Welcome!

Weblogic Authors: Yeshim Deniz, Elizabeth White, Michael Meiner, Michael Bushong, Avi Rosenthal

Related Topics: Java IoT, Weblogic, Eclipse

Java IoT: Article

Configuring the WebLogic-Eclipse Plug-in

Designed to run the WebLogic Server from the Eclipse IDE

The WebLogic-Eclipse plug-in is designed to run the WebLogic Server from the Eclipse IDE. With the WebLogic-Eclipse plug-in, the WebLogic Server gets started and stopped from Eclipse. An application deployed in the WebLogic Server can be debugged from Eclipse with the plug-in. By installing the WebLogic plug-in in Eclipse the WebLogic Server can be configured and administered from the Eclipse IDE by setting the server classpath and JVM options in Eclipse.

Overview
A J2EE developer is commonly required to administer the WebLogic Server and debug applications deployed in the WebLogic Server. While the WebLogic Server administration console can start and stop the WebLogic Server, the administration console doesn't provide for setting the JVM options and the server classpath. The JVM options and server classpath have to be set in the startWebLogic script. And to debug an application deployed in the WebLogic Server, an IDE with a remote debugger is needed. With the WebLogic plug-in the WebLogic Server can be administered from the Eclipse IDE. In this tutorial we'll develop a J2EE application consisting of a Session EJB and a servlet, deploy the application in the WebLogic Server from the Eclipse IDE, and debug the application in Eclipse.

Preliminary Setup

Installing the WebLogic-Eclipse Plug-in
Now we'll install the WebLogic-Eclipse IDE. In the Eclipse IDE select Help>Software Updates>Find and Install. The Install/Update frame gets displayed. Select Search for new features to install and click on the Next button. The Install frame gets displayed. Click on the New Remote Site button to specify an update Web site from which to install a plug-in. In the New Update Site frame specify a name and the URL from which the WebLogic-Eclipse plug-in is installed. The URL for the WebLogic-Eclipse plug-in is https://eclipse-plug-in.projects.dev2dev.bea.com/update. An update site configuration gets added. Select the checkbox for EclipseWebLogic for "Sites to include in search" and click on the Next button. In the features to install frame select the WebLogic-Eclipse Feature and click on the Next button.

Select the license terms and click on the Next button. In the Install location frame the directory in which the WebLogic-Eclipse plug-in will be installed is specified. Click the Finish button to complete the configuration of the WebLogic plug-in. The JAR Verification frame is displayed. Click the Install button to install the WebLogic-Eclipse plug-in. Restart the Eclipse workbench for the plug-in to get installed. The WebLogic-Eclipse plug-in gets installed in the Eclipse IDE. The Run>Start WebLogic and Run>Stop WebLogic features get added to Eclipse.

Configuring the WebLogic-Eclipse Plug-in
After installing the WebLogic-Eclipse plug-in we'll configure the plug-in in the Eclipse IDE. First, create a project with which the WebLogic plug-in is to be configured. Select File>New>Project. In the New Project frame select Java>Java Project and click the Next button. In the Create a Java project frame specify a project name and click the Next button. In the Java Settings frame add a source folder for the project. Click the Add Folder button. In the New Source Folder frame specify a folder name. A message frame prompts to set the bin folder as the build output folder. Next, add the libraries required for the project. The example application requires the J2EE JAR in the classpath. Select the Libraries tab and click on the Add External JARs button.

Add the J2EE 1.4 j2ee.jar file to the project. The j2ee.jar gets listed in the project Libraries. Click the Finish button to complete the configuration of the project. A project gets added to the Eclipse IDE Package Explorer view.

Next, we'll specify a WebLogic Server configuration. Select Window>Preferences. The Preferences frame gets displayed. Select the WebLogic node. In the WebLogic preference page select the version of the WebLogic Server to be configured. Specify the different field values, which are listed in Table 1. The values may vary depending on the directory in which the server is installed and in which the domain is configured. Click on the Apply button to apply the specified values.

