java使用redis

1、pom.xml文件里面增加如下依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

2、yml文件增加如下配置：

  redis:
    host: localhost
    port: 6379
    password: heming
    database: 10

配置结构如下图所示：?

3、新增RedisConfiguration.java类

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
@Slf4j
public class RedisConfiguration {

    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory){
        log.info("开始创建redis模板对象...");
        RedisTemplate redisTemplate = new RedisTemplate();
        //设置redis的连接工厂对象
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        //设置redis key的序列化器
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        return redisTemplate;
    }
}

?4、新增RedisTestController.java类

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.concurrent.TimeUnit;

@RestController
@Slf4j
public class RedisTestController {

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * redis test
     * @return
     */
    @GetMapping(value = "/redisTest")
    public void getGirlList(){
        log.info("bbbbb");
        redisTemplate.opsForValue().set("name","小明"); // 设置k v
        String city = (String) redisTemplate.opsForValue().get("name"); // 拿到key为name的值
        System.out.println(city);
        redisTemplate.opsForValue().set("code","1234",1, TimeUnit.MINUTES); // 设置过期时间为三分钟
        redisTemplate.opsForValue().setIfAbsent("lock","1"); // 设置lock为k的唯一值
        redisTemplate.opsForValue().setIfAbsent("lock","2");
    }
}

4、验证

浏览器直接访问GET接口

http://localhost:8081/redisTest

然后查看数据

发现有乱码，怎么处理？?