SSM整合redis

大家好，又见面了，我是你们的朋友全栈君。

一、关于SSM整合Redis需要知道的一些小知识

在学习Redis的时候，大家应该知道，JAVA操作redis通常使用的是Jedis，通过java代码来操作redis的数据存储读取等操作，用过的人应该知道，Jedis客户端已经足够简单和轻量级了，但是呢，在此同时，Spring也为Redis提供了支持，就是在Spring-data模块中的Spring-Data-Redis（SDR），它一部分是基于Jedis客户端的API封装，另一部分是对Spring容器的整合。

大家应该都知道，Spring容器可以作为一个大工厂，为各种对象创建实例，关于SSM与Redis的整合，准确点，其实也就是Spring与Redis的整合。

又说会来了，Spring要和Redis整合需要用到的，就是Spring-Data模块中的Spring-data-Redis。

二、SDR资料(Spring-Data-Redis)

资料：http://projects.spring.io/spring-data-redis/
文档：https://docs.spring.io/spring-data/redis/docs/1.8.6.RELEASE/reference/html/
个人觉得没有什么比官方文档说的更为详细的了
这里对其功能做一个简单的说明：
1、连接池自动管理，并且提供了RedisTemplate类（很重要）
2、将jedis的API按照类型操作，进行封装

其中Key Bound Operations ,是对key绑定便携化的接口，什么意思呢，就是，原先我们在存放数据的时候，需要指定一个key，然后根据这个key修改，删除啊之类操作，但是无论是修改还是删除都要重新填写使用这个key，而这个的接口呢，其实也是需要的，只是前期你指定了一个key，在后续的操作中就无需显式的频繁的使用key来尽享操作。

做一个简单的关于String的演示，代码如下：

String boundKey = "key1";
BoundValueOperations<Stirng,String> ops = stringRedisTemplate.boundValueOps(boundKey);//绑定key
ops.set("hellos");//添加数据，相当于redis命令:set key1 hellos,只是在这里不需要显式使用key了
System.out.println(ops.get());获取并且输出数据

3、对事务进行封装最后将由Spring容器进行控制
4、提供了多种序列化和反序列化的策略
（1）StringRedisSerializer：应用与字符串场景，可以是key可以是value
（2）JdkSerializationRedisSerializer：使用JDK本身序列化方式，序列化POJO对象，通常是存储value为对象的时候
（3）JacksonJsonRedisSerializer：这一种方式理解起来很容易，将POJO对象和JSON对象进行互相转换，然后存储这个JSON字符串
（4）OxmSerializer：和上面个有些类似，但是适合XML进行转换，不推荐使用

三、SSM整合Redis

1、导入jar包，或者使用maven，方式自己选，我这提供jar包：
http://pan.baidu.com/s/1miBlAMc

2、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">
    <!--spring 监听器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 防止Spring内存溢出监听器 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>
    <!--mybatis和redis配置-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-redis.xml,classpath:spring-mybaties.xml</param-value>
    </context-param>
    <!--log4j日志-->
    <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>classpath:log4j.properties</param-value>
    </context-param>

    <listener>
        <listener-class>
            org.springframework.web.util.Log4jConfigListener
        </listener-class>
    </listener>

    <!-- 编码过滤器 -->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>*.do</url-pattern>
    </filter-mapping>
    <!--spring mvc-->
    <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-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
</web-app>

3、spring-mvc.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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <context:component-scan base-package="com"></context:component-scan>
    <mvc:annotation-driven></mvc:annotation-driven>
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>text/html;charset=UTF-8</value>
                            <value>application/json;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
            </list>
        </property>
    </bean>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/"></property>
        <property name="suffix" value=".jsp"></property>
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
    </bean>
    <!-- 文件上传 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="102400000"></property>
    </bean>
</beans>

