velocity 注释语法

      (1)单行注释：   ## This is a single line comment. (2)多行注释：   #*    Thus begins a multi-line comment. Online visitors won’t    see this text because the Velocity Templating Engine will   ignore it.   *# (3)文档格式：   #**    This is a VTL comment block and    may be used to store such information   as the document author and versioning    information:    @version 1.1    @author  xiao      *#