src/com/servlet/kemuServlet.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 kemuServlet 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")){//科目添加
			insertM(request, response);
		}else if(method.equals("list")){//科目列表
			ListM(request, response);
		}else if(method.equals("delete")){//科目删除
			deleteM(request, response);
		}else if(method.equals("modifyindex")){//科目修改页面
			modifyIndex(request, response);
		}
		else if(method.equals("modify")){//科目修改
			modifyM(request, response);
		}else if(method.equals("detail")){//科目详细信息
			detailM(request, response);
		}else if(method.equals("Plist")){//科目列表信息
			PListM(request, response);
		}
	}
	private void insertM(HttpServletRequest request, HttpServletResponse response){//科目添加
		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");//科目表主键
String km=(String)request.getParameter("km");//科目
String mf=(String)request.getParameter("mf");//满分

		response.setCharacterEncoding("gb2312");
 		sql="insert into kemu(km,mf) values('"+km+"','"+mf+"')";
;//科目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("kemu/kemuadd.jsp").forward(request, response);
		} catch (Exception e) {
			e.printStackTrace();