java中操作redis

package com.redis;

import java.io.IOException;
import java.util.concurrent.ConcurrentHashMap;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.Transaction;
/**
 * java中操作redis
 * 
 * @author Administrator
 *
 */
public class RedisTest {
    
    // 连接redis
    private static synchronized Jedis getJedis(String ip){
        final Jedis jr = new Jedis(ip);
        jr.auth("@admin123");
        System.out.println("连接成功: 	"+jr.ping());
        return jr;
    }
    // 关闭redis连接
    private static synchronized void closeJedis(Jedis jr){
        jr.close();
    }
    // 判断是否存在key 
    private static boolean keyIsExist(Jedis jd,String key){
        return jd.exists(key);
    }
    // 删除元素
    private static void delKey(Jedis jd, String key){
        jd.del(key);
    }
    // 操作String
    private static synchronized void opString(Jedis jr){
        if(keyIsExist(jr,"company"))
            delKey(jr,"company");
        jr.set("company", "oracle");
        System.out.println(jr.get("company"));
    }
    // 操作hash
    private static void opHash(Jedis jr){
        if(keyIsExist(jr,"user1"))
            delKey(jr,"user1");
        ConcurrentHashMap<String,String> chm = new ConcurrentHashMap<String, String>();
        chm.put("name", "Tom");
        chm.put("age", "26");
        chm.put("major", "computer");
        jr.hmset("user1", chm);
        System.out.println(jr.hgetAll("user1").get("name"));
        System.out.println(jr.hgetAll("user1").get("age"));
        System.out.println(jr.hgetAll("user1").get("major"));
    }
    // 操作list
    private static synchronized void opList(Jedis jr){
        if(keyIsExist(jr,"colorSet"))
            delKey(jr,"colorSet");
        jr.lpush("colorSet", "red","blue","yellow","red");
        System.out.println(jr.lrange("colorSet", 0, 10));
    }
    // 操作Set
    private static synchronized void opSet(Jedis jr){
        if(keyIsExist(jr,"hobby"))
            delKey(jr,"hobby");
        jr.sadd("hobby", "running","basketball","volleyball","volleyball");
        System.out.println(jr.smembers("hobby"));
        System.out.println(jr.smembers("hobby").size());
    }
    // 操作ZSet
    private static synchronized void opZset(Jedis jr){
        if(keyIsExist(jr,"hobby2"))
            delKey(jr,"hobby2");
        jr.zadd("hobby2",2.0, "running");
        jr.zadd("hobby2",2.0, "basketball");
        jr.zadd("hobby2",2.0, "volleyball");
        jr.zadd("hobby2",2.0, "volleyball");
        for(String s:jr.zrangeByScore("hobby2", 0, 4))
            System.out.println(s);
    }
    // 数据库备份
    private static synchronized void save(Jedis jr){
        jr.save();
    }
    // 事务控制
    private static void tranController(Jedis jr) throws IOException{
        System.out.println("**************************************开启事务**************************************");
        Transaction trans = jr.multi();
        System.out.println("*********java Redis 开始执行事务*********");
        trans.exec();
        System.out.println("*********java Redis operating String*********");
        opString(jr);
        System.out.println("*********java Redis operating String over*********");
        System.out.println("*********java Redis operating hash*********");
        opHash(jr);
        System.out.println("*********java Redis operating hash over*********");
        System.out.println("*********java Redis operating List*********");
        opList(jr);
        System.out.println("*********java Redis operating List over*********");
        System.out.println("*********java Redis operating Set*********");
        opSet(jr);
        System.out.println("*********java Redis operating Set over*********");
        System.out.println("*********java Redis operating zSet*********");
        opZset(jr);
        System.out.println("*********java Redis operating zSet over*********");
        System.out.println("*********java Redis save redis db*********");
        save(jr);
        System.out.println("*********java Redis save redis db over*********");
        trans.close();
        System.out.println("**************************************关闭事务**************************************");
        System.out.println("*********java Redis close redis db connection*********");
        closeJedis(jr);
        System.out.println("*********java Redis close redis db connection over*********");
    }
    public static void main(String[] args) throws IOException{
        Jedis jr = getJedis("localhost");
        tranController(jr);
    }
}