4、spring-mybaties.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:p="http://www.springframework.org/schema/p" xmlns:c="http://www.springframework.org/schema/c" xmlns:util="http://www.springframework.org/schema/util" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" 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.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/springutil.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<!-- 设置自动扫描包 -->
<context:component-scan base-package="com"></context:component-scan>
<!-- 后处理器,只能写一个，所以写在redis配置文件中 -->
<!--<bean id="mapping" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:*.properties" /> </bean>-->
<!--连接池-->
<bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource" destroy-method="close">
<constructor-arg>
<bean class="com.zaxxer.hikari.HikariConfig">
<property name="driverClassName" value="${driverClassName}" />
<property name="jdbcUrl" value="${jdbcUrl}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
<property name="connectionTimeout" value="${connectionTimeout}"/>
<property name="idleTimeout" value="${idleTimeout}"/>
<property name="maxLifetime" value="${maxLifetime}"/>
<property name="maximumPoolSize" value="${maximumPoolSize}"/>
<property name="minimumIdle" value="${minimumIdle}"/>
</bean>
</constructor-arg>
</bean>
<!-- 依赖于mybatis-spring.jar包 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件,这一句很重要 -->
<property name="mapperLocations" value="classpath:com/zxm/mapping/xml/*.xml"></property>
</bean>
<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- DAO接口所在包名，Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.zxm.mapping.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- 定义事务 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="get*" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- AOP定义切面添加事务管理 -->
<aop:config>
<!-- 定义切面 -->
<aop:pointcut expression="execution(public * com.zxm.*.*(..))" id="myPointcut"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="myPointcut"/>
</aop:config>
</beans>

mybatis如果还需要使用Alias的话还需要一个配置文件

mybatis-config.xml：

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>  
<typeAliases>
<!-- <typeAlias type="com.zxm.mybatis.bean.User" alias="User"/> -->
<package name="com.zxm"/>
</typeAliases>
</configuration>

5、spring-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:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:property-placeholder location="classpath:*.properties"/>
<!--设置数据池-->
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="${redis.maxIdle}"></property>
<property name="minIdle" value="${redis.minIdle}"></property>
<property name="maxTotal" value="${redis.maxTotal}"></property>
<property name="maxWaitMillis" value="${redis.maxWaitMillis}"></property>
<property name="testOnBorrow" value="${redis.testOnBorrow}"></property>
</bean>
<!--链接redis-->
<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="hostName" value="${redis.host}"></property>
<property name="port" value="${redis.port}"></property>
<property name="password" value="${redis.password}"></property>
<property name="poolConfig" ref="poolConfig"></property>
</bean>
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate" p:connection-factory-ref="connectionFactory" >
<!--以下针对各种数据进行序列化方式的选择-->
<property name="keySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="valueSerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="hashKeySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<!--<property name="hashValueSerializer"> <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" /> </property>-->
</bean>
</beans>

5、JDBC所需properties文件:
jdbc.properties

driverClassName=com.mysql.jdbc.Driver
username=root
password=root
jdbcUrl=jdbc\:mysql\://localhost\:3306/redis
connectionTimeout=30000
idleTimeout=600000
maxLifetime=1800000
maximumPoolSize=400
minimumIdle=100

6、Redis所需properties文件:
redis.properties

redis.maxIdle=300
redis.minIdle=100
redis.maxWaitMillis=3000
redis.testOnBorrow=true
redis.maxTotal=500
redis.host=127.0.0.1
redis.port=6379
redis.password=zxm

7、日志配置文件
log.properties

# Configure logging for testing: optionally with log file
log4j.rootLogger=WARN, stdout
# log4j.rootLogger=WARN, stdout, logfile
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n
log4j.appender.logfile=org.apache.log4j.FileAppender
log4j.appender.logfile.File=target/spring.log
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

四、合作

1、设置一个Reids的基本操作接口

RedisBaiseTakes.java

package com.zxm.util.redistakes;
import java.util.List;
/** * Created by zxm on 2017/8/11. */
public interface RedisBaiseTakes<H,K,V> {
//增
public void add(K key,String value);
public void addObj(H objectKey,K key,V object);
//删
public void delete(K key);
public void delete(List<K> listKeys);
public void deletObj(H objecyKey,K key);
//改
public void update(K key,String value);
public void updateObj(H objectKey,K key,V object);
//查
public String get(K key);
public V getObj(H objectKey,K key);
}

