Welcome!

PHP Authors: Liz McMillan, Carmen Gonzalez, Hovhannes Avoyan, Lori MacVittie, Trevor Parsons

Blog Feed Post

How I Created a Standard pom.xml file for Eclipse and NetBeans

After building my environment for JavaServer Faces in the Eclipse IDE it was time to move onto NetBeans. It should be simple, I thought. I was very, very wrong.

NetBeans Step 1

Create a new project for Maven->Web Application. Fill in the usual details about the Maven project. When complete and the project appears immediately edit the pom.xml file and replace the section that starts with <dependencies> until the end with the contents from my pom.xml file from my previous blog posts.

At this point the project is ready for you to write your code. Or so I thought . . .

NetBeans revealed a flaw in my pom.xml file. In Eclipse the classpath of a Maven project includes the server’s library. This makes the TomEE lib folder’s jar files available to Eclipse. This is not the case with NetBeans. When it handles a Maven based project it expects all references to libraries to be declared in the pom.xml only. The ability to add libraries to a project through the IDE is removed.

When I began working on this project  I was looking for a Maven dependency that referred to the TomEE libraries and not the Java EE 6 Oracle libraries. So the following dependency refers to the wrong version of the libraries.

<dependency>
   <groupId>javax</groupId>
   <artifactId>javaee-web-api</artifactId>
   <version>6.0</version>
   <scope>provided</scope>
</dependency>

Here is where I made one of many mistakes. I believed that the Maven TomEE plugin provided the correct libraries. So I placed in my pom.xml file:

<dependency>
   <groupId>org.apache.openejb.maven</groupId>
   <artifactId>tomee-maven-plugin</artifactId>
   <version>1.6.0</version>
   <scope>provided</scope>
</dependency>

This plugin has nothing to do with TomEE libraries. Instead its purpose is to allow a Maven pom.xml to be written that could, as listed on the TomEE maven Plugin page, do the following:

  • easy provisioning of a TomEE server
  • server start and stop
  • application deploy and undeploy

I did not notice the problem in Eclipse because it saw the TomEE libraries but when I tried to write a Facelet template file with NetBeans it reported that there was No Faces library in the classpath. So back to Google I went.

I found a blog entitled Developing Java EE 6 Applications With TomEE and NetBeans. It created a project by using an archetype. It showed how to add an archetype to Netbeans. It used the tomee-webapp-archetype.

The issue that I have with archetypes is that I must tell my students to delete or ignore parts of the project they create. When I used Maven in the classroom with Eclipse last term I used the maven-archetype-quickstart. Most of my students were confused by the generated files and chose to leave them in place unchanged. Most of my students’ projects displayed “Hello World!” in the console when run because they would not change the App.java file. Now I plan to start projects without an archetype.

What I was really interested in was the pom.xml file it created. It contained the dependency I was looking for that referenced the library used by TomEE:

<dependency>
   <groupId>org.apache.openejb</groupId>
   <artifactId>javaee-api</artifactId>
   <version>6.0-5</version>
   <scope>provided</scope>
</dependency>

It also included a plugin for the JPA. Great, now for some testing.

The sample code ran in NetBeans although it complained about the following tag in an xhtml file:

<h:body bgcolor="white">

Now I was getting ticked off. The sample web app does work and the error is ignored. I know it works because I changed the color to green. What I don’t understand is how the authors of this archetype felt it was acceptable to leave an error in their code. A little research revealed that it should have been written as:

<h:body style="background-color:white">

I now think I’m all set. As a further test I decide to try to add a new JSF Facelets template file. I could not create the file because NetBeans declared that there was No Facelets Libraries Found. But I thought org.apache.openejb.javaee-api would take care of this. A look into the Dependencies folder of the project revealed that there were no JSF libraries. So back to Google and the following was added:

<dependency>
   <groupId>org.apache.myfaces.core</groupId>
   <artifactId>myfaces-impl-ee6</artifactId>
   <version>2.1.1</version>
   <scope>provided</scope>
</dependency>

How can we be told that JSF should be used in place of Servlets and JSPs only to discover that org.apache.openejb.javaee-api does not include MyFaces? I found my fix and so it’s time to move on.

The archetype sample code now ran flawlessly and I could add new Facelet template files.

I had successfully followed the Eclipse JSF Tools Tutorial – JSF 2.0 using may Maven based project setup. You can find this tutorial in the Eclipse help system. I uploaded it to my SVN repository and then brought it down to NetBeans. It ran successfully in NetBeans. Now I replaced most of the pom.xml file with the new components from the archetype sample and it continued to run flawlessly. I was on a roll. So I updated the repository from NetBeans and brought the project back into Eclipse. Eclipse was not happy.

Eclipse complained about a section of the JPA plugin in the pom.xml file.

