userreg.java

java web开发宝典源代码

package com.yxq.monitor;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
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 UserReg extends HttpServlet {

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request,response);
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		HttpSession session=request.getSession();
		String id=session.getId();
		ServletContext sc=session.getServletContext();
		HashMap<String,Map> usermap=(HashMap)sc.getAttribute("usermap");
		
		if(usermap==null||!usermap.containsKey(id)){
			UserAccess userA=new UserAccess();
			userA.setUserID(id);
			session.setAttribute("userA",userA);			
		}
		RequestDispatcher rd=request.getRequestDispatcher("/templet.jsp");
		rd.forward(request,response);
	}
}