Hi
For the proxy-based variant to work, one needs to have a Map jaxb
adapter available. Try using WebClient and do something like
client.get(String.class)
to get the same result you are seeing with the original code.
By the way, Jersey layer is probably interfering too, not sure how to
disable it in Grizzly, I done some experiments earlier on with Glassfish
OS edition, I ended up removing some of the Jersey related modules:
https://cwiki.apache.org/confluence/display/CXF20DOC/JAX-RS+Deployment#JAX-RSDeployment-Glassfish
Perhaps there's a better option
Cheers, Sergey
On 12/06/12 18:01, Diana ALLAM wrote:
I have a problem using the jax-rs API using the following code:
At the RESTful server I defined a Customer Service Class as follows:
@Path("/customerservice/")
public class CustomerService implements CustomerServiceInterface {
long currentId = 123;
Map<Long, Customer> customers = new HashMap<Long, Customer>();
Map<Long, Order> orders = new HashMap<Long, Order>();
public CustomerService() {
init();
}
@GET
public Map<Long, Customer> getCustomers(){
returnthis.customers;
}
@GET
@Path("/customers/{id}/")
public Customer getCustomer(@PathParam("id") String id) {
long idNumber = Long.parseLong(id);
Customer c = customers.get(idNumber);
return c;
}
...
}
At the client side, I developed two applications:
1) First one which uses the old API:
System.out.println("Sent HTTP GET request to query all customers info");
URL url1 =
newURL("http://localhost:8080/CustomerRestfullTest/jaxrs/customerservice/";);
InputStream in1 = url1.openStream();
System.out.println(getStringFromInputStream(in1));
// Sent HTTP GET request to query customer info
System.out.println("Sent HTTP GET request to query customer info having
the id 123");
URL url =
newURL("http://localhost:8080/CustomerRestfullTest/jaxrs/customerservice/customers/123";);
InputStream in = url.openStream();
System.out.println(getStringFromInputStream(in));
This one works without any error
2) Second one which uses the JAX-RS API:
CustomerServiceInterface s =
JAXRSClientFactory.create("http://localhost:8080/CustomerRestfullTest/jaxrs/";,
CustomerServiceInterface.class);
Customer m = s.getCustomer("123");
System.out.println("the result is m ID: "+ m.getId() + " m NAME:
"+m.getName());
Map<Long, Customer> map= s.getCustomers();
System.out.println("Map is "+map);
which gives an error when executing s.getCustomers().
I can't understand the cause of this error. I tried to put a path to the
method getCustomers() but it doesn't solve the problem.
Any idea please?
The result of the execution is :
the result is m ID: 123 m NAME: John
Exception in thread "main" Status : 500
Headers :
Content-Type : text/plain
Transfer-Encoding : chunked
Date : Tue, 12 Jun 2012 16:55:52 GMT
Connection : close
X-Powered-By : Servlet/3.0
Server : GlassFish Server Open Source Edition 3.0.1
Error message :
javax.ws.rs.WebApplicationException: java.lang.NullPointerException
at
org.apache.cxf.jaxrs.provider.DataBindingProvider.writeTo(DataBindingProvider.java:101)
at
com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:289)
at
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1029)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:941)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:932)
at
com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:384)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:451)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:632)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at
org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
at
com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
at
org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:226)
at
com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:165)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
at
com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
at
com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
at
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
at
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
at
com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
at
com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
at
com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at
com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.NullPointerException
at
org.apache.cxf.jaxrs.provider.DataBindingProvider.writeToWriter(DataBindingProvider.java:106)
at
org.apache.cxf.jaxrs.provider.DataBindingProvider.writeTo(DataBindingProvider.java:99)
... 32 more
at
org.apache.cxf.jaxrs.client.ClientProxyImpl.checkResponse(ClientProxyImpl.java:250)
at
org.apache.cxf.jaxrs.client.ClientProxyImpl.handleResponse(ClientProxyImpl.java:517)
at
org.apache.cxf.jaxrs.client.ClientProxyImpl.doChainedInvocation(ClientProxyImpl.java:487)
at
org.apache.cxf.jaxrs.client.ClientProxyImpl.invoke(ClientProxyImpl.java:188)
at $Proxy18.getCustomers(Unknown Source)
at demo.client.Client1.main(Client1.java:17)
On 12 juin 2012, at 15:49, Sergey Beryozkin wrote:
Hi
On 12/06/12 14:33, Diana ALLAM wrote:
Hello,
Actually I am using the following code example to request a POST
method on my Restful service:
-----------------------------------------------------------------------------------------------------------------------------------------------
System.out.println("Sent HTTP POST request to add customer");
inputFile = client.getClass().getResource("add_customer.xml").getFile();
resolver = new URIResolver(inputFile);
input = new File(resolver.getURI());
PostMethod post = new
PostMethod("http://localhost:8080/CustomerRestfullTest/jaxrs/customerservice/customers";);
post.addRequestHeader("Accept" , "text/xml");
entity = new FileRequestEntity(input, "text/xml; charset=ISO-8859-1");
post.setRequestEntity(entity);
httpclient = new HttpClient();
try {
int result = httpclient.executeMethod(post);
System.out.println("Response status code: " + result);
System.out.println("Response body: ");
System.out.println(post.getResponseBodyAsString());
} finally {
// Release current connection to the connection pool once you are
// done
post.releaseConnection();
}
-----------------------------------------------------------------------------------
My request is thus build by using an XML data file "add-customer.xml"
where I can put for example:
<Customer>
<id>1</id>
<name>toto</name>
</Student>
I would like to do a similar request but instead of using the xml
file I prefer to have a java class,
"Customer", and to do then something like that:
Customer c = new Customer(1, "toto");
PostMethod post = new
PostMethod("http://localhost:8080/CustomerRestfullTest/jaxrs/customerservice/customers";);
post.setRequest(c);
Is there a way to do that in cxf?
The above is an old example code which uses HttpClient, try this api
instead:
http://cxf.apache.org/docs/jax-rs-client-api.html
Cheers, Sergey
Regards,
Diana
--
Sergey Beryozkin
Talend Community Coders
http://coders.talend.com/
Blog: http://sberyozkin.blogspot.com
--
Sergey Beryozkin
Talend Community Coders
http://coders.talend.com/
Blog: http://sberyozkin.blogspot.com
