完整错误：Resolved[org.springframework.http.converter.HttpMessageNotReadableException:Requiredrequestbodyismissing:publicjava.lang.Objectcom.example.sx.study.Econtroller.test1(com.example.sx.study.Entity,org.springframework.validation.BindingResult)]解决办法：在@RequestBody后加上(required=false)虽然通过此方法的确返回了信息，但是还