I am trying to move a JAX-RS application from 1.0 to 1.5 but I am getting all
sort of errors. The first error I got was: "No message body writer has been
found for response class". So I came to the forum and read that setting the
providers in system.properties and putting the Jackson jars in TomEE/lib is
not the appropiate way anymore. Below are the steps that I am following,
please let me know where is my error:
Setup Jackson in TomEE 1.5
1) Copy jackson-mapper-asl-1.9.9.jar, jackson-core-asl-1.9.9.jar,
jackson-jaxrs-1.9.9.jar in MyWebApp/lib folder
2) Under the WEB-INF folder add the following files:
resources.xml
-------------
<resources>
<Service id="jsonProvider"
class-name="org.codehaus.jackson.jaxrs.JacksonJsonProvider" />
<Service id="jaxbProvider"
class-name="org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider"
/>
</resources>
openejb-jar.xml
---------------
<openejb-jar xmlns="http://www.openejb.org/xml/ns/openejb-jar-1.1";>
<pojo-deployment
class-name="com.palda.faclpt.util.JacksonContextResolver">
<properties>
cxf.jax-rs.providers = jsonProvider, jaxbProvider
</properties>
</pojo-deployment>
</openejb-jar>
Questions
*1) Which namespace for openejb-jar-1.1 should I use?*
I found that newer versions do not support the pojo-deployment element
*2) Which is the use of the class specified in the pojo-deployment?*
In TomEE I did not have to implement a Provider class. I did do it,
though, in order to customize the date format on the generated JSON. I am
not sure if this is the class that should be used for the pojo-deployment
element
The class that I am using as Provider is:
@Provider
@Produces(MediaType.APPLICATION_JSON)
public class JacksonContextResolver implements ContextResolver<ObjectMapper>
{
private ObjectMapper objectMapper;
public JacksonContextResolver() throws Exception {
this.objectMapper = new
ObjectMapper().configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES,
false);
}
public ObjectMapper getContext(Class<?> objectType) {
objectMapper.configure(SerializationConfig.Feature.WRITE_DATES_AS_TIMESTAMPS,
false);
return objectMapper;
}
}
Thanks,
Alberto
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