uord.java

java web开发宝典源代码

package com.yxq.servlet;

import java.io.IOException;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.RequestDispatcher;
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.yxq.bean.SingleObject;

public class UorD extends HttpServlet {

	protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
		doPost(request,response);	
	}

	protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {
		RequestDispatcher rd=null;
		HttpSession session=request.getSession();
		HashMap bmap=(HashMap)session.getAttribute("bmap");
		String op=request.getParameter("op");
		if(op==null)op="";
		op=new String(op.getBytes("ISO-8859-1"),"gbk");
		
        /*** 购物车清空 ***/
		if(op.equals("deleteAll")){
			Map carmap=(HashMap)session.getAttribute("carmap");
			String args="";
			Collection c=carmap.values();
			Iterator it=c.iterator();
			args="?car_selected="+((SingleObject)it.next()).getId();
			while(it.hasNext()){
				args+="&";
				args+="car_selected="+((SingleObject)it.next()).getId();				
			}
			rd=request.getRequestDispatcher("/shop/delete"+args);
			rd.forward(request,response);
		}
		
		if(bmap!=null&&bmap.size()!=0){
			/*** 更新数量 ***/
			if((bmap.get(op)!=null)&&(bmap.get(op).equals("update"))){
				rd=request.getRequestDispatcher("/shop/update");
				rd.forward(request,response);
			}
            /*** 删除选中 ***/
			if((bmap.get(op)!=null)&&(bmap.get(op).equals("delete"))){
				rd=request.getRequestDispatcher("/shop/delete");
				rd.forward(request,response);
			}
		}
	}
}