Login in UME using UME API

[former_member600934]

I'm trying to connect to a SAP AS JAVA System and Manipulate the UME. I have a EJB WebService (HelloWorldEJB) in the Java System, I'm trying to hit HelloWorldEJB from an External application's (AppService) Restful service.

So the flow is like: UI5 Application (AppWeb) --> AppService --> HelloWorldEJB

I'm able to hit the HelloWorldEJB, but when I check the logged in user it's show as "J2EE_GUEST". This is because user authorization is not done in HelloWorldEJB. How I can login with a user in HelloWorldEJB using UME API?

AppService code to call the HelloWorldEJB:

@Path("/services") 
public class RestService {
    @GET
    @Path("/hello")
    public String sayHello() {
      String result = "";
      try {
        java.net.URL url =  new java.net.URL("http://host.com/HelloBeanService/HelloBean?wsdl");
        javax.xml.namespace.QName qName =  new javax.xml.namespace.QName("http://sap.com/tutorial/helloworld/", "HelloBeanService");
        HelloBeanService client = new HelloBeanService(url, qName);
        HelloBean helloService = client.getHelloBeanPort();
        result = helloService.sayHello();
      } catch (Exception e) {
         result = e.toString();
      }
      return result;
    }
}

HelloWorldEJB code to check logged in user:

@WebService(endpointInterface = "com.sap.tutorial.helloworld.HelloBeanRemote", portName = "HelloBeanPort", serviceName = "HelloBeanService", targetNamespace = "http://sap.com/tutorial/helloworld/")
@Stateless(name="HelloBean")
public class HelloBean implements HelloBeanRemote, HelloBeanLocal {
    public String sayHello() {
        IUser user = UMFactory.getAuthenticator().getLoggedInUser();
        return "Hello" + user.getDisplayName(); //retuned "J2EE_GUEST"
        //need to login user here.
    }
}

I got to know I should use

ILogonAuthentication logonAuthentication =UMFactory.getLogonAuthenticator();
logonAuthentication.logon(request, response,"default")

But I'm not using Servlet Client to access the service, so how I can set the value for request and response.

Thanks,

Amir Suhail

[former_member600934]

I found the solution.

First we need to set following @annotation for the WebService class

@AuthenticationDT(authenticationLevel = AuthenticationEnumsAuthenticationLevel.BASIC)

This can be imported from:

import com.sap.engine.services.webservices.espbase.configuration.ann.dt.AuthenticationDT; 
import com.sap.engine.services.webservices.espbase.configuration.ann.dt.AuthenticationEnumsAuthenticationLevel;

Then we need to set Web security for the Web Service. You can find the steps to do that here: https://help.sap.com/doc/saphelp_nw73ehp1/7.31.19/en-US/4b/5c8953d4be4cb9e10000000a42189b/frameset.h...

Then you can call the web service from any rest service by setting username and password like below:

try{
  java.net.URL url =new java.net.URL("http://host.com/HelloBeanService/HelloBean?wsdl");
  javax.xml.namespace.QName qName =new javax.xml.namespace.QName("http://sap.com/tutorial/helloworld/", "HelloBeanService");
  HelloBeanService client=new HelloBeanService(url, qName);
  HelloBean helloService =client.getHelloBeanPort();


  // Add username and password for Basic Authentication
  Map<String, Object> reqContext = ((BindingProvider) helloService).getRequestContext();
  reqContext.put(BindingProvider.USERNAME_PROPERTY, "YOUR_USERNAME");
  reqContext.put(BindingProvider.PASSWORD_PROPERTY, "YOUR_PASSWORD");

  result= helloService.sayHello();
}
catch(Exceptione){
  result=e.toString();
}

[AntalP]

Hi Amir,

You may check the SPML web service, it is intended to maintain users remotely.

Best regards,

Antal