菜鸟一只--|||求教：请问JSP中如何将年月日显示的下拉菜单的选择日期获得并是某个对象的Date类型数据获得？

Question

如何把下拉菜单显示的年月日，读到对象的一个date类型的私有数据？

Answer 1

使用SimpleDateFormat转换一下不行吗？

Answer 2

String str="2008-12-13";
Date date = new  Date() ;
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
date = dateFormat.parse(str);
是这个意思不？

Answer 3

是的，就是把下拉菜单显示的年，月，日，赋给一个Date类型的数据，JSP页面上下拉菜单的值应该怎么读入呢？

Answer 4

这是一个js的日历控件  不知道对你有没有用
js文件  date.jsfunction PopupCalendar(InstanceName)
{
 ///Global Tag
 this.instanceName=InstanceName;
 ///Properties
 this.separator="-"
 this.oBtnTodayTitle="Today"
 this.oBtnCancelTitle="Cancel"
 this.weekDaySting=new Array("S","M","T","W","T","F","S");
 this.monthSting=new Array("January","February","March","April","May","June","July","August","September","October","November","December");
 this.Width=200;
 this.currDate=new Date();
 this.today=new Date();
 this.startYear=2000;
 this.endYear=2050;
 ///Css
 this.divBorderCss="1px solid #BCD0DE";
 this.tableBorderColor="#CCCCCC"
 ///Method
 this.Init=CalendarInit;
 this.Fill=CalendarFill;
 this.Refresh=CalendarRefresh;
 this.Restore=CalendarRestore;
 ///HTMLObject
 this.oTaget=null;
 this.oPreviousCell=null;
 this.sDIVID=InstanceName+"oDiv";
 this.sTABLEID=InstanceName+"oTable";
 this.sMONTHID=InstanceName+"oMonth";
 this.sYEARID=InstanceName+"oYear";
 
}
function CalendarInit()    ///Create panel
{
 var sMonth,sYear
 sMonth=this.currDate.getMonth();
 sYear=this.currDate.getYear();
 htmlAll="<div id='"+this.sDIVID+"' style='display:none;position:absolute;width:"+this.Width+";border:"+this.divBorderCss+";padding:2px;background-color:#FFFFFF'>";
 htmlAll+="<div align='center'>";
 /// Month
 htmloMonth="<select id='"+this.sMONTHID+"' onchange=CalendarMonthChange("+this.instanceName+") style='width:50%'>";
 for(i=0;i<12;i++)
 {   
  htmloMonth+="<option value='"+i+"'>"+this.monthSting[i]+"</option>";
 }
 htmloMonth+="</select>";
 /// Year
 htmloYear="<select id='"+this.sYEARID+"' onchange=CalendarYearChange("+this.instanceName+") style='width:50%'>";
 for(i=this.startYear;i<=this.endYear;i++)
 {
  htmloYear+="<option value='"+i+"'>"+i+"</option>";
 }
 htmloYear+="</select></div>";
 /// Day
 htmloDayTable="<table id='"+this.sTABLEID+"' width='100%' border=0 cellpadding=0 cellspacing=1 bgcolor='"+this.tableBorderColor+"'>";
 htmloDayTable+="<tbody bgcolor='#ffffff'style='font-size:13px'>";
 for(i=0;i<=6;i++)
 {
  if(i==0)
   htmloDayTable+="<tr bgcolor='#98B8CD'>";
  else
   htmloDayTable+="<tr>";
  for(j=0;j<7;j++)
  {   if(i==0)
   {
    htmloDayTable+="<td height='20' align='center' valign='middle' style='cursor:hand'>";
    htmloDayTable+=this.weekDaySting[j]+"</td>"
   }
   else
   {
    htmloDayTable+="<td height='20' align='center' valign='middle' style='cursor:hand'";
    htmloDayTable+=" onmouseover=CalendarCellsMsOver("+this.instanceName+")";
    htmloDayTable+=" onmouseout=CalendarCellsMsOut("+this.instanceName+")";
    htmloDayTable+=" onclick=CalendarCellsClick(this,"+this.instanceName+")>";
    htmloDayTable+="&nbsp;</td>"
   }
  }
  htmloDayTable+="</tr>"; 
 }
 htmloDayTable+="</tbody></table>";
 /// Today Button
 htmloButton="<div align='center' style='padding:3px'>"
 htmloButton+="<button style='width:40%;border:1px solid #BCD0DE;background-color:#eeeeee;cursor:hand'"
 htmloButton+=" onclick=CalendarTodayClick("+this.instanceName+")>"+this.oBtnTodayTitle+"</button>&nbsp;"
 htmloButton+="<button style='width:40%;border:1px solid #BCD0DE;background-color:#eeeeee;cursor:hand'"
 htmloButton+=" onclick=CalendarCancel("+this.instanceName+")>"+this.oBtnCancelTitle+"</button> "
 htmloButton+="</div>"
 /// All
 htmlAll=htmlAll+htmloMonth+htmloYear+htmloDayTable+htmloButton+"</div>";
 document.write(htmlAll);
 this.Fill(); 
}
function CalendarFill()   ///
{
 var sMonth,sYear,sWeekDay,sToday,oTable,currRow,MaxDay,sDaySn,sIndex,rowIndex,cellIndex,oSelectMonth,oSelectYear
 sMonth=this.currDate.getMonth();
 sYear=this.currDate.getYear();
 sWeekDay=(new Date(sYear,sMonth,1)).getDay();
 sToday=this.currDate.getDate();
 oTable=document.all[this.sTABLEID];
 currRow=oTable.rows[1];
 MaxDay=CalendarGetMaxDay(sYear,sMonth);
 
