Spring整合Redis

首页导入相关依赖

    <!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
	<dependency>
	    <groupId>redis.clients</groupId>
	    <artifactId>jedis</artifactId>
	    <version>2.4.2</version>
	</dependency>
			
	<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-redis -->
	<dependency>
	    <groupId>org.springframework.data</groupId>
	    <artifactId>spring-data-redis</artifactId>
	    <version>1.4.2.RELEASE</version>
	</dependency>

在spring.xml配置文件添加bean节点

<!-- 配置jedis连接池的配置的初始化属性 -->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
    <!-- 配置最大连接数 -->
    <property name="maxTotal" value="10"></property>
    <!-- 配置初始连接数量 -->
    <property name="maxIdle" value="2"></property>
</bean> 
       
<!-- 配置Jedis(Redis)连接工厂 -->
<bean id="jedisConnectionFactory"    class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
    <!-- 配置Redis主机名 -->
    <property name="hostName" value="192.168.184.129"></property>
    <!-- 配置Redis端口 -->
    <property name="port" value="6379"></property>
    <!-- 配置Redis密码 -->
    <property name="password" value="lixing"></property>
    <property name="poolConfig" ref="jedisPoolConfig"></property>
</bean>
       
<!-- 配置Redis模板 -->
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
    <property name="connectionFactory" ref="jedisConnectionFactory"></property>
</bean>

在业务层中使用：

@Service
public class EmpServiceImpl implements EmpService {

	@Autowired
	RedisTemplate<String, String> redis;
	
	public String getValue(String key) {
		
		ValueOperations<String, String> value =  redis.opsForValue();
		
		if(redis.hasKey(key)) {
			System.out.println("从redis中取出：");
			return value.get(key);
		}else {
			//模拟假设从MySQL中取出的数据
			String str = "redisTemplate";
			System.out.println("从MySQL中取出：");
			value.set(key, str);
			return str;
		}
	}

}

测试：

public class EmpTests {

	@Autowired
	RedisTemplate<String, String> redis;	
	
	@Test
	public void test1() {
		ClassPathXmlApplicationContext cpxac = new ClassPathXmlApplicationContext("spring.xml");
		
		EmpService empservice = cpxac.getBean(EmpService.class);
		
		String str = empservice.getValue("test3");
		
		System.out.println(str);
	}
}

 

通过RedisTemplate把数据保存到Redis时，所有的字符前都加了一串字符：

原因是，RedisTemplate默认会使用JdkSerializationRedisSerializer对数据进行序列化：

 

解决方法：在RedisTemplate 节点中为keySerializer和valueSerializer属性注入StringRedisSerializer类

<!-- 配置Redis模板 -->
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
    <property name="connectionFactory" ref="jedisConnectionFactory"></property>
    <!-- key序列化默认JDK改为String -->
    <property name="keySerializer">
        <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"></bean>
    </property>
    <!-- value序列化默认JDK改为String -->
    <property name="valueSerializer">
        <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"></bean>
    </property>
</bean>