标签:Java String Redis System Jedis println jedis out
先决条件
- jdk
- idea/eclipse
- Jedis所需要的jar包
- Commons-pool-1.6.jar
- Jedis-2.1.0.jar
- Jedis常用操作
- 测试连通性
package cn.lonsun.staticcenter.controller; import redis.clients.jedis.Jedis; public class RedisController{ public static void main(String[] args) { //连接本地jedis Jedis jedis = new Jedis("127.0.0.1",6379); //查看服务是否运行 打出pong表示成功 System.out.println("connection is ok==============>"+jedis.ping()); } }
- 5+1(一个key、五大数据类型)
public static void main(String[] args) { Jedis jedis = new Jedis("127.0.0.1",6379); //key Set<String> keys = jedis.keys("*"); for (Iterator iterator = keys.iterator(); iterator.hasNext();) { String key = (String) iterator.next(); System.out.println(key); } System.out.println("jedis.exists====>"+jedis.exists("k2")); System.out.println(jedis.ttl("k1")); //String //jedis.append("k1","myreids"); System.out.println(jedis.get("k1")); jedis.set("k4","k4_redis"); System.out.println("----------------------------------------"); jedis.mset("str1","v1","str2","v2","str3","v3"); System.out.println(jedis.mget("str1","str2","str3")); //list System.out.println("----------------------------------------"); //jedis.lpush("mylist","v1","v2","v3","v4","v5"); List<String> list = jedis.lrange("mylist",0,-1); for (String element : list) { System.out.println(element); } //set jedis.sadd("orders","jd001"); jedis.sadd("orders","jd002"); jedis.sadd("orders","jd003"); Set<String> set1 = jedis.smembers("orders"); for (Iterator iterator = set1.iterator(); iterator.hasNext();) { String string = (String) iterator.next(); System.out.println(string); } jedis.srem("orders","jd002"); System.out.println(jedis.smembers("orders").size()); //hash jedis.hset("hash1","userName","lisi"); System.out.println(jedis.hget("hash1","userName")); Map<String,String> map = new HashMap<String,String>(); map.put("telphone","13811814763"); map.put("address","atguigu"); map.put("email","abc@163.com"); jedis.hmset("hash2",map); List<String> result = jedis.hmget("hash2", "telphone","email"); for (String element : result) { System.out.println(element); } //zset jedis.zadd("zset01",60d,"v1"); jedis.zadd("zset01",70d,"v2"); jedis.zadd("zset01",80d,"v3"); jedis.zadd("zset01",90d,"v4"); Set<String> s1 = jedis.zrange("zset01",0,-1); for (Iterator iterator = s1.iterator(); iterator.hasNext();) { String string = (String) iterator.next(); System.out.println(string); } }
- 事务提交
1.日常
public static void main(String[] args) { //连接本地jedis Jedis jedis = new Jedis("127.0.0.1",6379); //查看服务是否运行 打出pong表示成功 System.out.println("connection is ok==============>"+jedis.ping()); //监控key,该操作关闭事务 /*3 jedis.watch("serialNum"); jedis.set("serialNum","##########"); jedis.unwatch();*/ Transaction transaction = jedis.multi(); Response<String> response = transaction.get("serialNum"); transaction.set("serialNum","s002"); response=transaction.get("serialNum"); transaction.lpush("list3","a"); transaction.lpush("list3","b"); transaction.lpush("list3","c"); transaction.exec(); //2 transaction.discard(); System.out.println("serialNum***********"+response.get()); }
2.加锁
public boolean transMethod() { //连接本地jedis Jedis jedis = new Jedis("127.0.0.1",6379); //查看服务是否运行 打出pong表示成功 System.out.println("connection is ok==============>"+jedis.ping()); int balace;//可用余额 int debt;//欠额 int amtToSubstract=10;//实刷额度 jedis.watch("balace"); balace=Integer.parseInt(jedis.get("balace")); if(balace<amtToSubstract){//额度不够 jedis.unwatch(); System.out.println("modify"); return false; }else{ System.out.println("***********transaction"); Transaction transaction = jedis.multi(); transaction.decrBy("balace",amtToSubstract); transaction.incrBy("debt",amtToSubstract); transaction.exec(); balace = Integer.parseInt(jedis.get("balance")); debt = Integer.parseInt(jedis.get("debt")); System.out.println("*******" + balace); System.out.println("*******" + debt); return true; }
- 主从复制
public static void main(String[] args) throws InterruptedException { Jedis jedis_M = new Jedis("127.0.0.1",6379); Jedis jedis_S = new Jedis("127.0.0.1",6380); jedis_S.slaveof("127.0.0.1",6379); jedis_M.set("k6","v6"); Thread.sleep(500); System.out.println(jedis_S.get("k6")); }
标签:Java,String,Redis,System,Jedis,println,jedis,out 来源: https://www.cnblogs.com/chengmr/p/13300447.html
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