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Jedis存储一个-以String的形式的对象到Redis

article 2024/11/25 23:37:01

1.1 准备一个User实体类

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;
import java.util.Date;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User implements Serializable {
    private Integer id;
    private String name;
    private Date birthday;
}

1.2 导入Maven依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
    <exclusions>
        <exclusion>
            <groupId>io.lettuce</groupId>
            <artifactId>lettuce-core</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<!--  切换 jedis 作为操作redis的底层客户端-->
<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
</dependency>
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <optional>true</optional>
</dependency>
<!-- 导入fastJSON -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.47</version>
</dependency>

1.3 创建TestSetString测试类，编写内容

import com.alibaba.fastjson.JSON;
import redis.clients.jedis.Jedis;

import java.util.Date;

public class TestSetString {
    // Redis服务器信息
    private static final String REDIS_HOST = "192.168.200.141";
    private static final int REDIS_PORT = 6379;
    private static final String REDIS_PASSWORD = "sl183691";

    public static void main(String[] args) {
        //1. 连接Redis
        Jedis jedis = new Jedis(REDIS_HOST, REDIS_PORT);
        jedis.auth(REDIS_PASSWORD);

        //2.1 准备key(String)-value(User)
        String stringKey = "stringUser";
        User value = new User(2, "李四", new Date());
        //2.2 使用fastJSON将value转化为json字符串
        String stringValue = JSON.toJSONString(value);
        //2.3 将key和value存储到Redis中
        jedis.set(stringKey, stringValue);
        System.out.println("===================================================");

        //3. 获取操作结果
        //3.1 jedis去Redis中获取value
        String value2 = jedis.get(stringKey);
        //3.2 将value反序列化为User对象
        User user = JSON.parseObject(value2, User.class);
        //3.3 输出
        System.out.println("user:" + user);

        //4. 释放资源
        jedis.close();
    }
}