80e466df0f89001d1b9795c3f0ce58e6

一个相对比较简单的留言簿！功能还比较齐全！

package com.pure35.servlet;

import java.io.IOException;



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

import com.pure35.database.MessageDao;

public class DeleteMessage extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * 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 {

		this.doPost(request, response);
	}

	/**
	 * 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 {

//		得到要修改留言的ID 该id是由用户单击“修改”连接时
		//<a href='UpateMessage?id=message.getId()' >删除</a>得到的
		String mid=request.getParameter("id");
		int id=Integer.parseInt(mid);
		//通过得到的id查询  删除该留言的详细信息 
		String sql="delete from message where id="+id;
		MessageDao mdao=new MessageDao();
		mdao.updateMessage(sql);
		
		
		//跳转到留言显示页面
		request.getRequestDispatcher("ShowMessage").forward(request, response);
		
		
	}

}