时间的比较

 import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class TimeMinus {

 public String operateTime(String date,String etime)
 {
  try
  {
   String[] str=etime.split(":");
   String s=str[0];
   Date today=new Date();
   SimpleDateFormat df=new SimpleDateFormat("yy-mm-dd");
   Date d=df.parse(date);
   long diff=d.getTime()-today.getTime();
   String day1=String.valueOf(diff/(24*60*60*1000));
   int day=Integer.parseInt(day1);
   String hour1=String.valueOf((diff/(60*60*1000)-Long.parseLong(day1)*24));
   int h=Integer.parseInt(hour1)+Integer.parseInt(s);
   if(h>24)
   {
    h-=24;
    day+=1;
   }
   String hour=String.valueOf(h);
   return day+"天"+hour+"小时";
  } catch (ParseException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   return null;
  }
 }
 public boolean isLater(Date d)
 {
  Date today =new Date();
  long diff=today.getTime()-d.getTime();
  if(diff<300000)
   return true;
  else return false;
 }
}

 

 

body中：

 <%
             com.lhkj.dao.TimeMinus tm=new com.lhkj.dao.TimeMinus();
             String star=ld.getLawDocuments().getPublicDateStar().toString().substring(0,19);
             if(tm.isLater(ld.getLawDocuments().getPublicDateStar()))
             {
             %>
             <font color="red"><%out.print(star);}else{%></font>
             <font color="black"><%out.print(star);}%></font>
             </td>
             <td width="10%" align="left" style="padding-left:15px" class="line">
             <%
             String endTime=ld.getLawDocuments().getEndTime();
             String eTime=ld.getLawDocuments().getPublicDateEnd().toString().substring(0,11);
             String str=tm.operateTime(eTime,endTime);
             String[] day=str.split("天");
             int index=day[1].lastIndexOf("小时");
             int hour=Integer.parseInt(day[1].substring(0,index));
             if(Integer.parseInt(day[0])==0)
             {
             if(hour<0)
             {
             %><font color="green">已过期</font>
             <%}else{
           
              %>
              <font color=red><%=day[1]%></font>
             <%}}
             else if(Integer.parseInt(day[0])<0)
             {
             %><font color="green">已过期</font>
             <%}
             else{ %>
             <%out.print(str); %>
             <%}%>
             </td>