* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
- *
+ *
* http://www.apache.org/licenses/LICENSE-2.0
- *
+ *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/**
* Catches certain exceptions. This controller advice factors out try-catch
* blocks in many controller methods.
- *
+ *
* Also see:<br>
* https://www.baeldung.com/exception-handling-for-rest-with-spring
* https://www.springboottutorial.com/spring-boot-exception-handling-for-rest-services
@ControllerAdvice
public class CustomResponseEntityExceptionHandler extends ResponseEntityExceptionHandler {
- // Superclass has "logger" that is exposed here, so use a different name
- private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+ // Superclass has "logger" that is exposed here, so use a different name
+ private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
- /**
- * Logs the error and generates a JSON response when a REST controller method
- * takes a RestClientResponseException. This is thrown by the Http client when a
- * remote method returns a non-2xx code. All the controller methods are proxies
- * in that they just forward the request along to a remote system, so if that
- * remote system fails, return 502 plus some details about the failure, rather
- * than the generic 500 that Spring-Boot will return on an uncaught exception.
- *
- * Why 502? I quote: <blockquote>HTTP server received an invalid response from a
- * server it consulted when acting as a proxy or gateway.</blockquote>
- *
- * @param ex
- * The exception
- *
- * @param request
- * The original request
- *
- * @return A response entity with status code 502 plus some details in the body.
- */
- @ExceptionHandler({ RestClientResponseException.class })
- public final ResponseEntity<ErrorTransport> handleProxyMethodException(Exception ex, WebRequest request) {
- // Capture the full stack trace in the log.
- log.error("handleProxyMethodException: request {}, exception {}", request.getDescription(false), ex);
- if (ex instanceof HttpStatusCodeException) {
- HttpStatusCodeException hsce = (HttpStatusCodeException) ex;
- return new ResponseEntity<>(new ErrorTransport(hsce.getRawStatusCode(), hsce.getResponseBodyAsString(),
- ex.toString(), request.getDescription(false)), HttpStatus.BAD_GATEWAY);
- } else {
- return new ResponseEntity<>(new ErrorTransport(500, ex), HttpStatus.BAD_GATEWAY);
- }
- }
+ /**
+ * Logs the error and generates a JSON response when a REST controller method
+ * takes a RestClientResponseException. This is thrown by the Http client when a
+ * remote method returns a non-2xx code. All the controller methods are proxies
+ * in that they just forward the request along to a remote system, so if that
+ * remote system fails, return 502 plus some details about the failure, rather
+ * than the generic 500 that Spring-Boot will return on an uncaught exception.
+ *
+ * Why 502? I quote: <blockquote>HTTP server received an invalid response from a
+ * server it consulted when acting as a proxy or gateway.</blockquote>
+ *
+ * @param ex
+ * The exception
+ *
+ * @param request
+ * The original request
+ *
+ * @return A response entity with status code 502 plus some details in the body.
+ */
+ @ExceptionHandler({RestClientResponseException.class})
+ public final ResponseEntity<ErrorTransport> handleProxyMethodException(Exception ex, WebRequest request) {
+ // Capture the full stack trace in the log.
+ log.error("handleProxyMethodException: request {}, exception {}", request.getDescription(false), ex);
+ if (ex instanceof HttpStatusCodeException) {
+ HttpStatusCodeException hsce = (HttpStatusCodeException) ex;
+ return new ResponseEntity<>(new ErrorTransport(hsce.getRawStatusCode(), hsce.getResponseBodyAsString(),
+ ex.toString(), request.getDescription(false)), HttpStatus.BAD_GATEWAY);
+ } else {
+ return new ResponseEntity<>(new ErrorTransport(500, ex), HttpStatus.BAD_GATEWAY);
+ }
+ }
}