<executions>
   <execution>
      <id>enhancer</id>
      <phase>process-classes</phase>
      <goals>
         <goal>enhance</goal>
      </goals>
   </execution>
</executions>

I could comment these lines out but NetBeans was okay with them. The error message in Eclipse stated that “Plugin execution not covered by lifecycle configuration”. Back to Google and a solution was found. It seems Eclipse’s m2e plugin needs information about the lifecycle and this needed to be added to the pom.xml. You can read about this here.

So more elements were added to the pom.xml. I did discover that while you normally place plugins as a child of the <plugins> tag, the fix for Eclipse required the plugins to be children of <pluginManagement><plugins>.

Once Eclipse was happy I moved the project back through SVN to NetBeans and it did not mind the Eclipse specific elements in the pom.xml. The Eclipse tutorial project worked on both platforms and I could create the project from scratch on both platforms.

The last niggling problem was a warning whenever I ran the Eclipse tutorial. TomEE wrote out to the console:

WARNING: Attribute ‘for’ of label component with id j_id_a is not defined

I popped this into Google and came up with this answer.

The author of the Eclipse tutorial wrote:

<h:outputLabel value="Welcome #{loginBean.name}"></h:outputLabel>

This was the cause of the problem and the Stack Overflow author of the answer made some pretty strong remarks about whomever writes this in tutorials. I concurred. The fix is:

<h:outputText value="Welcome #{loginBean.name}"></h:outputText>

The tutorial also failed to use CDI correctly but that was a simple fix.

Here is the final version of the pom.xml file. Final, that is, until I discover some other component of the Java EE 6 Web profile that is missing from the org.apache.openejb.javaee-api.

<project xmlns="http://maven.apache.org/POM/4.0.0" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
    http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.kenfogel</groupId>
   <artifactId>JSFExample01</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <packaging>war</packaging>
   <name>JSF Example</name>
   <description>JSF 2.0 Tools Tutorial from Eclipse</description>
   <dependencies>
      <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
         <version>4.11</version>
         <scope>test</scope>
      </dependency>
      <!-- Apache OpenEJB -->
      <dependency>
         <groupId>org.apache.openejb</groupId>
         <artifactId>javaee-api</artifactId>
         <version>6.0-5</version>
         <scope>provided</scope>
      </dependency>
      <!-- Apache MyFaces library that is included with TomEE 
           but not considered  part of the javaee-api -->
      <dependency>
         <groupId>org.apache.myfaces.core</groupId>
         <artifactId>myfaces-impl-ee6</artifactId>
         <version>2.1.1</version>
         <scope>provided</scope>
      </dependency>
   </dependencies>
   <build>
      <pluginManagement>
         <plugins>
            <!--This plugin's configuration is used to store 
                Eclipse m2e settings only. It has no influence 
                on the Maven build itself. Appears harmless in 
                NetBeans -->
            <plugin>
               <groupId>org.eclipse.m2e</groupId>
               <artifactId>lifecycle-mapping</artifactId>
               <version>1.0.0</version>
               <configuration>
                  <lifecycleMappingMetadata>
                     <pluginExecutions>
                        <pluginExecution>
                           <pluginExecutionFilter>
                              <groupId>some-group-id</groupId>
                              <artifactId>some-artifact-id
                              </artifactId>
                              <versionRange>[1.0.0,)</versionRange>
                              <goals>
                                 <goal>some-goal</goal>
                              </goals>
                           </pluginExecutionFilter>
                           <action>
                              <execute>
                                 <runOnIncremental>false
                                 </runOnIncremental>
                              </execute>
                           </action>
                        </pluginExecution>
                     </pluginExecutions>
                  </lifecycleMappingMetadata>
               </configuration>
            </plugin>
            <!-- Java Persistence API settings -->
            <plugin>
               <groupId>org.apache.openjpa</groupId>
               <artifactId>openjpa-maven-plugin</artifactId>
               <version>2.3.0</version>
               <configuration>
                  <includes>**/entities/*.class</includes>
                  <excludes>**/entities/XML*.class</excludes>
                  <addDefaultConstructor>true
                  </addDefaultConstructor>
                  <enforcePropertyRestrictions>true
                  </enforcePropertyRestrictions>
               </configuration>
               <!-- Maven settings not supported by Eclipse 
                    without the plugin above. NetBeans is fine with
                    with or without the plugin above -->
               <executions>
                  <execution>
                     <id>enhancer</id>
                     <phase>process-classes</phase>
                     <goals>
                        <goal>enhance</goal>
                     </goals>
                  </execution>
               </executions>
               <dependencies>
                  <dependency>
                     <groupId>org.apache.openjpa</groupId>
                     <artifactId>openjpa</artifactId>
                     <!-- set the version to be the same as the 
                          level in your runtime -->
                     <version>2.3.0</version>
                  </dependency>
               </dependencies>
            </plugin>
            <!-- used to compile the sources of your project -->
            <plugin>
               <groupId>org.apache.maven.plugins</groupId>
               <artifactId>maven-compiler-plugin</artifactId>
               <version>3.1</version>
               <!-- Java version -->
               <configuration>
                  <source>1.7</source>
                  <target>1.7</target>
               </configuration>
            </plugin>
            <!-- used during the test phase of the build 
                 lifecycle to execute the unit tests of 
                 an application -->
            <plugin>
               <groupId>org.apache.maven.plugins</groupId>
               <artifactId>maven-surefire-plugin</artifactId>
               <version>2.16</version>
            </plugin>
            <!-- responsible for collecting all artifact 
                 dependencies, classes and resources of the web 
                 application and packaging them into a 
                 war file -->
            <plugin>
               <groupId>org.apache.maven.plugins</groupId>
               <artifactId>maven-war-plugin</artifactId>
               <version>2.4</version>
               <configuration>
                  <failOnMissingWebXml>false</failOnMissingWebXml>
                  <webXml>src/main/webapp/WEB-INF/web.xml</webXml>
               </configuration>
            </plugin>
         </plugins>
      </pluginManagement>
   </build>
   <!-- Repository to use if required files are not in the local 
        repository -->
   <repositories>
     <repository>
       <id>apache-snapshot</id>
       <name>Apache Snapshot Repository</name>
       <url>https://repository.apache.org/content/groups/snapshots/
       </url>
     </repository>
   </repositories>
   <properties>
      <project.build.sourceEncoding>UTF-8
      </project.build.sourceEncoding>
   </properties>
</project>

