getuserinfoservlet.java

jsp + servlete + jdbc开的管理系统

package hbu.david.cmc.servlet;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import sun.rmi.server.Dispatcher;

import hbu.david.cmc.bean.*;
import hbu.david.cmc.http.ServletEncoding;
import hbu.david.cmc.work.*;
import hbu.david.cmc.util.*;

/**
 * Servlet implementation class for Servlet: GetUserInfoServlet
 *
 */
 public class GetUserInfoServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
   static final long serialVersionUID = 1L;
   
    /* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#HttpServlet()
	 */
	public GetUserInfoServlet() {
		super();
	}   	
	
	/* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doPost(request,response);
	}  	
	
	/* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		ServletEncoding.setEncoding(request, response);
		int userId=ParseRequest.parseInt(request, "userId", 0);
		RequestDispatcher requestDispatcher=null;
		int sessionUserId;		
		UserInfo userInfo=UserBean.getUserInfoById(userId);
		response.getWriter().print(userInfo.getUsername());
		if(userInfo==null){
			response.getWriter().print("error!");
		}else{
			response.getWriter().print(userInfo.getUsername());
			if(request.getSession().getAttribute("userInfo")==null){
				response.getWriter().print(userInfo.getUsername());
				request.setAttribute("userInfo", userInfo);
				requestDispatcher=request.getRequestDispatcher("userInfo.jsp");
			}else{
				sessionUserId=((UserInfo)request.getSession().getAttribute("userInfo")).getId();
				request.setAttribute("userInfo", userInfo);
				if(sessionUserId==userInfo.getId()){
					//如果该用户和当前登录用户是一个人，则可以修改信息
					response.getWriter().print(userInfo);
					requestDispatcher=request.getRequestDispatcher("adminUserInfo.jsp");
				}else{
					response.getWriter().print("error!");
					requestDispatcher=request.getRequestDispatcher("userInfo.jsp");
				}
			}
		}
		requestDispatcher.forward(request, response);
	}   	  	    
}