BugFix #2053 Spring Boot fails to parse LocalDate query parameter

Adds the format annotation so that Spring is able to serialize OpenApi date/date-time format into LocalDate/OffsetDateTime.

modules/openapi-generator/src/main/resources/JavaSpring/queryParams.mustache

@@ -1 +1 @@
-{{#isQueryParam}}{{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}@ApiParam(value = "{{{description}}}"{{#required}}, required = true{{/required}}{{#allowableValues}}, allowableValues = "{{#values}}{{{.}}}{{^-last}}, {{/-last}}{{#-last}}{{/-last}}{{/values}}"{{/allowableValues}}{{^isContainer}}{{#defaultValue}}, defaultValue = {{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{/defaultValue}}{{/isContainer}}) {{#useBeanValidation}}@Valid{{/useBeanValidation}}{{^isModel}} @RequestParam(value = "{{baseName}}"{{#required}}, required = true{{/required}}{{^required}}, required = false{{/required}}{{^isContainer}}{{#defaultValue}}, defaultValue={{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{/defaultValue}}{{/isContainer}}){{/isModel}} {{>optionalDataType}} {{paramName}}{{/isQueryParam}}
+{{#isQueryParam}}{{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}@ApiParam(value = "{{{description}}}"{{#required}}, required = true{{/required}}{{#allowableValues}}, allowableValues = "{{#values}}{{{.}}}{{^-last}}, {{/-last}}{{#-last}}{{/-last}}{{/values}}"{{/allowableValues}}{{^isContainer}}{{#defaultValue}}, defaultValue = {{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{/defaultValue}}{{/isContainer}}) {{#useBeanValidation}}@Valid{{/useBeanValidation}}{{^isModel}} @RequestParam(value = "{{baseName}}"{{#required}}, required = true{{/required}}{{^required}}, required = false{{/required}}{{^isContainer}}{{#defaultValue}}, defaultValue={{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{/defaultValue}}{{/isContainer}}){{/isModel}}{{#isDate}} @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE){{/isDate}}{{#isDateTime}} @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME){{/isDateTime}} {{>optionalDataType}} {{paramName}}{{/isQueryParam}}

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

@@ -167,13 +167,52 @@ public void doNotGenerateRequestParamForObjectQueryParam() throws IOException {
         checkFileNotContains(generator, outputPath + "/src/main/java/org/openapitools/api/PonyApi.java",  "@RequestParam");
     }
 
+    @Test
+    public void generateFormatForDateAndDateTimeQueryParam() 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/issue_2053.yaml", null, new ParseOptions()).getOpenAPI();
+
+        SpringCodegen codegen = new SpringCodegen();
+        codegen.setOutputDir(output.getAbsolutePath());
+        codegen.additionalProperties().put(CXFServerFeatures.LOAD_TEST_DATA_FROM_FILE, "true");
+
+        ClientOptInput input = new ClientOptInput();
+        input.openAPI(openAPI);
+        input.config(codegen);
+
+        MockDefaultGenerator generator = new MockDefaultGenerator();
+        generator.opts(input).generate();
+
+        checkFileContains(
+            generator,
+            outputPath + "/src/main/java/org/openapitools/api/ElephantsApi.java",
+            "@org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)"
+        );
+        checkFileContains(
+            generator,
+            outputPath + "/src/main/java/org/openapitools/api/ZebrasApi.java",
+            "@org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)"
+        );
+    }
+
     private void checkFileNotContains(MockDefaultGenerator generator, String path, String... lines) {
         String file = generator.getFiles().get(path);
         assertNotNull(file);
         for (String line : lines)
             assertFalse(file.contains(line));
     }
 
+    private void checkFileContains(MockDefaultGenerator generator, String path, String... lines) {
+        String file = generator.getFiles().get(path);
+        assertNotNull(file);
+        for (String line : lines)
+            assertTrue(file.contains(line));
+    }
+
     @Test
     public void clientOptsUnicity() {
         SpringCodegen codegen = new SpringCodegen();

modules/openapi-generator/src/test/resources/3_0/issue_2053.yaml

@@ -0,0 +1,28 @@
+openapi: 3.0.0
+servers:
+  - url: 'localhost:8080'
+info:
+  version: 1.0.0
+  title: OpenAPI Zoo
+  license:
+    name: Apache-2.0
+    url: 'http://www.apache.org/licenses/LICENSE-2.0.html'
+paths:
+  /elephants:
+    get:
+      operationId: getElephants
+      parameters:
+        - in: query
+          name: startDate
+          schema:
+            type: string
+            format: date
+  /zebras:
+    get:
+      operationId: getZebras
+      parameters:
+        - in: query
+          name: startDateTime
+          schema:
+            type: string
+            format: date-time