ssm整合redis

1、首先你的有個SSM工程

2、添加引用

<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>SSMRedisDemo</groupId>
    <artifactId>SSMRedisDemo</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>SSMRedisDemo Maven Webapp</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <spring.version>4.2.0.RELEASE</spring.version>
    </properties>

    <dependencies>

        <!-- spring mvc related.....start --> <!-- TODO: replace jackson with fastjson -->
        <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>
        <!-- redis cache related.....end -->

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <warSourceDirectory>WebContent</warSourceDirectory>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project> 

3、系統參數配置

jdbc.properties

driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/user
username=root
password=root
initialSize=10
maxActive=300
maxIdle=20
minIdle=1
maxWait=60000

log4j.properties

 log4j.rootLogger=DEBUG,Console,File  
#定義日誌輸出目的地爲控制檯  
log4j.appender.Console=org.apache.log4j.ConsoleAppender  
log4j.appender.Console.Target=System.out  
#能夠靈活地指定日誌輸出格式，下面一行是指定具體的格式  
log4j.appender.Console.layout = org.apache.log4j.PatternLayout  
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n  
  
#文件大小到達指定尺寸的時候產生一個新的文件  
log4j.appender.File = org.apache.log4j.RollingFileAppender  
#指定輸出目錄  
log4j.appender.File.File = logs/ssm.log  
#定義文件最大大小  
log4j.appender.File.MaxFileSize = 10MB  
# 輸出因此日誌，若是換成DEBUG表示輸出DEBUG以上級別日誌  
log4j.appender.File.Threshold = ALL  
log4j.appender.File.layout = org.apache.log4j.PatternLayout  
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

redis.properties

# Redis settings  
redis.host=127.0.0.1
redis.port=6379
#redis.pass=password
redis.dbIndex=0
redis.expiration=3000
redis.maxIdle=300
redis.maxActive=600
redis.maxWait=1000
redis.testOnBorrow=true

4、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">
    <!-- class annotation related... start -->
    <context:component-scan base-package="com.ssm.serviceImpl" />
    <context:component-scan base-package="com.ssm.utils" />
    <!-- class annotation related... end -->
    <!-- mybatis related... start -->
    <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}" />
        <property name="acquireIncrement" value="1" />
        <property name="initialPoolSize" value="5" />
        <property name="maxPoolSize" value="20" />
        <property name="minPoolSize" value="5" />
        <property name="maxStatements" value="100" />
        <property name="testConnectionOnCheckout" value="true" />
    </bean>

    <!-- spring和MyBatis完美整合，不須要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 自動掃描mapping.xml文件 <property name="mapperLocations" value="classpath:com/ssm/mapper/*.xml"></property> -->
    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ssm.dao" />
    </bean>
    <!-- mybatis related... end -->

    <!-- transaction config related... start -->
    <tx:annotation-driven transaction-manager="transactionManager" />
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!-- transaction config related... end -->

    <!-- redis config start -->
    <!-- 配置JedisPoolConfig實例 -->
    <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.ssm.utils.RedisCacheConfig">
        <constructor-arg ref="jedisConnectionFactory" />
        <constructor-arg ref="redisTemplate" />
        <constructor-arg ref="redisCacheManager" />
    </bean>
    <!-- redis config end -->
</beans>  

5、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">    
    <!-- class annotation related... start 
    <context:component-scan base-package="com.ssm.controller" />
     class annotation related... end 
     -->
     <!-- 添加註解驅動  使用註解標註的類生效-->      
    <mvc:annotation-driven />
    <!-- 設置能訪問靜態資源 -->    
    <mvc:default-servlet-handler/>
    <!--掃描controller-->
    <context:component-scan base-package="com.ssm.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>
    <!-- jsp page related... end -->

    <!-- rest json related... start -->
    <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>
    <!-- rest json related... end -->
</beans>  

6、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>

    <!-- 加載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>

    <!-- 編碼過濾器 -->
    <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>

    <!-- Spring MVC servlet -->
    <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> 

7、UserController

package com.it.demo.controller;

import javax.annotation.Resource;

import org.apache.log4j.Logger;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.it.demo.bean.UserBaseInfo;
import com.it.demo.service.IUserService;

@Controller  
@RequestMapping("/test")  
public class TestController {
    private static Logger logger = Logger.getLogger(TestController.class);
    @Resource
    private IUserService userService;

    // 註冊請求
    @RequestMapping("/demo")
    @ResponseBody
    private Object demo(Long id) {
        UserBaseInfo user = userService.queryUserInfo(id);
        user.setuNick("我是誰");
        return user;
    }
    
    // 添加緩存
    @RequestMapping("/demo4")
    @ResponseBody
    private Object demo4(Long id) {
        UserBaseInfo user = userService.queryUserInfo(id);
        return user;
    }
    
