Invoking a web service. Need the missing link

Can someone fill in the missing link in the code below?

First way:

The web service interface file is HappyService.

JaxWSProxyFactoryBean factory = new JaxWsProxyFactoryBean();

factory.getInterceptors().add(new LoggingInInterceptor());
factory.getInterceptors().add(new LoggingOutInterceptor());

//MISSING LINK. Where does HappyService.class come from? I don't have it
factory.setServiceClass(HappyService.class);

factory.setAddress("http://......../happyService");

//Again how do I get HappyService?
HappyService client = (HappyService) factory.create();

Second way:

String UrlString = "Your WSDL URL";   
   String nameSpaceUri = "urn:Foo";
   String serviceName = "MyHelloService";
   String portName = "HelloIFPort";

   URL helloWsdlUrl = new URL(UrlString);

   ServiceFactory serviceFactory = ServiceFactory.newInstance()开发者_开发百科;

   Service helloService =
            serviceFactory.createService(helloWsdlUrl, 
            new QName(nameSpaceUri, serviceName));

   //Where did dynamicproxy.HelloIF come from? This code won't compile as that file does not exist anywhere
   dynamicproxy.HelloIF myProxy = 
            (dynamicproxy.HelloIF) 
            helloService.getPort(
            new QName(nameSpaceUri, portName), 
            dynamicproxy.HelloIF.class); 

        System.out.println(myProxy.sayHello("Buzz"));

Anyone that has a clue as to where these interface classes come from and how they are generated please let me know. It looks like the only way I can do an web service invocation is by writing the SOAP request by hand and I really don't want to do that as it can get very large and error prone.

There are many tools that generate webservices Java classes from WSDL definition files.

You could try JAXB, which is the standard Java tool for this task. An other possibility is Axis, which a level higher.

You need a SOAP library such as Apache Axis2. The library will include tools for generating Java classes from WSDLs. You would use that generated code to make the web service calls.

Based on your first sample I think you use the CXF framework.

This framework provides a task named wsdl2java that allows to generate classes from a WSDL file.

Once your classes are generated you can use them in your code to call the Web Service in an easy way without having to build the SOAP message by hand. It's CXF's job to do this.

I think it helps if you refer few basics of web-services in java

http://www.oracle.com/technetwork/java/index-jsp-137004.html

http://metro.java.net/