application/problem+json content type is not set for ProblemDetails. Fixes #2982

Author: bnasslahsen

springdoc-openapi-starter-common/src/main/java/org/springdoc/core/service/GenericResponseService.java

@@ -448,10 +448,11 @@ private void buildGenericApiResponses(Components components, MethodParameter met
 		if (apiResponse != null) {
 			Content content = apiResponse.getContent();
 			if (content != null) {
-				io.swagger.v3.oas.models.media.MediaType mediaType = content.get(MediaType.ALL_VALUE);
+				String defaultProducesMediaType  = springDocConfigProperties.getDefaultProducesMediaType();
+				io.swagger.v3.oas.models.media.MediaType mediaType = content.get(defaultProducesMediaType);
 				if (mediaType != null && ProblemDetail.class.isAssignableFrom(methodParameter.getParameterType())) {
 					content.addMediaType(MediaType.APPLICATION_PROBLEM_JSON_VALUE, mediaType);
-					content.remove(MediaType.ALL_VALUE);
+					content.remove(defaultProducesMediaType);
 				}
 			}
 		}

springdoc-openapi-starter-webmvc-api/src/test/java/test/org/springdoc/api/v31/app124/SpringDocApp124Test.java

@@ -26,11 +26,13 @@
 import test.org.springdoc.api.v31.AbstractSpringDocTest;
 
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.test.context.TestPropertySource;
 
 
 /**
  * Tests Spring meta-annotations as method parameters
  */
+@TestPropertySource(properties = "springdoc.default-produces-media-type=application/json")
 public class SpringDocApp124Test extends AbstractSpringDocTest {
 
 	@SpringBootApplication

springdoc-openapi-starter-webmvc-api/src/test/resources/results/3.1.0/app124.json

@@ -53,7 +53,7 @@
           "418": {
             "description": "I'm a teapot",
             "content": {
-              "*/*": {
+              "application/json": {
                 "schema": {
                   "type": "object"
                 }