Redis的Java客户端Jedis

public class Demo01 {
public static void main(String[] args) {
//连接本地的 Redis 服务
Jedis jedis = new Jedis("127.0.0.1",6379);
//查看服务是否运行，打出pong表示OK
    System.out.println("connection is OK==========>: "+jedis.ping());
  }
}

package com.atguigu.redis.test;
import java.util.*;
import redis.clients.jedis.Jedis;
public class Test02 
{
public static void main(String[] args) 
  {
     Jedis jedis = new Jedis("127.0.0.1",6379);
//key
     Set 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 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 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 map = new HashMap();
     map.put("telphone","13811814763");
     map.put("address","atguigu");
     map.put("email","abc@163.com");
     jedis.hmset("hash2",map);
     List 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 s1 = jedis.zrange("zset01",0,-1);
for (Iterator iterator = s1.iterator(); iterator.hasNext();) {
       String string = (String) iterator.next();
       System.out.println(string);
     }
  }
}

package com.atguigu.redis.test;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.Response;
import redis.clients.jedis.Transaction;
public class Test03 
{
public static void main(String[] args) 
  {
Jedis jedis = new Jedis("127.0.0.1",6379);
//监控key，如果该动了事务就被放弃
/*3
     jedis.watch("serialNum");
     jedis.set("serialNum","s#####################");
     jedis.unwatch();*/
     Transaction transaction = jedis.multi();//被当作一个命令进行执行
     Response 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());
  }
}

public class TestTransaction {
public boolean transMethod() {
     Jedis jedis = new Jedis("127.0.0.1", 6379);
int balance;// 可用余额
int debt;// 欠额
int amtToSubtract = 10;// 实刷额度
     jedis.watch("balance");
//jedis.set("balance","5");//此句不该出现，讲课方便。模拟其他程序已经修改了该条目
     balance = Integer.parseInt(jedis.get("balance"));
if (balance 
       jedis.unwatch();
       System.out.println("modify");
return false;
     } else {
       System.out.println("***********transaction");
Transaction transaction = jedis.multi();
       transaction.decrBy("balance", amtToSubtract);
       transaction.incrBy("debt", amtToSubtract);
       transaction.exec();
       balance = Integer.parseInt(jedis.get("balance"));
       debt = Integer.parseInt(jedis.get("debt"));
       System.out.println("*******" + balance);
       System.out.println("*******" + debt);
return true;
     }
  }
/**
   * 通俗点讲，watch命令就是标记一个键，如果标记了一个键， 在提交事务前如果该键被别人修改过，那事务就会失败，这种情况通常可以在程序中
   * 重新再尝试一次。
   * 首先标记了键balance，然后检查余额是否足够，不足就取消标记，并不做扣减； 足够的话，就启动事务进行更新操作，
   * 如果在此期间键balance被其它人修改， 那在提交事务（执行exec）时就会报错， 程序中通常可以捕获这类错误再重新执行一次，直到成功。
   */
public static void main(String[] args) {
     TestTransaction test = new TestTransaction();
boolean retValue = test.transMethod();
     System.out.println("main retValue-------: " + retValue);
  }
}

package com.atguigu.redis.test;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
public class JedisPoolUtil {
private static volatile JedisPool jedisPool = null;//被volatile修饰的变量不会被本地线程缓存，对该变量的读写都是直接操作共享内存。
private JedisPoolUtil() {}
public static JedisPool getJedisPoolInstance()
 {
if(null == jedisPool)
    {
synchronized (JedisPoolUtil.class)
      {
if(null == jedisPool)
         {
           JedisPoolConfig poolConfig = new JedisPoolConfig();
           poolConfig.setMaxTotal(200);//最大连接数
           poolConfig.setMaxActive(1000);
           poolConfig.setMaxIdle(32); //最大空闲连接数
           poolConfig.setMaxWait(100*1000);
           poolConfig.setBlockWhenExhausted(true); //连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true
           poolConfig.setTestOnBorrow(true); //在获取连接的时候检查有效性, 默认false
jedisPool = new JedisPool(poolConfig,"127.0.0.1");
         }
      }
    }
return jedisPool;
 }
public static void release(JedisPool jedisPool,Jedis jedis)
 {
if(null != jedis)
    {
      jedisPool.returnResourceObject(jedis);
    }
 }
}

package com.atguigu.redis.test;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
public class Test01 {
public static void main(String[] args) {
     JedisPool jedisPool = JedisPoolUtil.getJedisPoolInstance();
     Jedis jedis = null;
try 
     {
       jedis = jedisPool.getResource();
       jedis.set("k18","v183");
     } catch (Exception e) {
       e.printStackTrace();
     }finally{
       JedisPoolUtil.release(jedisPool, jedis);
     }
  }
}