1、在全局定义一个变量:

  #set($varName = "")

2、拼接字符串病截取字符串:

  #foreach( $role in $adminUser.roles)
    #set($varName=$varName+$role.roleName+",")
  #end
    #set($varName=$varName.substring(0,$varName.lastIndexOf(',')))
    $varName

04-15 05:39