File upload using Dropwizard 0.8.0-rc2

Dropwizard 0.7.1 used com.sun.jersey:jersey-server:jar:1.18.1, where version 0.8.0 comes with org.glassfish.jersey.core:jersey-server:jar:2.15.

Before, when uploading files, it was enough to add the com.sun.jersey.contribs:jersey-multipart dependency like so:

<dependency>
	<groupId>com.sun.jersey.contribs</groupId>
	<artifactId>jersey-multipart</artifactId>
	<version>1.18.3</version>
</dependency>

This will not work anymore and throws the somewhat cryptic exception: java.lang.IllegalArgumentException: The MultiPartConfig instance we expected is not present. Have you registered the MultiPartConfigProvider class?

The correct dependency should be

<dependency>
	<groupId>org.glassfish.jersey.media</groupId>
	<artifactId>jersey-media-multipart</artifactId>
	<version>2.15</version>
</dependency>

Update your imports and you’re good to go. The same resource will suffice.

@Timed
@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
public void fileUploaded(@FormDataParam("file") final InputStream inputStream,
						 @FormDataParam("file") final FormDataContentDisposition contentDispositionHeader) {
	storeImage(inputStream);
}

Don’t forget to register the MultiPartFeature in your Application’s run method:

environment.jersey().register(MultiPartFeature.class);

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