ssm集成redis

時間  2019-12-08
標籤 ssm 集成 redis 欄目 Redis 简体版
原文   原文鏈接

身在一個傳統的IT公司，接觸的新技術比較少，打算年後跳槽，因此抽空學了一下redis。html

簡單的redis測試，我們這邊就不講了，如今主要講講ssm集成redis的過程，由於如今項目用的就是ssm的框架。java

好了，廢話不說，上代碼：mysql

Pom.xmlgit

　　

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

	<properties>
		<!-- spring版本號 -->
		<spring.version>4.0.2.RELEASE</spring.version>
		<!-- mybatis版本號 -->
		<mybatis.version>3.2.6</mybatis.version>
		<!-- log4j日誌文件管理包版本 -->
		<slf4j.version>1.7.7</slf4j.version>
		<log4j.version>1.2.17</log4j.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.11</version>
			<!-- 表示開發的時候引入，發佈的時候不會加載此包 -->
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>4.1.9.RELEASE</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.5</version>
		</dependency>
		<!-- spring核心包 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-oxm</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-jdbc</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-aop</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context-support</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<!-- mybatis核心包 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>${mybatis.version}</version>
		</dependency>
		<!-- mybatis/spring包 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.2</version>
		</dependency>
		<!-- 導入java ee jar 包 -->
		<dependency>
			<groupId>javax</groupId>
			<artifactId>javaee-api</artifactId>
			<version>7.0</version>
		</dependency>
		<!-- 導入Mysql數據庫連接jar包 -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.30</version>
		</dependency>
		<!-- 導入dbcp的jar包，用來在applicationContext.xml中配置數據庫 -->
		<dependency>
			<groupId>commons-dbcp</groupId>
			<artifactId>commons-dbcp</artifactId>
			<version>1.2.2</version>
		</dependency>
		<!-- JSTL標籤類 -->
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
		<!-- 日誌文件管理包 -->
		<!-- log start -->
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>${log4j.version}</version>
		</dependency>


		<!-- Redis客戶端jedis依賴 -->
		<dependency>
			<groupId>redis.clients</groupId>
			<artifactId>jedis</artifactId>
			<version>2.7.0</version>
		</dependency>

		<!-- spring-data-redis依賴 -->
		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-redis</artifactId>
			<version>1.5.0.RELEASE</version>
		</dependency>


		<!-- 格式化對象，方便輸出日誌 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.1.41</version>
		</dependency>


		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${slf4j.version}</version>
		</dependency>

		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
		<!-- log end -->
		<!-- 映入JSON -->
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>1.9.13</version>
		</dependency>
		<!-- 上傳組件包 -->
		<dependency>
			<groupId>commons-fileupload</groupId>
			<artifactId>commons-fileupload</artifactId>
			<version>1.3.1</version>
		</dependency>
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>2.4</version>
		</dependency>
		<dependency>
			<groupId>commons-codec</groupId>
			<artifactId>commons-codec</artifactId>
			<version>1.9</version>
		</dependency>


	</dependencies>
	<build>
		<finalName>ssmDemo</finalName>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

 

配置文件：github

spring-mvc.xmlweb

<?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">
	<!-- 自動掃描該包，使SpringMVC認爲包下用了@controller註解的類是控制器 -->
	<context:component-scan base-package="com.ssm" />
	
	<!--避免IE執行AJAX時，返回JSON出現下載文件 -->
	<bean id="mappingJacksonHttpMessageConverter"
		class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
		<property name="supportedMediaTypes">
			<list>
				<value>text/html;charset=UTF-8</value>
			</list>
		</property>
	</bean>
	<!-- 啓動SpringMVC的註解功能，完成請求和註解POJO的映射 -->
	<bean
		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
		<property name="messageConverters">
			<list>
				<ref bean="mappingJacksonHttpMessageConverter" />	<!-- JSON轉換器 -->
			</list>
		</property>
	</bean>
	<!-- 定義跳轉的文件的先後綴 ，視圖模式配置 -->
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<!-- 這裏的配置個人理解是自動給後面action的方法return的字符串加上前綴和後綴，變成一個 可用的url地址 -->
		<property name="prefix" value="/WEB-INF/jsp/" />
		<property name="suffix" value=".jsp" />
	</bean>

