ssm框架整合redis（demo）---通過cache方式

OxygenChen發表於2018-05-29

1.匯入相關jar包

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>cn.redis.demo</groupId>
    <artifactId>ssm_redis_demo</artifactId>
    <packaging>war</packaging>
    <version>1.0</version>
    <properties>
        <!-- spring版本號 -->
        <spring.version>4.3.2.RELEASE</spring.version>
        <!-- mybatis版本號 -->
        <mybatis.version>3.2.8</mybatis.version>
        <!-- log4j日誌檔案管理包版本 -->
        <slf4j.version>1.7.7</slf4j.version>
        <log4j.version>1.2.17</log4j.version>
        <oracle.version>10.2.0.5.0</oracle.version>
    </properties>
    <dependencies>
        <!-- 新增Spring-core包 -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- 新增spring-context包 -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- 新增spring-tx包 -->
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- 新增spring-jdbc包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- 為了方便進行單元測試，新增spring-test包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
         <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
           <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--新增aspectjweaver包 -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.9</version>
        </dependency>
        <!-- 新增mybatis的核心包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <!-- 新增mybatis與Spring整合的核心包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
        <!-- 新增servlet3.0核心包 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>javax.servlet.jsp-api</artifactId>
            <version>2.3.2-b01</version>
        </dependency>
        <!-- jstl -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- 新增druid連線池包 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.24</version>
        </dependency>
        <!-- 新增junit單元測試包 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.35</version>
        </dependency>

        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.3</version>
        </dependency>

        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.9.0</version>
        </dependency>

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

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-ehcache</artifactId>
            <version>1.0.0</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.47</version>
        </dependency>

     </dependencies>
    <build>
        <finalName>web</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.7.0</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <encoding>UTF-8</encoding>
                    <skip>true</skip>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.2.0</version>
                <configuration>
                    <includeEmptyDirectories>true</includeEmptyDirectories>
                    <!--
                    <webResources>
                        <webResource>
                            <directory>src/main/resources/production</directory>
                            <targetPath>WEB-INF/classes</targetPath>
                        </webResource>
                    </webResources>
                    -->
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <path>/</path>
                    <port>80</port>
                    <uriEncoding>UTF-8</uriEncoding>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.apache.tomcat.embed</groupId>
                        <artifactId>tomcat-embed-core</artifactId>
                        <version>7.0.85</version>
                    </dependency>
                </dependencies>
            </plugin>
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>9.2.24.v20180105</version>
                <configuration>
                    <httpConnector>
                        <port>80</port>
                    </httpConnector>
                    <webApp>
                        <contextPath>/</contextPath>
                        <defaultsDescriptor>webdefault.xml</defaultsDescriptor>
                    </webApp>
                </configuration>
            </plugin>
        </plugins>
        <!--
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <excludes>
                    <exclude>production/*</exclude>
                </excludes>
            </resource>
        </resources>
        -->
    </build>

</project>

2. redis.properties

redis.host=127.0.0.1
redis.port=6379
redis.password=
redis.maxIdle=100
redis.maxWait=1000
redis.testOnBorrow=true
redis.timeout=100000
defaultCacheExpireTime=3600

3.spring-redis

<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:mvc="http://www.springframework.org/schema/mvc"
  xmlns:util="http://www.springframework.org/schema/util"
  xmlns:aop="http://www.springframework.org/schema/aop"
  xmlns:context="http://www.springframework.org/schema/context"
  xmlns:task="http://www.springframework.org/schema/task" 
  xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
      http://www.springframework.org/schema/util
      http://www.springframework.org/schema/util/spring-util-4.3.xsd
      http://www.springframework.org/schema/mvc
      http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
      http://www.springframework.org/schema/aop
      http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context-4.3.xsd">


    <!-- 連線池基本引數配置，類似資料庫連線池 -->
     <context:property-placeholder location="classpath*:redis.properties" />

    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxIdle" value="${redis.maxIdle}" />
        <property name="testOnBorrow" value="${redis.testOnBorrow}"/>
    </bean>

    <!-- 連線池配置，類似資料庫連線池 -->
    <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.pass}"></property>
        <property name="poolConfig"  ref="poolConfig"></property> 
    </bean>

    <!-- 呼叫連線池工廠配置 -->
    <bean id="redisTemplate" class=" org.springframework.data.redis.core.RedisTemplate">
        <property name="connectionFactory" ref="connectionFactory"></property>

       <!--  如果不配置Serializer，那麼儲存的時候智慧使用String，如果用User型別儲存，那麼會提示錯誤User can't cast   
        to String！！！   -->
         <property name="keySerializer">  
            <bean  
            class="org.springframework.data.redis.serializer.StringRedisSerializer" />  
        </property>  
        <property name="valueSerializer">  
            <bean  
                class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />  
        </property> 
    </bean>
</beans>

4.在spring配置檔案中引入spring-redis

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

5.編寫JedisUtil.java工具類

package cn.redis.demo.util;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class JedisUtil {
    private static String ADDR = "127.0.01";
    private static int PORT = 6379;
    private static String AUTH = "redis";

    private static int MAX_ACTIVE = 1024;

    private static int MAX_IDLE = 200;

    private static int MAX_WAIT = 10000;

    private static int TIMEOUT = 10000;

    private static boolean TEST_ON_BORROW = true;

    private static JedisPool jedisPool = null;

    static {
        try{
            JedisPoolConfig config = new JedisPoolConfig();
            config.setMaxIdle(MAX_IDLE);
            config.setMaxWaitMillis(MAX_WAIT);
            config.setTestOnBorrow(TEST_ON_BORROW);
            jedisPool = new JedisPool(config,ADDR,PORT,TIMEOUT,AUTH);
        }catch (Exception e) {
            e.printStackTrace();
        }
    }

    public synchronized static Jedis getJedis(){
        try{
            if(jedisPool != null){
                Jedis jedis = jedisPool.getResource();
                return jedis;
            }else{
                return null;
            }
        }catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public static void returnResource(final Jedis jedis){
        if(jedis != null){
            jedisPool.returnResource(jedis);
        }
    }
}

