fix arraySchema in SchemaProperty. fixes #2373

Author: uc4w6c

springdoc-openapi-starter-common/src/main/java/org/springdoc/core/utils/SpringDocAnnotationsUtils.java

@@ -365,7 +365,13 @@ private static MediaType getMediaType(Schema schema, Components components, Json
 						Schema oSchema = mediaType.getSchema();
 						for (SchemaProperty sp : annotationContent.schemaProperties()) {
 							Class<?> schemaImplementation = sp.schema().implementation();
-							boolean isArray = isArray(annotationContent);
+							boolean isArray = false;
+							if (schemaImplementation == Void.class) {
+								schemaImplementation = sp.array().schema().implementation();
+								if (schemaImplementation != Void.class) {
+									isArray = true;
+								}
+							}
 							getSchema(sp.schema(), sp.array(), isArray, schemaImplementation, components, jsonViewAnnotation, openapi31)
 									.ifPresent(s -> {
 										if ("array".equals(oSchema.getType())) {

springdoc-openapi-starter-webmvc-api/src/test/java/test/org/springdoc/api/v30/app211/HelloController.java

@@ -0,0 +1,61 @@
+/*
+ *
+ *  *
+ *  *  *
+ *  *  *  *
+ *  *  *  *  * Copyright 2019-2023 the original author or authors.
+ *  *  *  *  *
+ *  *  *  *  * Licensed under the Apache License, Version 2.0 (the "License");
+ *  *  *  *  * you may not use this file except in compliance with the License.
+ *  *  *  *  * You may obtain a copy of the License at
+ *  *  *  *  *
+ *  *  *  *  *      https://www.apache.org/licenses/LICENSE-2.0
+ *  *  *  *  *
+ *  *  *  *  * Unless required by applicable law or agreed to in writing, software
+ *  *  *  *  * distributed under the License is distributed on an "AS IS" BASIS,
+ *  *  *  *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  *  *  *  * See the License for the specific language governing permissions and
+ *  *  *  *  * limitations under the License.
+ *  *  *  *
+ *  *  *
+ *  *
+ *
+ */
+
+package test.org.springdoc.api.v30.app211;
+
+import io.swagger.v3.oas.annotations.media.ArraySchema;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.media.SchemaProperty;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class HelloController {
+	@ApiResponses(value = @ApiResponse(
+			responseCode = "200",
+			content = {
+					@Content(
+							mediaType = MediaType.APPLICATION_JSON_VALUE,
+							schemaProperties = {
+									@SchemaProperty(
+											name = "items",
+											array = @ArraySchema(schema = @Schema(implementation = PagedObject.class))),
+									@SchemaProperty(name = "paging", schema = @Schema(implementation = Paging.class))
+							}
+					)
+			}
+	))
+	@GetMapping
+	public String index() {
+		return null;
+	}
+
+	record PagedObject(long id, String name) {}
+	record Paging(int page, int total, int lastPage) {}
+}

springdoc-openapi-starter-webmvc-api/src/test/java/test/org/springdoc/api/v30/app211/SpringDocApp211Test.java

@@ -0,0 +1,36 @@
+/*
+ *
+ *  *
+ *  *  *
+ *  *  *  *
+ *  *  *  *  * Copyright 2019-2023 the original author or authors.
+ *  *  *  *  *
+ *  *  *  *  * Licensed under the Apache License, Version 2.0 (the "License");
+ *  *  *  *  * you may not use this file except in compliance with the License.
+ *  *  *  *  * You may obtain a copy of the License at
+ *  *  *  *  *
+ *  *  *  *  *      https://www.apache.org/licenses/LICENSE-2.0
+ *  *  *  *  *
+ *  *  *  *  * Unless required by applicable law or agreed to in writing, software
+ *  *  *  *  * distributed under the License is distributed on an "AS IS" BASIS,
+ *  *  *  *  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  *  *  *  * See the License for the specific language governing permissions and
+ *  *  *  *  * limitations under the License.
+ *  *  *  *
+ *  *  *
+ *  *
+ *
+ */
+
+package test.org.springdoc.api.v30.app211;
+
+import test.org.springdoc.api.v30.AbstractSpringDocV30Test;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+public class SpringDocApp211Test extends AbstractSpringDocV30Test {
+
+	@SpringBootApplication
+	static class SpringDocTestApp {}
+
+}

springdoc-openapi-starter-webmvc-api/src/test/resources/results/3.0.1/app211.json

@@ -0,0 +1,79 @@
+{
+  "openapi": "3.0.1",
+  "info": {
+    "title": "OpenAPI definition",
+    "version": "v0"
+  },
+  "servers": [
+    {
+      "url": "http://localhost",
+      "description": "Generated server url"
+    }
+  ],
+  "paths": {
+    "/": {
+      "get": {
+        "tags": [
+          "hello-controller"
+        ],
+        "operationId": "index_1",
+        "responses": {
+          "200": {
+            "description": "OK",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "object",
+                  "properties": {
+                    "items": {
+                      "type": "array",
+                      "items": {
+                        "$ref": "#/components/schemas/PagedObject"
+                      }
+                    },
+                    "paging": {
+                      "$ref": "#/components/schemas/Paging"
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  },
+  "components": {
+    "schemas": {
+      "PagedObject": {
+        "type": "object",
+        "properties": {
+          "id": {
+            "type": "integer",
+            "format": "int64"
+          },
+          "name": {
+            "type": "string"
+          }
+        }
+      },
+      "Paging": {
+        "type": "object",
+        "properties": {
+          "page": {
+            "type": "integer",
+            "format": "int32"
+          },
+          "total": {
+            "type": "integer",
+            "format": "int32"
+          },
+          "lastPage": {
+            "type": "integer",
+            "format": "int32"
+          }
+        }
+      }
+    }
+  }
+}