jsp+java类+servlet实现文件读取、写入的功能(二)

本文是根据tomcat平台下实现而做，文件目录为：
tom_homewebapps ews下:
└html
└WEB-INF
└classes
└com
└FileMan.class
└FileServlet.class
└web.xml
接着我们先实现servlet:FileServlet .java
/*
* FileServlet.java
*
* Created on 2005年6月19日, 下午3:03
*/
package com;
import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet..PageContext;
/**
*
* @author 淘特网
* @version
*/
public class FileServlet extends HttpServlet {

ServletContext sc;
/** Initializes the servlet.
*/
public void init(ServletConfig config) throws ServletException {
super.init(config);
sc=config.getServletContext();

}

/** Destroys the servlet.
*/
public void destroy() {

}

/** Processes requests for both HTTP GET and POST methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
//* TODO output your page here