package?com.pc.controller;

import?java.io.IOException;
import?java.io.PrintWriter;
import?java.util.ArrayList;

import?javax.servlet.ServletException;
import?javax.servlet.http.HttpServlet;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;

import?com.pc.domain.Book;
import?com.pc.domain.Users;
import?com.pc.service.BookService;
import?com.pc.service.MyCart;
import?com.pc.service.UsersService;
/**
?*?
?*?@author?Switch
?*?功能：在跳轉購物大廳時進行處理
?*
?*/
public?class?GoHallUI?extends?HttpServlet?{

	public?void?doGet（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
		//?字符編碼
		request.setCharacterEncoding（“utf-8“）;
		response.setContentType（“text/html;charset=utf-8“）;
		response.setCharacterEncoding（“utf-8“）;
		
		
		//?先判斷該用戶是否已經登錄
		if（request.getSession（）.getAttribute（“loginUser“）?!=?null）{
			//?創建BookService對象
			BookService?bookService?=?new?BookService（）;
			ArrayList?books?=?bookService.getAllBook（）;
								
			//?將books放入request
			request.setAttribute（“books“?books）;
			request.getRequestDispatcher（“/WEB-INF/hall.jsp“）.forward（request?response）;
			return?;
		}
		
		
		
		
		
		//?得到從登錄頁面傳遞來的用戶名和密碼
		String?userId?=?request.getParameter（“userid“）;
		String?password?=?request.getParameter（“password“）;
		
		//?測試
		//?System.out.println（userId?+?“?“?+?password）;
		
		//?創建Users對象
		Users?user?=?new?Users（）;
		try{
			//?如果userId不為數字
			user.setId（Integer.parseInt（userId））;
		}?catch?（NumberFormatException?e）?{
			request.setAttribute（“err“?“用戶ID只能為數字“）;
			request.getRequestDispatcher（“/WEB-INF/login.jsp“）.forward（request?response）;
			return;
		}?
		user.setPwd（password）;
		
		//?創建UsersService對象
		UsersService?usersService?=?new?UsersService（）;
		
		//?在UsersService驗證用戶是否合法
		if（usersService.checkUser（user））{
			//?成功，跳轉到購物大廳
			
			//?因為其他頁面可能使用到用戶信息，所以將用戶信息存入session
			request.getSession（）.setAttribute（“loginUser“?user）;
			
			//?創建BookService對象
			BookService?bookService?=?new?BookService（）;
			ArrayList?books?=?bookService.getAllBook（）;
			
			//?創建一個購物車
			MyCart?myCart?=?new?MyCart（）;
			request.getSession（）.setAttribute（“myCart“?myCart）;
			
			//?將books放入request
			request.setAttribute（“books“?books）;
			request.getRequestDispatcher（“/WEB-INF/hall.jsp“）.forward（request?response）;
			
		}?else?{
			//?失敗，返回原頁面
			request.getRequestDispatcher（“/WEB-INF/login.jsp“）.forward（request?response）;
		}
		
	}

	public?void?doPost（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
		this.doGet（request?response）;
	}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-01-07?20:35??MyShoping\
?????文件?????????529??2016-01-07?20:35??MyShoping\.classpath
?????目錄???????????0??2016-01-09?15:07??MyShoping\.myeclipse\
?????文件?????????300??2016-01-07?20:35??MyShoping\.mymetadata
?????文件????????1752??2016-01-07?20:44??MyShoping\.project
?????目錄???????????0??2016-01-07?20:38??MyShoping\.settings\
?????文件?????????500??2016-01-07?20:35??MyShoping\.settings\.jsdtscope
?????文件?????????109??2016-01-07?20:47??MyShoping\.settings\org.eclipse.core.resources.prefs
?????文件?????????364??2016-01-07?20:35??MyShoping\.settings\org.eclipse.jdt.core.prefs
?????文件?????????465??2016-01-07?20:35??MyShoping\.settings\org.eclipse.wst.common.component
?????文件?????????252??2016-01-07?20:35??MyShoping\.settings\org.eclipse.wst.common.project.facet.core.xml
?????文件??????????49??2016-01-07?20:35??MyShoping\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2016-01-07?20:35??MyShoping\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????目錄???????????0??2016-01-08?19:34??MyShoping\WebRoot\
?????目錄???????????0??2016-01-07?20:35??MyShoping\WebRoot\meta-INF\
?????文件??????????36??2016-01-07?20:35??MyShoping\WebRoot\meta-INF\MANIFEST.MF
?????目錄???????????0??2016-01-08?21:08??MyShoping\WebRoot\WEB-INF\
?????目錄???????????0??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\
?????目錄???????????0??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\
?????目錄???????????0??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\
?????目錄???????????0??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\controller\
?????文件????????2960??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\controller\GoHallUI.class
?????文件????????2014??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\controller\GoMyOrderServlet.class
?????文件????????1942??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\controller\GoShowMyCart.class
?????文件????????3016??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\controller\ShoppingClServlet.class
?????文件????????2020??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\controller\SubmitOrderServlet.class
?????目錄???????????0??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\domain\
?????文件????????1702??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\domain\Book.class
?????文件????????1439??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\domain\Users.class
?????目錄???????????0??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\service\
?????文件????????2064??2016-01-09?15:06??MyShoping\WebRoot\WEB-INF\classes\com\pc\service\BookService.class
............此處省略38個文件信息