java mediatype utf-8_Java MediaType.APPLICATION_JSON_UTF8屬性代碼示例

/**

* Searches {@link org.springframework.web.bind.annotation.RequestMapping RequestMapping}

* annotation on the given method argument and extracts

* If RequestMapping annotation is not found, NoRequestMappingFoundException is thrown.

* {@link org.springframework.http.HttpMethod HttpMethod} type equivalent to

* {@link org.springframework.web.bind.annotation.RequestMethod RequestMethod} type

*

* @param element AnnotatedElement object to be examined.

* @return Mapping object

*/

Mapping extractMapping(AnnotatedElement element) {

Annotation annotation = findMappingAnnotation(element);

String[] urls;

RequestMethod requestMethod;

String consumes;

if (annotation instanceof RequestMapping) {

RequestMapping requestMapping = (RequestMapping) annotation;

requestMethod = requestMapping.method().length == 0

? RequestMethod.GET : requestMapping.method()[0];

urls = requestMapping.value();

consumes = StringHelper.getFirstOrEmpty(requestMapping.consumes());

} else if (annotation instanceof GetMapping) {

requestMethod = RequestMethod.GET;

urls = ((GetMapping) annotation).value();

consumes = StringHelper.getFirstOrEmpty(((GetMapping) annotation).consumes());

} else if (annotation instanceof PostMapping) {

requestMethod = RequestMethod.POST;

urls = ((PostMapping) annotation).value();

consumes = StringHelper.getFirstOrEmpty(((PostMapping) annotation).consumes());

} else if (annotation instanceof PutMapping) {

requestMethod = RequestMethod.PUT;

urls = ((PutMapping) annotation).value();

consumes = StringHelper.getFirstOrEmpty(((PutMapping) annotation).consumes());

} else if (annotation instanceof DeleteMapping) {

requestMethod = RequestMethod.DELETE;

urls = ((DeleteMapping) annotation).value();

consumes = StringHelper.getFirstOrEmpty(((DeleteMapping) annotation).consumes());

} else if (annotation instanceof PatchMapping) {

requestMethod = RequestMethod.PATCH;

urls = ((PatchMapping) annotation).value();

consumes = StringHelper.getFirstOrEmpty(((PatchMapping) annotation).consumes());

} else {

throw new NoRequestMappingFoundException(element);

}

HttpMethod httpMethod = HttpMethod.resolve(requestMethod.name());

String url = StringHelper.getFirstOrEmpty(urls);

MediaType mediaType;

try {

mediaType = MediaType.valueOf(consumes);

} catch (InvalidMediaTypeException exception) {

mediaType = MediaType.APPLICATION_JSON_UTF8;

}

return new Mapping(httpMethod, url, mediaType);

}