设定一个访问客户的redis操作类：

SeeUserRedisTakes.java

package com.zxm.util.redistakes;
import com.zxm.bean.SeeUser;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import java.util.List;
import java.util.logging.Logger;
/** * Created by zxm on 2017/8/12. * */
@Component("seeUserRedisTakes")
public class SeeUserRedisTakes implements RedisBaiseTakes<String,String,SeeUser>{
@Resource(name="redisTemplate")
private RedisTemplate redisTemplate;
private Logger logger = Logger.getLogger(String.valueOf(SeeUserRedisTakes.class));
@Override
public void add(String key, String value) {
if(redisTemplate==null){
logger.warning("redisTemplate 实例化失败");
return;
}else{
redisTemplate.opsForValue().set(key,value);
}
}
@Override
public void addObj(String objectKey, String key, SeeUser object) {
if(redisTemplate==null){
logger.warning("redisTemplate 实例化失败");
return;
}else{
redisTemplate.opsForHash().put(objectKey,key,object);
}
}
@Override
public void delete(String key) {
}
@Override
public void delete(List<String> listKeys) {
}
@Override
public void deletObj(String objecyKey, String key) {
}
@Override
public void update(String key, String value) {
}
@Override
public void updateObj(String objectKey, String key, SeeUser object) {
}
@Override
public String get(String key) {
String value = (String) redisTemplate.opsForValue().get(key);
return value;
}
@Override
public SeeUser getObj(String objectKey, String key) {
SeeUser seeUser = (SeeUser) redisTemplate.opsForHash().get(objectKey,key);
return seeUser;
}
}

创建一个用户访问的POJO对象

SeeUser.java

package com.zxm.bean;
import java.io.Serializable;
/** * Created by zxm on 2017/8/11. */
public class SeeUser implements Serializable{ 

private String id;
private String ip;//用户的id
private String seeTime;//用户访问的时间
private int seeCount;//用户访问的次数
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getIp() {
return ip;
}
public void setIp(String ip) {
this.ip = ip;
}
public String getSeeTime() {
return seeTime;
}
public void setSeeTime(String seeTime) {
this.seeTime = seeTime;
}
public int getSeeCount() {
return seeCount;
}
public void setSeeCount(int seeCount) {
this.seeCount = seeCount;
}
}

创建一个Controller对象：

package com.zxm.controller;
import com.zxm.bean.SeeUser;
import com.zxm.util.redistakes.RedisBaiseTakes;
import com.zxm.util.tools.CommTools;
import com.zxm.util.tools.GetUserInfo;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
/** * Created by zxm on 2017/8/7. * */
@Controller
@RequestMapping("test")
public class TestController {
@Resource(name="seeUserRedisTakes")
private RedisBaiseTakes seeUserRedisTakes;
@RequestMapping("/hello.do")
public ModelAndView hello(){
ModelAndView mv = new ModelAndView();
System.out.println("hello see");
seeUserRedisTakes.add("hello1","zxm");
mv.setViewName("hello");
return mv;
}
@RequestMapping("/hello2.do")
public ModelAndView hello2(HttpServletRequest request){
ModelAndView mv = new ModelAndView();
SeeUser seeUser = new SeeUser();
seeUser.setId("1");
seeUser.setIp(GetUserInfo.getIpAddr(request));
seeUser.setSeeTime(CommTools.getNoewTime("yyyy-MM-dd HH:mm:ss"));
seeUser.setSeeCount(1);
seeUserRedisTakes.addObj("seeUser",seeUser.getId(),seeUser);
mv.setViewName("hello");
return mv;
}
@RequestMapping("/hello3.do")
public ModelAndView hello3(HttpServletRequest request){
ModelAndView mv = new ModelAndView();
SeeUser seeUser = (SeeUser) seeUserRedisTakes.getObj("seeUser","1");
if(seeUser!=null){
System.out.println(seeUser.getId()+"======="+seeUser.getIp()+"======"+seeUser.getSeeTime()+"======="+seeUser.getSeeCount());
}
mv.setViewName("hello");
return mv;
}
}

访问结果：
(1)访问链接：
http://localhost:8080/test/hello.do
访问结果：

(2)访问链接：
http://localhost:8080/test/hello2.do
访问结果：

(3)访问链接：
http://localhost:8080/test/hello3.do
访问结果：
输出：

上述代码中没有将mybatis用起来，但是redis和SSM的整合就是redis和Spring的整合，这里演示的是SpringMVC 控制器（Controller）对redis的简单操作和使用，当然也可以其它如server层，原理都一样