	<!-- 配置文件上傳，若是沒有使用文件上傳能夠不用配置，固然若是不配，那麼配置文件中也沒必要引入上傳組件包 -->
	<bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<!-- 默認編碼 -->
		<property name="defaultEncoding" value="utf-8" />
		<!-- 文件大小最大值 -->
		<property name="maxUploadSize" value="10485760000" />
		<!-- 內存中的最大值 -->
		<property name="maxInMemorySize" value="40960" />
	</bean>

</beans>

 

mybatis-config.xmlredis

<?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>

	<settings>
		<!-- 這個配置使全局的映射器啓用或禁用緩存 -->
		<setting name="cacheEnabled" value="true" />
		<!-- 對於未知的SQL查詢，容許返回不一樣的結果集以達到通用的效果 -->
		<setting name="multipleResultSetsEnabled" value="true" />
		<!-- 配置默認的執行器。SIMPLE 執行器沒有什麼特別之處。REUSE 執行器重用預處理語句。BATCH 執行器重用語句和批量更新 -->
		<setting name="defaultExecutorType" value="REUSE" />
		<!-- 全局啓用或禁用延遲加載。當禁用時，全部關聯對象都會即時加載。 -->
		<setting name="lazyLoadingEnabled" value="false" />
		<setting name="aggressiveLazyLoading" value="true" />
		<!-- 設置超時時間，它決定驅動等待一個數據庫響應的時間。 -->
		<setting name="defaultStatementTimeout" value="25000" />
	</settings>
	<mappers>
		<mapper resource="com/ssm/mapping/UserMapper.xml" />
	</mappers>
</configuration>

　　

spring-mybatis.xmlspring

<?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: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-3.0.xsd
           http://www.springframework.org/schema/context  
           http://www.springframework.org/schema/context/spring-context-3.0.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

	<!-- 引入配置文件 -->
	<bean id="propertyConfigurer"
		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="location" value="classpath:jdbc.properties" />
	</bean>

	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
		<property name="driverClassName" value="${driver}" />
		<property name="url" value="${url}" />
		<property name="username" value="${username}" />
		<property name="password" value="${password}" />
		<!-- 初始化鏈接大小 -->
		<property name="initialSize" value="${initialSize}"></property>
		<!-- 鏈接池最大數量 -->
		<property name="maxActive" value="${maxActive}"></property>
		<!-- 鏈接池最大空閒 -->
		<property name="maxIdle" value="${maxIdle}"></property>
		<!-- 鏈接池最小空閒 -->
		<property name="minIdle" value="${minIdle}"></property>
		<!-- 獲取鏈接最大等待時間 -->
		<property name="maxWait" value="${maxWait}"></property>
	</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="configLocation" value="classpath:mybatis-config.xml"></property>
	</bean>

	<!-- DAO接口所在包名，Spring會自動查找其下的類 -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.ssm.dao" />
		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
	</bean>

	<!-- (事務管理)transaction manager, use JtaTransactionManager for global tx -->
	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>

</beans>

　

applicationContext.xmlsql

<?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: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-3.0.xsd
           http://www.springframework.org/schema/context  
           http://www.springframework.org/schema/context/spring-context-3.0.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

	<!--其實component-scan 就有了annotation-config的功能即把須要的類註冊到了spring容器中 -->
	<context:component-scan base-package="com。ssm.service" />
	<!--配置事務註解 -->
	<tx:annotation-driven transaction-manager="transactionManager" />

