与mysql交互，直接从打开redis连接查询缓存所得

之后在进行一次删除操作

访问http://localhost:8080/redisTest/delUser/20180103

2018-05-03 11:18:14 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] DispatcherServlet with name 'SpringMVC' processing GET request for [/redisTest/delUser/20180103]

2018-05-03 11:18:14 [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping]-[DEBUG] Looking up handler method for path /redisTest/delUser/20180103

2018-05-03 11:18:14 [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping]-[DEBUG] Returning handler method [public java.lang.Object com.stonegeek.controller.UserController.delUser(java.lang.String)]

2018-05-03 11:18:14 [org.springframework.beans.factory.support.DefaultListableBeanFactory]-[DEBUG] Returning cached instance of singleton bean 'userController'

2018-05-03 11:18:14 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] Last-Modified value for [/redisTest/delUser/20180103] is: -1

20180103

2018-05-03 11:18:14 [org.mybatis.spring.SqlSessionUtils]-[DEBUG] Creating a new SqlSession

2018-05-03 11:18:14 [org.mybatis.spring.SqlSessionUtils]-[DEBUG] SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2566bd74] was not registered for synchronization because synchronization is not active

2018-05-03 11:18:14 [org.springframework.jdbc.datasource.DataSourceUtils]-[DEBUG] Fetching JDBC Connection from DataSource

2018-05-03 11:18:14 [com.mchange.v2.resourcepool.BasicResourcePool]-[DEBUG] trace com.mchange.v2.resourcepool.BasicResourcePool@5259cb3b [managed: 3, unused: 2, excluded: 0] (e.g. com.mchange.v2.c3p0.impl.NewPooledConnection@7f53b569)

2018-05-03 11:18:14 [org.mybatis.spring.transaction.SpringManagedTransaction]-[DEBUG] JDBC Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@3d69c864] will not be managed by Spring

2018-05-03 11:18:14 [com.stonegeek.dao.UserMapper.deleteOne]-[DEBUG] ==>  Preparing: delete from user where unumber = ?

2018-05-03 11:18:14 [com.stonegeek.dao.UserMapper.deleteOne]-[DEBUG] ==> Parameters: 20180103(String)

2018-05-03 11:18:15 [com.stonegeek.dao.UserMapper.deleteOne]-[DEBUG] <==    Updates: 1

2018-05-03 11:18:15 [org.mybatis.spring.SqlSessionUtils]-[DEBUG] Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2566bd74]

2018-05-03 11:18:15 [org.springframework.jdbc.datasource.DataSourceUtils]-[DEBUG] Returning JDBC Connection to DataSource

2018-05-03 11:18:15 [com.mchange.v2.resourcepool.BasicResourcePool]-[DEBUG] trace com.mchange.v2.resourcepool.BasicResourcePool@5259cb3b [managed: 3, unused: 2, excluded: 0] (e.g. com.mchange.v2.c3p0.impl.NewPooledConnection@7f53b569)

2018-05-03 11:18:15 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Opening RedisConnection

2018-05-03 11:18:15 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Closing Redis Connection

2018-05-03 11:18:15 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Opening RedisConnection

2018-05-03 11:18:15 [org.springframework.data.redis.core.RedisConnectionUtils]-[DEBUG] Closing Redis Connection

2018-05-03 11:18:15 [org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor]-[DEBUG] Written [ok] as "text/html" using [org.springframework.http.converter.StringHttpMessageConverter@7065def5]

2018-05-03 11:18:15 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] Null ModelAndView returned to DispatcherServlet with name 'SpringMVC': assuming HandlerAdapter completed request handling

2018-05-03 11:18:15 [org.springframework.web.servlet.DispatcherServlet]-[DEBUG] Successfully completed request

然后再次查询所有用户信息