purchase.java

jsp+struct网上订票系统

package business;
import java.util.Iterator;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspWriter;
import dao.PurchaseDao;
import orm.Flight;
import orm.OrderItem;
public class Purchase {
	private PurchaseDao purchasedao;
	public PurchaseDao getPurchasedao(){
		return purchasedao;
	}
	public void setPurchasedao(PurchaseDao purchasedao)
	{
		this.purchasedao=purchasedao;
	}
	public void list(HttpServletRequest request,JspWriter out)
	throws Exception{
		String tmp=(String)request.getParameter("p_page");
		if(tmp!=null)
		{
			listpage(request,out,Integer.parseInt(tmp));
			
		}
		else
		{               
		listpage(request,out,1);
		}
	}
	public void listpage(HttpServletRequest request,JspWriter out,int page)
	throws Exception{
		List list=purchasedao.getAllFlights();
		if(list==null)
		{
			out.print("没有可售的机票");
			return;
			
		}
		
		int total=list.size();
		int count=0;
		Iterator it=list.iterator();
		OrderItem item=null;
		Flight flight;
		int totalpage=0;
		totalpage=total/5;
		if(total>totalpage*5)
		{
			totalpage++;
		}
		while(count<(page-1)*5&&it.hasNext())
			
		{
			it.next();
			count++;
		}
		count=0;
		out.print(" <table width=90% border=5 cellspacing=0 cellpadding=0>"+
            "<tr bgcolor=#0099FF>"+
    "<td width=10%>航班号</td>"+
    "<td width=10% >出发地点</td>"+
    "<td width=10% >到达地点</td>"+
    "<td width=15%>出发日期</td>"+
    "<td width=15%>出发时间</td>"+
    "<td width=10%>价格</td>"+
    "<td width=10%>可售机票</td>"+
    "<td width=20%>预定</td>"+
               "</tr>" 
				);
		while(it.hasNext()&&count<5){
			item=(OrderItem)it.next();
		  flight=(Flight)item.getFlight();
		out.print("<tr>"+
	    "<td>"+flight.getFlight_no()+"</td>"+
	    "<td>"+flight.getStart_place()+"</td>"+
	    "<td>"+flight.getEnd_place()+"</td>"+
	    "<td>"+item.getDate()+"</td>"+
	    "<td>"+flight.getstarttime()+"</td>"+
	    "<td>"+flight.getPrice()+"</td>");
		if(item.getFcount()<=0)
		{
			out.print( "<td>缺票</td>");
			out.print("<td>缺票 </td>");
			out.print("</tr>");
		}
		else
		{
			out.print( "<td>"+item.getFcount()+"</td>");
			out.print("<td><a href=/tikects/Purchase.do?orderitem_id="+item.getId()+">放到购物车</a></td>");
			out.print("</tr>");
		}
			
		count++;
}
		out.print("<tr><td colspan=6 align=center>");
		out.print("<table width=50% border=0 cellspacing=0><tr>");
		if((page-1) > 0)
			out.print("<td width=50%><a href=/tikects/view/purchase.jsp?p_page="+(page-1)+">上一页</a></td>");
		else
			out.print("<td width=50%>上一页</td>");
		if((page-1) < (totalpage-1))
			out.print("<td width=50%><a href=/tikects/view/purchase.jsp?p_page="+(page+1)+">下一页</a></td>");
		else
			out.print("<td width=50%>下一页</td>");
		out.print("</tr></table></td></tr>");
		out.print("</table>");
	
	}
}