If any JAR files have to be added to the server classpath, select the WebLogic>Classpath node. JAR/Zip files or directories can be added before the WebLogic libraries or after the WebLogic libraries. Select the WebLogic>JavaVM Options node to specify JavaVM options. For example, modify the weblogic.ProductionModeEnabled property. Set the property value to false to start the server in development mode. Click on the Apply button to apply the JavaVM options.

Next, specify the projects to be debugged with the WebLogic Server configuration. Click on the Add button. Select the projects to be added to the plug-in configuration. To debug a project, the project has to be in the plug-in configuration. Click the OK button.

The selected projects get added to projects list. Click on the Apply button and then the OK button. The WebLogic plug-in gets configured with a project and the WebLogic Server.

Developing and Debugging a WebLogic Application
After configuring the WebLogic plug-in, develop a J2EE application to deploy and debug in the WebLogic Server. The example J2EE application consists of a Session EJB and a client servlet. The J2EE application is available in the resources zip file (source code for this article can be found by viewing the article online in the WLDJ archives, http://wldj.sys-con.com/read/issue/archives/, Vol. 5, iss. 2). Extract the resources zip file to a directory. In the Eclipse project EclipseWebLogic, which was configured in the previous section, import the src directory of the J2EE application with File>Import. In the Import frame select the File System node and click the Next button. In the File system frame select the directories/files to add to the project and click the Finish button. (See Figure 1)

The example J2EE application files get added to the project. Build the project with the Ant build.xml file. Right-click on the build.xml file and select Run>Ant Build. The J2EE application gets built and deployed in the WebLogic Server applications directory. Next, start the WebLogic Server in the Eclipse IDE with Run>Start WebLogic. The Session EJB/Servlet application gets deployed in the WebLogic Server as listed in the applications node.

Run the WebLogicServlet in the browser with the URL http://localhost:7001/weblogic/webLogicPlug-in. The output from the servlet is displayed in the browser. Next add an exception (a NullPointerException) to the client servlet to demonstrate the debugging feature of the WebLogic plug-in. In the WebLogicServlet servlet replace

out.println(sessionEJB.getEclipsePlug-in());

with

String str=null;
out.println(str.toString());

Add a breakpoint to the servlet with Run>Add Java Exception Breakpoint. In the Add Java Exception Breakpoint frame select the NullPointerException. Delete the previous build directory and build the application with the build.xml. Select the Debug perspective. In the Debug perspective the WebLogic Server is shown to be running at localhost host.

Run the example servlet (with the NullPointerException) in the browser. Because the servlet has an exception the server gets suspended and the Debug perspective displays the NullPointerException. The application can be debugged with the debug features in the Run menu item.

Conclusion
Thus the WebLogic Server gets administered from the EclipseIDE with the WebLogic plug-in and applications deployed in the server are debugged from the Eclipse IDE. A limitation of the WebLogic plug-in is that debugging JSPs isn't supported. The 2.0 version of the plug-in will have additional features.

More Stories By Deepak Vohra

Deepak Vohra is a Sun Certified Java 1.4 Programmer and a Web developer.

More Stories By Ajay Vohra

Ajay Vohra is a senior solutions architect with DataSynapse Inc.

Comments (4) View Comments

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


Most Recent Comments
Filipe Silva 09/21/06 12:41:45 PM EDT

The correct plugin URL is https://eclipse-plugin.projects.dev2dev.bea.com/update/

(no hyphen between "plug" and "in")

However, I can't find the source code (or resource files) referred in the text.

Eclipse News Desk 07/28/06 11:06:57 AM EDT

The WebLogic-Eclipse plug-in is designed to run the WebLogic Server from the Eclipse IDE. With the WebLogic-Eclipse plug-in, the WebLogic Server gets started and stopped from Eclipse. An application deployed in the WebLogic Server can be debugged from Eclipse with the plug-in. By installing the WebLogic plug-in in Eclipse the WebLogic Server can be configured and administered from the Eclipse IDE by setting the server classpath and JVM options in Eclipse.

