managecomment.java

使用JSP+Servlet+Hibernate+Struts实现的一个学生软件发布平台

package edu.neu.sspp.servlet.admin;

import java.io.IOException;

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

import edu.neu.sspp.PageSeparator;
import edu.neu.sspp.hibernate.HibernateSessionFactory;
import edu.neu.sspp.hibernate.TCommentDAO;

public class ManageComment extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public ManageComment() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * 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 {

		handlePage(request);
		
		HibernateSessionFactory.closeSession();
		
		request.getRequestDispatcher("../../admin_page/m_comment.jsp").forward(request, response);
	}
	
	private void handlePage(HttpServletRequest request) {
		TCommentDAO commentDAO = new TCommentDAO();
		int count = commentDAO.getCount();
		
		PageSeparator ps = new PageSeparator(count, edu.neu.sspp.Constant.user_page_size);
		
		if(request.getParameter("page") == null) {
			try {
				ps.setCurrentPage(1);
			} catch (Exception e) {

			}
		}
		else {
			try {
				ps.setCurrentPage(Integer.parseInt(request.getParameter("page")));
			} catch (NumberFormatException e) {

			} catch (Exception e) {

			}
		}

		request.setAttribute("ps", ps);
		request.setAttribute("comments", commentDAO.getByPage(ps.getCurrentPageBegin(), ps.getCurrentPageCount()));
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * 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. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}