lanmuclservlet.java

MVC模式 jsp + servlet + bean 实现简单的用户管理系统

//这个控制器，将处理用户的分页显示，用户的删除，修改、添加...
package com.djj.controller;

import java.io.IOException;
import java.util.ArrayList;

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

import com.djj.model.*;
public class LanmuClServlet extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		
		//获得标识值
		String flag=request.getParameter("flag");
		
		//如果是要分页显示栏目信息
		if(flag.equals("fengye")){
				//得到用户希望显示的pageNow;
				try {
					int pageNow=Integer.parseInt(request.getParameter("pageNow"));
					//调用ActorBeanCl
					
					lanBeanCl abc = new lanBeanCl();
		//			在跳转到wel.jsp页面时，就把要显示的数据，给wel.jsp
					
					ArrayList al = abc.getLanmuByPage(pageNow);
					int pageCount=abc.getPageCount();
					//将al,pageCount,pageNow放入request中
					request.setAttribute("result", al);
					request.setAttribute("pageCount", pageCount+"");
					request.setAttribute("pageNow", pageNow+"");
					
					//重新调转回wel.jsp
					request.getRequestDispatcher("welLanmu.jsp").forward(request, response);
					
					
				} catch (Exception e) {
					e.printStackTrace();
					// TODO: handle exception
				}
		
		}else if(flag.equals("delLan")){
			
			
			//完成删除
			//1.得到要删除的用户的id
			 String lanName = Tools.getNewString(request.getParameter("lanName"));
			//创建UserBeanCl
			lanBeanCl ubc=new lanBeanCl();
			
			if(ubc.delLanByName(lanName)){
				
				//删除成功!
				
				request.getRequestDispatcher("suc.jsp").forward(request, response);
			}else{
				//不成功!
				request.getRequestDispatcher("err.jsp").forward(request, response);
			}
		}
//		else if(flag.equals("search")){
//			String username = request.getParameter("userName");
//			
//			UserBeanCl ubc=new UserBeanCl();
//			
//			ArrayList al=new ArrayList();
//			
//			al = ubc.selectUser(username);
//			
//			request.setAttribute("result", al);
//			
//			request.getRequestDispatcher("selectResult.jsp").forward(request, response);
//		}
		else if(flag.equals("addActor")){
			
			
			//完成添加角色
			//得到用户输入的信息
			String actorName=Tools.getNewString(request.getParameter("actorName"));
			String about=Tools.getNewString(request.getParameter("about"));
			int lever=Integer.parseInt(request.getParameter("lever"));
			
			//创建ActorBeanCl
			ActorBeanCl ubc=new ActorBeanCl();
			
			if(ubc.addActor(actorName, about, lever)){
				
				//添加成功!
				
				request.getRequestDispatcher("suc.jsp").forward(request, response);
			}
			else{
				//不成功!
				request.getRequestDispatcher("err.jsp").forward(request, response);
			}
		}else if(flag.equals("updateLan")){
			
			
			//完成更新用户
			//得到用户输入的信息
			String lanName=Tools.getNewString(request.getParameter("lanName"));
			String lanAbout=Tools.getNewString(request.getParameter("lanAbout"));
			String lanSort=Tools.getNewString(request.getParameter("lanSort"));
			String lanTemplate=request.getParameter("lanTemplate");
			String lanLever=request.getParameter("lanLever");
			
			//封装成user对象
			lanBean actor = new lanBean();
			actor.setLanName(lanName);
			actor.setLanAbout(lanAbout);
			actor.setLanSort(lanSort);
			actor.setLanTemplate(lanTemplate);
			actor.setLanLever(Integer.parseInt(lanLever));
			
			//创建UserBeanCl
			lanBeanCl ubc=new lanBeanCl();
			
			if(ubc.updateLan(actor)){
				
				//添加成功!
				
				request.getRequestDispatcher("suc.jsp").forward(request, response);
			}
			else{
				//不成功!
				request.getRequestDispatcher("err.jsp").forward(request, response);
			}
		}
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

	this.doGet(request, response);
	}

}