	<!-- redis配置 -->
	<!-- redis鏈接池 -->
	<bean id="jedisConfig" class="redis.clients.jedis.JedisPoolConfig">
		<property name="maxTotal" value="300"></property>
		<property name="maxIdle" value="200"></property>
		<property name="MaxWaitMillis" value="10000"></property>
		<property name="testOnBorrow" value="true"></property>
		<property name="testOnReturn" value="true"></property>
	</bean>
	<!-- redis鏈接工廠 -->
	<bean id="connectionFactory"
		class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
		<property name="hostName" value="127.0.0.1"></property>
		<property name="port" value="6379"></property>
		<property name="poolConfig" ref="jedisConfig"></property>
	</bean>

	<!-- redis操做模板，這裏採用儘可能面向對象的模板 -->
	<bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
		<property name="connectionFactory" ref="connectionFactory" />

		<property name="keySerializer">
			<bean
				class="org.springframework.data.redis.serializer.StringRedisSerializer" />
		</property>
		<property name="valueSerializer">
			<bean
				class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
		</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>

　　

jdbc.properties數據庫

driver=com.mysql.jdbc.Driver
url=jdbc\:mysql\://localhost\:3306/production_ssm
username=root
password=123456
#\u5B9A\u4E49\u521D\u59CB\u8FDE\u63A5\u6570  
initialSize=0  
#\u5B9A\u4E49\u6700\u5927\u8FDE\u63A5\u6570  
maxActive=20  
#\u5B9A\u4E49\u6700\u5927\u7A7A\u95F2  
maxIdle=20  
#\u5B9A\u4E49\u6700\u5C0F\u7A7A\u95F2  
minIdle=1  
#\u5B9A\u4E49\u6700\u957F\u7B49\u5F85\u65F6\u95F4  
maxWait=60000

　　

log4j.properties

log4j.rootLogger=DEBUG, stdout    
        
log4j.appender.stdout=org.apache.log4j.ConsoleAppender    
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout    
log4j.appender.stdout.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n    
    
#log4j.appender.R=org.apache.log4j.DailyRollingFileAppender    
#log4j.appender.R.File=../logs/service.log    
#log4j.appender.R.layout=org.apache.log4j.PatternLayout    
#log4j.appender.R.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n    
    
log4j.logger.com.ibatis = debug    
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource = debug    
log4j.logger.com.ibatis.common.jdbc.ScriptRunner = debug    
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate = debug    
log4j.logger.java.sql.Connection = debug    
log4j.logger.java.sql.Statement = debug    
log4j.logger.java.sql.PreparedStatement = debug    
log4j.logger.java.sql.ResultSet =debug

　　

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
	version="3.0">
	<display-name>Archetype Created Web Application</display-name>

	<!-- Spring和mybatis的配置文件 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:spring-mybatis.xml,classpath:applicationContext.xml</param-value>
	</context-param>
	<!-- 編碼過濾器 -->
	<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>/*</url-pattern>
	</filter-mapping>

	<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>

	<!-- Spring監聽器 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<!-- 防止Spring內存溢出監聽器 -->
	<listener>
		<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
	</listener>

	<!-- 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-mvc.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>
		<!-- 此處能夠能夠配置成*.do，對應struts的後綴習慣 -->
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	<welcome-file-list>
		<welcome-file>/index.jsp</welcome-file>
	</welcome-file-list>

</web-app>

　　

以上是一些相關的配置項，接下來是真正的java代碼：

UserController.java

package com.ssm.controller;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.ssm.pojo.User;
import com.ssm.service.UserService;

@Controller
@RequestMapping("/user")
public class UserController {

	@Autowired
	private UserService userService;

	@RequestMapping("/showUser")
	public String toIndex(HttpServletRequest request, Model model) {
		int userId = Integer.parseInt(request.getParameter("id"));
		User user = this.userService.selectByPrimaryKey(userId);
		model.addAttribute("user", user);
		return "showUser";
	}
}

　　

UserService.java

package com.ssm.service;

import com.ssm.pojo.User;

public interface UserService {
	User selectByPrimaryKey(Integer id);
}

　　

