You have probably a conflict somewhere, check your jar files and see if there are no duplicate classes. Use Tattletale to locate the problem

Caused by: java.lang.NoSuchMethodError: javax.ws.rs.ext.Providers.getContextResolver(Ljava/lang/Class;Ljavax/ws/rs/core/MediaType;)Ljavax/ws/rs/ext/ContextResolver; at com.sun.jersey.impl.provider.entity.AbstractJAXBProvider.(AbstractJAXBProvider.java:81) at com.sun.jersey.impl.provider.entity.AbstractRootElementProvider.(AbstractRootElementProvider.java:67) at com.sun.jersey.impl.provider.entity.XMLRootElementProvider.(XMLRootElementProvider.java:66) at com.sun.jersey.impl.provider.entity.XMLRootElementProvider$App.(XMLRootElementProvider.java:72) ... 41 more

You have probably a conflict somewhere, check your jar files and see if there are no duplicate classes. Use Tattletale to locate the problem

**Caused by: java.lang.NoSuchMethodError: javax.ws.rs.ext.Providers.getContextResolver(Ljava/lang/Class;Ljavax/ws/rs/core/MediaType;)Ljavax/ws/rs/ext/ContextResolver;** at com.sun.jersey.impl.provider.entity.AbstractJAXBProvider.<init>(AbstractJAXBProvider.java:81) at com.sun.jersey.impl.provider.entity.AbstractRootElementProvider.<init>(AbstractRootElementProvider.java:67) at com.sun.jersey.impl.provider.entity.XMLRootElementProvider.<init>(XMLRootElementProvider.java:66) at com.sun.jersey.impl.provider.entity.XMLRootElementProvider$App.<init>(XMLRootElementProvider.java:72) ... 41 more