建网站需要怎样做长沙seo智优营家

一，Jedis

我们要使用Java来操作Redis

Jedis是Redis官方推荐的java连接工具。使用Java操作Redis的中间件。如果你要使用Java操作redis，那么一定要对jedis十分的熟悉

二，idea 连接jedis

        1，导入jar包

        

<dependencies><dependency><groupId>redis.clients</groupId><artifactId>jedis</artifactId><version>4.4.1</version></dependency><!-- https://mvnrepository.com/artifact/com.alibaba.fastjson2/fastjson2 --><dependency><groupId>com.alibaba.fastjson2</groupId><artifactId>fastjson2</artifactId><version>2.0.43</version></dependency></dependencies>

      2，编写实体类测试链接

        

import redis.clients.jedis.Jedis;public class TestPing {public static void main(String[] args) {Jedis jedis = new Jedis("8.137.146.85",6379);System.out.println(jedis.ping());}
}

      3，是否成功（PONG成功）

       

PONGProcess finished with exit code 0

三，事务测试

import com.alibaba.fastjson2.JSONObject;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.Transaction;public class TestTrancation {public static void main(String[] args) {Jedis jedis = new Jedis("8.137.146.85", 6379);JSONObject jsonObject = new JSONObject();jsonObject.put("name","acyang");jsonObject.put("hello","world");String rs = jsonObject.toString();Transaction multi = jedis.multi();try{multi.set("user1",rs);multi.exec();}catch (Exception e){multi.discard();  //放弃事务e.printStackTrace();}finally {System.out.println(jedis.get("user1"));jedis.close();}}
}

输出

{"name":"acyang","hello":"world"}Process finished with exit code 0