java - 用特殊字符覆盖文件中的行

Question

我正在尝试更改 txt 文件中的部分行。它正在工作，但是如果文件中的行包含特殊字符，例如 ?!( 它不起作用怎么了？

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;


public class nomarks
{
    public static void main(String[] args)
    {
        FileInputStream fstream;
        try
        {
            fstream = new FileInputStream("readme.txt");
            BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
            String oldText = "i have !? in my text";
            String textToChange = "cant solve the problem";
            String line;
            String holeFile = "";
            while ((line = br.readLine()) !=null)
            {
                holeFile += line + "\r\n";
            }
            br.close();
            FileWriter writer = new FileWriter("readme.txt");
            String newtext = holeFile.replaceAll(oldText, textToChange);
            writer.write(newtext);
            writer.close();
        } catch (IOException e)
        {
            e.printStackTrace();
        }
    }

}

Answer 1

您可以使用holeFile.replaceAll(Pattern.quote(oldText), textToChange)