Support the meta annotation at @NumberFormat

spring-context/src/main/java/org/springframework/format/annotation/NumberFormat.java

@@ -41,7 +41,7 @@
  */
 @Documented
 @Retention(RetentionPolicy.RUNTIME)
-@Target({ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER})
+@Target({ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE})
 public @interface NumberFormat {
 
 	/**

spring-context/src/test/java/org/springframework/format/support/FormattingConversionServiceTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -48,6 +48,7 @@
 import org.springframework.core.convert.support.DefaultConversionService;
 import org.springframework.format.Formatter;
 import org.springframework.format.Printer;
+import org.springframework.format.annotation.NumberFormat;
 import org.springframework.format.datetime.joda.DateTimeParser;
 import org.springframework.format.datetime.joda.JodaDateTimeFormatAnnotationFormatterFactory;
 import org.springframework.format.datetime.joda.ReadablePartialPrinter;
@@ -120,12 +121,15 @@ public void testFormatFieldForValueInjectionUsingMetaAnnotations() {
 		ac.registerBeanDefinition("ppc", new RootBeanDefinition(PropertyPlaceholderConfigurer.class));
 		ac.refresh();
 		System.setProperty("myDate", "10-31-09");
+		System.setProperty("myNumber", "99.99%");
 		try {
 			MetaValueBean valueBean = ac.getBean(MetaValueBean.class);
 			assertEquals(new LocalDate(2009, 10, 31), new LocalDate(valueBean.date));
+			assertEquals(Double.valueOf(0.9999), valueBean.number);
 		}
 		finally {
 			System.clearProperty("myDate");
+			System.clearProperty("myNumber");
 		}
 	}
 
@@ -341,6 +345,10 @@ public static class MetaValueBean {
 
 		@MyDateAnn
 		public Date date;
+
+		@MyNumberAnn
+		public Double number;
+
 	}
 
 
@@ -350,6 +358,11 @@ public static class MetaValueBean {
 	public static @interface MyDateAnn {
 	}
 
+	@Value("${myNumber}")
+	@org.springframework.format.annotation.NumberFormat(style = NumberFormat.Style.PERCENT)
+	@Retention(RetentionPolicy.RUNTIME)
+	public static @interface MyNumberAnn {
+	}
 
 	public static class Model {
 

spring-webmvc/src/test/java/org/springframework/web/servlet/config/MvcNamespaceTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -37,6 +37,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.dataformat.xml.XmlMapper;
 import org.hamcrest.Matchers;
+import org.joda.time.LocalDate;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -52,6 +53,7 @@
 import org.springframework.core.io.ClassPathResource;
 import org.springframework.format.annotation.DateTimeFormat;
 import org.springframework.format.annotation.DateTimeFormat.ISO;
+import org.springframework.format.annotation.NumberFormat;
 import org.springframework.format.support.FormattingConversionServiceFactoryBean;
 import org.springframework.http.MediaType;
 import org.springframework.http.converter.HttpMessageConverter;
@@ -165,7 +167,7 @@ public void setUp() throws Exception {
 		appContext.getServletContext().setAttribute(attributeName, appContext);
 
 		handler = new TestController();
-		Method method = TestController.class.getMethod("testBind", Date.class, TestBean.class, BindingResult.class);
+		Method method = TestController.class.getMethod("testBind", Date.class, Double.class, TestBean.class, BindingResult.class);
 		handlerMethod = new InvocableHandlerMethod(handler, method);
 	}
 
@@ -211,6 +213,7 @@ public void testDefaultConfig() throws Exception {
 		// default web binding initializer behavior test
 		request = new MockHttpServletRequest("GET", "/");
 		request.addParameter("date", "2009-10-31");
+		request.addParameter("percent", "99.99%");
 		MockHttpServletResponse response = new MockHttpServletResponse();
 
 		HandlerExecutionChain chain = mapping.getHandler(request);
@@ -222,6 +225,8 @@ public void testDefaultConfig() throws Exception {
 
 		adapter.handle(request, response, handlerMethod);
 		assertTrue(handler.recordedValidationError);
+		assertEquals(LocalDate.parse("2009-10-31").toDate(), handler.date);
+		assertEquals(Double.valueOf(0.9999),handler.percent);
 
 		CompositeUriComponentsContributor uriComponentsContributor = this.appContext.getBean(
 				MvcUriComponentsBuilder.MVC_URI_COMPONENTS_CONTRIBUTOR_BEAN_NAME,
@@ -841,6 +846,12 @@ private void loadBeanDefinitions(String fileName, int expectedBeanCount) {
 	public @interface IsoDate {
 	}
 
+	@NumberFormat(style = NumberFormat.Style.PERCENT)
+	@Target({ElementType.PARAMETER})
+	@Retention(RetentionPolicy.RUNTIME)
+	public @interface PercentNumber {
+	}
+
 	@Validated(MyGroup.class)
 	@Target({ElementType.PARAMETER})
 	@Retention(RetentionPolicy.RUNTIME)
@@ -850,10 +861,14 @@ private void loadBeanDefinitions(String fileName, int expectedBeanCount) {
 	@Controller
 	public static class TestController {
 
+		private Date date;
+		private Double percent;
 		private boolean recordedValidationError;
 
 		@RequestMapping
-		public void testBind(@RequestParam @IsoDate Date date, @MyValid TestBean bean, BindingResult result) {
+		public void testBind(@RequestParam @IsoDate Date date, @RequestParam(required = false) @PercentNumber Double percent, @MyValid TestBean bean, BindingResult result) {
+			this.date = date;
+			this.percent = percent;
 			this.recordedValidationError = (result.getErrorCount() == 1);
 		}
 	}