Multiple Same HttpMessageConverter in HttpMessageConverters

[cemo]

When I was debugging for a culprit, I have noticed that there is multiple of StringHttpMessageConverter and MappingJackson2HttpMessageConverter at the end of org.springframework.boot.autoconfigure.web.HttpMessageConverters#HttpMessageConverters(boolean, java.util.Collection<org.springframework.http.converter.HttpMessageConverter<?>>)

this.converters = Collections.unmodifiableList(combined);

Can someone else also check please?

[snicoll]

with what? A vanilla Spring Boot app (which version?) or something that you customized yourself?

[cemo]

I downloaded a sample from start.spring.io with Boot 1.2.1 + Actuator + Web modules.

[wilkinsona]

The behaviour is intentional and is described in the javadoc:

Items are added just before any default converter of the same type (or at the front of the list if no default converter is found)

There's also a test that verifies the described behaviour. See gh-1293 for details of why this behaviour is necessary.

[cemo]

Actually I had searched but could not be successful. Thanks for information.