default config for web binding initializer and formatting/conversion system w/ mvc namespace

org.springframework.context/src/main/java/org/springframework/format/annotation/DateTimeFormat.java

@@ -25,7 +25,7 @@ import java.lang.annotation.Target;
  * @author Keith Donald
  * @since 3.0
  */
-@Target( { ElementType.METHOD, ElementType.FIELD })
+@Target( { ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER })
 @Retention(RetentionPolicy.RUNTIME)
 public @interface DateTimeFormat {
 

org.springframework.context/src/main/java/org/springframework/format/annotation/ISODateTimeFormat.java

@@ -25,7 +25,7 @@ import java.lang.annotation.Target;
  * @author Keith Donald
  * @since 3.0
  */
-@Target( { ElementType.METHOD, ElementType.FIELD })
+@Target( { ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER })
 @Retention(RetentionPolicy.RUNTIME)
 public @interface ISODateTimeFormat {
 

org.springframework.context/src/main/java/org/springframework/format/support/FormattingConversionServiceFactoryBean.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2002-2009 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
+ *
+ *      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.springframework.format.support;
+
+import org.springframework.beans.factory.FactoryBean;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.core.convert.ConversionService;
+import org.springframework.format.datetime.joda.JodaTimeFormattingConfigurer;
+import org.springframework.util.ClassUtils;
+
+/**
+ * A factory for a FormattingConversionService that installs default formatters for common types such as numbers and datetimes.
+ * @author Keith Donald
+ * @since 3.0
+ */
+public class FormattingConversionServiceFactoryBean implements FactoryBean<ConversionService>, InitializingBean {
+
+	private ConversionService parent;
+	
+	private FormattingConversionService conversionService;
+	
+	public void setParent(ConversionService parent) {
+		this.parent = parent;
+	}	
+	
+	// implementing InitializingBean
+	
+	public void afterPropertiesSet() {
+		initConversionService();
+		installJodaTimeFormattingIfPresent();
+	}
+	
+	// implementing FactoryBean
+	
+	public ConversionService getObject() {
+		return this.conversionService;
+	}
+
+	public Class<? extends ConversionService> getObjectType() {
+		return ConversionService.class;
+	}
+
+	public boolean isSingleton() {
+		return true;
+	}
+
+	// internal helpers
+	
+	private void initConversionService() {
+		if (this.parent != null) {
+			this.conversionService = new FormattingConversionService(this.parent);
+		} else {
+			this.conversionService = new FormattingConversionService();
+		}
+	}
+	
+	private void installJodaTimeFormattingIfPresent() {
+		if (ClassUtils.isPresent("org.joda.time.DateTime", FormattingConversionService.class.getClassLoader())) {
+			new JodaTimeFormattingConfigurer().installJodaTimeFormatting(this.conversionService);			
+		}
+	}
+	
+}

org.springframework.core/src/main/java/org/springframework/core/convert/TypeDescriptor.java

@@ -24,9 +24,12 @@ import java.util.Map;
 
 import org.springframework.core.GenericCollectionTypeResolver;
 import org.springframework.core.MethodParameter;
+import org.springframework.core.style.StylerUtils;
 import org.springframework.util.Assert;
 import org.springframework.util.ClassUtils;
 
+import com.sun.xml.internal.rngom.ast.builder.Annotations;
+
 /**
  * Context about a type to convert to.
  *
@@ -277,7 +280,7 @@ public class TypeDescriptor {
 			}
 			return this.cachedFieldAnnotations;
 		} else if (this.methodParameter != null) {
-			return this.methodParameter.getMethod().getAnnotations();
+			return this.methodParameter.getParameterAnnotations();
 		} else {
 			return new Annotation[0];
 		}
@@ -411,7 +414,15 @@ public class TypeDescriptor {
 		if (this == TypeDescriptor.NULL) {
 			return "[TypeDescriptor.NULL]";
 		} else {
-			return "[TypeDescriptor type=" + getType().getName() + "]";
+			StringBuilder builder = new StringBuilder();
+			builder.append("[TypeDescriptor ");
+			Annotation[] anns = getAnnotations();
+			for (Annotation ann : anns) {
+				builder.append("@" + ann.annotationType().getName()).append(' ');
+			}
+			builder.append(getType().getName());
+			builder.append("]");
+			return builder.toString();
 		}
 	}
 	

org.springframework.core/src/main/java/org/springframework/core/convert/support/GenericConversionService.java

