listclasses.java

jsp例程

package business;

import hibernate.Classes;

import java.util.Iterator;
import java.util.List;
import dao.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspWriter;

public class ListClasses {
	private ClassesDAO claDao;

	public ClassesDAO getClaDao() {
		return claDao;
	}

	public void setClaDao(ClassesDAO claDao) {
		this.claDao = claDao;
	}
	public void list(HttpServletRequest request,JspWriter out) throws Exception
	{
	   String page=(String)request.getParameter("page");
	   if(page!=null)
	   {
		   
	   }else{
		   
	   }
	
	}
	public void listpage(HttpServletRequest request,JspWriter out,int page) throws Exception
	{
		String tea="",id="",tea_id="",cour="",cour_id="",room="",time="";
		List list=claDao.getClasses();
		if(list==null)
		{
			out.print("尚无班级信息");
			return;
		}
		int total=list.size();
		int count=0;
		Iterator it=list.iterator();
		Classes cla;
		while(count<(page-1)*5 && it.hasNext())
		{
			it.next();
			count++;
			
		}
		count=0;
		while(it.hasNext() && count<5)
		{
			cla=(Classes)it.next();
			id=cla.getId();
			tea=cla.getTeacher().getName();
			tea_id=cla.getTeacher().getId();
			cour=cla.getCourse().getId();
			cour_id=cla.getCourse().getName();
			room=cla.getRoomId();
			time=cla.getCourTime();
			out.print("<tr><td>"+id+"</td><td>"+tea+"</td><td>"+tea_id+"</td><td>"+cour+"</td><td>"+cour_id+"</td><td>"+room+"</td><td>"+time+"</td>");
			out.print("<td><a href=deletecasses.do?Classes_id="+cla.getId()+">删除</a></td>");
			out.print("<td><a href=updateclass.jsp?Classes_id="+cla.getId()+">编辑</a></td></tr>");
					
			
		}
		out.print("<tr><td colspan=5 align=center>");
		out.print("<table width=50% border=0 cellspacing=0><tr>");
		if((page-1)>0)
		{
			out.print("<td width=50% colspan='5'><a href=getclasses.jsp?page="+(page-1)+">上一页</a>  &nbsp;&nbsp;&nbsp;");
			
		}
		if((page-1)<(total/5))
		{
			out.print("<td width=50% colspan='5'><a href=getclasses.jsp?page="+(page-1)+">下一页</a></td>");
		}
	  
		
		
	}

}