How to invoke web services on WSDL URL in Java?

Question

I need to invoke some web service methods within a java web application that I\'m building.

E.g each time a user signs up, I want to call the newUser me

Answer 1

Run wsimport on the deployed WSDL URL , you can run it from your JDK:

wsimport -p client -keep http://localhost:8080/calculator?wsdl

This step will generates and compile some classes. Notice -keep switch, you need it to keep the generated Java source files.

Calculator.java - Service Endpoint Interface or SEI
CalculatorService - Generated Service, instantiate it

public class MyClientServiceImpl {
    public static void main(String args[]){

    @Override
    public Integer add(int a , int b) {
       CalculatorService service = new CalculatorService();
       Calculator calculatorProxy = service.getCalculatorPort();            
        /**
         * Invoke the remote method
         */
        int result = calculatorProxy.add(10, 20);
        System.out.println("Sum of 10+20 = "+result);
    }
}

If you are using the Java EE 6 supported container then you can use it in this way ,

public class MyClientServiceImpl implements MyClientService {

    @WebServiceRef(wsdlLocation = "http://localhost:8080/calculator?wsdl", 
value = CalculatorService.class)
    private Calculator service;

    @Override
    public Integer add(int a , int b) {
        return service.add(a,b);
    }
}