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Move feed message converters ahead of jackson/jaxb2

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The Atom/RSS message converters are now registered ahead of the
Jackson and the JAXB2 message converters by default. Since the Atom
and RSS converters convert to and from very specific object types
Feed and Channel respectively, that shouldn't introduce any regressions
and will work more intuitively when the requested media type is "*/*".

Issue: SPR-9054
This commit is contained in:
Rossen Stoyanchev
2012-07-06 16:00:22 -04:00
parent 2b4a516980
commit e860fa9a8b
4 changed files with 37 additions and 24 deletions
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16
spring-webmvc/src/main/java/org/springframework/web/servlet/config/AnnotationDrivenBeanDefinitionParser.java
View File

@@ -302,14 +302,17 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
messageConverters.setSource(source);
messageConverters.add(createConverterBeanDefinition(ByteArrayHttpMessageConverter.class, source));
RootBeanDefinition stringConverterDef = createConverterBeanDefinition(StringHttpMessageConverter.class,
source);
RootBeanDefinition stringConverterDef = createConverterBeanDefinition(StringHttpMessageConverter.class, source);
stringConverterDef.getPropertyValues().add("writeAcceptCharset", false);
messageConverters.add(stringConverterDef);
messageConverters.add(createConverterBeanDefinition(ResourceHttpMessageConverter.class, source));
messageConverters.add(createConverterBeanDefinition(SourceHttpMessageConverter.class, source));
messageConverters.add(createConverterBeanDefinition(XmlAwareFormHttpMessageConverter.class, source));
if (romePresent) {
messageConverters.add(createConverterBeanDefinition(AtomFeedHttpMessageConverter.class, source));
messageConverters.add(createConverterBeanDefinition(RssChannelHttpMessageConverter.class, source));
}
if (jaxb2Present) {
messageConverters
.add(createConverterBeanDefinition(Jaxb2RootElementHttpMessageConverter.class, source));
@@ -320,16 +323,13 @@ class AnnotationDrivenBeanDefinitionParser implements BeanDefinitionParser {
else if (jacksonPresent) {
messageConverters.add(createConverterBeanDefinition(MappingJacksonHttpMessageConverter.class, source));
}
if (romePresent) {
messageConverters.add(createConverterBeanDefinition(AtomFeedHttpMessageConverter.class, source));
messageConverters.add(createConverterBeanDefinition(RssChannelHttpMessageConverter.class, source));
}
}
return messageConverters;
}
private RootBeanDefinition createConverterBeanDefinition(Class<? extends HttpMessageConverter> converterClass,
Object source) {
private RootBeanDefinition createConverterBeanDefinition(
Class<? extends HttpMessageConverter> converterClass, Object source) {
RootBeanDefinition beanDefinition = new RootBeanDefinition(converterClass);
beanDefinition.setSource(source);
beanDefinition.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);

36
spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/WebMvcConfigurationSupport.java
View File

@@ -138,6 +138,20 @@ import org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolv
*/
public class WebMvcConfigurationSupport implements ApplicationContextAware, ServletContextAware {
private static final boolean jaxb2Present =
ClassUtils.isPresent("javax.xml.bind.Binder", WebMvcConfigurationSupport.class.getClassLoader());
private static final boolean jackson2Present =
ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", WebMvcConfigurationSupport.class.getClassLoader()) &&
ClassUtils.isPresent("com.fasterxml.jackson.core.JsonGenerator", WebMvcConfigurationSupport.class.getClassLoader());
private static final boolean jacksonPresent =
ClassUtils.isPresent("org.codehaus.jackson.map.ObjectMapper", WebMvcConfigurationSupport.class.getClassLoader()) &&
ClassUtils.isPresent("org.codehaus.jackson.JsonGenerator", WebMvcConfigurationSupport.class.getClassLoader());
private static boolean romePresent =
ClassUtils.isPresent("com.sun.syndication.feed.WireFeed", WebMvcConfigurationSupport.class.getClassLoader());
private ServletContext servletContext;
private ApplicationContext applicationContext;
@@ -435,21 +449,19 @@ public class WebMvcConfigurationSupport implements ApplicationContextAware, Serv
messageConverters.add(new ResourceHttpMessageConverter());
messageConverters.add(new SourceHttpMessageConverter<Source>());
messageConverters.add(new XmlAwareFormHttpMessageConverter());
ClassLoader classLoader = getClass().getClassLoader();
if (ClassUtils.isPresent("javax.xml.bind.Binder", classLoader)) {
messageConverters.add(new Jaxb2RootElementHttpMessageConverter());
}
if (ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader)) {
messageConverters.add(new MappingJackson2HttpMessageConverter());
}
else if (ClassUtils.isPresent("org.codehaus.jackson.map.ObjectMapper", classLoader)) {
messageConverters.add(new MappingJacksonHttpMessageConverter());
}
if (ClassUtils.isPresent("com.sun.syndication.feed.WireFeed", classLoader)) {
if (romePresent) {
messageConverters.add(new AtomFeedHttpMessageConverter());
messageConverters.add(new RssChannelHttpMessageConverter());
}
if (jaxb2Present) {
messageConverters.add(new Jaxb2RootElementHttpMessageConverter());
}
if (jackson2Present) {
messageConverters.add(new MappingJackson2HttpMessageConverter());
}
else if (jacksonPresent) {
messageConverters.add(new MappingJacksonHttpMessageConverter());
}
}
/**