adminservlet.java

来自「精通NetBeans光盘源代码,很好很好的资料」· Java 代码 · 共 113 行

/*
 * AdminServlet.java
 *
 * Created on 2006年5月18日, 下午9:16
 */

package org.netbeans.web;

import java.io.*;
import java.net.*;
import java.util.Vector;

import javax.servlet.*;
import javax.servlet.http.*;

/**
 *
 * @author boyingking
 * @version
 */
public class AdminServlet extends HttpServlet {
    
    /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=gb2312");
        request.setCharacterEncoding("gb2312");
        HttpSession session=request.getSession();
        Vector vec=new Vector();
        AdminDataBaseBean database= new AdminDataBaseBean();
        String action=request.getParameter("action").trim();//获取action属性的值
        if(action.equals("login")){//用户点击了“提交”按钮
            String username=request.getParameter("username").trim();
            String password=request.getParameter("password").trim();
            boolean login=database.adminLogin(username,password);//查看是否通过验证
            if(login){
                vec=database.getAllProduct();
                session.setAttribute("showresult",vec);
                session.setAttribute("adminname",username);
                this.forward(request,response,"showadddelete.jsp");
            }else{
                session.setAttribute("notlogin","loginfail");
                this.forward(request,response,"login.jsp");
            }
        } else if(action.equals("delete")){//用户按下了“删除”链接
            String id=request.getParameter("productId");
            String pageno=request.getParameter("pageno");
            System.out.println(id);
            database.deleteProduct(id);
            vec=database.getAllProduct();
            session.setAttribute("showresult",vec);
            this.forward(request,response,"showadddelete.jsp?pageno="+pageno);
        }else if(action.equals("next")){//用户按下了“下一页”链接
            String pageno=request.getParameter("pageno");
            this.forward(request,response,"showadddelete.jsp?pageno="+pageno);
        }else if(action.equals("previous")){//用户按下了“上一页”链接
            String pageno=request.getParameter("pageno");
            this.forward(request,response,"showadddelete.jsp?pageno="+pageno);
        }else if(action.equals("add")){//用户按下了“添加新商品”链接
            this.forward(request,response,"addproduct.jsp");
        }else if(action.equals("addproduct")){//用户点击了“添加”按钮
            String id=request.getParameter("productId");
            String name=request.getParameter("productName");
            String price=request.getParameter("productPrice");
            String num=request.getParameter("productNum");
            String describe=request.getParameter("productDescribe");
            int line=database.addProduct(id,name,price,num,describe);
            if(line==1){//更新的记录数为1，则表明添加成功
                session.setAttribute("insert","ok");
                vec=database.getAllProduct();
                session.setAttribute("showresult",vec);
            }else{
                session.setAttribute("insert","notok");
            }
            this.forward(request,response,"addproduct.jsp");
        }else if(action.equals("showadddelete")){//用户按下了“查看已有商品”链接
            this.forward(request,response,"showadddelete.jsp");
        }
    }
    protected void forward(HttpServletRequest request,HttpServletResponse response,String url) throws ServletException,IOException {
        RequestDispatcher dispatcher = request.getRequestDispatcher(url);
        dispatcher.forward(request, response);
    }
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /** Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }
    
    /** Returns a short description of the servlet.
     */
    public String getServletInfo() {
        return "Short description";
    }
    // </editor-fold>
}