Required request body is missing: (cross domain problem)

Required request body is missing: Report errors

When using springboot Framework development projects , Start the program , When calling the back-end interface , Report errors

Required request body is missing:.

It could be yours controller layer , Didn't add @CrossOrigin （ Cross domain annotation ）, My problem is that there is no such annotation , Forgot to add , Suddenly I remember , After adding , The program can call the interface normally .