invalidateservlet.java

网上购物源代码

package com.chinaaccpservlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class InvalidateServlet extends HttpServlet {

	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		//response.setContentType("text/html;charset=utf-8");
		//request.setCharacterEncoding("utf-8");
		//response.setCharacterEncoding("utf-8");
		HttpSession session = request.getSession();
		PrintWriter out = response.getWriter();
		String name = (String)session.getAttribute("name");
  		if(name!=null)
  		{
  			session.invalidate();
  			response.setHeader("refresh","1;url=Jsp/Main.jsp");
  		}
  		else
  		{
  			response.sendRedirect("Main.jsp");
  		}
		out.flush();
		out.close();
	}

	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		this.doGet(request, response);
	}

}