redis笔记2(千峰教育)

四 redis连接数据库

     1.下载依赖jedis

       2.连接数据库, 和redis一样的操作命令, 关闭资源

//        连接Redis
        Jedis jedis = new Jedis("192.168.43.30", 6379);
//        操作Redis, jedis的操作命令和redis完全一样
        jedis.set("name","coco");
        String name = jedis.get("name");
        System.out.println(name);
//        释放资源
        jedis.close();

       3. 存对象.(对象要求k,v都必须是byte[])

           1.定义的对象必须实现Serializable 

@Data
@AllArgsConstructor
public class User implements Serializable {

    private int id;
    private String name;
    private Date brithday;

}

             2.将k,v都转成byte[]

添加依赖, 可以利用SerializationUtils

 <dependency>

            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.2.12.RELEASE</version>
        </dependency>

        String key = "user";
        User value = new User(1,"tony",new Date());
//          2,将key value转成byte[]
        byte[] key_b = key.getBytes();
       byte[] value_b = SerializationUtils.serialize(value);

//        3.存储
        String set = jedis.set(key_b, value_b);
//        System.out.println(set);
//         4.获取
        byte[] bytes = jedis.get(key_b);
        User user = (User)SerializationUtils.deserialize(bytes);
        System.out.println(user);

    

 

标签：value,name,redis,笔记,jedis,User,key,byte,千峰
来源： https://www.cnblogs.com/dangdanghepingping/p/14285779.html