Since 3.0-beta-5 release, resteasy comes with built in support for YAML using the SnakeYAML library. To enable YAML support, you need to drop in the SnakeYaml 1.8 jar and the resteasy-yaml-provider.jar (whatever the current version is) in RestEASY's classpath.

SnakeYaml jar file can either be downloaded from Google code at http://code.google.com/p/snakeyaml/downloads/list

Or if you use maven, the SnakeYaml jar is available through SonaType public repositories and included using this dependency:

 <dependency>
<groupId>org.yaml</groupId>
<artifactId>snakeyaml</artifactId>
<version>1.8</version>
 </dependency>
      

When starting resteasy look out in the logs for a line stating that the YamlProvider has been added - this indicates that resteasy has found the Jyaml jar:

2877 Main INFO org.jboss.resteasy.plugins.providers.RegisterBuiltin - Adding YamlProvider

The Yaml provider recognises three mime types:

This is an example of how to use Yaml in a resource method.

 import javax.ws.rs.Consumes;
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 import javax.ws.rs.Produces;

 @Path("/yaml")
 public class YamlResource
 {

@GET
@Produces("text/x-yaml")
public MyObject getMyObject() {
   return createMyObject();
}
...
 }