Eclipse News Desk 07/28/06 10:10:33 AM EDT

The WebLogic-Eclipse plug-in is designed to run the WebLogic Server from the Eclipse IDE. With the WebLogic-Eclipse plug-in, the WebLogic Server gets started and stopped from Eclipse. An application deployed in the WebLogic Server can be debugged from Eclipse with the plug-in. By installing the WebLogic plug-in in Eclipse the WebLogic Server can be configured and administered from the Eclipse IDE by setting the server classpath and JVM options in Eclipse.

Krishma Singla 07/28/06 01:25:27 AM EDT

The plug-in update URL for Eclipse as mentioned in the article is not a valid one.
Is it compatible only with Eclipse 3.0?
I am trying it with Eclipse 3.2 but the URL seems to be invalid.

IoT & Smart Cities Stories
DXWorldEXPO LLC announced today that ICOHOLDER named "Media Sponsor" of Miami Blockchain Event by FinTechEXPO. ICOHOLDER gives detailed information and help the community to invest in the trusty projects. Miami Blockchain Event by FinTechEXPO has opened its Call for Papers. The two-day event will present 20 top Blockchain experts. All speaking inquiries which covers the following information can be submitted by email to [email protected] Miami Blockchain Event by FinTechEXPOalso offers sp...
DXWordEXPO New York 2018, colocated with CloudEXPO New York 2018 will be held November 11-13, 2018, in New York City and will bring together Cloud Computing, FinTech and Blockchain, Digital Transformation, Big Data, Internet of Things, DevOps, AI, Machine Learning and WebRTC to one location.
@DevOpsSummit at Cloud Expo, taking place November 12-13 in New York City, NY, is co-located with 22nd international CloudEXPO | first international DXWorldEXPO and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time t...
Headquartered in Plainsboro, NJ, Synametrics Technologies has provided IT professionals and computer systems developers since 1997. Based on the success of their initial product offerings (WinSQL and DeltaCopy), the company continues to create and hone innovative products that help its customers get more from their computer applications, databases and infrastructure. To date, over one million users around the world have chosen Synametrics solutions to help power their accelerated business or per...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things'). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing. IoT is not about the devices, its about the data consumed and generated. The devices are tools, mechanisms, conduits. This paper discusses the considerations when dealing with the...
Charles Araujo is an industry analyst, internationally recognized authority on the Digital Enterprise and author of The Quantum Age of IT: Why Everything You Know About IT is About to Change. As Principal Analyst with Intellyx, he writes, speaks and advises organizations on how to navigate through this time of disruption. He is also the founder of The Institute for Digital Transformation and a sought after keynote speaker. He has been a regular contributor to both InformationWeek and CIO Insight...
Machine learning has taken residence at our cities' cores and now we can finally have "smart cities." Cities are a collection of buildings made to provide the structure and safety necessary for people to function, create and survive. Buildings are a pool of ever-changing performance data from large automated systems such as heating and cooling to the people that live and work within them. Through machine learning, buildings can optimize performance, reduce costs, and improve occupant comfort by ...
Digital Transformation is much more than a buzzword. The radical shift to digital mechanisms for almost every process is evident across all industries and verticals. This is often especially true in financial services, where the legacy environment is many times unable to keep up with the rapidly shifting demands of the consumer. The constant pressure to provide complete, omnichannel delivery of customer-facing solutions to meet both regulatory and customer demands is putting enormous pressure on...
Bill Schmarzo, Tech Chair of "Big Data | Analytics" of upcoming CloudEXPO | DXWorldEXPO New York (November 12-13, 2018, New York City) today announced the outline and schedule of the track. "The track has been designed in experience/degree order," said Schmarzo. "So, that folks who attend the entire track can leave the conference with some of the skills necessary to get their work done when they get back to their offices. It actually ties back to some work that I'm doing at the University of San...
CloudEXPO New York 2018, colocated with DXWorldEXPO New York 2018 will be held November 11-13, 2018, in New York City and will bring together Cloud Computing, FinTech and Blockchain, Digital Transformation, Big Data, Internet of Things, DevOps, AI, Machine Learning and WebRTC to one location.