fix oas 3.1 extensions naming resolving

Author: frantuma

modules/swagger-core/src/main/java/io/swagger/v3/core/jackson/ModelResolver.java

@@ -2152,7 +2152,7 @@ protected Map<String, Object> resolveExtensions(Annotated a, Annotation[] annota
         if (schema != null &&
                 schema.extensions() != null &&
                 schema.extensions().length > 0) {
-            return AnnotationsUtils.getExtensions(schema.extensions());
+            return AnnotationsUtils.getExtensions(openapi31, schema.extensions());
         }
         return null;
     }
@@ -2346,7 +2346,7 @@ protected Map<String, Object> resolveExtensions(AnnotatedType a, io.swagger.v3.o
         if (arraySchema != null &&
                 arraySchema.extensions() != null &&
                 arraySchema.extensions().length > 0) {
-            return AnnotationsUtils.getExtensions(arraySchema.extensions());
+            return AnnotationsUtils.getExtensions(openapi31, arraySchema.extensions());
         }
         return null;
     }

modules/swagger-core/src/main/java/io/swagger/v3/core/util/AnnotationsUtils.java

@@ -802,7 +802,7 @@ public static Optional<Schema> getSchemaFromAnnotation(
         }
 
         if (schema.extensions().length > 0) {
-            Map<String, Object> extensions = AnnotationsUtils.getExtensions(schema.extensions());
+            Map<String, Object> extensions = AnnotationsUtils.getExtensions(openapi31, schema.extensions());
             if (extensions != null) {
                 extensions.forEach(schemaObject::addExtension);
             }
@@ -1739,7 +1739,8 @@ public static Map<String, Object> getExtensions(boolean openapi31, Extension...
         final Map<String, Object> map = new HashMap<>();
         for (Extension extension : extensions) {
             final String name = extension.name();
-            final String key = name.length() > 0 ? StringUtils.prependIfMissing(name, "x-") : name;
+            String decoratedName = openapi31 ? name : StringUtils.prependIfMissing(name, "x-");
+            final String key = name.length() > 0 ? decoratedName : name;
 
             for (ExtensionProperty property : extension.properties()) {
                 final String propertyName = property.name();
@@ -1755,12 +1756,15 @@ public static Map<String, Object> getExtensions(boolean openapi31, Extension...
                                 } else {
                                     processedValue = Json.mapper().readTree(propertyValue);
                                 }
-                                map.put(StringUtils.prependIfMissing(propertyName, "x-"), processedValue);
+                                decoratedName = openapi31 ? propertyName : StringUtils.prependIfMissing(propertyName, "x-");
+                                map.put(decoratedName, processedValue);
                             } catch (Exception e) {
-                                map.put(StringUtils.prependIfMissing(propertyName, "x-"), propertyValue);
+                                decoratedName = openapi31 ? propertyName : StringUtils.prependIfMissing(propertyName, "x-");
+                                map.put(decoratedName, propertyValue);
                             }
                         } else {
-                            map.put(StringUtils.prependIfMissing(propertyName, "x-"), propertyValue);
+                            decoratedName = openapi31 ? propertyName : StringUtils.prependIfMissing(propertyName, "x-");
+                            map.put(decoratedName, propertyValue);
                         }
                     } else {
                         Object value = map.get(key);

modules/swagger-core/src/main/java/io/swagger/v3/core/util/ParameterProcessor.java

@@ -154,7 +154,7 @@ public static Parameter applyAnnotations(
                 }
 
                 if (p.extensions().length > 0) {
-                    Map<String, Object> extensionMap = AnnotationsUtils.getExtensions(p.extensions());
+                    Map<String, Object> extensionMap = AnnotationsUtils.getExtensions(openapi31, p.extensions());
                     if (extensionMap != null && ! extensionMap.isEmpty()) {
                         extensionMap.forEach(parameter::addExtension);
                     }

modules/swagger-jaxrs2/src/main/java/io/swagger/v3/jaxrs2/OperationParser.java

@@ -42,7 +42,7 @@ public static Optional<RequestBody> getRequestBody(io.swagger.v3.oas.annotations
             isEmpty = false;
         }
         if (requestBody.extensions().length > 0) {
-            Map<String, Object> extensions = AnnotationsUtils.getExtensions(requestBody.extensions());
+            Map<String, Object> extensions = AnnotationsUtils.getExtensions(openapi31, requestBody.extensions());
             if (extensions != null) {
                 extensions.forEach(requestBodyObject::addExtension);
             }
@@ -85,7 +85,7 @@ public static Optional<ApiResponses> getApiResponses(final io.swagger.v3.oas.ann
                 apiResponseObject.setDescription(response.description());
             }
             if (response.extensions().length > 0) {
-                Map<String, Object> extensions = AnnotationsUtils.getExtensions(response.extensions());
+                Map<String, Object> extensions = AnnotationsUtils.getExtensions(openapi31, response.extensions());
                 if (extensions != null) {
                     extensions.forEach(apiResponseObject::addExtension);
                 }

modules/swagger-jaxrs2/src/main/java/io/swagger/v3/jaxrs2/Reader.java

@@ -335,7 +335,7 @@ public OpenAPI read(Class<?> cls,
             // OpenApiDefinition extensions
             if (openAPIDefinition.extensions().length > 0) {
                 openAPI.setExtensions(AnnotationsUtils
-                        .getExtensions(openAPIDefinition.extensions()));
+                        .getExtensions(config.isOpenAPI31(), openAPIDefinition.extensions()));
             }
 
         }