@@ -26,6 +26,8 @@ import java.util.LinkedList;
 import java.util.Map;
 import java.util.Set;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.springframework.core.GenericTypeResolver;
 import org.springframework.core.convert.ConversionFailedException;
 import org.springframework.core.convert.ConversionService;
@@ -45,6 +47,8 @@ import org.springframework.util.ClassUtils;
  */
 public class GenericConversionService implements ConversionService, ConverterRegistry {
 
+	private static final Log logger = LogFactory.getLog(GenericConversionService.class);
+	
 	private static final GenericConverter NO_OP_CONVERTER = new GenericConverter() {
 		public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
 			return source;
@@ -326,6 +330,9 @@ public class GenericConversionService implements ConversionService, ConverterReg
 	}
 
 	private GenericConverter findConverterForClassPair(TypeDescriptor sourceType, TypeDescriptor targetType) {
+		if (logger.isDebugEnabled()) {
+			logger.debug("Looking for Converter to convert from " + sourceType + " to " + targetType);
+		}
 		Class<?> sourceObjectType = sourceType.getObjectType();
 		if (sourceObjectType.isInterface()) {
 			LinkedList<Class<?>> classQueue = new LinkedList<Class<?>>();
@@ -507,7 +514,14 @@ public class GenericConversionService implements ConversionService, ConverterReg
 		public GenericConverter matchConverter(TypeDescriptor sourceType, TypeDescriptor targetType) {
 			for (MatchableConverter matchable : this.matchableConverters) {
 				if (matchable.matches(sourceType, targetType)) {
+					if (logger.isDebugEnabled()) {
+						logger.debug("Converter Lookup [MATCHED] " + matchable);
+					}
 					return matchable.getConverter();
+				} else {
+					if (logger.isDebugEnabled()) {
+						logger.debug("Converter Lookup [DID NOT MATCH] " + matchable);
+					}					
 				}
 			}
 			return null;

org.springframework.web.servlet/src/main/java/org/springframework/web/servlet/config/AnnotatedControllersBeanDefinitionParser.java

@@ -23,6 +23,8 @@ import org.springframework.beans.factory.parsing.CompositeComponentDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
 import org.springframework.beans.factory.xml.BeanDefinitionParser;
 import org.springframework.beans.factory.xml.ParserContext;
+import org.springframework.format.support.FormattingConversionServiceFactoryBean;
+import org.springframework.web.bind.support.ConfigurableWebBindingInitializer;
 import org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter;
 import org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping;
 import org.w3c.dom.Element;
@@ -39,7 +41,7 @@ public class AnnotatedControllersBeanDefinitionParser implements BeanDefinitionP
 		Object source = parserContext.extractSource(element);
 		BeanDefinitionHolder handlerMappingHolder = registerDefaultAnnotationHandlerMapping(element, source, parserContext);
 		BeanDefinitionHolder handlerAdapterHolder = registerAnnotationMethodHandlerAdapter(element, source, parserContext);
-
+		
 		CompositeComponentDefinition compDefinition = new CompositeComponentDefinition(element.getTagName(), source);
 		parserContext.pushContainingComponent(compDefinition);
 		parserContext.registerComponent(new BeanComponentDefinition(handlerMappingHolder));
@@ -50,21 +52,41 @@ public class AnnotatedControllersBeanDefinitionParser implements BeanDefinitionP
 	}
 	
 	private BeanDefinitionHolder registerDefaultAnnotationHandlerMapping(Element element, Object source, ParserContext context) {
-		BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(DefaultAnnotationHandlerMapping.class);
+		BeanDefinitionBuilder builder = createBeanBuilder(DefaultAnnotationHandlerMapping.class, source);
 		builder.addPropertyValue("order", 0);
-		builder.getRawBeanDefinition().setSource(source);
 		return registerBeanDefinition(new BeanDefinitionHolder(builder.getBeanDefinition(), "defaultAnnotationHandlerMapping"), context);
 	}
 
 	private BeanDefinitionHolder registerAnnotationMethodHandlerAdapter(Element element, Object source, ParserContext context) {
-		BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(AnnotationMethodHandlerAdapter.class);
+		BeanDefinitionBuilder builder = createBeanBuilder(AnnotationMethodHandlerAdapter.class, source);
-		builder.getRawBeanDefinition().setSource(source);
+		builder.addPropertyValue("webBindingInitializer", createWebBindingInitializer(element, source, context));
 		return registerBeanDefinition(new BeanDefinitionHolder(builder.getBeanDefinition(), "annotationMethodHandlerAdapter"), context);	
 	}
 
