how to handle Json body in post request in jax-rs - json

Question

I have a project (homework) about JAX-RS. I'm working with NetBeans, Jersey and Tomcat.
This is my "User" class for main object in the system.
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
#XmlRootElement(name="user")
public class User {
//#XmlElement
//public int id ;
#XmlElement
public String username;
#XmlElement
public String fullname;
#XmlElement
public String gender;
#XmlElement
public String birthDate;
public User(){
}
public User(String username,String fullname, String gender,String birthDate){
//this.id = id;
this.username = username;
this.fullname = fullname;
this.gender = gender;
this.birthDate = birthDate;
}
}
This is my "JAXBContextResolver" Class
import com.sun.jersey.api.json.JSONConfiguration;
import com.sun.jersey.api.json.JSONJAXBContext;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;
import javax.xml.bind.JAXBContext;
#Provider
public class JAXBContextResolver implements ContextResolver<JAXBContext>{
private JAXBContext context;
private Class[] types = {User.class};
public JAXBContextResolver() throws Exception {
this.context =
new JSONJAXBContext( JSONConfiguration.mapped().build(), types);
}
#Override
public JAXBContext getContext(Class<?> objectType) {
for (Class type : types) {
if (type == objectType) {
return context;
}
}
return null;
}
}
And this is my post method in the "UserService" class
#POST
#Consumes(MediaType.APPLICATION_JSON)
#Produces(MediaType.APPLICATION_JSON)
public List<User> createNewUser(User tUser) {
List<User> list = new ArrayList<User>();
list.add(tUser);
return list;
}
When I am trying a post new user in the localhost with RESTClient (Firefox add-ons) my request body is a json input like that:
{"user":{"username":"blabla","fullname":"blabla","gender":"M","birthDate":"05.01.1978"}}
In the post method (in the UserService class) must the variable "tUser" automatically filled with the coming input ? "tUser" variable shows null elements in it in the debugging mode like that:
If I know wrong could somebody correct me please? Why this values shows null? Must not them shows "blabla" - "blabla" - "M" - "05.01.1878" ? Could you help me please?

Answer 1

I solved this problem; In the JAXBContextResolver class I change the method like that :
public JAXBContextResolver() throws Exception {
this.context =
new JSONJAXBContext( JSONConfiguration.mapped().rootUnwrapping(false).build(), types);
}
The difference with the first one is adding "rootUnwrapping(false)" expression.

Answer 2

#XmlRootElement is not working in your example. Send
{"username":"blabla","fullname":"blabla","gender":"M","birthDate":"05.01.1978"}
instead
EDIT
1)
public List<User> createNewUser(Request tUser)
and class
class Request
{
public User user;
}
2)
public List<User> createNewUser(String tUser)
and convert String to object using google-gson or jackson json processor