📄 gouwuredirect.jsp

📁 从一开始就使用动态提交技术

💻 JSP

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<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%@ page import="java.util.*" %>
<%@ page import="bookshop.bookBean" %>
<%! static int m=0;%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>
<body>
<jsp:useBean id="beanbook" scope="request" class="bookshop.BuyBook"/>
<%m++;
		Enumeration e = request.getParameterNames();
		String namereq=(String)(e.nextElement());
		System.out.println("namereq"+namereq);
   		 if("checkbox1".equals(namereq))
		 { 
		 	String[] get=request.getParameterValues("checkbox1");
			if(m>1)
			{
				Hashtable secondhash=(Hashtable)session.getAttribute("secondhash");
				Iterator iterator=secondhash.entrySet().iterator();
				while(iterator.hasNext())
				{
					Map.Entry entry=(Map.Entry)iterator.next();
					String bookid=(String)entry.getKey();
					int number=(Integer)entry.getValue();
					beanbook.addBook(bookid,number);
				}
			}
			for(int i=0;i<get.length;i++)
			{ beanbook.addBook(get[i],1);
			}
		 }
		 else if("tijiao".equals(namereq))
		 {
		 	String[] tnumber=request.getParameterValues("number");
			String[] bookid=request.getParameterValues("bookid");
			if(bookid.length>0)
			{
				for(int j=0;j<bookid.length;j++)
				{
					System.out.println("tnumber"+tnumber[j]);
					System.out.println("bookid"+bookid[j]);
					beanbook.modifyBook(bookid[j],new Integer(tnumber[j]));
				}
			}
		}
		 else if("del".equals(namereq))
		 {
			String[] del=request.getParameterValues("del");
			String[] bookbuyid=request.getParameterValues("bookbuyid");
			if(del.length>0)
			{System.out.println("delete number length:"+del.length);
			System.out.println("bookbuyid number length:"+bookbuyid.length);}
			for(int jj=0;jj<del.length;jj++)
				{
					System.out.println("del[jj]:"+del[jj]);
					beanbook.delBook(bookbuyid[jj]);
					
				}
		}
		Hashtable hash=(Hashtable)beanbook.listBooks();
		session.setAttribute("hash",hash);
		session.setAttribute("secondhash",hash);
		response.sendRedirect("gouwucar.jsp");
		%>
</body>
</html>

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