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| <title>Top Down Web Service Supporting Flexible Projects</title> |
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| <body> |
| <h1>Top Down Web Service Supporting Flexible Projects</h1> |
| <p> |
| <b>By Kathy Chan</b> |
| <br /> |
| August 11, 2005 |
| <br /> |
| <br /> |
| </p> |
| |
| <h2>Introduction</h2> |
| <br></br> |
| <p> |
| This document is one of a series of tutorials to |
| demonstrate the use of the Web Services tools in the Web |
| Tools Platform Project using the <b>WTP 0.7 drivers</b>. |
| </p> |
| <p> |
| This tutorial shows how to create a simple top-down Web |
| service from a WSDL file. The WSDL file in this scenario |
| calculates the area of an rectangle. |
| |
| </p> |
| <br></br> |
| |
| |
| <h2>Set Up</h2> |
| <br></br> |
| <p> |
| Before creating the Web service, there are three |
| prerequisites: |
| <ol> |
| <li> |
| <a href="../InstallTomcat/InstallTomcat.html"> |
| Install Apache Tomcat |
| </a> |
| </li> |
| <li> |
| Set the <b>J2EE Project Module Preference</b> to |
| allow multiple modules per project. Open |
| <b>Window -> Preferences... -> J2EE Project Modules Preference |
| </b> and check the <b>Allow Multiple modules per project</b> option. |
| </li> |
| <li>Create a Web project</li> |
| <ol> |
| <li> |
| Open |
| <b> |
| File -> New -> Other... -> Web -> Dynamic Web |
| Project |
| </b> |
| to create a new flexible project and Web module. |
| </li> |
| <li>Click <b>Next</b>.</li> |
| <li>Add a new project by clicking <b>New...</b> beside the project name field.</li> |
| <li> |
| Enter |
| <tt>AreaProject</tt> |
| into the |
| <b>Name</b> |
| field. |
| </li> |
| |
| <li> |
| Ensure that the |
| <b>Target server</b> |
| is set to |
| <b>Apache Tomcat v5.0</b> |
| . If you have not previously configured |
| a server runtime use the <b>New...</b> |
| button beside the <b>Target server</b> field to |
| do so. Result: |
| </li> |
| |
| <br></br> |
| <img border="0" |
| SRC="images/AreaProject.JPG" /> |
| <br></br> |
| |
| <li>Click <b>Finish</b> to go back to the <b>Dynamic Web Project</b> wizard.</li> |
| <li> |
| Enter |
| <tt>area</tt> |
| into the |
| <b>Module Name</b> |
| field. Result: |
| </li> |
| <br></br> |
| <img border="0" |
| SRC="images/area.JPG" /> |
| <br></br> |
| <li> |
| Click |
| <b>Finish</b>. |
| </li> |
| <li> |
| Say <b>Yes</b> to open the J2EE perspective and you will |
| see the <tt>AreaProject</tt> you created listed |
| under <b>Dynamic Web Projects</b> in the <b>Project Explorer</b> |
| view. Expand the <tt>AreaProject</tt> project to |
| see its contents. |
| </li> |
| </ol> |
| |
| </ol> |
| </p> |
| |
| |
| <h2>Create a top down Java bean Web service</h2> |
| |
| <ol> |
| <li> |
| Import the file |
| <a href="srcfiles/AreaService.wsdl">AreaService.wsdl</a> |
| into AreaProject/area/WebContent. |
| </li> |
| |
| <li>Select the <b>AreaService.wsdl</b> file.</li> |
| |
| <li> |
| Open File -> New -> Other... -> Web Services -> Web |
| Service. |
| </li> |
| <li>Click <b>Next</b></li> |
| <li> |
| In the Web service type combo, select |
| <b>Top down Java bean Web Service</b> |
| . |
| </li> |
| |
| <li> |
| Select |
| <b>Overwrite files without warning</b> |
| . Result: |
| </li> |
| |
| <br/> |
| <img border="0" |
| SRC="images/td1.JPG" /> |
| <br/> |
| |
| <li> |
| Click |
| <b>Next</b> |
| . Result: |
| </li> |
| |
| <br></br> |
| <img border="0" |
| src="images/td2.JPG" /> |
| <br></br> |
| |
| <li> |
| Click |
| <b>Next</b> |
| to get to the |
| <b>Service Deployment Configuration Page</b> |
| . Result: |
| </li> |
| |
| <br></br> |
| <img border="0" |
| src="images/td3.JPG" /> |
| <br></br> |
| |
| <li> |
| If you want to choose a server different |
| from the one defaulted by the wizard, click the |
| <b>Edit</b> |
| button to: |
| <a href="../SelectServer/SelectServer.html"> |
| select a server |
| </a> |
| </li> |
| <li> |
| Click |
| <b>Finish</b>. |
| </li> |
| <li> |
| It will take about one minute for the wizard to assemble |
| the Web service projects, start Apache Tomcat and deploy |
| the projects to Tomcat. Once finished, the Java |
| implementation file |
| <b>AreaServiceSOAPImpl.java</b> |
| will appear in the browser view. Fill in the expression |
| <b>parameters.getHeight()*parameters.getWidth()</b> |
| as the return value for the <tt>calculateRectArea</tt> method and save the file. |
| </li> |
| |
| <br /> |
| <img border="0" |
| SRC="images/td4.JPG" /> |
| </ol> |
| <p> |
| Follow the instructions at |
| <a href="../WebServiceClient/WebServiceClient.html"> |
| Creating Web Service Client |
| </a> |
| to create a Web service client that you can then use to test this Web service. |
| </p> |
| |
| </body> |
| </html> |
