1 package com.redis;
2
3 import java.io.IOException;
4 import java.util.concurrent.ConcurrentHashMap;
5
6 import redis.clients.jedis.Jedis;
7 import redis.clients.jedis.Transaction;
8 /**
9 * java中操作redis
10 *
11 * @author Administrator
12 *
13 */
14 public class RedisTest {
15
16 // 连接redis
17 private static synchronized Jedis getJedis(String ip){
18 final Jedis jr = new Jedis(ip);
19 jr.auth("@admin123");
20 System.out.println("连接成功: \t"+jr.ping());
21 return jr;
22 }
23 // 关闭redis连接
24 private static synchronized void closeJedis(Jedis jr){
25 jr.close();
26 }
27 // 判断是否存在key
28 private static boolean keyIsExist(Jedis jd,String key){
29 return jd.exists(key);
30 }
31 // 删除元素
32 private static void delKey(Jedis jd, String key){
33 jd.del(key);
34 }
35 // 操作String
36 private static synchronized void opString(Jedis jr){
37 if(keyIsExist(jr,"company"))
38 delKey(jr,"company");
39 jr.set("company", "oracle");
40 System.out.println(jr.get("company"));
41 }
42 // 操作hash
43 private static void opHash(Jedis jr){
44 if(keyIsExist(jr,"user1"))
45 delKey(jr,"user1");
46 ConcurrentHashMap<String,String> chm = new ConcurrentHashMap<String, String>();
47 chm.put("name", "Tom");
48 chm.put("age", "26");
49 chm.put("major", "computer");
50 jr.hmset("user1", chm);
51 System.out.println(jr.hgetAll("user1").get("name"));
52 System.out.println(jr.hgetAll("user1").get("age"));
53 System.out.println(jr.hgetAll("user1").get("major"));
54 }
55 // 操作list
56 private static synchronized void opList(Jedis jr){
57 if(keyIsExist(jr,"colorSet"))
58 delKey(jr,"colorSet");
59 jr.lpush("colorSet", "red","blue","yellow","red");
60 System.out.println(jr.lrange("colorSet", 0, 10));
61 }
62 // 操作Set
63 private static synchronized void opSet(Jedis jr){
64 if(keyIsExist(jr,"hobby"))
65 delKey(jr,"hobby");
66 jr.sadd("hobby", "running","basketball","volleyball","volleyball");
67 System.out.println(jr.smembers("hobby"));
68 System.out.println(jr.smembers("hobby").size());
69 }
70 // 操作ZSet
71 private static synchronized void opZset(Jedis jr){
72 if(keyIsExist(jr,"hobby2"))
73 delKey(jr,"hobby2");
74 jr.zadd("hobby2",2.0, "running");
75 jr.zadd("hobby2",2.0, "basketball");
76 jr.zadd("hobby2",2.0, "volleyball");
77 jr.zadd("hobby2",2.0, "volleyball");
78 for(String s:jr.zrangeByScore("hobby2", 0, 4))
79 System.out.println(s);
80 }
81 // 数据库备份
82 private static synchronized void save(Jedis jr){
83 jr.save();
84 }
85 // 事务控制
86 private static void tranController(Jedis jr) throws IOException{
87 System.out.println("**************************************开启事务**************************************");
88 Transaction trans = jr.multi();
89 System.out.println("*********java Redis 开始执行事务*********");
90 trans.exec();
91 System.out.println("*********java Redis operating String*********");
92 opString(jr);
93 System.out.println("*********java Redis operating String over*********");
94 System.out.println("*********java Redis operating hash*********");
95 opHash(jr);
96 System.out.println("*********java Redis operating hash over*********");
97 System.out.println("*********java Redis operating List*********");
98 opList(jr);
99 System.out.println("*********java Redis operating List over*********");
100 System.out.println("*********java Redis operating Set*********");
101 opSet(jr);
102 System.out.println("*********java Redis operating Set over*********");
103 System.out.println("*********java Redis operating zSet*********");
104 opZset(jr);
105 System.out.println("*********java Redis operating zSet over*********");
106 System.out.println("*********java Redis save redis db*********");
107 save(jr);
108 System.out.println("*********java Redis save redis db over*********");
109 trans.close();
110 System.out.println("**************************************关闭事务**************************************");
111 System.out.println("*********java Redis close redis db connection*********");
112 closeJedis(jr);
113 System.out.println("*********java Redis close redis db connection over*********");
114 }
115 public static void main(String[] args) throws IOException{
116 Jedis jr = getJedis("localhost");
117 tranController(jr);
118 }
119 }
