java - String.replace() 不替换所有出现的地方

Question

我有一个很长的字符串，看起来与此类似。

355,356,357,358,359,360,361,382,363,364,365,366,360,361,363,366,360,361,363,366,360,361,363,366,360,361,363,366,360,361,363,366,360,361,363,366,360,361,363,366,368,369,313,370,371,372,373,374,375,376,377,378,379,380,381,382,382,382,382,382,382,383,384,385,380,381,382,382,382,382,382,386,387,388,389,380,381,382,382,382,382,382,382,390,391,380,381,382,382,382,382,382,392,393,394,395,396,397,398,399,....

当我尝试使用以下代码从字符串中删除数字 382 时。

String str = "355,356,357,358,359,360,361,382,363,364,365,366,360,361,363,366,360,361,363,366,360,361,363,366,360,361,363,366,360,361,363,366,360,361,363,366,360,361,363,366,368,369,313,370,371,372,373,374,375,376,377,378,379,380,381,382,382,382,382,382,382,383,384,385,380,381,382,382,382,382,382,386,387,388,389,380,381,382,382,382,382,382,382,390,391,380,381,382,382,382,382,382,392,393,394,395,396,397,398,399,...."
str = str.replace(",382,", ",");

但似乎并不是所有的出现都被替换了。原来出现次数超过3000次的字符串，替换后还剩下630次左右。

String.replace() 的功能是否有限？如果是这样，有没有可能实现我所需要的方法？

Answer 1

您还需要替换结尾的逗号(如果存在，则不会出现在列表的最后):

str = str.replaceAll("\\b382,?", "");

注意\b字边界以防止匹配"-,1382,-"。

以上内容将转换为:

382,111,382,1382,222,382

至:

111,1382,222