fix bug JsonPropertyIntrospector处理record类型里的枚举值时，会报空指针异常 #4983 (#5012)

Co-authored-by: QIURC <qiurongcai@huawei.com>

Author: caimo

swagger/swagger-generator/generator-core/src/main/java/org/apache/servicecomb/swagger/extend/introspector/JsonPropertyIntrospector.java

@@ -26,6 +26,8 @@
 
 import io.swagger.v3.core.jackson.SwaggerAnnotationIntrospector;
 
+import java.util.Objects;
+
 
 public class JsonPropertyIntrospector extends SwaggerAnnotationIntrospector {
   private static final long serialVersionUID = 4157263023893695762L;
@@ -47,10 +49,10 @@ public String findEnumValue(Enum<?> value) {
   @Override
   public String findPropertyDescription(Annotated annotated) {
     Class<?> enumClass = annotated.getRawType();
-    if (enumClass.isEnum()) {
+    if (enumClass.isEnum() && Objects.nonNull(annotated.getAnnotated())) {
       return SwaggerEnum.JDK.findPropertyDescription(enumClass, annotated.getAnnotated().getAnnotations());
     }
-    if (EnumUtils.isDynamicEnum(enumClass)) {
+    if (EnumUtils.isDynamicEnum(enumClass) && Objects.nonNull(annotated.getAnnotated())) {
       return SwaggerEnum.DYNAMIC.findPropertyDescription(enumClass, annotated.getAnnotated().getAnnotations());
     }
 

swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/TestSwaggerUtils.java

@@ -28,11 +28,14 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.logging.Logger;
 
 import org.apache.servicecomb.foundation.common.utils.ReflectUtils;
 import org.apache.servicecomb.swagger.SwaggerUtils;
 import org.apache.servicecomb.swagger.generator.SwaggerConst;
 import org.apache.servicecomb.swagger.generator.SwaggerGeneratorUtils;
+import org.apache.servicecomb.swagger.generator.core.pojo.TestTypeClass;
+import org.apache.servicecomb.swagger.generator.core.pojo.TestTypeRecord;
 import org.apache.servicecomb.swagger.generator.core.pojo.TestType1;
 import org.apache.servicecomb.swagger.generator.core.pojo.TestType2;
 import org.apache.servicecomb.swagger.generator.core.schema.RepeatOperation;
@@ -50,6 +53,7 @@
 
 @SuppressWarnings("rawtypes")
 public class TestSwaggerUtils {
+  Logger LOGGER = Logger.getLogger(TestSwaggerUtils.class.getName());
 
   @Test
   public void testSchemaMethod() {
@@ -117,12 +121,24 @@ private static class AllTypeTest2 {
     Map<String, TestType2> t3;
 
     TestType2[] t4;
+
+  }
+
+  private static class AllTypeTest3{
+    TestTypeRecord t5;
+  }
+  private static class AllTypeTest4{
+    TestTypeClass t5;
   }
 
   @Test
   public void testAddDefinitions() {
-    Field[] fields1 = AllTypeTest1.class.getDeclaredFields();
-    Field[] fields2 = AllTypeTest2.class.getDeclaredFields();
+    testAllType(AllTypeTest1.class, AllTypeTest2.class);
+  }
+
+  private void testAllType(Class clazz1, Class clazz2) {
+    Field[] fields1 = clazz1.getDeclaredFields();
+    Field[] fields2 = clazz2.getDeclaredFields();
     for (Field value : fields1) {
       for (Field field : fields2) {
         if (value.isSynthetic() || field.isSynthetic()) {
@@ -132,12 +148,18 @@ public void testAddDefinitions() {
           testExcep(value.getGenericType(), field.getGenericType());
           fail("IllegalArgumentException expected");
         } catch (IllegalArgumentException e) {
+          LOGGER.warning(value.getGenericType() + " " + field.getGenericType() + " " + e.getMessage());
           MatcherAssert.assertThat(e.getMessage(), containsString("duplicate param model:"));
         }
       }
     }
   }
 
+  @Test
+  public void testAddDefinitionsWithRecord() {
+    testAllType(AllTypeTest3.class, AllTypeTest4.class);
+  }
+
   private void testExcep(Type f1, Type f2) {
     OpenAPI swagger = new OpenAPI();
     SwaggerUtils.resolveTypeSchemas(swagger, f1);
@@ -161,5 +183,13 @@ public void test_resolve_type_schemas_correct() {
     // should be ObjectSchema but swagger is not.
     // <pre> Assertions.assertTrue(schema instanceof ObjectSchema) </pre>
     Assertions.assertEquals("object", schema.getType());
+
+    openAPI = new OpenAPI();
+    schema = SwaggerUtils.getSchema(openAPI, SwaggerUtils.resolveTypeSchemas(openAPI, TestTypeClass.class)); // resolve reference
+    Assertions.assertEquals("object", schema.getType());
+
+    openAPI = new OpenAPI();
+    schema = SwaggerUtils.getSchema(openAPI, SwaggerUtils.resolveTypeSchemas(openAPI, TestTypeRecord.class)); // resolve reference
+    Assertions.assertEquals("object", schema.getType());
   }
 }

swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/pojo/TestTypeClass.java

@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ *     http://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 org.apache.servicecomb.swagger.generator.core.pojo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(name = "YYY")
+public class TestTypeClass {
+  @Schema(description = "language")
+  private TestTypeEnumLang testTypeEnumLang;
+
+  public TestTypeEnumLang getTestTypeEnumLang() {
+    return testTypeEnumLang;
+  }
+
+  public void setTestTypeEnumLang(TestTypeEnumLang testTypeEnumLang) {
+    this.testTypeEnumLang = testTypeEnumLang;
+  }
+}

swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/pojo/TestTypeEnumLang.java

@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ *     http://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 org.apache.servicecomb.swagger.generator.core.pojo;
+
+public enum TestTypeEnumLang {
+  JAVA, CHINESE, UNKNOWN;
+}

swagger/swagger-generator/generator-core/src/test/java/org/apache/servicecomb/swagger/generator/core/pojo/TestTypeRecord.java

@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ *     http://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 org.apache.servicecomb.swagger.generator.core.pojo;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(name = "YYY")
+public record TestTypeRecord(
+    @Schema(description = "language") TestTypeEnumLang testTypeEnumLang) {
+}