 oSelectMonth=document.all[this.sMONTHID]
 oSelectMonth.selectedIndex=sMonth;
 oSelectYear=document.all[this.sYEARID]
 for(i=0;i<oSelectYear.length;i++)
 {
  if(parseInt(oSelectYear.options[i].value)==sYear)oSelectYear.selectedIndex=i;
 }
 ////
 for(sDaySn=1,sIndex=sWeekDay;sIndex<=6;sDaySn++,sIndex++)
 {  if(sDaySn==sToday)
  {
   currRow.cells[sIndex].innerHTML="<font color=red><i><b>"+sDaySn+"</b></i></font>";
   this.oPreviousCell=currRow.cells[sIndex];
  }
  else
  {
   currRow.cells[sIndex].innerHTML=sDaySn;
   currRow.cells[sIndex].style.color="#666666"; 
  }
  CalendarCellSetCss(0,currRow.cells[sIndex]);
 }
 for(rowIndex=2;rowIndex<=6;rowIndex++)
 {
  if(sDaySn>MaxDay)break;
  currRow=oTable.rows[rowIndex];
  for(cellIndex=0;cellIndex<currRow.cells.length;cellIndex++)
  {
   if(sDaySn==sToday)
   {
    currRow.cells[cellIndex].innerHTML="<font color=red><i><b>"+sDaySn+"</b></i></font>";
    this.oPreviousCell=currRow.cells[cellIndex];
   }
   else
   {
    currRow.cells[cellIndex].innerHTML=sDaySn; 
    currRow.cells[cellIndex].style.color="#666666"; 
   }
   CalendarCellSetCss(0,currRow.cells[cellIndex]);
   sDaySn++;
   if(sDaySn>MaxDay)break; 
  }
 }
}
function CalendarRestore()     /// Clear Data
{ 
 var oTable
 oTable=document.all[this.sTABLEID]
 for(i=1;i<oTable.rows.length;i++)
 {
  for(j=0;j<oTable.rows[i].cells.length;j++)
  {
   CalendarCellSetCss(0,oTable.rows[i].cells[j]);
   oTable.rows[i].cells[j].innerHTML="&nbsp;";
  }
 } 
}
function CalendarRefresh(newDate)     ///
{
 this.currDate=newDate;
 this.Restore(); 
 this.Fill(); 
}
function CalendarCellsMsOver(oInstance)    /// Cell MouseOver
{
 var myCell
 myCell=event.srcElement;
 CalendarCellSetCss(0,oInstance.oPreviousCell);
 if(myCell)
 {
  CalendarCellSetCss(1,myCell);
  oInstance.oPreviousCell=myCell;
 }
}
function CalendarCellsMsOut(oInstance)    ////// Cell MouseOut
{
 var myCell
 myCell=event.srcElement;
 CalendarCellSetCss(0,myCell); 
}
function CalendarCellsClick(oCell,oInstance)
{
 var sDay,sMonth,sYear,newDate
 sYear=oInstance.currDate.getFullYear();
 sMonth=oInstance.currDate.getMonth();
 sDay=oInstance.currDate.getDate();
 if(oCell.innerText!=" ")
 {
  sDay=parseInt(oCell.innerText);
  if(sDay!=oInstance.currDate.getDate())
  {
   newDate=new Date(sYear,sMonth,sDay);
   oInstance.Refresh(newDate);
  }
 }
 sDateString=sYear+oInstance.separator+CalendarDblNum(sMonth+1)+oInstance.separator+CalendarDblNum(sDay);  ///return sDateString
 if(oInstance.oTaget.tagName=="INPUT")
 {
  oInstance.oTaget.value=sDateString;
 }
 document.all[oInstance.sDIVID].style.display="none";  
}
function CalendarYearChange(oInstance)    /// Year Change
{
 var sDay,sMonth,sYear,newDate
 sDay=oInstance.currDate.getDate();
 sMonth=oInstance.currDate.getMonth();
 sYear=document.all[oInstance.sYEARID].value
 newDate=new Date(sYear,sMonth,sDay);
 oInstance.Refresh(newDate);
}
function CalendarMonthChange(oInstance)    /// Month Change
{
 var sDay,sMonth,sYear,newDate
 sDay=oInstance.currDate.getDate();
 sMonth=document.all[oInstance.sMONTHID].value
 sYear=oInstance.currDate.getYear();
 newDate=new Date(sYear,sMonth,sDay);
 oInstance.Refresh(newDate); 
}
function CalendarTodayClick(oInstance)    /// "Today" button Change
{ 
 oInstance.Refresh(new Date());  
}

