How do I tell the Jersey Client to do the equivalent of @JsonIgnoreProperties(ignoreUnknown = true) on every class it deserializes?

jackson, java, jaxb, jersey-1.0, jersey-client

Solution

You would need to configure this by instantiating and configuring the `JacksonJsonProvider` for the Jersey `Client`.

Jersey V2.x:

JacksonJsonProvider jacksonJsonProvider = 
    new JacksonJaxbJsonProvider()
        .configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);

client.register(jacksonJsonProvider);

Jersey V1.x:

DefaultClientConfig clientConfig = new DefaultClientConfig();
JacksonJsonProvider jacksonJsonProvider = new JacksonJaxbJsonProvider().
    configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
clientConfig.getSingletons().add(jacksonJsonProvider);

Worth noting is that the underlying issue is that your JSON contains the field "empty" ... I'm assuming it's getting there because you're serializing that same POJO. Wouldn't annotating that `isEmpty()` method to be ignored for serialization if you actually don't want it in the JSON be better?

Problem

I have a class that I'm using the Jersey Client to deserialize. This class has a method that looks like this: ``` public boolean isEmpty() { return (code == null && label == null && codeSystem == null && codeSystemLabel == null && description == null && concept == null && alternateCode == null ); ``` There is no setter. As-is, this will throw this exception: ``` com.sun.jersey.api.client.ClientHandlerException: org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field "empty" (Class com.app.models.CodedElementModel), not marked as ignorable at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@3b927d51; line: 1, column: 270] (through reference chain: com.app.models.LabOrderModel["code"]->com.app.models.CodedElementModel["empty"]) ``` I've read this article, and it turns out I can fix this by putting this annotation on the `CodedElementModel` class: `@JsonIgnoreProperties(ignoreUnknown = true)`. The problem is I have a lot of methods throwing this exception. Is there a way to configure the Jersey Client to act as if `@JsonIgnoreProperties(ignoreUnknown = true)` is set on every class so I don't have to annotate them by hand? I don't want to have to change ~30 files by adding this annotation manually. This will prevent such errors in the future if someone adds a getter without a setter. Here's how I'm creating my Jersey Client: ``` DefaultClientConfig clientConfig = new DefaultClientConfig(); clientConfig.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE); Client client = Client.create(clientConfig); ``` I feel like that `clientConfig` may have a setting to do this, but I'm not sure how to find it.

Original source