[spring] Support 'date-time-local' format

See https://spec.openapis.org/registry/format/date-time-local.html

Author: Allsimon

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java

@@ -662,9 +662,10 @@ public void processOpts() {
             typeMapping.put("date", "LocalDate");
             importMapping.put("LocalDate", "java.time.LocalDate");
             importMapping.put("LocalTime", "java.time.LocalTime");
+            typeMapping.put("date-time-local", "LocalDateTime");
+            importMapping.put("LocalDateTime", "java.time.LocalDateTime");
             if ("java8-localdatetime".equals(dateLibrary)) {
                 typeMapping.put("DateTime", "LocalDateTime");
-                importMapping.put("LocalDateTime", "java.time.LocalDateTime");
             } else {
                 typeMapping.put("DateTime", "OffsetDateTime");
                 importMapping.put("OffsetDateTime", "java.time.OffsetDateTime");

modules/openapi-generator/src/test/java/org/openapitools/codegen/java/spring/SpringCodegenTest.java

@@ -381,6 +381,35 @@ public void generateFormatForDateAndDateTimeQueryParam() throws IOException {
                 .containsWithNameAndAttributes("DateTimeFormat", ImmutableMap.of("iso", "DateTimeFormat.ISO.DATE_TIME"));
     }
 
+    @Test
+    public void generateLocalDateTimeForLocalDateFormat() throws IOException {
+        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        output.deleteOnExit();
+        String outputPath = output.getAbsolutePath().replace('\\', '/');
+
+        OpenAPI openAPI = new OpenAPIParser()
+                .readLocation("src/test/resources/3_0/spring/date-time-local.yml", null, new ParseOptions()).getOpenAPI();
+
+        SpringCodegen codegen = new SpringCodegen();
+        codegen.setOutputDir(output.getAbsolutePath());
+
+        ClientOptInput input = new ClientOptInput();
+        input.openAPI(openAPI);
+        input.config(codegen);
+
+        DefaultGenerator generator = new DefaultGenerator();
+        generator.setGeneratorPropertyDefault(CodegenConstants.MODELS, "true");
+        generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_TESTS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_DOCS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.APIS, "false");
+        generator.setGenerateMetadata(false);
+        generator.opts(input).generate();
+
+        JavaFileAssert.assertThat(Paths.get(outputPath + "/src/main/java/org/openapitools/model/EventParams.java"))
+                .hasImports("java.time.LocalDateTime")
+                .assertProperty("startAt").withType("LocalDateTime");
+    }
+
     @Test
     public void interfaceDefaultImplDisableWithResponseWrapper() {
         final SpringCodegen codegen = new SpringCodegen();

modules/openapi-generator/src/test/resources/3_0/spring/date-time-local.yml

@@ -0,0 +1,30 @@
+openapi: 3.0.0
+info:
+  version: 1.0.0
+  title: Local Date Format Test
+paths:
+  /events:
+    get:
+      operationId: getEvents
+      parameters:
+        - in: query
+          name: eventParams
+          style: form
+          explode: true
+          schema:
+            $ref: '#/components/schemas/EventParams'
+      responses:
+        '200':
+          description: OK
+components:
+  schemas:
+    EventParams:
+      type: object
+      properties:
+        startAt:
+          type: string
+          format: date-time-local
+          example: '2024-01-15T10:30:00'
+        name:
+          type: string
+          example: 'My Event'