[CXF] RESTful HTTP Binding Demo : 500 Internal Server Error
Bonsoir.
J'ai essayé de faire fonctionner l'exemple "RESTful HTTP Binding Demo" fourni avec le projet Apache CXF, décrit un peu sur cette page : http://cwiki.apache.org/CXF20DOC/http-binding.html
Et également sur la page User Guide : http://cwiki.apache.org/CXF20DOC/jax-rs.html
L'exemple est disponible, une fois le projet téléchargé et décompressé, ici :
./apache-cxf-2.1.4/samples/restful_http_binding/
Pour récupérer les données en passant par l'une de ces urls, je n'ai pas de soucis :
http://localhost:8080/xml/customers
http://localhost:8080/json/customers
http://localhost:8080/xml/customers/123
http://localhost:8080/json/customers/123
En revanche, quand il s'agit d'utiliser le POST, c'est une autre affaire. Avec l'ajout d'un "customer" en json, ça passe :
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| wget --post-file add.json http://localhost:8080/json/customers
--18:51:50-- http://localhost:8080/json/customers
=> `customers'
Résolution de localhost... 127.0.0.1
Connexion vers localhost|127.0.0.1|:8080... connecté.
requête HTTP transmise, en attente de la réponse... 200 OK
Longueur: non spécifié
[ <=> ] 0 --.--K/s
18:51:50 (0.00 B/s) - « customers » sauvegardé [0] |
Par contre, avec le fonctionnement XML, j'ai une erreur 500 dans les deux cas :
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| wget --post-file update.xml http://localhost:8080/xml/customers/123
--18:52:06-- http://localhost:8080/xml/customers/123
=> `123'
Résolution de localhost... 127.0.0.1
Connexion vers localhost|127.0.0.1|:8080... connecté.
requête HTTP transmise, en attente de la réponse... 500 Internal Server Error
18:52:06 ERREUR 500: Internal Server Error. |
Code:
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| $ wget --post-file add.xml http://localhost:8080/xml/customers
--18:17:32-- http://localhost:8080/xml/customers
=> `customers.2'
Résolution de localhost... 127.0.0.1
Connexion vers localhost|127.0.0.1|:8080... connecté.
requête HTTP transmise, en attente de la réponse... 500 Internal Server Error
18:17:32 ERREUR 500: Internal Server Error. |
Je ne comprends pas d'où vient cette différence de traitement, enfin, surtout cette erreur 500.
Voici le code de la classe Server.java d'où sont lancés les deux services :
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| /**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package demo.restful.server;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLOutputFactory;
import org.apache.cxf.Bus;
import org.apache.cxf.BusFactory;
import org.apache.cxf.binding.http.HttpBindingFactory;
import org.apache.cxf.helpers.IOUtils;
import org.apache.cxf.jaxws.JaxWsServerFactoryBean;
import org.apache.cxf.message.ExchangeImpl;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageImpl;
import org.apache.cxf.service.invoker.BeanInvoker;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.transport.Conduit;
import org.apache.cxf.transport.Destination;
import org.apache.cxf.transport.DestinationFactory;
import org.apache.cxf.transport.DestinationFactoryManager;
import org.apache.cxf.transport.MessageObserver;
import org.codehaus.jettison.mapped.MappedXMLInputFactory;
import org.codehaus.jettison.mapped.MappedXMLOutputFactory;
public final class Server {
private Server() { }
public static void main(String[] args) throws Exception {
CustomerServiceImpl bs = new CustomerServiceImpl();
System.out.println("AVANT SOAP SERVICE");
createSoapService(bs);
System.out.println("AVANT REST SERVICE");
createRestService(bs);
System.out.println("AVANT CREATION JSON REST SERVICE");
createJsonRestService(bs);
serveHTML();
System.out.println("Started CustomerService!");
System.out.println("Server ready...");
Thread.sleep(5 * 60 * 1000);
System.out.println("Server exiting");
System.exit(0);
}
private static void createRestService(Object serviceObj) {
// Build up the server factory bean
JaxWsServerFactoryBean sf = new JaxWsServerFactoryBean();
sf.setServiceClass(CustomerService.class);
// Use the HTTP Binding which understands the Java Rest Annotations
sf.setBindingId(HttpBindingFactory.HTTP_BINDING_ID);
sf.setAddress("http://localhost:8080/xml/");
sf.getServiceFactory().setInvoker(new BeanInvoker(serviceObj));
// Turn the "wrapped" style off. This means that CXF won't generate
// wrapper XML elements and we'll have prettier XML text. This
// means that we need to stick to one request and one response
// parameter though.
