你可以将请求主体对象引用到请求范围的Bean。然后将该请求范围的Bean注入你的异常处理程序中以检索请求主体（或你希望引用的其他请求上下文Bean）。
// @Component
// @Scope("request")
@ManagedBean
@RequestScope
public class RequestContext {
// fields, getters, and setters for request-scoped beans
}
@RestController
@RequestMapping("/api/v1/persons")
public class PersonController {
@Inject
private RequestContext requestContext;
@Inject
private PersonService personService;
@PostMapping
public Person savePerson(@RequestBody Person person) throws PersonServiceException {
requestContext.setRequestBody(person);
return personService.save(person);
}
}
@ControllerAdvice
public class ExceptionMapper {
@Inject
private RequestContext requestContext;
@ExceptionHandler(PersonServiceException.class)
protected ResponseEntity<?> onPersonServiceException(PersonServiceException exception) {
Object requestBody = requestContext.getRequestBody();
// ...
return responseEntity;
}
}
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