读写JSP页面

<%@ page contentType="text/html; charset=gb2312" import="java.io.*" buffer="64kb"%>
  读文件
<% 

   try {
         //使用servletContext装入文件资源
        //InputStream in =getServletContext().getResourceAsStream("/file.txt");
        //String file ="";
        // String temp="";
         //BufferedReader buffer =new BufferedReader(new InputStreamReader(new BufferedInputStream(in)));
        //第二种方法
        BufferedReader in =new BufferedReader(new FileReader("D:\\User.txt"));
         String file ="";
         String temp=""; 
         while((temp=in.readLine())!=null) {
            file +=temp;
         }
         in.close();
         out.println(file);
         out.flush();
   }catch(Exception e)
   {
      out.println(e);
   }

%>
  //写文件
  <%@ page contentType="text/html; charset=gbk" import="java.io.*"%>
  <%