UserServiceImpl.java

package com.ssm.service.impl;

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

import com.ssm.dao.UserMapper;
import com.ssm.pojo.User;
import com.ssm.service.UserService;

@Service("userServiceImpl")
public class UserServiceImpl implements UserService {

	@Autowired
	private UserMapper userMapper;

	public User selectByPrimaryKey(Integer id) {

		return userMapper.selectByPrimaryKey(id);
	}

}

 

UserMapper.java

package com.ssm.dao;

import com.ssm.pojo.User;

public interface UserMapper {
	User selectByPrimaryKey(Integer id);
}

　　

UserExample.java是經過mybaitis的插件自動生成的，就不寫了，後面提供源碼。

 

User.java

package com.ssm.pojo;

import java.io.Serializable;

/**
 * user 類
 * 
 * @author fhliuzhihu
 *
 */
public class User implements Serializable {

	/**
	 * 使用jedis 須要序列化接口
	 */
	private static final long serialVersionUID = 1L;

	private Integer id;

	private String userName;

	private String password;

	private Integer age;

	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 Integer getAge() {
		return age;
	}

	public void setAge(Integer age) {
		this.age = age;
	}

	@Override
	public String toString() {
		return "User [id=" + id + ", username=" + userName + ", password=" + password + ",age=" + age + "]";
	}
}

　　

RedisCache.java

package com.ssm.redis;

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

import org.apache.ibatis.cache.Cache;
import org.springframework.beans.factory.annotation.Autowired;

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

public class RedisCache implements Cache {

	private final ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
	/**
	 * Jedis客戶端
	 */

	@Autowired
	private Jedis redisClient = createClient();

	private String id;

	public RedisCache(final String id) {
		if (id == null) {
			throw new IllegalArgumentException("必須傳入ID");
		}
		System.out.println("MybatisRedisCache:id=" + id);
		this.id = id;
	}

	@Override
	public void clear() {
		redisClient.flushDB();
	}

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

	@Override
	public Object getObject(Object key) {
		byte[] ob = redisClient.get(SerializeUtil.serialize(key.toString()));
		if (ob == null) {
			return null;
		}
		Object value = SerializeUtil.unSerialize(ob);
		return value;
	}

	@Override
	public ReadWriteLock getReadWriteLock() {
		return readWriteLock;
	}

	@Override
	public int getSize() {
		return Integer.valueOf(redisClient.dbSize().toString());
	}

	@Override
	public void putObject(Object key, Object value) {
		redisClient.set(SerializeUtil.serialize(key.toString()), SerializeUtil.serialize(value));
	}

	@Override
	public Object removeObject(Object key) {
		return redisClient.expire(SerializeUtil.serialize(key.toString()), 0);
	}

	protected static Jedis createClient() {

		try {
			@SuppressWarnings("resource")
			JedisPool pool = new JedisPool(new JedisPoolConfig(), "127.0.0.1", 6379);
			return pool.getResource();
		} catch (Exception e) {
			e.printStackTrace();
		}
		throw new RuntimeException("初始化鏈接池錯誤");
	}

}

　　

SerializeUtil.java

package com.ssm.redis;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class SerializeUtil {
	/**
	 * 
	 * 序列化
	 */
	public static byte[] serialize(Object obj) {

		ObjectOutputStream oos = null;
		ByteArrayOutputStream baos = null;

		try {
			// 序列化
			baos = new ByteArrayOutputStream();
			oos = new ObjectOutputStream(baos);

			oos.writeObject(obj);
			byte[] byteArray = baos.toByteArray();
			return byteArray;

		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}

	/**
	 * 
	 * 反序列化
	 * 
	 * @param bytes
	 * @return
	 */
	public static Object unSerialize(byte[] bytes) {

		ByteArrayInputStream bais = null;

		try {
			// 反序列化爲對象
			bais = new ByteArrayInputStream(bytes);
			ObjectInputStream ois = new ObjectInputStream(bais);
			return ois.readObject();

