Read http post headers - http

Question

Hi I am having trouble I am trying to learn restful services.I created a web service using jax-rs which is shown below
#Path("/users")
public class Welcome {
#POST
#Consumes("text/xml")
#Produces("text/xml")
public Response welcome(String incomingXML){
return Response.status(200).entity("timestamp : " + incomingXML).build();
}
}
I use the following test client to test the service
public class TestService {
public static void main(String args[]) throws ParserConfigurationException, SAXException, IOException {
ClientConfig config = new DefaultClientConfig();
Client client=Client.create(config);
WebResource service=client.resource(getBaseURI());
String urlString = "http://localhost:8080/JaXRSDemo/rest/users";
URL url = new URL( urlString );
HttpURLConnection con = (HttpURLConnection) url.openConnection();
// set up url connection to get retrieve information back
con.setRequestMethod( "POST" );
con.setDoInput( true );
// stuff the Authorization request header
byte[] encodedPassword = ( userName + ":" + password ).getBytes();
con.setRequestProperty( "Authorization",encodedPassword.toString() );
Customer customer=new Customer();
customer.setName("noobstre");
customer.setPin(123455);
ClientResponse response=service.path("rest").path("users").type(MediaType.APPLICATION_XML).post(ClientResponse.class,customer);
System.out.println(" response " + response.getEntity(String.class));
}
private static URI getBaseURI() {
return UriBuilder.fromUri("http://localhost:8080/JaXRSDemo").build();
}
}
I want to use the password in the header at the server side and do a lookup with the database.The problem I am facing is how do I read the headers at the server.

Answer 1

I'm not very familiar with Jax-RS, but you might use the following methods to get the header information you're looking for:
1.) Use #HeaderParam
/**Server side******/
#Path("/users")
public class Welcome {
#POST
#Consumes("text/xml")
#Produces("text/xml")
public Response welcome(String incomingXML, #HeaderParam("Authorization") String authString)
{
//Use authString here
return Response.status(200).entity("timestamp : " + incomingXML).build();
}
}
2.) Use #Context
/**Server side******/
#Path("/users")
public class Welcome {
#POST
#Consumes("text/xml")
#Produces("text/xml")
public Response welcome(String incomingXML, #Context HttpHeaders headers)
{
//Get Authorization Header
String authString = headers.getRequestHeader("Authorization").get(0);
return Response.status(200).entity("timestamp : " + incomingXML).build();
}
}
Hope this helps!

Answer 2

I solved it using Jersey Client
//clientside
ClientConfig config = new DefaultClientConfig();
Client client = Client.create(config);
final String userName = "admin";
final String password = "admin";
String cred = userName + ":" + password;
WebResource service = client.resource(getBaseURI());
Customer customer = new Customer();
customer.setName("noob");
customer.setPin(123455);
ClientResponse response = service.path("rest").path("users")
.accept(MediaType.APPLICATION_XML)
.header("Authorization", cred)
.post(ClientResponse.class, customer);
System.out.println(" response " + response.getEntity(String.class));
At the server side
#Path("/users")
public class Welcome {
#POST
#Consumes(MediaType.APPLICATION_XML)
#Produces(MediaType.APPLICATION_XML)
public Response welcome(String incomingXML, #Context HttpHeaders headers) {
String s = headers.getRequestHeaders().getFirst("authorization");
return Response.status(200).entity("timestamp : " + incomingXML + s)
.build();
}
}