Malformed api-dics JSON when custom HttpMessageConverter is used. Fixes #624

Author: bnasslahsen

springdoc-openapi-webflux-core/src/main/java/org/springdoc/webflux/api/MultipleOpenApiResource.java

@@ -103,7 +103,7 @@ public void afterPropertiesSet() throws Exception {
 	}
 
 	@Operation(hidden = true)
-	@GetMapping(value = API_DOCS_URL + "/{group}", produces = MediaType.APPLICATION_JSON_VALUE)
+	@GetMapping(value = API_DOCS_URL + "/{group}", produces = MediaType.TEXT_PLAIN_VALUE)
 	public Mono<String> openapiJson(ServerHttpRequest
 			serverHttpRequest, @Value(API_DOCS_URL) String apiDocsUrl, @PathVariable String
 			group)

springdoc-openapi-webflux-core/src/main/java/org/springdoc/webflux/api/OpenApiResource.java

@@ -81,7 +81,7 @@ public OpenApiResource(OpenAPIBuilder openAPIBuilder, AbstractRequestBuilder req
 	}
 
 	@Operation(hidden = true)
-	@GetMapping(value = API_DOCS_URL, produces = MediaType.APPLICATION_JSON_VALUE)
+	@GetMapping(value = API_DOCS_URL, produces = MediaType.TEXT_PLAIN_VALUE)
 	public Mono<String> openapiJson(ServerHttpRequest serverHttpRequest, @Value(API_DOCS_URL) String apiDocsUrl)
 			throws JsonProcessingException {
 		calculateServerUrl(serverHttpRequest, apiDocsUrl);
@@ -122,7 +122,7 @@ protected void getPaths(Map<String, Object> restControllers) {
 		}
 	}
 
-	private void calculateServerUrl(ServerHttpRequest serverHttpRequest, String apiDocsUrl) {
+	protected void calculateServerUrl(ServerHttpRequest serverHttpRequest, String apiDocsUrl) {
 		String requestUrl = decode(serverHttpRequest.getURI().toString());
 		String serverBaseUrl = requestUrl.substring(0, requestUrl.length() - apiDocsUrl.length());
 		openAPIBuilder.setServerBaseUrl(serverBaseUrl);

springdoc-openapi-webmvc-core/src/main/java/org/springdoc/webmvc/api/MultipleOpenApiResource.java

@@ -113,7 +113,7 @@ public void afterPropertiesSet() throws Exception {
 	}
 
 	@Operation(hidden = true)
-	@GetMapping(value = API_DOCS_URL + "/{group}", produces = MediaType.APPLICATION_JSON_VALUE)
+	@GetMapping(value = API_DOCS_URL + "/{group}", produces = MediaType.TEXT_PLAIN_VALUE)
 	public String openapiJson(HttpServletRequest request, @Value(API_DOCS_URL) String apiDocsUrl,
 			@PathVariable String group)
 			throws JsonProcessingException {

springdoc-openapi-webmvc-core/src/main/java/org/springdoc/webmvc/api/OpenApiResource.java

@@ -99,7 +99,7 @@ public OpenApiResource( OpenAPIBuilder openAPIBuilder, AbstractRequestBuilder re
 	}
 
 	@Operation(hidden = true)
-	@GetMapping(value = API_DOCS_URL, produces = MediaType.APPLICATION_JSON_VALUE)
+	@GetMapping(value = API_DOCS_URL, produces = MediaType.TEXT_PLAIN_VALUE)
 	public String openapiJson(HttpServletRequest request, @Value(API_DOCS_URL) String apiDocsUrl)
 			throws JsonProcessingException {
 		calculateServerUrl(request, apiDocsUrl);
@@ -159,7 +159,7 @@ && isPathToMatch(operationPath)) {
 		}
 	}
 
-	private boolean isRestController(Map<String, Object> restControllers, HandlerMethod handlerMethod,
+	protected boolean isRestController(Map<String, Object> restControllers, HandlerMethod handlerMethod,
 			String operationPath) {
 		ResponseBody responseBodyAnnotation = AnnotationUtils.findAnnotation(handlerMethod.getBeanType(), ResponseBody.class);
 		if (responseBodyAnnotation == null)
@@ -170,7 +170,7 @@ private boolean isRestController(Map<String, Object> restControllers, HandlerMet
 				&& (springDocConfigProperties.isModelAndViewAllowed() || !ModelAndView.class.isAssignableFrom(handlerMethod.getMethod().getReturnType()));
 	}
 
-	private void calculateServerUrl(HttpServletRequest request, String apiDocsUrl) {
+	protected void calculateServerUrl(HttpServletRequest request, String apiDocsUrl) {
 		String requestUrl = decode(request.getRequestURL().toString());
 		String calculatedUrl = requestUrl.substring(0, requestUrl.length() - apiDocsUrl.length());
 		openAPIBuilder.setServerBaseUrl(calculatedUrl);