Spring 集成 Jedis

1.创建maven 项目，引入jedis及spring依赖包

    <dependencies>        <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>1.8.7.RELEASE</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-test</artifactId>            <version>4.3.9.RELEASE</version>        </dependency>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>4.12</version>        </dependency>    </dependencies>

引入资源后，执行maven install 如果可以看到BUILD SUCCESS 表示成功，下面就可以编写代码了

2.配置Redis

创建spring-redis.xml 用于配置redis

<?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:aop="http://www.springframework.org/schema/aop"    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"    xsi:schemaLocation="        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.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         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">    <!-- 读取配置文件信息 -->    <context:property-placeholder ignore-unresolvable="true" location="classpath:redis.properties" />    <!-- 开启注解扫描 -->    <context:annotation-config/>    <!-- 指定要扫描的包 -->    <context:component-scan base-package="com.bigdata"/>    <!-- redis 配置 -->    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">        <property name="maxTotal" value="${redis.maxTotal}" />        <property name="maxIdle" value="${redis.maxIdle}" />        <property name="minIdle" value="${redis.minIdle}"></property>        <property name="maxWaitMillis" value="${redis.maxWaitMillis}" />        <property name="testOnBorrow" value="true" />    </bean>    <!-- redis单节点数据库连接配置 -->    <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">        <property name="hostName" value="${redis.hostName}" />        <property name="port" value="${redis.port}" />        <property name="password" value="${redis.password}" />        <property name="timeout" value="${redis.timeout}" />        <property name="usePool" value="true"/>        <property name="poolConfig" ref="jedisPoolConfig" />    </bean>    <!-- redis 模板配置（对key、value进行序列化） -->    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">        <property name="connectionFactory" ref="jedisConnectionFactory"></property>        <property name="keySerializer">            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"></bean>        </property>        <property name="valueSerializer">            <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"></bean>        </property>    </bean></beans>

redis.properties

###### 连接池 ###### 最大连接数，默认为8，-1表示不限制redis.maxTotal = 20# 最大空闲连接数，默认为8redis.maxIdle = 10# 初始化连接数redis.minIdle = 2# 最大等待时间，单位为毫秒，默认-1，永不超时，如果超时，抛出异常 JedisConnectionExceptionredis.maxWaitMillis = 10000#### 数据库连接 ####redis.hostName = 192.168.242.161redis.port = 6379redis.password = adminredis.timeout = 15000

3.Spring 集成 Jedis 测试

Spring 中 提供了一个类RedisTemplate，类似于我们Hiberante 框架中提供的HibernateTemplate类，它为我们操作Redis作了封装，直接使用即可，RedisTemp 操作 Redis代码如下

package com.bigdata.test;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Set;import javax.annotation.Resource;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.data.redis.core.HashOperations;import org.springframework.data.redis.core.ListOperations;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.data.redis.core.SetOperations;import org.springframework.data.redis.core.ZSetOperations;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;/** * Spring 集成 Jedis 测试类 */@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = "classpath:spring-redis.xml")public class Spring2JedisTest {    @Resource    private RedisTemplate redisTemplate;    // Redis String    @Test    public void testString() throws Exception {        redisTemplate.opsForValue().set("name", "jack");        String name = String.valueOf(redisTemplate.opsForValue().get("name"));        System.out.println("name = " + name);    }    // Redis Hash    @Test    public void testHash() throws Exception {        HashOperations opsForHash = redisTemplate.opsForHash();        Map<String, Object> map = new HashMap<String, Object>();        map.put("name", "jack");        map.put("address", "BeiJing");        opsForHash.putAll("student", map);        Map<String, Object> entries = opsForHash.entries("student");        for(Map.Entry<String, Object> entry : entries.entrySet()) {            System.out.println(entry.getKey() + " = " + entry.getValue());        }    }    // Redis List    @Test    public void testList() throws Exception {        ListOperations opsForList = redisTemplate.opsForList();        opsForList.rightPush("dblist", "mysql");        opsForList.rightPush("dblist", "redis");        opsForList.rightPush("dblist", "oracle");        List list = opsForList.range("dblist", 0, -1);        for (Object obj : list) {            System.out.println(String.valueOf(obj));        }    }    // Redis Set    @Test    public void testSet() throws Exception {        SetOperations opsForSet = redisTemplate.opsForSet();        opsForSet.add("fruits", "peach", "pear", "banana");        Set members = opsForSet.members("fruits");        for (Object obj : members) {            System.out.println(String.valueOf(obj));        }    }    // Redis ZSet    @Test    public void testZSet() throws Exception {        ZSetOperations opsForZSet = redisTemplate.opsForZSet();        opsForZSet.add("scores", "math", 89.0);        opsForZSet.add("scores", "english", 96.0);        opsForZSet.add("scores", "sports", 78.0);        Set scores = opsForZSet.range("scores", 0, -1);        for (Object obj : scores) {            System.out.println(String.valueOf(obj));        }    }}

4.User 对象 CRUD

使用上面的User对象，通过RedisTemplate完成对User对象的CRUD，代码如下

UserDao.java

package com.bigdata.dao;import java.util.List;import java.util.Map;import org.springframework.stereotype.Component;import com.bigdata.entity.User;public interface UserDao {    /** 新增 */    public void save(User user);    /** 更新 */    public void update(User user);    /** 删除 */    public void delete(int id, String... keys);    /** 根据主键查询 */    public User getById(int id);}

UserDaoImpl.java

package com.bigdata.dao.impl;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.annotation.Resource;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.stereotype.Repository;import com.bigdata.dao.UserDao;import com.bigdata.entity.User;@Repositorypublic class UserDaoImpl implements UserDao {    @Resource    private RedisTemplate redisTemplate;    public void save(User user) {        Map<String, Object> userMap = new HashMap<String, Object>();        userMap.put("id", user.getId());        userMap.put("name", user.getName());        userMap.put("address", user.getAddress());        redisTemplate.opsForHash().putAll("user:" + String.valueOf(userMap.get("id")), userMap);    }    // 更新与新增的代码一样，新值会覆盖旧值    public void update(User user) {        Map<String, Object> userMap = new HashMap<String, Object>();        userMap.put("id", user.getId());        userMap.put("name", user.getName());        userMap.put("address", user.getAddress());        redisTemplate.opsForHash().putAll("user:" + String.valueOf(userMap.get("id")), userMap);    }    public void delete(int id, String... keys) {        redisTemplate.opsForHash().delete("user:" + id, keys);    }    public User getById(int id) {        Map userMap = redisTemplate.opsForHash().entries("user:" + id);        return new User(id, String.valueOf(userMap.get("name")), String.valueOf(userMap.get("address")));    }}

测试类：

package com.bigdata.test;import javax.annotation.Resource;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import com.bigdata.dao.UserDao;import com.bigdata.entity.User;@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = "classpath:spring-redis.xml")public class UserTest {    @Resource    private UserDao userDao;    @Test    public void testSave() throws Exception {        userDao.save(new User(1, "tom", "ShangHai"));        userDao.save(new User(2, "jack", "GuangZhou"));        userDao.save(new User(3, "mary", "BeiJing"));    }    @Test    public void testUpdate() throws Exception {        userDao.update(new User(1, "david", "ChengDu"));    }    @Test    public void testDelete() throws Exception {        userDao.delete(1, "address");    }    @Test    public void testGetById() throws Exception {        System.out.println(userDao.getById(1));    }}