java - 从文件中删除数组项

Question

假设我们有一个数组项列表

例如:- a、b、c、d

需要从充满数据的文件中删除，我遗漏了一些东西，任何人都可以帮助我实现这一目标，提前致谢

public static void rmvFromXML(String strFilePath,
        String strTmpFilePath) throws IOException {

    String currentLine = "";
    List<String> list = new ArrayList<String>();
    list.add("a");
    list.add("b");
    list.add("c");
    list.add("d");

    BufferedReader reader = new BufferedReader(new FileReader(strFilePath));
    BufferedWriter fileWriter = null;

    fileWriter = new BufferedWriter(new OutputStreamWriter(
            new FileOutputStream(strTmpFilePath)));

    while ((currentLine = reader.readLine()) != null) {

        String trimmedLine = currentLine.trim();
        System.out.println("Trimmed Line    :- " + trimmedLine);

        for (String value : list) {

            System.out.println("Array Value:-   " + value);
            if (trimmedLine.equals(value))

                continue;

            fileWriter.write(trimmedLine + System.getProperty("line.separator"));
        }
    }
    fileWriter.close();
    reader.close();
}

Answer 1

您可以使用正则表达式。这样您就不必迭代并检查是否行包含您的字符串

while ((currentLine = reader.readLine()) != null) {
Pattern removeWords = Pattern.compile("\\b(?:a|b|c|d)\\b\\s*", Pattern.CASE_INSENSITIVE);
Matcher fix = removeWords.matcher(currentLine);
String fixedString = fix.replaceAll("");
}

尝试用上面的方法来做

input :
abcdefg

output
efg