I'm implementing a rest client consuming json data using the Jersey Client API. I don't really have much experience with JAXB, and especially not in combination with JSON. I've followed the example provided here and registered a JAXBContext.
Everything works like a charm when I execute the project using mvn exec:java
.
I use the Maven assembly plugin to create a single JAR. When I use this JAR file to run the client the JAXBContext does not appear to be used at all. Which results in:
"com.sun.jersey.api.client.ClientHandlerException: A m开发者_Python百科essage body reader for Java class org.digitest.model.Account, and Java type class org.digitest.model.Account, and MIME media type application/json was not found"
Does anyone has any idea when I might be doing wrong? Even vague tips on how to proceed with debugging will be greatly appreciated!
@Provider
public final class ModelJAXBContextResolver implements ContextResolver<JAXBContext> {
private final JAXBContext context;
private final Set<Class> types;
private final Class[] cTypes = {
Account.class, ...
};
public ModelJAXBContextResolver() throws Exception {
this.types = new HashSet(Arrays.asList(cTypes));
this.context = new JSONJAXBContext(JSONConfiguration.natural().build(), cTypes);
throw new Exception("Json context is loaded");
}
@Override
public JAXBContext getContext(Class<?> objectType) {
return (types.contains(objectType)) ? context : null;
}
}
Client setup:
DefaultApacheHttpClientConfig config = new DefaultApacheHttpClientConfig();
config.getProperties().put(DefaultApacheHttpClientConfig.PROPERTY_HANDLE_COOKIES, true);
config.getClasses().add(ModelJAXBContextResolver.class);
client = ApacheHttpClient.create(config);
Account:
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Account {
...
}
Finally! This is probably the most annoying thing I've had to cope with this year!
Adding 1.4-SNAPSHOT versions of the jersey dependencies solved it.
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-bundle</artifactId>
<version>1.4-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>1.4-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.sun.jersey.contribs</groupId>
<artifactId>jersey-apache-client</artifactId>
<version>1.4-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2.2-SNAPSHOT</version>
</dependency>
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