6. 序列化工具類：SerializeUtil .java

package cn.redis.demo.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class SerializeUtil {
    public static byte[] serialize(Object object) {
        ObjectOutputStream oos = null;
        ByteArrayOutputStream baos = null;
        try {
            // 序列化
            baos = new ByteArrayOutputStream();
            oos = new ObjectOutputStream(baos);
            oos.writeObject(object);
            byte[] bytes = baos.toByteArray();
            return bytes;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static Object unserialize(byte[] bytes) {
        if (bytes == null)
            return null;
        ByteArrayInputStream bais = null;
        try {
            // 反序列化
            bais = new ByteArrayInputStream(bytes);
            ObjectInputStream ois = new ObjectInputStream(bais);
            return ois.readObject();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}

7.使用第三方快取redis：RedisCache .java

package cn.redis.demo.cache;

import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;

import org.apache.ibatis.cache.Cache;

import cn.redis.demo.util.JedisUtil;
import cn.redis.demo.util.SerializeUtil;

/*
 * 使用第三方快取伺服器，處理二級快取
 */
public class RedisCache implements Cache {
    private final ReadWriteLock readWriteLock = new ReentrantReadWriteLock();

    private String id;

    public RedisCache(final String id) {
        if (id == null) {
            throw new IllegalArgumentException("Cache instances require an ID");
        }
        this.id = id;

    }

    public String getId() {
        return this.id;
    }

    public void putObject(Object key, Object value) {
        JedisUtil.getJedis().set(SerializeUtil.serialize(key.toString()),
                SerializeUtil.serialize(value));

    }

    public Object getObject(Object key) {
        Object value = SerializeUtil.unserialize(JedisUtil.getJedis().get(
                SerializeUtil.serialize(key.toString())));
        return value;

    }

    public Object removeObject(Object key) {
        return JedisUtil.getJedis().expire(
                SerializeUtil.serialize(key.toString()), 0);

    }

    public void clear() {
        JedisUtil.getJedis().flushDB();
    }

    public int getSize() {
        return Integer.valueOf(JedisUtil.getJedis().dbSize().toString());
    }

    public ReadWriteLock getReadWriteLock() {
        return readWriteLock;
    }

}

測試例子

實體類（一定要序列化）

package cn.redis.demo.domain;

import java.io.Serializable;

public class User implements Serializable {
    /**
     * 
     */
    private static final long serialVersionUID = 139488668420852660L;
    private Integer id;
    private String username;
    private String password;
    private String email;

    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;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

}

mapper
介面

package cn.redis.demo.mapper;

import java.util.List;

import cn.redis.demo.domain.User;

public interface UserMapper {
    void addUser(User user);
    List<User> getall();
}

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="cn.redis.demo.mapper.UserMapper">
    <cache type="cn.redis.demo.cache.RedisCache" />
    <select id="getall" resultType="User">
        <![CDATA[
            select * from tb_user 
        ]]>
    </select>
    <insert id="addUser" parameterType="User">
        insert into tb_user (username,password,email) values(#{username},#{password},#{email})
    </insert>
</mapper>

3.. service
介面：

package cn.redis.demo.service;

import java.util.List;

import cn.redis.demo.domain.User;

public interface UserService {
    void addUser(User user);
    List<User> getall();
}

實現：

package cn.redis.demo.service.impl;

import java.util.List;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import cn.redis.demo.domain.User;
import cn.redis.demo.mapper.UserMapper;
import cn.redis.demo.service.UserService;
@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;
    @Override
    public List<User> getall() {
        // TODO Auto-generated method stub
        return userMapper.getall();
    }

    @Override
    @Transactional
    public void addUser(User user) {
        // TODO Auto-generated method stub
        userMapper.addUser(user);
    }

}

4.. Controller

package cn.redis.demo.web.controller;

import java.util.List;

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

import cn.redis.demo.domain.User;
import cn.redis.demo.service.UserService;

@Controller
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;

    @RequestMapping(value="/add",method=RequestMethod.GET)
    public String add(){
        return "add";
    }

    @RequestMapping(value="/add",method=RequestMethod.POST)
    public String add2(User user){
        userService.addUser(user);
        return "redirect:/user/getall";
    }

    @RequestMapping("/getall")
    public ModelAndView getall(){
        List<User> list=userService.getall();
        ModelAndView model=new ModelAndView("aaa");
        model.addObject("aalist", list);
        return model;
    }
}

5..jsp
檢視

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
    <c:forEach var="cc" items="${aalist }">
        ${cc.username }
    </c:forEach>
</body>
</html>

新增

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
    <form action="${pageContext.request.contextPath}/user/add" method="post">
        username    <input type="text" name="username"/>
        password    <input type="text" name="password"/>
        email       <input type="text" name="email"/>
        <input type="submit"/>
    </form>
</body>
</html>

6..執行結果

執行前：這裡寫圖片描述
進行查詢：通過日誌可以看出是從資料庫查

在看下redis客戶端是否有了新的key：

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ssm框架整合redis（demo）---通過cache方式

1.匯入相關jar包

2. redis.properties

3.spring-redis

4.在spring配置檔案中引入spring-redis

5.編寫JedisUtil.java工具類

6. 序列化工具類：SerializeUtil .java

7.使用第三方快取redis：RedisCache .java

測試例子

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