使用springboot自带的redisTemplate操作缓存

1.先在pom中引入maven依赖，重点是spring-boot-starter-data-redis

        
            org.springframework.boot
            spring-boot-starter-data-redis
        

        
            com.fasterxml.jackson.core
            jackson-databind
        
        
            com.fasterxml.jackson.core
            jackson-annotations
        

2.配置redis连接参数

redis:
    host: 127.0.0.1
    port: 6379
    timeout: 10s
    lettuce:
      pool:
        min-idle: 0
        max-idle: 8
        max-active: 8
        max-wait: -1ms

3.配置redisTemplate的相关信息，虽然springboot提供了自动化的配置，但是为了使用我们还是需要自定义一下redisTemplate

定义redisTemplate的配置类RedisTemplateConfig：

package cn.jorian.jorianframework.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Lazy;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.GenericToStringSerializer;

/**
 * redis配置

 * 集群下启动session共享，需打开@EnableRedisHttpSession

 * 单机下不需要
 *
 * @author jorian
 *
 *  2019年3月10日
 */
//@EnableRedisHttpSession
@Configuration
public class RedisTemplateConfig {

	@SuppressWarnings({ "unchecked", "rawtypes" })
	@Bean("redisTemplate")
	public RedisTemplate redisTemplate(@Lazy RedisConnectionFactory connectionFactory) {
		RedisTemplate redis = new RedisTemplate();
		GenericToStringSerializer keySerializer = new GenericToStringSerializer(String.class);
		//key序列化方式
		redis.setKeySerializer(keySerializer);
		//哈希key序列化方式
		redis.setHashKeySerializer(keySerializer);

		GenericJackson2JsonRedisSerializer valueSerializer = new GenericJackson2JsonRedisSerializer();
		//值序列化方式
		redis.setValueSerializer(valueSerializer);
		//哈希值序列化方式
		redis.setHashValueSerializer(valueSerializer);
		//连接器工厂
		redis.setConnectionFactory(connectionFactory);

		return redis;
	}

}

4.至此我们可以愉快的使用redisTemplate操作数据进行缓存，有趣的是，redis提供了专门的操作字符串的类stringRedisTemplate，感兴趣的可以通过下方的测试代码自行了解

 

编写测试类TestRedis,注意，其中的SysUser是我自定义的一个实体类，你可以另行自定义一个类用来测试，需要注意的是，redisTemplate在操作jdk1.8中的LocalDateTime时会出现Json转换错误，具体请看下篇文章：

package cn.jorian.jorianframework.redis;

import cn.jorian.jorianframework.core.system.entity.SysUser;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.List;

/**
 * @Author: jorian
 * @Date: 2019/5/14 14:44
 * @Description:
 */
@SpringBootTest
@RunWith(SpringRunner.class)
public class TestRedis {
    @Autowired
    StringRedisTemplate stringRedisTemplate;

    @Autowired
    RedisTemplate redisTemplate;

    private final Logger log = LoggerFactory.getLogger(this.getClass());

    /**
     * 测试stringRedisTemplate
     */
    @Test
    public void strRedis(){
        stringRedisTemplate.opsForValue().set("name","张三aaa");
        String name = stringRedisTemplate.opsForValue().get("name");

        String tok = stringRedisTemplate.opsForValue().get("J-Token");
        log.info(name);
        log.info(tok);
    }

    /**
     * 测试redisTemplate
     */
    @Test
    public void objRedis(){
        SysUser sysUser1 = new SysUser();
        sysUser1.setId("1001");
        sysUser1.setUsername("jorian");
        sysUser1.setSex(1);

        SysUser sysUser2 = new SysUser();
        sysUser2.setId("1002");
        sysUser2.setUsername("jorian2");
        sysUser2.setSex(0);

        //缓存map形式
        redisTemplate.boundHashOps("testmap").put(sysUser1.getId(),sysUser1);
        //获取map
        List list=redisTemplate.boundHashOps("testmap").values();
        list.forEach(item->System.out.println(item));


        SysUser sysUser3 = new SysUser();
        sysUser3.setId("1003");
        sysUser3.setUsername("jorian3");
        sysUser3.setSex(0);
        //缓存对象
        redisTemplate.opsForValue().set(sysUser3.getId(), sysUser3);
        //获取对象
        System.out.println(redisTemplate.opsForValue().get("1002"));




    }




}

缓存结果：