Make it easier to remove items from HttpMessageConverters

[philwebb]

Currently it isn't very easy to remove an item from HttpMessageConverters. See http://stackoverflow.com/questions/23480517/spring-hateoas-w-spring-boot-jaxb-marshal-error-when-returning-a-resourcest/23489883?noredirect=1#comment39943077_23489883

[drdamour]

I'm at a lost as to how to actually use this new functionality. Can you provide an example? Should i be registering a new HttpMessageConverters bean in a @configuration class?

[philwebb]

@drdamour Yes, you need to register the HttpMessageConverters as a bean and override postProcessConverters.

See

spring-boot/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/HttpMessageConvertersTests.java

Lines 105 to 113 in 34cbcf5

	protected List<HttpMessageConverter<?>> postProcessConverters(
	List<HttpMessageConverter<?>> converters) {
	for (Iterator<HttpMessageConverter<?>> iterator = converters.iterator(); iterator
	.hasNext();) {
	if (iterator.next() instanceof Jaxb2RootElementHttpMessageConverter) {
	iterator.remove();
	}
	}
	return converters;

for an example that removes an item.