用另一个替换特定字符串 - String＃replaceAll（）

I'm actually developping a parser and I'm stuck on a method.

我实际上正在开发一个解析器而且我坚持使用一种方法。

I need to clean specifics words in some sentences, meaning replacing those by a whitespace or a nullcharacter. For now, I came up with this code:

我需要在一些句子中清除特定的单词,意味着用空格或空字符替换它们。现在,我想出了这段代码:

private void clean(String sentence)
{
    try {
        FileInputStream fis = new FileInputStream(
                ConfigHandler.getDefault(DictionaryType.CLEANING).getDictionaryFile());
        BufferedReader bis = new BufferedReader(new InputStreamReader(fis));
        String read;
        List<String> wordList = new ArrayList<String>();

        while ((read = bis.readLine()) != null) {
            wordList.add(read);
        }
    }
    catch (IOException e) {
        e.printStackTrace();
    }

    for (String s : wordList) {
        if (StringUtils.containsIgnoreCase(sentence, s)) { // this comes from Apache Lang
            sentence = sentence.replaceAll("(?i)" + s + "\\b", " ");
        }
    }

    cleanedList.add(sentence);

}

But when I look at the output, I got all of the occurences of the word to be replaced in my sentence replaced by a whitespace.

但是当我查看输出时,我得到了在我的句子中替换为空格的单词的所有出现。

Does anybody can help me out on replacing only the exact words to be replaced on my sentence?

有没有人能帮助我更换我的句子中要替换的确切单词?

Thanks in advance !

提前致谢 !

1 个解决方案

#1

There are two problems in your code:

您的代码中存在两个问题:

You are missing the \b before the string

你错过了字符串之前的\ b

You will run into issues if any of the words from the file has special characters

如果文件中的任何单词都有特殊字符,您将遇到问题

To fix this problem construct your regex as follows:

要解决此问题,请构建正则表达式,如下所示:

sentence = sentence.replaceAll("(?i)\\b\\Q" + s + "\\E\\b", " ");

sentence = sentence.replaceAll("(?i)\\b" + Pattern.quote(s) + "\\b", " ");

#1