		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}
}

　　

最後，UserMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.ssm.dao.UserMapper">
	<cache type="com.ssm.redis.RedisCache" />
	<resultMap id="BaseResultMap" type="com.ssm.pojo.User">
		<id column="id" jdbcType="INTEGER" property="id" />
		<result column="user_name" jdbcType="VARCHAR" property="userName" />
		<result column="password" jdbcType="VARCHAR" property="password" />
		<result column="age" jdbcType="INTEGER" property="age" />
	</resultMap>
	<sql id="Example_Where_Clause">
		<where>
			<foreach collection="oredCriteria" item="criteria" separator="or">
				<if test="criteria.valid">
					<trim prefix="(" prefixOverrides="and" suffix=")">
						<foreach collection="criteria.criteria" item="criterion">
							<choose>
								<when test="criterion.noValue">
									and ${criterion.condition}
								</when>
								<when test="criterion.singleValue">
									and ${criterion.condition} #{criterion.value}
								</when>
								<when test="criterion.betweenValue">
									and ${criterion.condition} #{criterion.value}
									and
									#{criterion.secondValue}
								</when>
								<when test="criterion.listValue">
									and ${criterion.condition}
									<foreach close=")" collection="criterion.value" item="listItem"
										open="(" separator=",">
										#{listItem}
									</foreach>
								</when>
							</choose>
						</foreach>
					</trim>
				</if>
			</foreach>
		</where>
	</sql>
	<sql id="Update_By_Example_Where_Clause">
		<where>
			<foreach collection="example.oredCriteria" item="criteria"
				separator="or">
				<if test="criteria.valid">
					<trim prefix="(" prefixOverrides="and" suffix=")">
						<foreach collection="criteria.criteria" item="criterion">
							<choose>
								<when test="criterion.noValue">
									and ${criterion.condition}
								</when>
								<when test="criterion.singleValue">
									and ${criterion.condition} #{criterion.value}
								</when>
								<when test="criterion.betweenValue">
									and ${criterion.condition} #{criterion.value}
									and
									#{criterion.secondValue}
								</when>
								<when test="criterion.listValue">
									and ${criterion.condition}
									<foreach close=")" collection="criterion.value" item="listItem"
										open="(" separator=",">
										#{listItem}
									</foreach>
								</when>
							</choose>
						</foreach>
					</trim>
				</if>
			</foreach>
		</where>
	</sql>
	<sql id="Base_Column_List">
		id, user_name, password, age
	</sql>
	<select id="selectByExample" parameterType="com.ssm.dao.UserExample"
		resultMap="BaseResultMap">
		select
		<if test="distinct">
			distinct
		</if>
		<include refid="Base_Column_List" />
		from user_t
		<if test="_parameter != null">
			<include refid="Example_Where_Clause" />
		</if>
		<if test="orderByClause != null">
			order by ${orderByClause}
		</if>
	</select>
	<select id="selectByPrimaryKey" parameterType="java.lang.Integer"
		resultMap="BaseResultMap">
		select
		<include refid="Base_Column_List" />
		from user_t
		where id = #{id,jdbcType=INTEGER}
	</select>
	<delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
		delete from user_t
		where id = #{id,jdbcType=INTEGER}
	</delete>
	<delete id="deleteByExample" parameterType="com.ssm.dao.UserExample">
		delete from user_t
		<if test="_parameter != null">
