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Jedis存储一个以byte[]的形式的对象到Redis

article 2024/11/25 8:23:07

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>

1.3 创建TestSetByteArray测试类，编写内容

import org.springframework.util.SerializationUtils;
import redis.clients.jedis.Jedis;

import java.util.Date;

public class TestSetByteArray {
    // 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 key = "user";
        User value = new User(1, "张三", new Date());
        //2.2 将key和value转换为byte[]
        byte[] byteKey = SerializationUtils.serialize(key);
        byte[] byteValue = SerializationUtils.serialize(value);
        //2.3 将key和value存储到Redis
        jedis.set(byteKey, byteValue);
        System.out.println("===================================================");

        //3. 获取操作结果
        //3.1 jedis去Redis中获取value
        byte[] value2 = jedis.get(byteKey);
        //3.2 将value反序列化为User对象
        User user = (User) SerializationUtils.deserialize(value2);
        //3.3 输出
        System.out.println("user:" + user);

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