loginprocessor.java

一个简单的BBS论坛

package com.processor;




import java.util.ArrayList;

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

import com.logic.NoteLogic;
import com.logic.UserLogic;

import com.bean.Sort;
import com.bean.User;



public class LoginProcessor implements RequestProcessor{

	public String execute(HttpServletRequest request, HttpServletResponse response) {
		// TODO 自动生成方法存根
		
		/*
		 * 用户登录小助手
		 * */
		//接收客户端表单中文本框的值
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		
		//把数据封装在业务实体对象中
		User user = new User(username,password);
		
		//调用业务层
		UserLogic userLogic = new UserLogic();
		int result = userLogic.validateUser(user);
		
		
		boolean flag = false;
		String msg = "";
		switch(result)
		{
		case 0:

			flag = true;
			break;
		case 1:
			msg = "用户名不能为空！";
			break;
		case 2:
			msg = "密码不能为空！";
			break;
		case 3:
			msg = "登录失败！";
			break;
		}
		
		//把结果数据存入request对象中
		request.setAttribute("msg", msg);
		
		//JSP视图路径地址
		String viewpath = ""; 
		if(flag)
		{
			//向Session中存用户
			HttpSession session = request.getSession();
			session.setAttribute("username", username);
			NoteLogic noteLogic = new NoteLogic();
			ArrayList<Sort> sortlist = noteLogic.find();
			request.setAttribute("sortlist", sortlist);
			viewpath = "main.jsp";
		}
		else
		{
			viewpath = "bbsLogin.jsp";
		}
		
		//选择JSP视图，并返回给控制器
		return viewpath;
	}

}