sf.getServiceFactory().setWrapped(false);
sf.create();
}
private static void createJsonRestService(Object serviceObj) {
// Build up the server factory bean
JaxWsServerFactoryBean sf = new JaxWsServerFactoryBean();
sf.setServiceClass(CustomerService.class);
// Use the HTTP Binding which understands the Java Rest Annotations
sf.setBindingId(HttpBindingFactory.HTTP_BINDING_ID);
sf.setAddress("http://localhost:8080/json");
sf.getServiceFactory().setInvoker(new BeanInvoker(serviceObj));
// Turn the "wrapped" style off. This means that CXF won't generate
// wrapper JSON elements and we'll have prettier JSON text. This
// means that we need to stick to one request and one response
// parameter though.
sf.getServiceFactory().setWrapped(false);
// Tell CXF to use a different Content-Type for the JSON endpoint
// This should probably be application/json, but text/plain allows
// us to view easily in a web browser.
Map<String, Object> properties = new HashMap<String, Object>();
properties.put("Content-Type", "text/plain");
// Set up the JSON StAX implementation
Map<String, String> nstojns = new HashMap<String, String>();
nstojns.put("http://demo.restful.server", "acme");
MappedXMLInputFactory xif = new MappedXMLInputFactory(nstojns);
properties.put(XMLInputFactory.class.getName(), xif);
MappedXMLOutputFactory xof = new MappedXMLOutputFactory(nstojns);
properties.put(XMLOutputFactory.class.getName(), xof);
sf.setProperties(properties);
sf.create();
}
private static void createSoapService(Object serviceObj) {
JaxWsServerFactoryBean sf = new JaxWsServerFactoryBean();
sf.setServiceClass(CustomerService.class);
sf.setAddress("http://localhost:8080/soap");
sf.getServiceFactory().setInvoker(new BeanInvoker(serviceObj));
sf.getServiceFactory().setWrapped(false);
sf.create();
}
/**
* Serve out a static HTTP file because the Javascript XMLHttpRequest can
* only work within one domain.
*/
private static void serveHTML() throws Exception {
Bus bus = BusFactory.getDefaultBus();
DestinationFactoryManager dfm = bus.getExtension(DestinationFactoryManager.class);
DestinationFactory df = dfm
.getDestinationFactory("http://cxf.apache.org/transports/http/configuration");
EndpointInfo ei = new EndpointInfo();
ei.setAddress("http://localhost:8080/test.html");
Destination d = df.getDestination(ei);
d.setMessageObserver(new MessageObserver() {
public void onMessage(Message message) {
try {
// HTTP seems to need this right now...
ExchangeImpl ex = new ExchangeImpl();
ex.setInMessage(message);
Conduit backChannel = message.getDestination().getBackChannel(message, null, null);
MessageImpl res = new MessageImpl();
res.put(Message.CONTENT_TYPE, "text/html");
backChannel.prepare(res);
OutputStream out = res.getContent(OutputStream.class);
FileInputStream is = new FileInputStream("test.html");
IOUtils.copy(is, out, 2048);
out.flush();
out.close();
is.close();
backChannel.close(res);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
} |
Est-ce le changement de "Content-Type" qui différencie les deux fonctionnements ?
Pour information, je n'ai pas touché au code fournit par Apache. Quelqu'un a-t-il déjà eu cette erreur ? Savez-vous l'origine du porblème d'erreur interne ?
Merci à tous.
