REDIS28)：Redis 数据类型 (15) Redis 列表(List)(JAVA)

 

private void ListOperate() 
   { 
       System.out.println("======================list=========================="); 
       // 清空数据 
       System.out.println("清空库中所有数据："+jedis.flushDB()); 
 
       System.out.println("=============增=============");
       shardedJedis.lpush("stringlists", "vector"); 
       shardedJedis.lpush("stringlists", "ArrayList"); 
       shardedJedis.lpush("stringlists", "vector");
       shardedJedis.lpush("stringlists", "vector");
       shardedJedis.lpush("stringlists", "LinkedList");
       shardedJedis.lpush("stringlists", "MapList");
       shardedJedis.lpush("stringlists", "SerialList");
       shardedJedis.lpush("stringlists", "HashList");
       shardedJedis.lpush("numberlists", "3");
       shardedJedis.lpush("numberlists", "1");
       shardedJedis.lpush("numberlists", "5");
       shardedJedis.lpush("numberlists", "2");
       System.out.println("所有元素-stringlists："+shardedJedis.lrange("stringlists", 0, -1));
       System.out.println("所有元素-numberlists："+shardedJedis.lrange("numberlists", 0, -1));
       
       System.out.println("=============删=============");
       // 删除列表指定的值 ，第二个参数为删除的个数（有重复时），后add进去的值先被删，类似于出栈
       System.out.println("成功删除指定元素个数-stringlists："+shardedJedis.lrem("stringlists", 2, "vector")); 
       System.out.println("删除指定元素之后-stringlists："+shardedJedis.lrange("stringlists", 0, -1));
       // 删除区间以外的数据 
       System.out.println("删除下标0-3区间之外的元素："+shardedJedis.ltrim("stringlists", 0, 3));
       System.out.println("删除指定区间之外元素后-stringlists："+shardedJedis.lrange("stringlists", 0, -1));
       // 列表元素出栈 
       System.out.println("出栈元素："+shardedJedis.lpop("stringlists")); 
       System.out.println("元素出栈后-stringlists："+shardedJedis.lrange("stringlists", 0, -1));
       
       System.out.println("=============改=============");
       // 修改列表中指定下标的值 
       shardedJedis.lset("stringlists", 0, "hello list!"); 
       System.out.println("下标为0的值修改后-stringlists："+shardedJedis.lrange("stringlists", 0, -1));
       System.out.println("=============查=============");
       // 数组长度 
       System.out.println("长度-stringlists："+shardedJedis.llen("stringlists"));
       System.out.println("长度-numberlists："+shardedJedis.llen("numberlists"));
       // 排序 
       /*
        * list中存字符串时必须指定参数为alpha，如果不使用SortingP@R_502_6460@ms，而是直接使用sort("list")，
        * 会出现"ERR One or more scores can't be converted into double"
        */
       SortingP@R_502_6460@ms sortingP@R_502_6460@meters = new SortingP@R_502_6460@ms();
       sortingP@R_502[email protected]();
       sortingP@R_502[email protected](0, 3);
       System.out.println("返回排序后的结果-stringlists："+shardedJedis.sort("stringlists",sortingP@R_502_6460@meters)); 
       System.out.println("返回排序后的结果-numberlists："+shardedJedis.sort("numberlists"));
       // 子串：  start为元素下标，end也为元素下标；-1代表倒数一个元素，-2代表倒数第二个元素
       System.out.println("子串-第二个开始到结束："+shardedJedis.lrange("stringlists", 1, -1));
       // 获取列表指定下标的值 
       System.out.println("获取下标为2的元素："+shardedJedis.lindex("stringlists", 2)+"\n");
   }
 

 

======================list==========================
清空库中所有数据：OK
=============增=============
所有元素-stringlists：[HashList, SerialList, MapList, LinkedList, vector, vector, ArrayList, vector]
所有元素-numberlists：[2, 5, 1, 3]
=============删=============
成功删除指定元素个数-stringlists：2
删除指定元素之后-stringlists：[HashList, SerialList, MapList, LinkedList, ArrayList, vector]
删除下标0-3区间之外的元素：OK
删除指定区间之外元素后-stringlists：[HashList, SerialList, MapList, LinkedList]
出栈元素：HashList
元素出栈后-stringlists：[SerialList, MapList, LinkedList]
=============改=============
下标为0的值修改后-stringlists：[hello list!, MapList, LinkedList]
=============查=============
长度-stringlists：3
长度-numberlists：4
返回排序后的结果-stringlists：[LinkedList, MapList, hello list!]
返回排序后的结果-numberlists：[1, 2, 3, 5]
子串-第二个开始到结束：[MapList, LinkedList]
获取下标为2的元素：LinkedList