loginprocessor.java

一个简单的BBS论坛

package processor;



import java.util.Collection;

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

import com.bean.Person;
import com.bean.User;
import com.logic.PersonLogic;
import com.logic.UserLogic;


/*
 * 负责登录请求的助手类
 * */
public class LoginProcessor implements RequestProcessor{

	public String execute(HttpServletRequest request, HttpServletResponse response) {
		// TODO 自动生成方法存根
		
		//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:
			//创建员工业务对象
			PersonLogic personLogic = new PersonLogic();
			//查询所有员工信息
			Collection<Person> personlist = personLogic.findPersonAll();
			//把结果数据存入request对象中
			request.setAttribute("personlist", personlist);
			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)
		{
			viewpath = "main.jsp";
		}
		else
		{
			viewpath = "login.jsp";
		}
		
		//选择JSP视图，并返回给控制器
		return viewpath;
	}

}