www.pudn.com > SSPP.rar > Project.java

package edu.neu.sspp.servlet; 
 
import java.io.IOException; 
import java.util.List; 
 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
 
import edu.neu.sspp.StudentHandler; 
import edu.neu.sspp.hibernate.TTeacher; 
import edu.neu.sspp.hibernate.TTeacherDAO; 
import edu.neu.sspp.hibernate.TUser; 
import edu.neu.sspp.hibernate.TUserDAO; 
 
public class Project extends HttpServlet { 
 
	/** 
	 * Constructor of the object. 
	 */ 
	public Project() { 
		super(); 
	} 
 
	/** 
	 * Destruction of the servlet. 
 
	 */ 
	public void destroy() { 
		super.destroy(); // Just puts "destroy" string in log 
		// Put your code here 
	} 
 
	/** 
	 * 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 { 
 
		//通过URL获取用户名 
		String userName = request.getParameter("name"); 
		 
		TUserDAO userDAO = new TUserDAO(); 
		List userList = userDAO.findByUserName(userName); 
		if(!userList.isEmpty()) { 
			TUser user = (TUser)userList.get(0); 
			 
			request.setAttribute("userName", userName); 
			//在jsp页面中将userID与session中的id比较，防止用户篡改cookie或者请求 
			request.setAttribute("userID", user.getUserUid()); 
			request.setAttribute("nick", user.getNick()); 
 
			request.setAttribute("count", user.getCount()); 
			request.setAttribute("projects", user.getTProjects()); 
 
			//针对老师的代码 
			if(request.getSession().getAttribute("login") != null  
					&& request.getSession().getAttribute("login").equals("teacher")) { 
				TTeacherDAO teacherDAO = new TTeacherDAO(); 
				TTeacher teacher = teacherDAO.findById((String)request.getSession().getAttribute("id")); 
				 
				StudentHandler sh = new StudentHandler(teacher.getStudents()); 
				request.setAttribute("added", sh.studentAdded(userName)); 
			} 
			 
			//HibernateSessionFactory.closeSession(); 不能关,涉及懒读 
			 
			request.getRequestDispatcher("../proj_jsp/project.jsp").forward(request, response); 
			return; 
		} 
		else { 
			//should be better 
			response.getWriter().write("page not found"); 
		} 
	} 
 
	/** 
	 * 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 { 
		doGet(request, response); 
	} 
 
	/** 
	 * Initialization of the servlet. 
 
	 * 
	 * @throws ServletException if an error occure 
	 */ 
	public void init() throws ServletException { 
		// Put your code here 
	} 
 
}