src/com/servlet/liuyanServlet.java

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package com.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.bean.liuyan;
import com.dao.liuyanDao;


import java.util.List;
import java.sql.ResultSet;

public class liuyanServlet extends HttpServlet  {
	public void service(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException {
		request.setCharacterEncoding("gb2312");
		System.out.println("method"+request.getParameter("method"));
		String method=(String)request.getParameter("method");
		if(method.equals("insert")){//留言添加
			insertM(request, response);
		}else if(method.equals("list")){//留言列表
			ListM(request, response);
		}else if(method.equals("delete")){//留言删除
			deleteM(request, response);
		}else if(method.equals("modifyindex")){//留言修改页面
			modifyIndex(request, response);
		}
		else if(method.equals("modify")){//留言修改
			modifyM(request, response);
		}else if(method.equals("detail")){//留言详细信息
			detailM(request, response);
		}else if(method.equals("Plist")){//留言列表信息
			PListM(request, response);
		}
	}
	private void insertM(HttpServletRequest request, HttpServletResponse response){//留言添加
		liuyanDao dao=new liuyanDao();
		liuyan liuyan=new liuyan();
		liuyan.setLyid((String)request.getParameter("keyid"));
liuyan.setLy((String)request.getParameter("ly"));
liuyan.setSj((String)request.getParameter("sj"));
liuyan.setYh((String)request.getParameter("yh"));

	response.setCharacterEncoding("gb2312");
		try {
			dao.insert(liuyan);
			request.setAttribute("flag", "操作成功"); 
			
			
			
			request.getRequestDispatcher("liuyan/liuyanadd.jsp").forward(request, response);
		} catch (Exception e) {
			e.printStackTrace();
		}