src/com/servlet/leimuServlet.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.util.*;
import java.util.List;
import java.sql.ResultSet;

public class leimuServlet 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")){//类目添加
			insertM(request, response);
		}else if(method.equals("list")){//类目列表
			ListM(request, response);
		}else if(method.equals("delete")){//类目删除
			deleteM(request, response);
		}else if(method.equals("modifyindex")){//类目修改页面
			modifyIndex(request, response);
		}
		else if(method.equals("modify")){//类目修改
			modifyM(request, response);
		}else if(method.equals("detail")){//类目详细信息
			detailM(request, response);
		}else if(method.equals("Plist")){//类目列表信息
			PListM(request, response);
		}
	}
	private void insertM(HttpServletRequest request, HttpServletResponse response){//类目添加
		DBO db=new DBO();//初始化数据链接基础类
		String sql="";//sql语句初始化
			String keyid =(String)request.getParameter("keyid");//类目表主键
String lm=(String)request.getParameter("lm");//类目
String fz=(String)request.getParameter("fz");//分值
String lb=(String)request.getParameter("lb");//类别

		response.setCharacterEncoding("gb2312");
 		sql="insert into leimu(lm,fz,lb) values('"+lm+"','"+fz+"','"+lb+"')";
;//类目SQL 语句
		int row=1;
		try {
			row=db.update(sql);//执行sql语句 insert语句
			if(row==1){
			request.setAttribute("flag", "操作成功"); 
			}else{
			request.setAttribute("flag", "操作失败"); 
			}
			
			
			request.getRequestDispatcher("leimu/leimuadd.jsp").forward(request, response);
		} catch (Exception e) {