[#1839]add ContentType return while getConfig

[wangweizZZ]

Please do not create a Pull Request without creating an issue first.

What is the purpose of the change

#1839

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[zongtanghu]

The CI test cases has failed, please check it.@wangwei

[wangweizZZ]

ci had passed .please help review this pr @zongtanghu @KomachiSion

[zongtanghu]

Please help to review this pr. @KomachiSion @chuntaojun