I am creating jersey rest
client with jackson pojo mapping
.
here is code spinet:
ClientConfig clientConfig = new DefaultClientConfig();
clientConfig.getClasses().add(JacksonJsonProvider.class);
clientConfig.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);
client = Client.create(clientConfig);
webResource = client.resource("url to exposed rest web service");
This code is throwing following exception at line client = Client.create(clientConfig)
Sep 01, 2014 12:42:04 PM com.sun.jersey.core.spi.component.ProviderFactory __getComponentProvider
SEVERE: The provider class, class com.sun.jersey.json.impl.provider.entity.JSONRootElementProvider$Wadl, could not be instantiated. Processing will continue but the class will not be utilized
java.lang.NoSuchFieldError: WADL_JSON
at com.sun.jersey.json.impl.provider.entity.JSONRootElementProvider$Wadl.<init>(JSONRootElementProvider.java:138)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.sun.jersey.core.spi.component.ComponentConstructor._getInstance(ComponentConstructor.java:161)
at com.sun.jersey.core.spi.component.ComponentConstructor.getInstance(ComponentConstructor.java:141)
at com.sun.jersey.core.spi.component.ProviderFactory.__getComponentProvider(ProviderFactory.java:163)
at com.sun.jersey.core.spi.component.ProviderFactory.getComponentProvider(ProviderFactory.java:134)
at com.sun.jersey.core.spi.component.ProviderServices.getComponent(ProviderServices.java:232)
at com.sun.jersey.core.spi.component.ProviderServices.getProvidersAndServices(ProviderServices.java:149)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.initReaders(MessageBodyFactory.java:153)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.init(MessageBodyFactory.java:145)
at com.sun.jersey.api.client.Client.<init>(Client.java:275)
at com.sun.jersey.api.client.Client.<init>(Client.java:150)
at com.sun.jersey.api.client.Client.create(Client.java:476)
at com.snapdeal.rnrs.client.RClient.<init>(RClient.java:29)
at com.snapdeal.rnrs.client.RestClient.main(RestClient.java:45)
Sep 01, 2014 12:42:04 PM com.sun.jersey.core.spi.component.ProviderFactory __getComponentProvider
SEVERE: The provider class, class com.sun.jersey.json.impl.provider.entity.JSONRootElementProvider$Wadl, could not be instantiated. Processing will continue but the class will not be utilized
java.lang.NoSuchFieldError: WADL_JSON
at com.sun.jersey.json.impl.provider.entity.JSONRootElementProvider$Wadl.<init>(JSONRootElementProvider.java:138)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.sun.jersey.core.spi.component.ComponentConstructor._getInstance(ComponentConstructor.java:161)
at com.sun.jersey.core.spi.component.ComponentConstructor.getInstance(ComponentConstructor.java:141)
at com.sun.jersey.core.spi.component.ProviderFactory.__getComponentProvider(ProviderFactory.java:163)
at com.sun.jersey.core.spi.component.ProviderFactory.getComponentProvider(ProviderFactory.java:134)
at com.sun.jersey.core.spi.component.ProviderServices.getComponent(ProviderServices.java:232)
at com.sun.jersey.core.spi.component.ProviderServices.getProvidersAndServices(ProviderServices.java:149)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.initWriters(MessageBodyFactory.java:171)
at com.sun.jersey.core.spi.factory.MessageBodyFactory.init(MessageBodyFactory.java:146)
at com.sun.jersey.api.client.Client.<init>(Client.java:275)
at com.sun.jersey.api.client.Client.<init>(Client.java:150)
at com.sun.jersey.api.client.Client.create(Client.java:476)
at com.snapdeal.rnrs.client.RClient.<init>(RClient.java:29)
at com.snapdeal.rnrs.client.RestClient.main(RestClient.java:45)
I am using following jars:
jackson-core-asl:1.9.13
jackson-jaxrs:1.9.13
jackson-xc:1.9.13
jersey-client:1.1.5.1
I am fed up searching google and stackoverflow
, but could not find any solution. Please suggest some solution if any one faced the same error and solved the problem.
I got the solution of the problem. It was due to jar conflicts. I change jersey-client:1.1.5.1 to jersey-client:1.18