logon.java

一个小的门户的实现。

package user;

import java.io.IOException;
import javax.servlet.RequestDispatcher;
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 Logon extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
//		取得用户提交的用户名和密码
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		
		try 
		{
//			进行用户合法性验证
			UserInfo user = UserBean.logon(username,password);
			
			RequestDispatcher dispatcher = null;
			
			//dispatcher = request.getRequestDispatcher("leftTree.jsp");
			if(user != null)
			{
				//验证通过
				HttpSession session = request.getSession();
				session.setAttribute("session_userinfo",user);
				//跳转到主页面
				dispatcher = request.getRequestDispatcher("/index.jsp");
			}
			else
			{
				System.out.println("err");
				dispatcher = request.getRequestDispatcher("/login.html");
			}
			dispatcher.forward(request,response);
		} 
		catch (InstantiationException e) {e.printStackTrace();}
		catch (IllegalAccessException e) {e.printStackTrace();}
		catch (ClassNotFoundException e) {e.printStackTrace();}
		
//		String addUser = request.getParameter("user");
//		String addPwd = request.getParameter("pwd");
//		String addPurview = request.getParameter("purview");
		
		
	}
	
	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		doGet(request,response);
	}

	public void init() throws ServletException {
		// Put your code here
	}

}