java替换txt文本中的字符串

public class TestDemo {

  public static String read(File src) {
    StringBuffer res = new StringBuffer();
    String line = null;
  try {
    BufferedReader reader = new BufferedReader(new FileReader(src));
    while ((line = reader.readLine()) != null) {
    res.append(line + "\n");
  }
    reader.close();
  } catch (FileNotFoundException e) {
    e.printStackTrace();
  } catch (IOException e) {
    e.printStackTrace();
  }
    return res.toString();
  }

  public static boolean write(String cont, File dist) {
    try {
      BufferedWriter writer = new BufferedWriter(new FileWriter(dist));
      writer.write(cont);
      writer.flush();
      writer.close();
      return true;
    } catch (IOException e) {
      e.printStackTrace();
      return false;
    }
  }

  public TestDemo() {
  }

  public static void main(String[] args) {
    File src = new File("D:\\rili.log");
    String cont = TestDemo.read(src);
    System.out.println(cont);
    // 对得到的内容进行处理
    cont = cont.replaceAll("asd", "asdf");
    System.out.println(cont);
    // 更新源文件
    System.out.println(TestDemo.write(cont, src));
  }
}

posted @ 2014-07-04 11:25  love_you_girl  阅读(2740)  评论(1编辑  收藏  举报