			<include refid="Example_Where_Clause" />
		</if>
	</delete>
	<insert id="insert" parameterType="com.ssm.pojo.User">
		insert into user_t (id,
		user_name, password,
		age)
		values (#{id,jdbcType=INTEGER},
		#{userName,jdbcType=VARCHAR},
		#{password,jdbcType=VARCHAR},
		#{age,jdbcType=INTEGER})
	</insert>
	<insert id="insertSelective" parameterType="com.ssm.pojo.User">
		insert into user_t
		<trim prefix="(" suffix=")" suffixOverrides=",">
			<if test="id != null">
				id,
			</if>
			<if test="userName != null">
				user_name,
			</if>
			<if test="password != null">
				password,
			</if>
			<if test="age != null">
				age,
			</if>
		</trim>
		<trim prefix="values (" suffix=")" suffixOverrides=",">
			<if test="id != null">
				#{id,jdbcType=INTEGER},
			</if>
			<if test="userName != null">
				#{userName,jdbcType=VARCHAR},
			</if>
			<if test="password != null">
				#{password,jdbcType=VARCHAR},
			</if>
			<if test="age != null">
				#{age,jdbcType=INTEGER},
			</if>
		</trim>
	</insert>
	<select id="countByExample" parameterType="com.ssm.dao.UserExample"
		resultType="java.lang.Integer">
		select count(*) from user_t
		<if test="_parameter != null">
			<include refid="Example_Where_Clause" />
		</if>
	</select>
	<update id="updateByExampleSelective" parameterType="map">
		update user_t
		<set>
			<if test="record.id != null">
				id = #{record.id,jdbcType=INTEGER},
			</if>
			<if test="record.userName != null">
				user_name = #{record.userName,jdbcType=VARCHAR},
			</if>
			<if test="record.password != null">
				password = #{record.password,jdbcType=VARCHAR},
			</if>
			<if test="record.age != null">
				age = #{record.age,jdbcType=INTEGER},
			</if>
		</set>
		<if test="_parameter != null">
			<include refid="Update_By_Example_Where_Clause" />
		</if>
	</update>
	<update id="updateByExample" parameterType="map">
		update user_t
		set id = #{record.id,jdbcType=INTEGER},
		user_name =
		#{record.userName,jdbcType=VARCHAR},
		password =
		#{record.password,jdbcType=VARCHAR},
		age =
		#{record.age,jdbcType=INTEGER}
		<if test="_parameter != null">
			<include refid="Update_By_Example_Where_Clause" />
		</if>
	</update>
	<update id="updateByPrimaryKeySelective" parameterType="com.ssm.pojo.User">
		update user_t
		<set>
			<if test="userName != null">
				user_name = #{userName,jdbcType=VARCHAR},
			</if>
			<if test="password != null">
				password = #{password,jdbcType=VARCHAR},
			</if>
			<if test="age != null">
				age = #{age,jdbcType=INTEGER},
			</if>
		</set>
		where id = #{id,jdbcType=INTEGER}
	</update>
	<update id="updateByPrimaryKey" parameterType="com.ssm.pojo.User">
		update user_t
		set
		user_name = #{userName,jdbcType=VARCHAR},
		password =
		#{password,jdbcType=VARCHAR},
		age = #{age,jdbcType=INTEGER}
		where id =
		#{id,jdbcType=INTEGER}
	</update>
</mapper>

　　

其中，UserMapper.xml中，最重要的就是

<cache type="com.ssm.redis.RedisCache" />

 

這個是須要緩存哪一個實體類，那麼就在哪一個的mapper.xml中添加上這一句！

測試：

啓動本地的redis，而後啓動項目，瀏覽器中輸入：http://localhost:8080/ssmDemo/user/showUser?id=1    

後臺日誌：

 第一次，直接查詢數據庫數據。

　　

　

經過RedisDesktopManager查詢本地redis，發現數據已經存在了redis中：

 

 再次刷新頁面，查看後臺日誌：

 

 

ok，ssm集成redis的步驟就是這些了，不過怎麼說呢，仍是有點兒問題，就是RedisCache得到Jedis的過程，我以爲應該是須要直接經過@Autowired獲取，可是我這個就是經過createClient();這個方法獲取的，因此有問題，回頭看看怎麼更改吧！

 

 

好吧，代碼寫的很渣，可是仍是放上去，供你們參考一下，一塊兒學習吧！

加油！

 

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