java读取html并替换相关内容

import java.io.*;
/**
 * Created by IntelliJ IDEA.
 * User: zl420226
 * Date: 2010-4-10
 * Time: 13:58:23
 * To change this template use File | Settings | File Templates.
 */
public class ReplaceText {
    public static void main(String[] args)
    {try {
        BufferedReader buff = new BufferedReader(
                new InputStreamReader(System.in));
        System.out.print("Source Folder path:");
        System.out.flush();
        String folderPath = buff.readLine();
        BufferedReader buffTarget = new BufferedReader(
                new InputStreamReader(System.in));
        System.out.print("target Folder path:");
        System.out.flush();
        String targetFolder = buffTarget.readLine();
        BufferedReader buffSourceText = new BufferedReader(
                new InputStreamReader(System.in));
        System.out.print("The content you will replace:");
        System.out.flush();
        String source = buffSourceText.readLine();
        BufferedReader buffTargetText = new BufferedReader(
                new InputStreamReader(System.in));
        System.out.print("replace as:");
        System.out.flush();
        String target = buffTargetText.readLine();
        File   file   =   new   File(folderPath);
        if(file.isDirectory())   {
            String[]   filelist   =   file.list();
            for   (int   i   =   0;   i   <   filelist.length;   i++)   {
                {
                    BufferedReader bf = new BufferedReader(new FileReader(folderPath+"\\"+filelist[i]));
                    BufferedWriter bw = new BufferedWriter(new FileWriter(targetFolder+"\\"+filelist[i]));
                    String s = null;
                    while( (s = bf.readLine()) != null) {
                        s = s.replaceAll(source,target);
                        bw.write(s);
                        bw.newLine();
                        bw.flush();
                    }
                    bw.close();
                }
            }
        }
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    }
}

网络摘录：

知道你有无注意到,JDK中的String的ReplaceAll方法支持的是正则表达式,在你的参数中可能出现正则表达式转义符的情况下,很可能 得到意想不到的结果.所以做一个自己的ReplaceAll方法还是一个很有必要的工作.

 public static String replaceAll(String src, String fnd, String rep) {
  int pos = 0;
  int prepos = 0;
  int fndlen = fnd.length();
  String newstr = "";
  pos = src.indexOf(fnd, pos);
  while (pos >= 0) {
   newstr += src.substring(prepos, pos);
   newstr += rep;
   prepos = pos + fndlen;
   pos = src.indexOf(fnd, pos + fndlen);
  }
  newstr += src.substring(prepos);
  return newstr;
 }