forky.java

用Java开发的购物车程序!

package mypackage;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class Forky extends HttpServlet
{
	protected void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException
	{
		HttpSession session=request.getSession(false);
		
		if(session==null)
		{
			response.sendRedirect("error.jsp?errmsg=会话过期");
			return;
		}

		String username=request.getParameter("username");
		response.setContentType("text/html;Charset=gbk");
		//PrintWriter out=response.getWriter();
		request.setAttribute("username",username);
		getServletConfig().getServletContext().getRequestDispatcher("/welcome.jsp").forward(request,response);
	}
}