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SortingParams,而是直接使用sort("list"), * 会出现"ERR One or more scores can't be converted into double" */ SortingParams sortingParameters = new SortingParams(); sortingParameters.alpha(); sortingParameters.limit(0, 3); System.out.println( "返回排序后的结果-stringlists:" + shardedJedis.sort("stringlists", sortingParameters)); 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"); } }
/** * 通过key设置list指定下标位置的value * * <p>如果下标超过list里面value的个数则报错 * * @param key * @param index 从0开始 * @param value * @return 成功返回OK */ public String lset(String key, Long index, String value) { ShardedJedis jedis = null; String res = null; try { jedis = pool.getResource(); res = jedis.lset(key, index, value); } catch (Exception e) { pool.returnBrokenResource(jedis); e.printStackTrace(); } finally { returnResource(pool, jedis); } return res; }