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

package edu.neu.sspp.servlet.user; 
 
import java.io.IOException; 
 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
 
import org.hibernate.Transaction; 
 
import edu.neu.sspp.SSPPLogger; 
import edu.neu.sspp.hibernate.HibernateSessionFactory; 
import edu.neu.sspp.hibernate.TComment; 
import edu.neu.sspp.hibernate.TCommentDAO; 
import edu.neu.sspp.hibernate.TProject; 
 
public class DeleteComment extends HttpServlet { 
 
	/** 
	 * Constructor of the object. 
	 */ 
	public DeleteComment() { 
		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 { 
 
		TCommentDAO commentDAO = new TCommentDAO(); 
		TComment comment = commentDAO.findById(request.getParameter("cID")); 
		 
		TProject project = comment.getTProject(); 
		 
		if(!project.getTUser().getUserUid().equals(request.getSession().getAttribute("id"))) { 
			SSPPLogger.logWarn("用户越权操作" + "IP:" + request.getRemoteAddr()); 
			 
			response.sendRedirect(request.getContextPath() + "/error_page/error_500.jsp"); 
 
			return; 
		} 
 
		project.setCount(project.getCount() - 1); 
		 
		Transaction transaction = HibernateSessionFactory.getSession().beginTransaction(); 
	 
		commentDAO.delete(comment); 
 
		transaction.commit(); 
		 
		HibernateSessionFactory.closeSession(); 
		 
		SSPPLogger.logInfo(request.getParameter("name") + " 删除评论" + " IP:" + request.getRemoteAddr()); 
		 
		response.sendRedirect("../../" + request.getParameter("name") + "/" + project.getProjUid() + "#comment"); 
 
	} 
 
	/** 
	 * 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 
	} 
 
}