+	private BeanDefinition createWebBindingInitializer(Element element, Object source, ParserContext context) {
+		BeanDefinitionBuilder builder = createBeanBuilder(ConfigurableWebBindingInitializer.class, source);
+		if (context.getRegistry().containsBeanDefinition("conversionService")) {
+			builder.addPropertyReference("conversionService", "conversionService");
+		} else {
+			builder.addPropertyValue("conversionService", createFormattingConversionService(element, source, context));
+		}
+		return builder.getBeanDefinition();
+	}
+	
+	private BeanDefinition createFormattingConversionService(Element element, Object source, ParserContext context) {
+		BeanDefinitionBuilder builder = createBeanBuilder(FormattingConversionServiceFactoryBean.class, source);
+		return builder.getBeanDefinition();
+	}
+
 	private BeanDefinitionHolder registerBeanDefinition(BeanDefinitionHolder holder, ParserContext context) {
 		context.getRegistry().registerBeanDefinition(holder.getBeanName(), holder.getBeanDefinition());
 		return holder;
 	}
+	
+	private BeanDefinitionBuilder createBeanBuilder(Class<?> clazz, Object source) {
+		BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition(clazz);
+		builder.getRawBeanDefinition().setSource(source);
+		return builder;
+	}
 
 }

org.springframework.web.servlet/src/test/java/org/springframework/web/servlet/config/MvcNamespaceTests.java

@@ -3,11 +3,22 @@ package org.springframework.web.servlet.config;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 
+import java.util.Date;
+import java.util.Locale;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
+import org.springframework.context.i18n.LocaleContextHolder;
 import org.springframework.core.io.ClassPathResource;
+import org.springframework.format.annotation.DateTimeFormat;
+import org.springframework.format.annotation.DateTimeFormat.Style;
+import org.springframework.mock.web.MockHttpServletRequest;
+import org.springframework.mock.web.MockHttpServletResponse;
 import org.springframework.mock.web.MockServletContext;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.context.support.GenericWebApplicationContext;
 import org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter;
 import org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping;
@@ -20,10 +31,12 @@ public class MvcNamespaceTests {
 	public void setUp() {
 		container = new GenericWebApplicationContext();
 		container.setServletContext(new MockServletContext());
+		
+		LocaleContextHolder.setLocale(Locale.US);
 	}
 	
 	@Test
-	public void testDefaultConfig() {
+	public void testDefaultConfig() throws Exception {
 		XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(container);
 		reader.loadBeanDefinitions(new ClassPathResource("mvc-config.xml", getClass()));
 		assertEquals(2, container.getBeanDefinitionCount());
@@ -32,5 +45,22 @@ public class MvcNamespaceTests {
 		assertEquals(0, mapping.getOrder());
 		AnnotationMethodHandlerAdapter adapter = container.getBean("annotationMethodHandlerAdapter", AnnotationMethodHandlerAdapter.class);
 		assertNotNull(adapter);
+
+		TestController handler = new TestController();
+
+		// default web binding initializer behavior test
+		MockHttpServletRequest request = new MockHttpServletRequest();
+		request.addParameter("date", "Oct 31, 2009");
+		MockHttpServletResponse response = new MockHttpServletResponse();
+		adapter.handle(request, response, handler);
+	}
+	
+	@Controller
+	public static class TestController {
+		
+		@RequestMapping
+		public void testBind(@RequestParam @DateTimeFormat(dateStyle=Style.MEDIUM) Date date) {
+			System.out.println(date);
+		}
 	}
 }

org.springframework.web.servlet/src/test/resources/log4j.xml

@@ -15,7 +15,7 @@
 		<level value="warn" />
 	</logger>
 
-	<logger name="org.springframework.binding">
+	<logger name="org.springframework.core.convert">
 		<level value="debug" />
 	</logger>