    // 刪除緩存
    @RequestMapping("/demo5")
    @ResponseBody
    private Object demo5(Long id) {
        UserBaseInfo user = userService.queryUserById(id);
        return user;
    }
}
8、實體序列化

9、服務實現層添加緩存

package com.it.demo.service.impl;

import javax.annotation.Resource;

import org.apache.log4j.Logger;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import com.it.demo.bean.UserBaseInfo;
import com.it.demo.dao.UserBaseInfoMapper;
import com.it.demo.service.IUserService;

@Service("userService")
public class UserServiceImpl implements IUserService {

@Resource    
private UserBaseInfoMapper userBaseInfoMapper;

private static Logger logger = Logger.getLogger(UserServiceImpl.class);

@Cacheable("queryUserInfo") 
public UserBaseInfo queryUserInfo(Long id) {
    return userBaseInfoMapper.selectByPrimaryKey(id);
} 

@CacheEvict(value= {"queryUserInfo"},allEntries=true)
public UserBaseInfo queryUserById(Long id) {
    return userBaseInfoMapper.selectByPrimaryKey(id);
} 
}
小注：

緩存機制說明：全部的查詢結果都放進了緩存，也就是把MySQL查詢的結果放到了redis中去，
 * 而後第二次發起該條查詢時就能夠從redis中去讀取查詢的結果，從而不與MySQL交互，從而達到優化的效果，
 * redis的查詢速度之於MySQL的查詢速度至關於 內存讀寫速度 /硬盤讀寫速度 
 * @Cacheable("a")註解的意義就是把該方法的查詢結果放到redis中去，下一次再發起查詢就去redis中去取，存在redis中的數據的key就是a；
 * @CacheEvict(value={"a","b"},allEntries=true) 的意思就是執行該方法後要清除redis中key名稱爲a,b的數據；

 緩存主要在service層進行，查詢的結果會緩存，把對象序列號存到redis中去，key就是註解中的參數，例如@Cacheable("findUsers"): 存在redis中的key就是findUsers。緩存了這個結果以後再次請求這個方法就不會去數據庫中查，而是從redis緩存中讀取數據，這樣就減小了跟數據庫之間的交互。而後修改、刪除、增長操做就會清除緩存，保持數據的一致性。

10、RedisCacheConfig: 須要增長這個配置類，會在applicationContex配置文件中註冊這個bean。

package com.it.demo.springmvc;

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;

/**
 * 經過spring管理redis緩存配置
 * 
 * @author Administrator
 *
 */
@Configuration  
@EnableCaching 
public class RedisCacheConfig extends CachingConfigurerSupport {
    private volatile JedisConnectionFactory jedisConnectionFactory;
    private volatile RedisTemplate<String, String> redisTemplate;
    private volatile RedisCacheManager redisCacheManager;

    public RedisCacheConfig() {
        super();
    }

    /**
     * 帶參數的構造方法 初始化全部的成員變量
     * 
     * @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() {
            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();
            }
        };
    }
}

11、接口測試

一、表數據

二、

查詢 ：

http://127.0.0.1:8080/demo-webapp/test/demo4?id=10

輸出：

{"uId":10,"uNick":"Nick555","uName":"Name333","uPhone":"18810910555","uTel":null,"uIdType":1,"uIdCode":"uCode17555","uAddr":"安徽省鳳陽縣小崗村555戶","uSex":1,"uSign":null,"uSchool":"阜陽市紅旗中學","uAge":19,"uBirth":975340800000}

三、修改u_name的值爲Name555

查詢：

http://127.0.0.1:8080/demo-webapp/test/demo4?id=10

輸出：

{"uId":10,"uNick":"Nick555","uName":"Name333","uPhone":"18810910555","uTel":null,"uIdType":1,"uIdCode":"uCode17555","uAddr":"安徽省鳳陽縣小崗村555戶","uSex":1,"uSign":null,"uSchool":"阜陽市紅旗中學","uAge":19,"uBirth":975340800000}

四、清除Redis緩存再查詢

查詢：

http://127.0.0.1:8080/demo-webapp/test/demo5?id=10

http://127.0.0.1:8080/demo-webapp/test/demo4?id=10

輸出：

{"uId":10,"uNick":"Nick555","uName":"Name555","uPhone":"18810910555","uTel":null,"uIdType":1,"uIdCode":"uCode17555","uAddr":"安徽省鳳陽縣小崗村555戶","uSex":1,"uSign":null,"uSchool":"阜陽市紅旗中學","uAge":19,"uBirth":975340800000}

參考：https://www.cnblogs.com/hello-daocaoren/p/7891907.html