Java中使用Jedis操作Redis

使用Java操作Redis需要jedis-2.1.0.jar，下載地址：http://files.cnblogs.com/liuling/jedis-2.1.0.jar.zip

如果需要使用Redis連接池的話，還需commons-pool-1.5.4.jar，下載地址:http://files.cnblogs.com/liuling/commons-pool-1.5.4.jar.zip

1?package?com.test;

2

3?import?java.util.HashMap;

4?import?java.util.Iterator;

5?import?java.util.List;

6?import?java.util.Map;

7

8?import?org.junit.Before;

9?import?org.junit.Test;

10

11?import?redis.clients.jedis.Jedis;

12

13?public?class?TestRedis?{

14?????private?Jedis?jedis;

15

16?????@Before

17?????public?void?setup()?{

18?????????//連接redis服務器，192.168.0.100:6379

19?????????jedis?=?new?Jedis("192.168.0.100",?6379);

20?????????//權限認證

21?????????jedis.auth("admin");

22?????}

23

24?????/**

25??????*?redis存儲字符串

26??????*/

27?????@Test

28?????public?void?testString()?{

29?????????//-----添加數據----------

30?????????jedis.set("name","xinxin");//向key-->name中放入了value-->xinxin

31?????????System.out.println(jedis.get("name"));//執行結果：xinxin

32

33?????????jedis.append("name",?"?is?my?lover");?//拼接

34?????????System.out.println(jedis.get("name"));

35

36?????????jedis.del("name");??//刪除某個鍵

37?????????System.out.println(jedis.get("name"));

38?????????//設置多個鍵值對

39?????????jedis.mset("name","liuling","age","23","qq","476777XXX");

40?????????jedis.incr("age");?//進行加1操作

41?????????System.out.println(jedis.get("name")?+?"-"?+?jedis.get("age")?+?"-"?+?jedis.get("qq"));

42

43?????}

44

45?????/**

46??????*?redis操作Map

47??????*/

48?????@Test

49?????public?void?testMap()?{

50?????????//-----添加數據----------

51?????????Mapmap?=?new?HashMap();

52?????????map.put("name",?"xinxin");

53?????????map.put("age",?"22");

54?????????map.put("qq",?"123456");

55?????????jedis.hmset("user",map);

56?????????//取出user中的name，執行結果:[minxr]-->注意結果是一個泛型的List

57?????????//第一個參數是存入redis中map對象的key，后面跟的是放入map中的對象的key，后面的key可以跟多個，是可變參數

58?????????Listrsmap?=?jedis.hmget("user",?"name",?"age",?"qq");

59?????????System.out.println(rsmap);

60

61?????????//刪除map中的某個鍵值

62?????????jedis.hdel("user","age");

63?????????System.out.println(jedis.hmget("user",?"age"));?//因為刪除了，所以返回的是null

64?????????System.out.println(jedis.hlen("user"));?//返回key為user的鍵中存放的值的個數2

65?????????System.out.println(jedis.exists("user"));//是否存在key為user的記錄?返回true

66?????????System.out.println(jedis.hkeys("user"));//返回map對象中的所有key

67?????????System.out.println(jedis.hvals("user"));//返回map對象中的所有value

68

69?????????Iteratoriter=jedis.hkeys("user").iterator();

70?????????while?(iter.hasNext()){

71?????????????String?key?=?iter.next();

72?????????????System.out.println(key+":"+jedis.hmget("user",key));

73?????????}

74?????}

75

76?????/**

77??????*?jedis操作List

78??????*/

79?????@Test

80?????public?void?testList(){

81?????????//開始前，先移除所有的內容

82?????????jedis.del("java?framework");

83?????????System.out.println(jedis.lrange("java?framework",0,-1));

84?????????//先向key?java?framework中存放三條數據

85?????????jedis.lpush("java?framework","spring");

86?????????jedis.lpush("java?framework","struts");

87?????????jedis.lpush("java?framework","hibernate");

88?????????//再取出所有數據jedis.lrange是按范圍取出，

89?????????//?第一個是key，第二個是起始位置，第三個是結束位置，jedis.llen獲取長度?-1表示取得所有

90?????????System.out.println(jedis.lrange("java?framework",0,-1));

91

92?????????jedis.del("java?framework");

93?????????jedis.rpush("java?framework","spring");

94?????????jedis.rpush("java?framework","struts");

95?????????jedis.rpush("java?framework","hibernate");

96?????????System.out.println(jedis.lrange("java?framework",0,-1));

97?????}

98

99?????/**

100??????*?jedis操作Set

101??????*/

102?????@Test

103?????public?void?testSet(){

104?????????//添加

105?????????jedis.sadd("user","liuling");

106?????????jedis.sadd("user","xinxin");

107?????????jedis.sadd("user","ling");

108?????????jedis.sadd("user","zhangxinxin");

109?????????jedis.sadd("user","who");

110?????????//移除noname

111?????????jedis.srem("user","who");

112?????????System.out.println(jedis.smembers("user"));//獲取所有加入的value

113?????????System.out.println(jedis.sismember("user",?"who"));//判斷?who?是否是user集合的元素

114?????????System.out.println(jedis.srandmember("user"));

115?????????System.out.println(jedis.scard("user"));//返回集合的元素個數

116?????}

117

118?????@Test

119?????public?void?test()?throws?InterruptedException?{

120?????????//jedis?排序

121?????????//注意，此處的rpush和lpush是List的操作。是一個雙向鏈表(但從表現來看的)

122?????????jedis.del("a");//先清除數據，再加入數據進行測試

123?????????jedis.rpush("a",?"1");

124?????????jedis.lpush("a","6");

125?????????jedis.lpush("a","3");

126?????????jedis.lpush("a","9");

127?????????System.out.println(jedis.lrange("a",0,-1));//?[9,?3,?6,?1]

128?????????System.out.println(jedis.sort("a"));?//[1,?3,?6,?9]??//輸入排序后結果

129?????????System.out.println(jedis.lrange("a",0,-1));

130?????}

131

132?????@Test

133?????public?void?testRedisPool()?{

134?????????RedisUtil.getJedis().set("newname",?"中文測試");

135?????????System.out.println(RedisUtil.getJedis().get("newname"));

136?????}

137?}

與50位技術專家面對面20年技術見證，附贈技術全景圖

總結

以上是生活随笔為你收集整理的java jedis使用_Java中使用Jedis操作Redis的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。