Answer 5

接上面的jsfunction getDateString(oInputSrc,oInstance)
{
 if(oInputSrc&&oInstance) 
 {
  CalendarDiv=document.all[oInstance.sDIVID];
  oInstance.oTaget=oInputSrc;
  CalendarDiv.style.pixelLeft=(CalendargetPos(oInputSrc,"Left")+135);
  CalendarDiv.style.pixelTop=CalendargetPos(oInputSrc,"Top");
  CalendarDiv.style.display=(CalendarDiv.style.display=="none")?"":"none";
 } 
}
function CalendarCellSetCss(sMode,oCell)   /// Set Cell Css
{
 // sMode
 // 0: OnMouserOut 1: OnMouseOver 
 if(sMode)
 {
  oCell.style.border="1px solid #5589AA";
  oCell.style.backgroundColor="#BCD0DE";
 }
 else
 {
  oCell.style.border="1px solid #FFFFFF";
  oCell.style.backgroundColor="#FFFFFF";
 } 
}
function CalendarGetMaxDay(nowYear,nowMonth)   /// Get MaxDay of current month
{
 var nextMonth,nextYear,currDate,nextDate,theMaxDay
 nextMonth=nowMonth+1;
 if(nextMonth>11)
 {
  nextYear=nowYear+1;
  nextMonth=0;
 }
 else 
 {
  nextYear=nowYear; 
 }
 currDate=new Date(nowYear,nowMonth,1);
 nextDate=new Date(nextYear,nextMonth,1);
 theMaxDay=(nextDate-currDate)/(24*60*60*1000);
 return theMaxDay;
}
function CalendargetPos(el,ePro)    /// Get Absolute Position
{
 var ePos=0;
 while(el!=null)
 {  
  ePos+=el["offset"+ePro];
  el=el.offsetParent;
 }
 return ePos;
}
function CalendarDblNum(num)
{
 if(num<10) 
  return "0"+num;
 else
  return num;
}
function CalendarCancel(oInstance)   ///Cancel
{
 CalendarDiv=document.all[oInstance.sDIVID];
 CalendarDiv.style.display="none";  
}

Answer 6

html文件 Calendar.htm<html>
<script language=javascript src="date.js"></script>
<script>
var oCalendarChs=new PopupCalendar("oCalendarChs"); //初始化控件时,请给出实例名称:oCalendarChs
oCalendarChs.weekDaySting=new Array("日","一","二","三","四","五","六");
oCalendarChs.monthSting=new Array("一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月");
oCalendarChs.oBtnTodayTitle="今天";
oCalendarChs.oBtnCancelTitle="取消";
oCalendarChs.Init();
</script>
<table>
<tr>
<td>
<input readonly type="text" name="birthday" onclick="getDateString(this,oCalendarChs)" value="1987-11-22" size="15">
</td>
</tr>
</table>
</html>