Spring 集成jedis

使用的是maven，所以直接上依赖包了

pom文件

Web pom文件

<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><parent><groupId>com.tgb</groupId><artifactId>dui1dui.parent</artifactId><version>0.0.1-SNAPSHOT</version><relativePath>../dui1dui.parent/pom.xml</relativePath></parent><artifactId>dui1dui.user.web</artifactId><packaging>war</packaging><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><!-- 表示开发的时候引入，发布的时候不会加载此包 --></dependency><!-- spring核心包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId></dependency><!-- mybatis核心包 --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId></dependency><!-- mybatis/spring包 --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId></dependency><!-- 导入java ee jar 包 --><dependency><groupId>javax</groupId><artifactId>javaee-api</artifactId><scope>provided</scope></dependency><!-- 导入Mysql数据库链接jar包 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId></dependency><!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 --><dependency><groupId>commons-dbcp</groupId><artifactId>commons-dbcp</artifactId></dependency><!-- JSTL标签类 --><dependency><groupId>jstl</groupId><artifactId>jstl</artifactId></dependency><!-- 日志文件管理包 --><!-- log start --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId></dependency><!-- 格式化对象，方便输出日志 --><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId></dependency><!-- log end --><!-- 映入JSON --><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-asl</artifactId></dependency><!-- 上传组件包 --><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId></dependency><dependency>  <!-- 通用的编码解码算法。包括一些语音编码器，Hex,Base64 --><groupId>commons-codec</groupId><artifactId>commons-codec</artifactId></dependency><!-- redis整合包 --><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-redis</artifactId><version>1.3.6.RELEASE</version></dependency><!-- 客户端依赖 --><dependency><groupId>redis.clients</groupId><artifactId>jedis</artifactId><version>2.5.0</version></dependency></dependencies><build><finalName>${project.artifactId}</finalName></build></project>

Spring 配置

有了依赖包接下来就要进行集成配置了

Spring-context配置

<?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:cache="http://www.springframework.org/schema/cache" 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/cache        http://www.springframework.org/schema/cache/spring-cache-3.1.xsd                        http://www.springframework.org/schema/mvc                          http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"><!-- 自动扫描 --><context:component-scan base-package="dui1dui.merchant.core" /><!-- 启用缓存注解功能，这个是必须的，否则注解不会生效，另外，该注解一定要声明在spring主配置文件中才会生效 --><cache:annotation-driven cache-manager="cacheManager" /><!--读取属性文件 --><bean id="propertyConfigurer"class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"><property name="locations"><list><value>classpath:redis.properties</value><value>classpath:jdbc.properties</value></list></property></bean><!-- redis --><bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig"><property name="maxIdle" value="${redis.maxIdle}" /><property name="maxWaitMillis" value="${redis.maxWait}" /><property name="testOnBorrow" value="${redis.testOnBorrow}" /></bean><!-- redis 连接工厂，可配置多个redis --><bean id="connectionFactory"class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"p:host-name="${redis.host}" p:port="${redis.port}" p:pool-config-ref="poolConfig"p:database="${redis.database}" /><!-- spring 对客户端redis实现 --><bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"><property name="connectionFactory" ref="connectionFactory" /></bean><!--缓存管理实现，使用的是jedis客户端实现类--><bean id="cacheManager" class="org.springframework.data.redis.cache.RedisCacheManager">  <constructor-arg index="0" ref="redisTemplate"/></bean></beans>

 redis.properties文件

 

# Redis settings  # server IPredis.host=localhost# server portredis.port=6379   # use dbIndexredis.database=0redis.maxIdle=300  redis.maxWait=3000  redis.testOnBorrow=true //#指明是否在从池中取出连接前进行检验,如果检验失败,则从池中去除连接并尝试取出另一个

缓存使用

如何使用缓存呢，这里我们根据上篇Spring缓存注解进行使用，同时也要对SPEL表达式有一点的了解

 

Service操作

/** * 商家操作类 */package dui1dui.merchant.core;import java.util.List;import javax.annotation.Resource;import org.springframework.cache.annotation.CacheEvict;import org.springframework.cache.annotation.Cacheable;import org.springframework.stereotype.Service;import dui1dui.merchant.dao.UserInfoMapper;import dui1dui.merchant.entity.User;/** *  * 商家业务操作类 * @author hanyk * @version 1.0.0 , 下午2:28:15 */@Servicepublic class D1dMerchantServiceImpl implements D1dMerchantService {@Resourceprivate UserInfoMapper userinfoMapper;@Override@Cacheable(value="username")public User selectByPrimaryKey(int userId) {System.out.println("qingqiu");returnuserinfoMapper.selectByPrimaryKey(userId);}@Override@Cacheable("selectall")public List<User> selectAll() {List<User> users = this.userinfoMapper.selectAll();System.out.println("查询所有");return users;}//清空username 缓存@CacheEvict(value="username",allEntries=true)public void diselect(){System.out.println("清空username");}//对名称是hanhan 的进行缓存@Cacheable(value="name",condition="#name=='hanhan'")public User selectByName(String name) {User user =userinfoMapper.selectByName(name);System.out.println(user);return user;}}

controller

 

@Controllerpublic classScoreManagerController {     @Autowired    private D1dMerchantServiced1dMerchantService;     JacksonJsonUtil jsonutill = newJacksonJsonUtil();     /**     *     根据主键查询     * @return     * @throws NamingException     */    @RequestMapping("/querylist")    public String querylist2(HttpServletRequestrequest,            HttpServletResponse response,Modelmodel) throws NamingException {                   Useruser = d1dMerchantService.selectByPrimaryKey(3);                   model.addAttribute("user",user);        return "/showInfo";     }   //查询所有内容     @RequestMapping("/selectall")    public String selectall(HttpServletRequestrequest,            HttpServletResponse response)throws NamingException {                   List<User>users = d1dMerchantService.selectAll();                   System.out.println(users);                           return "/showInfo";     }   //清空缓存    @RequestMapping("/diselect")    public String disname() {    d1dMerchantService.diselect();    System.out.println("sdf");;    return"/showInfo";}  //根据用户名称查询用户    @RequestMapping("/getname")    public String getname(){           User user =d1dMerchantService.selectByPrimaryKey(3);           d1dMerchantService.selectByName(user.getUsername());            return"/showInfo";    } }

运行效果

为了确保运行效果，我们现将查询主键的保存的缓存清楚

 

1执行diselect方法

 

2在querylist查询数据

 

打印控制台如下

3再次执行在querylist查询数据

没有调用后台数据库方法

小结：

该jedis与spring集成是通过配置文件以及客户端实现类进行缓存，减少了多余的实现代码，同时也省去了缓存的业务逻辑，基本实现了Aop的效果。