CODEWITHSUNDEEP
jsonspringspring-mvcjackson
chubbsondubs
chubbsondubs

Reputation: 38865

MessageConverter not being called

I have a custom MessageConverter registered in spring with the following configuration:

<bean id="jsonHttpMessageConverter" class="com.eventwiz.web.util.ServiceResponseHttpMessageConverter">
    <property name="supportedMediaTypes" value="application/json"/>
</bean>

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <property name="messageConverters">
      <util:list id="beanList">
        <ref bean="jsonHttpMessageConverter"/>
      </util:list>
    </property>
</bean>

However, it's not being called as I confirmed that with a breakpoint in my code. ServiceResponseHttpMessageConverter subclasses MappingJacksonHttpMessageConverter and overrides writeInternal() method. I've even tried overriding MessageConverter.supports() just to see if that was being called and it wasn't. Any ideas what's going on?

Upvotes: 0

Views: 835

Answers (1)

Biju Kunjummen
Biju Kunjummen

Reputation: 49935

The issue, as was found based on an answer from the author was the <mvc:annotation-driven/> tag which registers its own handlerAdapter, so if another handlerAdapter is added to the Spring MVC configuration file with converters added to this adapter, the custom adapters will not take effect. The fix is to either register the httpMessageConverters through <mvc:message-converters... tag under <mvc:annotation-driven or removing <mvc:annotation-driven and having the custom handleradapter with the httpmessageconverter registered under it.

Upvotes: 1

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