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The JSON plugin

Excerpt
provides a "json" result type that serializes actions into JSON

. The serialization process is recursive, meaning that the whole object graph, starting on the action class (base class not included) will be serialized (root object can be customized using the "root" attribute). If the interceptor is used, the action will be populated from the JSON content in the request, these are the rules of the interceptor:

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By default Content-Type of value application/json is recognised to bu be used for de-serialisation and application/json-rpc to execute SMD processing. You can override those settings be defining jsonContentType and jsonRpcContentType params, see example:

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