Java Operations Redis

1. Create project, project name Redisdemo, directory structure

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The contents of the 2.RedisJava file are as follows

package com.demo;import java.util.hashmap;import java.util.iterator;import java.util.list; import java.util.map;import redis.clients.jedis.jedis;import redis.clients.jedis.jedispool; Import redis.clients.jedis.jedispoolconfig;public class redisjava {public static  void main (String[] args) {jedis jedis = null;//server ipstring add =  "127.0.01";//port number int port = 6379;//maximum available quantity int max_active = 1024;//idle Jedis instance number int  max_idle = 200;//wait time, number of milliseconds int max_wait = 10000;//time-out int timeout =  10000;//Verify the operation, the validated Jedis are available boolean test_on_borrow = true;//connection pool objects Jedispool jedispool  = null;//Configuration Connection Pool jedispoolconfig config = new jedispoolconfig (); Config.setmaxactive (max_active); Config.setmaxidle (Max_idle); config.setmaxwait (max_wait); Config.setTestOnBorrow (Test_on_borrow); jedispool = new&nbSp Jedispool (config,add,port,timeout); if (jedispool != null) {Jedis = jedispool.getresource ();} if (Jedis != null) {/* *  the action string  *///1. Add Data Jedis.set ("name",  "Xiaoxiao");// Gets the data System.out.println (Jedis.get ("name"));//2. Splicing jedis.append to the existing key ("name",  " i love you" ); System.out.println (Jedis.get ("name"));//3. Delete Keyjedis.del ("name"); System.out.println (Jedis.get ("name"));//4. Set multiple key-value pairs jedis.msetnx ("name", "Xiaoxiao", "Age", "E", "email", "[email  protected] "); System.out.println (Jedis.get ("name")); System.out.println (Jedis.get ("Age")); System.out.println (Jedis.get ("email"))//5. Add 1 Operation JEDIS.INCR ("age") to Key age; System.out.println (Jedis.get ("Age")); System.out.println ("-----------------------------------I am the dividing line---------------------------------");/* *   Operations Collection MAP&NBSP;*///1. Add Data map<string,string> maps = new hashmap<string,string > ("name",  "Xiaoxiao"), Maps.put ("Age",  "Maps.put"), Maps.put ("Email ", " [email protected] "), Jedis.hmset (" Mymap ",  maps);//Get data from map list<string>  Lists = jedis.hmget ("Mymap",  "name", "Age", "email"); SYSTEM.OUT.PRINTLN (lists)//2. Delete the key values in the map Jedis.hdel ("Mymap",  "email"); System.out.println (Jedis.hmget ("Mymap",  "email"))//3. Get the number of elements Mymap (System.out.println ("Jedis.hlen")) ;//4. Determine whether Mymap exists System.out.println (jedis.exists ("Mymap"));//5. Gets all Mymap in KeySystem.out.println (Jedis.hkeys (" Mymap ")//6. Gets all the values in Mymap System.out.println (jedis.hvals (" Mymap "));//7. Traversal mymapiterator<string> it  = jedis.hkeys ("Mymap"). Iterator ();while  (It.hasnext ())  {String key =  It.next (); System.out.println (key +  "="  + jedis.hget ("Mymap",  key));} System.out.println ("-----------------------------------I am the dividing line---------------------------------");/* *   Operation LIST&NBSP;*///1. Add Data Jedis.lpush to list ("MyList",  "Redis"), Jedis.lpush ("MyList",  "git"); Jedis.lpush ("MyList", " maven "); System.out.println (Jedis.lrange ("MyList",  0, -1))//2. Delete Listjedis.del ("MyList");//3. Inserts one or more values into the tail of the list Jedis.rpush ("MyList",  "Redis"), Jedis.rpush ("MyList",  "git"), Jedis.rpush ("MyList",   "Gradle");//4. All elements in the output mylist System.out.println (Jedis.lrange ("MyList",  0, -1)); System.out.println ("-----------------------------------I am the dividing line---------------------------------");/* *   Operation SET&NBSP;*///1. Add Data Jedis.sadd ("MySet",  "Gaoneng"), Jedis.sadd ("MySet",  "Banya"), Jedis.sadd (" MySet ", " Houzi ") Jedis.sadd (" MySet ", " Pangzi ")//2. Get all Values System.out.println (Jedis.smembers (" MySet ")) //3. Determine whether an element exists System.out.println (Jedis.sismember ("MySet",  "Gaoneng"));//4. Delete element Jedis.srem ("MySet",  " Gaoneng "); System.out.println (Jedis.smembers ("MySet"))//5. Returns a random element in the collection System.out.println (Jedis.srandmember ("MySet"));// 6. Returns the number of elements in the set System.out.println (Jedis.scard ("MySet")); System.out.println ("-----------------------------------I am the dividing line---------------------------------");/* * list  sort  */jedis.del (" orderlist "); Jedis.rpush (" OrderList ", " 1 "); Jedis.rpush ("OrderList",  "9"), Jedis.rpush ("OrderList",  "3"), Jedis.lpush ("OrderList",  "6"); Jedis.lpush ("OrderList",  "4"); Jedis.lpush ("OrderList",  "8"); System.out.println (Jedis.lrange ("OrderList",  0, -1));//output sorted results System.out.println (Jedis.sort (" OrderList ")); System.out.println (Jedis.lrange ("OrderList",  0, -1));}}}

3. Run the program execution results

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This article from the "Vegetarian Yan" blog, declined to reprint!

Java Operations Redis