一、SpringDataRedis简介
Spring-data-redis是spring大家族的一部分，提供了在srping应用中通过简单的配置访问redis服务，对reids底层开发包(Jedis, JRedis, and RJC)进行了高度封装，RedisTemplate提供了redis各种操作、异常处理及序列化，支持发布订阅，并对spring 3.1 cache进行了实现。
spring-data-redis针对jedis提供了如下功能：
- 连接池自动管理，提供了一个高度封装的“RedisTemplate”类
- 针对jedis客户端中大量api进行了归类封装,将同一类型操作封装为operation接口
ValueOperations：简单K-V操作 SetOperations：set类型数据操作 ZSetOperations：zset类型数据操作 HashOperations：针对map类型的数据操作 ListOperations：针对list类型的数据操作
二、SpringDataRedis入门案例
2.1 准备工作
（1）构建Maven工程——SpringDataRedisDemo
（2）引入Spring相关依赖、引入JUnit依赖
（3）引入Jedis和SpringDataRedis依赖
<?xml version="1.0" encoding="UTF-8"?> <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> <groupId>com.pinyougou</groupId> <artifactId>SpringDataRedisDemo</artifactId> <version>1.0-SNAPSHOT</version> <!-- 集中定义依赖版本号 --> <properties> <spring.version>4.2.4.RELEASE</spring.version> </properties> <dependencies> <!-- Spring --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jms</artifactId> <version>${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> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.9</version> </dependency> <!-- 缓存 --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.8.1</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-redis</artifactId> <version>1.7.2.RELEASE</version> </dependency> </dependencies> </project>
（4）在src/main/resources下创建properties文件夹，建立redis-config.properties
redis.host=127.0.0.1
redis.port=6379
redis.pass=
redis.database=0
redis.maxIdle=300
redis.maxWait=3000
redis.testOnBorrow=true
（5）在src/main/resources下创建spring文件夹 ，创建applicationContext-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:context="http://www.springframework.org/schema/context" 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"> <context:property-placeholder location="classpath*:properties/redis-config.properties"/> <!--redis相关配置--> <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxIdle" value="${redis.maxIdle}"/> <property name="maxWaitMillis" value="${redis.maxWait}"/> <!--suppress SpringXmlModelInspection --> <property name="testOnBorrow" value="${redis.testOnBorrow}" /> </bean> <bean id="JedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" p:host-name="${redis.host}" p:port="${redis.port}" p:password="${redis.pass}" p:pool-config-ref="poolConfig"/> <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"> <property name="connectionFactory" ref="JedisConnectionFactory" /> </bean> </beans>
maxIdle ：最大空闲数
maxWaitMillis:连接时的最大等待毫秒数
testOnBorrow：在提取一个jedis实例时，是否提前进行验证操作；如果为true，则得到的jedis实例均是可用的；
2.2 值类型操作
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = "classpath:spring/applicationContext-redis.xml") public class TestValue { @Autowired private RedisTemplate redisTemplate; @Test public void setValue() { redisTemplate.boundValueOps("name").set("zhangsan"); } @Test public void getValue() { String str = (String) redisTemplate.boundValueOps("name").get(); System.out.println(str); } @Test public void deleteValue() { redisTemplate.delete("name"); } }
2.3 set类型操作
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = "classpath:spring/applicationContext-redis.xml") public class TestSet { @Autowired private RedisTemplate redisTemplate; /** * 存入值 */ @Test public void setValue() { redisTemplate.boundSetOps("nameset").add("曹操"); redisTemplate.boundSetOps("nameset").add("刘备"); redisTemplate.boundSetOps("nameset").add("孙权"); } /** * 提取值 */ @Test public void getValue() { Set members = redisTemplate.boundSetOps(("nameset")).members(); System.out.println(members);//[孙权, 刘备, 曹操] } /** * 删除集合中的某一个值 */ @Test public void deleteValue() { redisTemplate.boundSetOps("nameset").remove("孙权"); } /** * 删除整个集合 */ @Test public void deleteAllValue() { redisTemplate.delete("nameset"); } }
2.4 List类型操作
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = "classpath:spring/applicationContext-redis.xml") public class TestList { @Autowired private RedisTemplate redisTemplate; /** * 右压栈：后添加的对象排在后边 */ @Test public void testSetValue1() { redisTemplate.boundListOps("nameList1").rightPush("刘备"); redisTemplate.boundListOps("nameList1").rightPush("关羽"); redisTemplate.boundListOps("nameList1").rightPush("张飞"); } /** * 显示右压栈集合 */ @Test public void testGetValue1() { List list = redisTemplate.boundListOps("nameList1").range(0, 10); System.out.println(list);//[刘备, 关羽, 张飞] } /** * 左压栈：后添加的对象排在前边 */ @Test public void testSetValue2() { redisTemplate.boundListOps("nameList2").leftPush("刘备"); redisTemplate.boundListOps("nameList2").leftPush("关羽"); redisTemplate.boundListOps("nameList2").leftPush("张飞"); } /** * 显示左压栈集合 */ @Test public void testGetValue2() { List list = redisTemplate.boundListOps("nameList2").range(0, 10); System.out.println(list);//[张飞, 关羽, 刘备] } /** * 查询集合某个元素 */ @Test public void testSearchByIndex() { String str = (String) redisTemplate.boundListOps("nameList1").index(1); System.out.println(str);//关羽 } /** * 移除集合某个元素 */ @Test public void testRemoveByIndex() { //1代表移除的个数 redisTemplate.boundListOps("nameList1").remove(1, "关羽"); } }
2.5 Hash类型操作
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = "classpath:spring/applicationContext-redis.xml") public class TestHash { @Autowired private RedisTemplate redisTemplate; /** * 存入值 */ @Test public void testSetValue() { redisTemplate.boundHashOps("namehash").put("a", "唐僧"); redisTemplate.boundHashOps("namehash").put("b", "悟空"); redisTemplate.boundHashOps("namehash").put("c", "八戒"); redisTemplate.boundHashOps("namehash").put("d", "沙僧"); } /** * 提取所有的KEY */ @Test public void testGetKeys() { Set keys = redisTemplate.boundHashOps("namehash").keys(); System.out.println(keys);//[a, b, c, d] } /** * 提取所有的值 */ @Test public void testGetValues() { List values = redisTemplate.boundHashOps("namehash").values(); System.out.println(values);//[唐僧, 悟空, 八戒, 沙僧] } /** * 根据KEY提取值 */ @Test public void testGetValueByKey() { Object o = redisTemplate.boundHashOps("namehash").get("b"); System.out.println(o);//悟空 } /** * 根据KEY移除值 */ @Test public void testRemoveValueByKey() { redisTemplate.boundHashOps("namehash").delete("c"); } }