Solution: content type 'application/x-www-form-urlencoded; charset=UTF-8‘ not supported

Today, I encountered a problem when I was writing about the separation of front and back ends Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported Questions like this

reason ：

If Content-Type Set to “application/x-www-form-urlencoded;charset=UTF-8” Whether it's POST Request or GET Requests can be successfully obtained in this way , But if the front end POST In the request body yes Json Object words , Will report the above error .

If the front end is used json String parameters JSON.stringify() It can be used directly at the back end @PostMapping Accept

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