||By Lahiru Sandakith
June 29, 2007
This tutorial is meant to demonstrate the use of the newly introduced Axis2 Web Services tools in the
Web Tools Platform Project using the WTP 2.0 drivers. Also this shows how to create a simple Web
service and Web service client from a JAVA class. The JAVA class in this scenario converts between the
Celsius and Farenheit temperature scales and its the same class that used in the Axis web services
||Before creating the Web service, there are two prerequisites:
- Download Eclipse WTP 2.0 and unzip
Configure Apache Tomcat inside Eclipse WTP.
|Creating a bottom up JAVA bean Web service and Web service client using Axis2 WTP
This tutorial need a Axis2 runtime. You can download the latest axis2 binary distribution from here.
Note : Currently Axis2 version 1.2 is the supported version for the Web Services Scenarios
- Download the latest Axis2 runtime from the above link and extract it.
- Now we point Eclipse WTP to downloaded Axis2 Runtime. Open Window -> Preferences
-> Web Services -> Axis2 Emitter
Select the Axis2 Runtime tab and point to the correct Axis2 runtime location. Alternatively at
the Axis2 Preference tab, you can set the default setting that will come up on the Web Services Creation
wizards. For the moment we will accept the default settings.
- Click OK.
- Next we need to create a project with the support of Axis2 features. Open File -> New
-> Other... -> Web -> Dynamic Web Project
- Select the name Axis2WSTest as the Dynamic Web project name (you can specify any name
you prefer), and select the configured Tomcat runtime as the target runtime.
- Select the Axis2 Web service facet
- This will create a dynamic Web project in the workbench
- Import the wtp/Converter.java class into Axis2WSTest/src (be
sure to preserve the package).
Build the Project, if its not auto build.
- Select Converter.java, open File -> New -> Other... -> Web Services -> Web Service
- The Web service wizard would be brought up with Web service type set to Bottom up Java
bean Web Service with the service implementation automatically filled in. Move the service scale to Start
- Click on the Web Service runtime link to select the Axis2 runtime.
- Ensure that the correct server and service project are selected as displayed below.
- This page is the service.xml selection page. if you have a custom services.xml, you can include
that by clicking the Browse button. For the moment, just leave it at the default.
- This page is the Start Server page. It will be displayed if the server has not been started.
Click on the Start Server button. This will start the server runtime.
- This page is the Web services publication page, accept the defaults.
- Now, select the Axis2WSTest dynamic Web project, right-click and select Run -> Run As
-> Run on Server to bring up the Axis2 servlet.
- Make sure you have the Axis2WSTest dynamic Web project on the right-hand side under the
- This will deploy the Axis2 server webapp on the configured servlet container and will display
the Axis2 home page. Note that the servlet container will start up according to the Server configuration
files on your workspace.
- Click on the Services link to view the available services. The newly created converter
Web service will be shown there.
- Click on the Converter Service link to display the ?wsdl URL of the newly created Web
service. Copy the URL.
- Now we'll generate the client for the newly created service by referring the ?wsdl generated by
the Axis2 Server. Open File -> New -> Other... -> Web Services -> Web ServiceClient
- Paste the URL that was copied earlier into the service definition field.
- Click on the Client project hyperlink and enter Axis2WSTestClient as the name of
the client project. Click OK.
- Back on the Web Services Client wizard, make sure the Web service runtime is set to Axis2 and
the server is set correctly. Click Next.
- Next page is the Client Configuration Page. Accept the defaults and click Finish.
- The Clients stubs will be generated to your Dynamic Web project Axis2WSTestClient.
- Now we are going to write Java main program to invoke the client stub. Import the ConverterClient.java file to the workspace into the wtp package
in the src folder of Axis2WSTestClient.
- Then select the ConverterClient file, right-click and select Run As -> Java Application.
Here's what you get on the server console:
- Another way to test and invoke the service is to select Generate test case to test the
service check box on the Axis2 Client Web Service Configuration Page when going through the Web Service
- If that option is selected, the Axis2 emitter will generate JUnit testcases matching the WSDL
we provide to the client. These JUnit testcases will be generated to a newly added source directory to
the Axis2WSTestClient project called test.
- Next thing we need to do is to insert the testcase with the valid inputs as the Web servivce
method arguments. In this case, let's test the ConverterConverterSOAP11Port_httpTest.java by provide
values for Celsius and Farenheit for the temperature conversion. As an example, replace the generated
TODO statement in each test method to fill in the data with values as:
testfarenheitToCelsius() -> farenheitToCelsius8.setFarenheit(212);
testStartfarenheitToCelsius() -> farenheitToCelsius8.setFarenheit(212);
testcelsiusToFarenheit() -> celsiusToFarenheit10.setCelsius(100);
testStartcelsiusToFarenheit() -> celsiusToFarenheit10.setCelsius(100);
Here the testcases were generated to test both the synchronous and asynchronous clients.
- After that, select the testcase, right-click, select Run As -> JUnit Test. You will be able
to run the unit test successfully invoking the Web service.
In this example, we show using the Web Services wizard followed by using the Web Service client
wizard. You could also choose to generate both service and client using the Web Services wizard:
The Web Service wizard orchestrates the end-to-end generation, assembly, deployment, installation and
execution of the Web service and Web service client. Now that your Web service is running, there are a few
interesting things you can do with this WSDL file. Examples:
- You can choose Web Services -> Test with Web Services Explorer to test the service.
- You can choose Web Services -> Publish WSDL file to publish the service to a public UDDI
You can also refer to the Axis Web services tutorials: