<mvc:annotation-driven /> doesn't allow CustomPropertyEditor be co-exists [SPR-7077]

[spring-projects-issues]

Simon Wong opened SPR-7077 and commented

Although it is preferable to use conversionService rather than use the CustomEditor, in some situation, custom editor is still required (e.g. StringTrimmerEditor). The current AnnotationDrivenBeanDefinitionParser (used by MvcNamespaceHandler for <mvc:annotation-driven />) will create a ConfigurableWebBindingInitializer instance internally, which doesn't allow to register custom editors with propertyEditorRegistrars.

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Affects: 3.0 GA, 3.0.1, 3.0.2

Reference URL: http://forum.springsource.org/showthread.php?t=84267

Issue Links:

• #13290 Declaring RequestMappingHandlerAdapter before makes Spring ignore my custom WebBindingInitializer

7 votes, 12 watchers

[spring-projects-issues]

Chris Beams commented

Rossen, please see the linked forum issue as well as this new one recently submitted: http://forum.springsource.org/showthread.php?112734-Best-way-to-configer-StringTrimmerEditor-globally-using-Spring-3.1-with-Java-Config&p=373716

[spring-projects-issues]

Rossen Stoyanchev commented

We can consider supporting a propertyEditorRegistrar attribute on <annotation-driven />. A workaround which you might be aware of is using a BeanPostProcessor (code sample) or Java config in Spring 3.1 (code sample).

[spring-projects-issues]

Canny Duck commented

The link to the BeanPostProcessor code sample is broken. Can you please fix it? I want to register StringTrimmerEditor without Java config using the XML-style.

[spring-projects-issues]

Rossen Stoyanchev commented

I've corrected the link to the sample above. See the JacksonConversionServiceConfigurer class but keep in mind you might have to check for a bean of instance RequestMappingHandlerAdapter rather than AnnotationMethodHandlerAdapter depending on which one you're actually using.

[spring-projects-issues]

Canny Duck commented

Thanks for your quick reply. I would be glad if you can show me a little code example setting the StringTrimmerEditor as PropertyEditor on the RequestMappingHandlerAdapter.

[spring-projects-issues]

Canny Duck commented

This code unfortunately does not work. Any ideas?

public class DefaultBindingConfigurer implements BeanPostProcessor
{
@Override
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException
{
return bean;
}

@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException
{
    if (bean instanceof RequestMappingHandlerAdapter)
    {
        RequestMappingHandlerAdapter adapter = (RequestMappingHandlerAdapter) bean;
        WebBindingInitializer initializer = adapter.getWebBindingInitializer();
        if (initializer instanceof ConfigurableWebBindingInitializer)
        {
            ConfigurableWebBindingInitializer configurableInitializer = (ConfigurableWebBindingInitializer) initializer;
            configurableInitializer.setPropertyEditorRegistrar(new StringTrimmerRegistrar());
        }
    }
    return bean;
}

private class StringTrimmerRegistrar implements PropertyEditorRegistrar
{
    @Override
    public void registerCustomEditors(PropertyEditorRegistry registry)
    {
        registry.registerCustomEditor(String.class, new StringTrimmerEditor(true));
    }
}

}

[spring-projects-issues]

Rossen Stoyanchev commented

The forum would be a more appropriate place for this type of discussion. Please, post a question there and provide some detail around "doesn't work".

[spring-projects-issues]

Rossen Stoyanchev commented

@ControllerAdvice now available in master (and starting Spring 3.2 M2) allows defining a global @InitBinder method, which makes it possible to register PropertyEditor's in one place globally. The related issue is #13750.