tb_poll_action.java

这是一个Struts网上商城(图书)的管理系统源代码.

package com.bookshop.action;

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

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.bookshop.dao.bbs_dao;
import com.bookshop.dao.poll_dao;
import com.bookshop.dto.poll_dto;

public class tb_poll_action extends HttpServlet {

	/**
	 * 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 {

		request.setCharacterEncoding("gb2312");
		response.setContentType("text/html;charset=gb2312");
		doPost(request,response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {System.out.println("poll is running");
		request.setCharacterEncoding("gb2312");
		response.setContentType("text/html;charset=gb2312");
		PrintWriter out = response.getWriter();
		HttpSession session=request.getSession();
		String action=request.getParameter("action");
		//投票
		if(action!=null&&action.equals("send")){
			String optionname=request.getParameter("optionname");
			int n=new poll_dao().poll_select(optionname);
			
			request.getRequestDispatcher("tb_poll_action?action=detail").forward(request,response);
			
		}
		
		//投票详细页面
		if(action!=null&&action.equals("detail")){
			//网上调查
			ArrayList poll_list=new poll_dao().po_select();
			request.setAttribute("poll_list",poll_list);
			
			//公告信息
	 		ArrayList bbs_list=new bbs_dao().bbs_select();
	 		request.setAttribute("bbs_list",bbs_list);
			
	 		
			request.getRequestDispatcher("../poll_result.jsp").forward(request,response);
			
		}
		
		//后台定单管理
		if(action!=null&&action.equals("poll_manage")){
			String next="";
			if(session.getAttribute("admin")!=null){
				System.out.println("poll_manage is running");
				
				ArrayList poll_list=new poll_dao().po_select();
				request.setAttribute("poll_list",poll_list);
	            next="../manager/pollManage.jsp";
			}
			else
				 next="../manager/login_m.jsp";
			System.out.println(next);
            request.getRequestDispatcher(next).forward(request,response);
		}
		
		
		//添加投票项目
		if(action!=null&&action.equals("poll_add")){
			String next="";
			if(session.getAttribute("admin")!=null){
				System.out.println("poll_add is running");
				String optionname=request.getParameter("optionname");
			    int n=new poll_dao().add(optionname);
				
	            next="tb_poll_action?action=poll_manage";
			}
			else
				 next="../manager/login_m.jsp";
			System.out.println(next);
            request.getRequestDispatcher(next).forward(request,response);
		}
		
		
		//删除投票项目
		if(action!=null&&action.equals("poll_del")){
			String next="";
			if(session.getAttribute("admin")!=null){
				System.out.println("poll_del is running");
				
				String id=request.getParameter("id");
				poll_dto dto=new poll_dao().select(id);
				request.setAttribute("poll_del",dto);
	            next="../manager/poll_del.jsp";
			}
			else
				 next="../manager/login_m.jsp";
			System.out.println(next);
            request.getRequestDispatcher(next).forward(request,response);
		}
		
		//执行删除投票项目
		if(action!=null&&action.equals("poll_del_excute")){
			String next="";
			if(session.getAttribute("admin")!=null){
				System.out.println("poll_del_excute is running");
				
				String id=request.getParameter("id");
				
				 int n=new poll_dao().delete(id);
	            next="tb_poll_action?action=poll_manage";
			}
			else
				 next="../manager/login_m.jsp";
			System.out.println(next);
            request.getRequestDispatcher(next).forward(request,response);
		}
		
		out.flush();
		out.close();
	}

}