Please let me know if you see any errors. The fix for the Eclipse lifecycle error has meaningless information in it because I could not find any meaningful values. What I saw all appeared quite arbitrary.

I think that I can now begin planning the curriculum for my courses.

Read the original blog entry...

More Stories By Ken Fogel

In 1980 I bought for myself the most wonderful toy of the day, the Apple ][+. Obsession followed quickly and by 1983 I was writing software for small and medium sized businesses in Montreal for both the Apple and the IBM PC under the company name Omnibus Systems. In the evenings I taught continuing education courses that demystified the computer to the first generation of workers who found themselves with their typewriter on the scrap heap and a PC with WordStar taking its place.

In 1990 I was invited to join the faculty at Dawson College in the Computer Science Technology program. When I joined the program the primary language was COBOL and my responsibility was to teach small systems languages such as BASIC and C/C++.

Today I am now the chairperson and program coordinator of the Computer Science Technology program at Dawson. The program's primary language is Java and the focus is on enterprise programming.

I like to write about the every day problems my students and I face in using various languages and platforms to get the job done. And from time to time I stray from the path and write about what I plan to do, what I actually get around to doing, and what I imagine I am doing.

@omniprof

@ThingsExpo Stories
As data explodes in quantity, importance and from new sources, the need for managing and protecting data residing across physical, virtual, and cloud environments grow with it. Managing data includes protecting it, indexing and classifying it for true, long-term management, compliance and E-Discovery. Commvault can ensure this with a single pane of glass solution – whether in a private cloud, a Service Provider delivered public cloud or a hybrid cloud environment – across the heterogeneous enter...
DXWorldEXPO LLC announced today that ICC-USA, a computer systems integrator and server manufacturing company focused on developing products and product appliances, will exhibit at the 22nd International CloudEXPO | DXWorldEXPO. DXWordEXPO New York 2018, colocated with CloudEXPO New York 2018 will be held November 11-13, 2018, in New York City. ICC is a computer systems integrator and server manufacturing company focused on developing products and product appliances to meet a wide range of ...
More and more brands have jumped on the IoT bandwagon. We have an excess of wearables – activity trackers, smartwatches, smart glasses and sneakers, and more that track seemingly endless datapoints. However, most consumers have no idea what “IoT” means. Creating more wearables that track data shouldn't be the aim of brands; delivering meaningful, tangible relevance to their users should be. We're in a period in which the IoT pendulum is still swinging. Initially, it swung toward "smart for smart...
Major trends and emerging technologies – from virtual reality and IoT, to Big Data and algorithms – are helping organizations innovate in the digital era. However, to create real business value, IT must think beyond the ‘what’ of digital transformation to the ‘how’ to harness emerging trends, innovation and disruption. Architecture is the key that underpins and ties all these efforts together. In the digital age, it’s important to invest in architecture, extend the enterprise footprint to the cl...
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...
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, discussed how from store operations and ...
In an era of historic innovation fueled by unprecedented access to data and technology, the low cost and risk of entering new markets has leveled the playing field for business. Today, any ambitious innovator can easily introduce a new application or product that can reinvent business models and transform the client experience. In their Day 2 Keynote at 19th Cloud Expo, Mercer Rowe, IBM Vice President of Strategic Alliances, and Raejeanne Skillern, Intel Vice President of Data Center Group and ...
Dion Hinchcliffe is an internationally recognized digital expert, bestselling book author, frequent keynote speaker, analyst, futurist, and transformation expert based in Washington, DC. He is currently Chief Strategy Officer at the industry-leading digital strategy and online community solutions firm, 7Summits.
We are seeing a major migration of enterprises applications to the cloud. As cloud and business use of real time applications accelerate, legacy networks are no longer able to architecturally support cloud adoption and deliver the performance and security required by highly distributed enterprises. These outdated solutions have become more costly and complicated to implement, install, manage, and maintain.SD-WAN offers unlimited capabilities for accessing the benefits of the cloud and Internet. ...
