NPE when customizing group's open-api without specifying any schema. Fixes #2960

Author: bnasslahsen

springdoc-openapi-starter-common/src/main/java/org/springdoc/core/customizers/SpecPropertiesCustomizer.java

@@ -221,25 +221,25 @@ private void customizeComponents(OpenAPI openApi, Components componentsPropertie
 		else {
 			Map<String, Schema> schemaMap = components.getSchemas();
 			schemaMap.forEach((key, schema) -> {
-				Schema schemaProperties = componentsProperties.getSchemas().get(key);
-				if (schemaProperties != null) {
-					resolveString(schema::setDescription, schemaProperties::getDescription);
-					Map<String, Schema> properties = schema.getProperties();
-					if (CollectionUtils.isEmpty(properties)) {
-						return;
-					}
-					properties.forEach((propKey, propSchema) -> {
-						Schema propSchemaProperties = (Schema) schemaProperties.getProperties().get(propKey);
-						if (propSchemaProperties != null) {
-							resolveString(propSchema::description, propSchemaProperties::getDescription);
-							resolveString(propSchema::title, propSchemaProperties::getTitle);
-							resolveString(propSchema::example, propSchemaProperties::getExample);
+				if(!CollectionUtils.isEmpty(componentsProperties.getSchemas())) {
+					Schema schemaProperties = componentsProperties.getSchemas().get(key);
+					if (schemaProperties != null) {
+						resolveString(schema::setDescription, schemaProperties::getDescription);
+						Map<String, Schema> properties = schema.getProperties();
+						if (CollectionUtils.isEmpty(properties)) {
+							return;
 						}
-					});
+						properties.forEach((propKey, propSchema) -> {
+							Schema propSchemaProperties = (Schema) schemaProperties.getProperties().get(propKey);
+							if (propSchemaProperties != null) {
+								resolveString(propSchema::description, propSchemaProperties::getDescription);
+								resolveString(propSchema::title, propSchemaProperties::getTitle);
+								resolveString(propSchema::example, propSchemaProperties::getExample);
+							}
+						});
+					}
 				}
 			});
-
-
 			Map<String, SecurityScheme> securitySchemeMap = components.getSecuritySchemes();
 			if (CollectionUtils.isEmpty(securitySchemeMap)) {
 				components.setSecuritySchemes(componentsProperties.getSecuritySchemes());

springdoc-openapi-starter-webmvc-api/src/test/resources/application-217.yml

@@ -17,13 +17,11 @@ springdoc:
           - url: "https://demo.example.com"
             description: "demo Server"
         components:
-          schemas:
-            PersonDTO:
-              description: Description for PersonDTO component
-              properties:
-                name:
-                  description: Description for 'name' property
-                  example: Example value for 'name' property
+          security-schemes:
+            auth:
+              type: http
+              scheme: bearer
+              bearer-format: JWT
     - group: user
       display-name: User Interfaces
       packages-to-scan:

springdoc-openapi-starter-webmvc-api/src/test/resources/results/3.0.1/app217-1.json

@@ -50,6 +50,13 @@
         },
         "description": "Description for PersonDTO component"
       }
+    },
+    "securitySchemes": {
+      "auth": {
+        "type": "http",
+        "scheme": "bearer",
+        "bearerFormat": "JWT"
+      }
     }
   }
 }

springdoc-openapi-starter-webmvc-api/src/test/resources/results/3.1.0/app217-1.json

@@ -50,6 +50,13 @@
           }
         }
       }
+    },
+    "securitySchemes": {
+      "auth": {
+        "type": "http",
+        "scheme": "bearer",
+        "bearerFormat": "JWT"
+      }
     }
   }
 }