Use redis en java (incluido el tipo json y el reemplazo del tipo java)
- dependencia de pom
<!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>3.0.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.56</version>
</dependency>
- Herramientas, utilizadas para conectarse a redis
public class JedisConnect {
public static Jedis Conn(){
Jedis jedis=new Jedis("120.27.244.176");
return jedis;
}
}
- Almacene un redis, simule compartir sesión aquí
//连接
Jedis jedis=JedisConnect.Conn();
//对象转json字符串
String json_user=JSONObject.toJSONString(user);
/*
集合转换成json集合
String JList=JSONArray.toJSONString(list);
*/
//放入redis
jedis.set("user",json_user);
//设置存活时间
jedis.expire("user", 300);
- Obtener redis
//连接
Jedis jedis=JedisConnect.Conn();
//获取redis中的user(json字符串形式)
String json_user=jedis.get("user");
//json字符串转对象
User user=JSONObject.parseObject(json_user, User.class);
- Base de datos de simulación para agregar un uso flexible
//连接
Jedis jedis=JedisConnect.Conn();
//对象转json字符串
String reward_json=JSONObject.toJSONString(reward);
/*
字符串转json对象
JSONObject json_object=JSONObject.parseObject({"Message":"OK"});
json集合转java集合
List<Goods> list2= JSONArray.parseArray(JList, Goods.class);
*/
//存入的时候使用“表名:主键名:主键值”形式存储将自动生成分级目录
jedis.set("reward:r_id:"+reward.getR_id(), reward_json);