//這是一個控制器，主要完成對用戶身份的驗證
//控制器本身是不會去完成業務邏輯，它主要是去調用model類中的相應方法，完成對數據的處理
//控制器選擇具體的模型進行調用。
package?com.zty.controller;

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

import?com.zty.model.*;

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

public?class?loginCLServlet?extends?HttpServlet?{

	/**
	?*?The?doGet?method?of?the?servlet.?

	?*
	?*?This?method?is?called?when?a?form?has?its?tag?value?method?equals?to?get.
	?*?
	?*?@param?request?the?request?send?by?the?client?to?the?server
	?*?@param?response?the?response?send?by?the?server?to?the?client
	?*?@throws?ServletException?if?an?error?occurred
	?*?@throws?IOException?if?an?error?occurred
	?*/
	public?void?doGet（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
//得到用戶名和密碼從login。jsp頁面得到用戶名及密碼
	String?u=request.getParameter（“username“）;
	u=tools.getNewString（u）;
	//u=new?String（u.getBytes（“iso-8859-1“）“gb2312“）;
	String?p=request.getParameter（“password“）;
	//System.out.println（“u=“+u+“P=“+p）;
	//使用模型完成對用戶的驗證——創建userBeanCl對象，調用方法
	//1.創建userBeanCl對象，引包
	userBeanCl?ubc=new?userBeanCl（）;
	
	//2.調用方法
	if（ubc.checkUser（u?p））{
		
		//合法
		//在跳轉到wel.jsp頁面時，要顯示數據給wel.jsp頁面，將要顯示的數據準備好
		//ArrayList?al=ubc.getUsersByPage（1）;
		//int?pageCount=ubc.getPageCount（）;
		//int?grade=ubc.getUserGrade（u）;
		//怎樣將準備好的數據（al、pagecount）傳到下一頁面。
		//將al和pageCount放入request中。
		//request.setAttribute（“result“?al）;
		//request.setAttribute（“pageCount“?pageCount+““）;
		//request.setAttribute（“grade“?grade+““）;
		//request.setAttribute（“pageNow“?“1“）;
		//將用戶名放入session以備后用。
		request.getSession（）.setAttribute（“myname“?u）;
		//這種跳轉方法稱之為轉向，這種方法跳轉的效率不高
		//response.sendRedirect（“wel.jsp?user=“+u）;
		//所以常選用轉發的方法效率高并且request中的內容在，還可在下一頁面使用
		
		request.getRequestDispatcher（“main.jsp“）.forward（request?response）;
	}else{
		//不合法
	???//?response.sendRedirect（“login.jsp“）;
		request.getRequestDispatcher（“login.jsp“）.forward（request?response）;
	}
		
	}

	/**
	?*?The?doPost?method?of?the?servlet.?

	?*
	?*?This?method?is?called?when?a?form?has?its?tag?value?method?equals?to?post.
	?*?
	?*?@param?request?the?request?send?by?the?client?to?the?server
	?*?@param?response?the?response?send?by?the?server?to?the?client
	?*?@throws?ServletException?if?an?error?occurred
	?*?@throws?IOException?if?an?error?occurred
	?*/
	public?void?doPost（HttpServletRequest?request?HttpServletResponse?response）
			throws?ServletException?IOException?{
????????//合二為一
		this.doGet（request?response）;
		
	}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-12-15?14:36??userManageSys\
?????文件?????????529??2017-06-09?11:25??userManageSys\.classpath
?????文件?????????312??2017-12-15?14:36??userManageSys\.mymetadata
?????文件????????1756??2017-06-09?11:25??userManageSys\.project
?????目錄???????????0??2017-12-15?14:36??userManageSys\.settings\
?????文件?????????658??2017-06-11?10:33??userManageSys\.settings\.jsdtscope
?????文件?????????163??2017-06-11?10:33??userManageSys\.settings\org.eclipse.wst.common.project.facet.core.xml
?????文件??????????49??2017-06-11?10:33??userManageSys\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2017-06-11?10:33??userManageSys\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????目錄???????????0??2017-12-15?14:36??userManageSys\src\
?????目錄???????????0??2017-12-15?14:36??userManageSys\src\com\
?????目錄???????????0??2017-12-15?14:36??userManageSys\src\com\zty\
?????目錄???????????0??2017-12-15?14:36??userManageSys\src\com\zty\controller\
?????文件????????3002??2017-07-03?22:48??userManageSys\src\com\zty\controller\loginCLServlet.java
?????文件????????4500??2017-07-03?22:48??userManageSys\src\com\zty\controller\usersClServlet.java
?????目錄???????????0??2017-12-15?14:36??userManageSys\src\com\zty\model\
?????文件?????????771??2017-07-03?22:42??userManageSys\src\com\zty\model\connDB.java
?????文件?????????310??2017-07-03?22:42??userManageSys\src\com\zty\model\tools.java
?????文件?????????876??2017-07-03?22:42??userManageSys\src\com\zty\model\userBean.java
?????文件????????7099??2017-07-03?22:42??userManageSys\src\com\zty\model\userBeanCl.java
?????目錄???????????0??2017-12-15?14:37??userManageSys\WebRoot\
?????文件????????1742??2017-12-15?15:08??userManageSys\WebRoot\addUser.jsp
?????文件????????1192??2017-12-15?14:41??userManageSys\WebRoot\err.jsp
?????文件????????2087??2017-12-15?15:06??userManageSys\WebRoot\findsuc.jsp
?????文件????????1521??2017-12-15?15:06??userManageSys\WebRoot\findUser.jsp
?????目錄???????????0??2017-12-15?14:52??userManageSys\WebRoot\imgs\
?????文件???????20501??2017-06-09?11:25??userManageSys\WebRoot\imgs\1.GIF
?????文件????????8204??2010-04-11?20:36??userManageSys\WebRoot\imgs\10.png
?????文件???????17340??2010-04-11?20:36??userManageSys\WebRoot\imgs\11?.gif
?????文件???????23174??2010-04-11?20:36??userManageSys\WebRoot\imgs\12.gif
?????文件???????22933??2010-04-11?20:34??userManageSys\WebRoot\imgs\2.gif
............此處省略43個文件信息