汉语是语言(language),汉文是记录汉语的文字(characters)，也叫"中文"。

Not really different actually...

汉语means Chinese !汉文means complex Chinese maybe .中古代用的文言文

This is the first time I see 汉文. We say 中文.

I think no matter used 語 or 文... it's the same fkin thing, what's the really important is 漢語 more effect 2 a Chinese man, like an Uighur... when we talk each other... we can using 漢語, cuz that's Han Chinese language, but in the world Chinese was only one to representative China, so formal name in Chinese it's 中文.