(1)判断null
#if( $name == null)
something code
#end
(2)判断null或者false
#if( !$name)
something code
#end
(3)判断null或者空字符串
#if( "$!name" == "")
something code
#end
转载:https://blog.youkuaiyun.com/coslay/article/details/46788009
该博客内容为转载链接,链接为https://blog.youkuaiyun.com/coslay/article/details/46788009 ,未包含其他关键信息技术信息。
(1)判断null
#if( $name == null)
something code
#end
(2)判断null或者false
#if( !$name)
something code
#end
(3)判断null或者空字符串
#if( "$!name" == "")
something code
#end
转载:https://blog.youkuaiyun.com/coslay/article/details/46788009

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