velocity 调用自定义方法，日期函数为例

toolbox.xml

<tool>
		<key>dateUtil</key>
		<scope>application</scope>
		<class>com.anxin.msapweb.util.DateUtil</class>
	</tool>

$!{dateUtil.getCurrDate_YYYY_MM_DD()}

日期函数

<tools>
   <toolbox scope="application">
     <tool class="org.apache.velocity.tools.generic.DateTool"
              format="yyyy-MM-dd"/>
   </toolbox>
 </tools>

注：若不可以添加（）
Example of formatting the "current" date:
  $date                         -> Oct 19, 2003 9:54:50 PM
  $date.long                    -> October 19, 2003 9:54:50 PM PDT
  $date.medium_time             -> 9:54:50 PM
  $date.full_date               -> Sunday, October 19, 2003
  $date.get('default','short')  -> Oct 19, 2003 9:54 PM
  $date.get('yyyy-M-d H:m:s')   -> 2003-10-19 21:54:50

Example of formatting an arbitrary date:
  $myDate                        -> Tue Oct 07 03:14:50 PDT 2003
  $date.format('medium',$myDate) -> Oct 7, 2003 3:14:50 AM