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I am trying to use MultiValueMap (implementation of MultiMap) from apache collections. I am using Spring MVC’s @RequestBody annotation. However, I keep getting HTTPMediaTypeNotSupportedException. When I change the implementation to use Map of Map from Java Util, it works fine.
Any clue? Is Jackson API unable to work with anything other than core JDK Types?
A
@RequestBodyparameter is converted usingHttpMessageConverter. ForMultiValueMapyou should register a custom converter. For more details, check this and this.