java读取网页 生成页面

String urlstring = "http://baidu.com";   //读取页面
     String filename = "E:\\index.jsp";//生成页面地址
     PrintWriter out = response.getWriter();
     InputStream is = null;   
        BufferedReader br = null;   
        BufferedWriter bw = null;   
        try {   
            out.println("读取页面： " + urlstring+"
");   
            URL url = new URL(urlstring);   
            is = url.openStream(); // throws an IOException    
            br = new BufferedReader(new InputStreamReader(is));   
            bw = new BufferedWriter(new FileWriter(filename));   
            String line = null;   
            int i=0;
            while ((line = br.readLine()) != null) 
            {   
             if(i==0)
             {
                 bw.write("<%@ page language=\"java\" import=\"java.util.*\" pageEncoding=\"gbk\"%>"+line); 
                }  
                else
                {
                 if(i%400==0)
                 {
                 bw.write("<%%>"+line); 
                 }
                 else
                 {
                 bw.write(line); 
                 }