Creating a Java bean skeleton from a WSDL document using the WebSphere run-time environment

Prerequisites:

• Create a dynamic Web project as described in Creating a WebSphere Server and Web project. It is strongly suggested that you start the server before running the Web service wizard since it may take several minutes to start the WebSphere Application Server depending on the speed of your computer. To start the server, select it in the Servers view (Window > Show View > Servers), right-click and click Start.

• Create or discover and import a WSDL document into the Web project. You can only use a WSDL file that contains a service element.

The Web Service wizard assists you in creating a skeleton bean from an existing WSDL document. The skeleton bean contains a set of methods that correspond to the operations described in the WSDL document. When the bean is created, each method has a trivial implementation that you replace by editing the bean.

To create a skeleton Java bean from a WSDL document:

1. Switch to the J2EE perspective ( Window > Open Perspective > J2EE).

2. In the Project Explorer view, select the Web project in which you want to create the skeleton bean Web service, and select the WSDL file you have created or imported.

3. Click File > New > Other. Select Web Services in order to display the various Web service wizards. Select the Web Service wizard. Click Next.

4. Web Services page: select Skeleton Java bean Web service as your Web service type. You can optionally choose to do the following:
   • Start the Web service in a Web project - if you do not select this option you will have to manually start the Web service. You must select this option to enable the other options on this page.

   • Launch the Web Services Explorer to publish your Web service to a UDDI registry.

   • Generate a Java bean client proxy to the Web service. The Java bean client proxy that is generated provides a remote procedure call interface to the Web service.

   • Test the Web service - this allows you to test the Web service in the Web Service Explorer before a proxy is generated.

   • Send the Web service traffic through the TCP/IP Monitor, which allows you to watch the SOAP traffic generated by the Web service and to test this traffic for WS-I compliance.

5. Object Selection page: Enter the URI to the WSDL, WSIL, or HTML file that will be used to generate the Java bean. You can optionally generate a WSIL file from this file as well. Ensure that there are no spaces at the beginning of the URI or you may generate a null pointer exception.

6. Service Deployment Configuration page: specify the server and client deployment settings.
   1. Click Edit and select the IBM WebSphere run-time environment and select the server on which you want to run your Web service and Web service client. If you want to use the IBM SOAP run-time environment or the Apache Axis 1.0 run-time environment, refer to the appropriate task.

   2. Select the Web project and EAR in which you want your Web service created. The wizard will create these for you if they do not already exist.

   3. Select the type and name of project in which you want the Web service client created. If you enter the name of an existing project, the project type field must match that of the existing project. If you enter a name of a project that does not already exist, the wizard will create the project for you. Note that the only project type supported for Axis and SOAP run-time clients is a Web project. If you want the client to be created in a Java, EJB, or Application Client project, select the WebSphere run-time environment for your client.

   4. Select an existing EAR or enter a unique name to associate the Web service client with a different EAR than the Web service EAR. Note: Selecting different EARs for the Web service and Web service client can reduce the chance of encountering run time errors, but will use more system resources.

7. Service Endpoint Interface Selection page: You can select to use an existing service endpoint intferface (SEI) rather than letting the wizard generate one.

8. Web Services Skeleton Java Bean Configuration page: Select the folder where the generated Java bean will be stored. Optionally, you can select if you want security enabled for this Web service; security is not WS-I compliant. If you want to review or edit the mappings between packages and namespaces, select the Define custom mapping for namespace to package check box.

9. Web Service Namespace to Package Mappings page: if you selected Define custom mapping for namespace to package on the previous panel, you can enter your custom mapping pairs on this panel by clicking Add. Alternately, you can click Import to import custom mapping pairs from a .properties file. The content of the properties file must be of the format namespace=package .

10. Web Service Proxy page: If you have selected to generate a proxy, this page shows the options for the proxy. It lists the folder where the proxy will be generated, and you can optionally enable security for the proxy, and create custom mappings between namespaces and packages.

11. Web Service client namespace to package mapping page: if you selected Define custom mapping for namespace to package on the previous panel, you can enter your custom mapping pairs on this panel by clicking Add. Alternately, you can click Import to import custom mapping pairs from a .properties file. The content of the properties file must be of the format namespace=package .

12. Web Service Publication page: If you have selected to publish your Web service to a UDDI registry, use this page to launch the Web Services Explorer and select the UDDI registry to which the Web service will be published. Click Finish.

After the Web service has been created, the following may occur depending on the options you selected:

• If you have selected to test the generated proxy using Web service JSPs, the proxy is launched in a Web browser at the following URL: http://localhost: port/ WebProjectClient/sampleBeanName/WebServiceName/TestClient.jsp You can use this sample application to test the Web service by selecting a method, entering a value for the method, and clicking Invoke. The result of the method will display in the results pane. Since this is a Java bean skeleton with trivial method implementation, a value of -3 will be returned.

• If you have selected to test the generated proxy using the Universal Test Client, it will be launched in a browser window at the following URL: http://localhost:9080/UTC/preload?object= BeanPackage. BeanServiceProxy. In the Reference pane, under Object References, expand the proxy stub to display the methods of the Web service. Click the method you want to test, enter a value in the Parameters pane, and click Invoke. The result will be generated below.

• If you have selected to test the Web service using the Web Services Explorer, the Explorer will open. Select the operation you want to test, enter the required information, and click Go. The result will display in the Status pane.

• If you have selected to publish the Web service, the Web Services Explorer is launched displaying the page required to publish your Web service to the IBM UDDI Test Registry. Follow the instructions in Publishing the Web service to complete this task.

 

Related Concepts

Tools for Web services development
Web services development
Web services run-time environments

Related Tasks
Developing Web services
Using the Web Services Explorer

Related Reference
WSDL documents