Founded in 2000, Chetu Inc. is a global provider of customized software development solutions and IT staff augmentation services for software technology providers. By providing clients with unparalleled niche technology expertise and industry experience, Chetu has become the premiere long-term, back-end software development partner for start-ups, SMBs, and Fortune 500 companies. Chetu is headquartered in Plantation, Florida, with thirteen offices throughout the U.S. and abroad.
Bill Schmarzo, author of "Big Data: Understanding How Data Powers Big Business" and "Big Data MBA: Driving Business Strategies with Data Science," is responsible for setting the strategy and defining the Big Data service offerings and capabilities for EMC Global Services Big Data Practice. As the CTO for the Big Data Practice, he is responsible for working with organizations to help them identify where and how to start their big data journeys. He's written several white papers, is an avid blogge...
Bill Schmarzo, author of "Big Data: Understanding How Data Powers Big Business" and "Big Data MBA: Driving Business Strategies with Data Science," is responsible for setting the strategy and defining the Big Data service offerings and capabilities for EMC Global Services Big Data Practice. As the CTO for the Big Data Practice, he is responsible for working with organizations to help them identify where and how to start their big data journeys. He's written several white papers, is an avid blogge...
From 2013, NTT Communications has been providing cPaaS service, SkyWay. Its customer’s expectations for leveraging WebRTC technology are not only typical real-time communication use cases such as Web conference, remote education, but also IoT use cases such as remote camera monitoring, smart-glass, and robotic. Because of this, NTT Communications has numerous IoT business use-cases that its customers are developing on top of PaaS. WebRTC will lead IoT businesses to be more innovative and address...
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...
Gemini is Yahoo’s native and search advertising platform. To ensure the quality of a complex distributed system that spans multiple products and components and across various desktop websites and mobile app and web experiences – both Yahoo owned and operated and third-party syndication (supply), with complex interaction with more than a billion users and numerous advertisers globally (demand) – it becomes imperative to automate a set of end-to-end tests 24x7 to detect bugs and regression. In th...
Michael Maximilien, better known as max or Dr. Max, is a computer scientist with IBM. At IBM Research Triangle Park, he was a principal engineer for the worldwide industry point-of-sale standard: JavaPOS. At IBM Research, some highlights include pioneering research on semantic Web services, mashups, and cloud computing, and platform-as-a-service. He joined the IBM Cloud Labs in 2014 and works closely with Pivotal Inc., to help make the Cloud Found the best PaaS.
Cloud-enabled transformation has evolved from cost saving measure to business innovation strategy -- one that combines the cloud with cognitive capabilities to drive market disruption. Learn how you can achieve the insight and agility you need to gain a competitive advantage. Industry-acclaimed CTO and cloud expert, Shankar Kalyana presents. Only the most exceptional IBMers are appointed with the rare distinction of IBM Fellow, the highest technical honor in the company. Shankar has also receive...
"Evatronix provides design services to companies that need to integrate the IoT technology in their products but they don't necessarily have the expertise, knowledge and design team to do so," explained Adam Morawiec, VP of Business Development at Evatronix, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Business professionals no longer wonder if they'll migrate to the cloud; it's now a matter of when. The cloud environment has proved to be a major force in transitioning to an agile business model that enables quick decisions and fast implementation that solidify customer relationships. And when the cloud is combined with the power of cognitive computing, it drives innovation and transformation that achieves astounding competitive advantage.
The Founder of NostaLab and a member of the Google Health Advisory Board, John is a unique combination of strategic thinker, marketer and entrepreneur. His career was built on the "science of advertising" combining strategy, creativity and marketing for industry-leading results. Combined with his ability to communicate complicated scientific concepts in a way that consumers and scientists alike can appreciate, John is a sought-after speaker for conferences on the forefront of healthcare science,...