Spring 3.x JSON status 406 “characteristics not acceptable according to the request “accept” headers ()”

I have also just experienced this same issue. It would appear it is an issue with the latest 3.2.0.RELEASE, as I previously had 3.1.2.RELEASE and it all worked. After changing to 3.2.0.RELEASE it breaks. Have tested with 3.1.3.RELEASE and that works fine. So for now I would suggest rolling back to 3.1.3.RELEASE

EDIT: Thanks to another post on this site that linked to the following location: http://static.springsource.org/spring-framework/docs/3.2.x/spring-framework-reference/html/mvc.html#mvc-config-content-negotiation

I’ve now got it working by disabling the getting of media type based on the extension of the requested path. This can be done by the following:

<mvc:annotation-driven content-negotiation-manager="contentNegotiationManager"/>
<bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
    <!-- Turn off working out content type based on URL file extension, should fall back to looking at the Accept headers -->
    <property name="favorPathExtension" value="false" />
</bean>

And specify version 3.2 for all the xsd schema locations.

And this is using the following jackson jars:

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>2.1.2</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.1.2</version>
</dependency>