Welcome!

Java Authors: Carmen Gonzalez, Liz Dickinson, Pat Romanski, Bob Gourley, Yakov Fain

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.

@ThingsExpo Stories
SYS-CON Events announced today that SOA Software, an API management leader, will exhibit at SYS-CON's 15th International Cloud Expo®, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. SOA Software is a leading provider of API Management and SOA Governance products that equip business to deliver APIs and SOA together to drive their company to meet its business strategy quickly and effectively. SOA Software’s technology helps businesses to accelerate their digital channels with APIs, drive partner adoption, monetize their assets, and achieve a...
SYS-CON Events announced today that Aria Systems, the recurring revenue expert, has been named "Bronze Sponsor" of SYS-CON's 15th International Cloud Expo®, which will take place on November 4-6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Aria Systems helps leading businesses connect their customers with the products and services they love. Industry leaders like Pitney Bowes, Experian, AAA NCNU, VMware, HootSuite and many others choose Aria to power their recurring revenue business and deliver exceptional experiences to their customers.
SYS-CON Events announced today that AgilePoint, the leading provider of Microsoft-centric Business Process Management software, will exhibit at SYS-CON's 2nd International @ThingsExpo which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. AgilePoint is the leading provider of Microsoft-based Business Process Management (BPM) software products, has 1,300+ on-premise and cloud deployments in 25+ countries and provides the same advanced BPM feature set as J2EE vendors like IBM and Appian for the Microsoft .NET native environment. AgilePoint customer...
The Internet of Things (IoT) promises to evolve the way the world does business; however, understanding how to apply it to your company can be a mystery. Most people struggle with understanding the potential business uses or tend to get caught up in the technology, resulting in solutions that fail to meet even minimum business goals. In his session at Internet of @ThingsExpo, Jesse Shiah, CEO / President / Co-Founder of AgilePoint Inc., will show what is needed to leverage the IoT to transform your business. He will discuss opportunities and challenges ahead for the IoT from a market and tec...
SYS-CON Events announced today that Utimaco will exhibit at SYS-CON's 15th International Cloud Expo®, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Utimaco is a leading manufacturer of hardware based security solutions that provide the root of trust to keep cryptographic keys safe, secure critical digital infrastructures and protect high value data assets. Only Utimaco delivers a general-purpose hardware security module (HSM) as a customizable platform to easily integrate into existing software solutions, embed business logic and build s...
One of the biggest challenges when developing connected devices is identifying user value and delivering it through successful user experiences. In his session at Internet of @ThingsExpo, Mike Kuniavsky, Principal Scientist, Innovation Services at PARC, will describe an IoT-specific approach to user experience design that combines approaches from interaction design, industrial design and service design to create experiences that go beyond simple connected gadgets to create lasting, multi-device experiences grounded in people’s real needs and desires.
The Internet of Things will greatly expand the opportunities for data collection and new business models driven off of that data. In her session at Internet of @ThingsExpo, Esmeralda Swartz, CMO of MetraTech, will discuss how for this to be effective you not only need to have infrastructure and operational models capable of utilizing this new phenomenon, but increasingly service providers will need to convince a skeptical public to participate. Get ready to show them the money! Speaker Bio: Esmeralda Swartz, CMO of MetraTech, has spent 16 years as a marketing, product management, and busin...
SYS-CON Events announced today that TeleStax, the main sponsor of Mobicents, will exhibit at Internet of @ThingsExpo, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. TeleStax provides Open Source Communications software and services that facilitate the shift from legacy SS7 based IN networks to IP based LTE and IMS networks hosted on private (on-premise), hybrid or public clouds. TeleStax products include Restcomm, JSLEE, SMSC Gateway, USSD Gateway, SS7 Resource Adaptors, SIP Servlets, Rich Multimedia Services, Presence Services/RCS, Diame...
Samsung VP Jacopo Lenzi, who headed the company's recent SmartThings acquisition under the auspices of Samsung's Open Innovaction Center (OIC), answered a few questions we had about the deal. This interview was in conjunction with our interview with SmartThings CEO Alex Hawkinson. IoT Journal: SmartThings was developed in an open, standards-agnostic platform, and will now be part of Samsung's Open Innovation Center. Can you elaborate on your commitment to keep the platform open? Jacopo Lenzi: Samsung recognizes that true, accelerated innovation cannot be driven from one source, but requires a...
Things are being built upon cloud foundations to transform organizations. This CEO Power Panel at 15th Cloud Expo, moderated by Roger Strukhoff, Cloud Expo and @ThingsExpo conference chair, will address the big issues involving these technologies and, more important, the results they will achieve. How important are public, private, and hybrid cloud to the enterprise? How does one define Big Data? And how is the IoT tying all this together?
We certainly live in interesting technological times. And no more interesting than the current competing IoT standards for connectivity. Various standards bodies, approaches, and ecosystems are vying for mindshare and positioning for a competitive edge. It is clear that when the dust settles, we will have new protocols, evolved protocols, that will change the way we interact with devices and infrastructure. We will also have evolved web protocols, like HTTP/2, that will be changing the very core of our infrastructures. At the same time, we have old approaches made new again like micro-services...
SYS-CON Events announces a new pavilion on the Cloud Expo floor where WebRTC converges with the Internet of Things. Pavilion will showcase WebRTC and the Internet of Things. The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago. All major researchers estimate there will be tens of billions devices--computers, smartphones, tablets, and sensors – connected to the Internet by 2020. This number will continue to grow at a rapid pace for the next several decades.
The only place to be June 9-11 is Cloud Expo & @ThingsExpo 2015 East at the Javits Center in New York City. Join us there as delegates from all over the world come to listen to and engage with speakers & sponsors from the leading Cloud Computing, IoT & Big Data companies. Cloud Expo & @ThingsExpo are the leading events covering the booming market of Cloud Computing, IoT & Big Data for the enterprise. Speakers from all over the world will be hand-picked for their ability to explore the economic strategies that utility/cloud computing provides. Whether public, private, or in a hybrid form, clo...
SYS-CON Events announced today that Gridstore™, the leader in software-defined storage (SDS) purpose-built for Windows Servers and Hyper-V, will exhibit at SYS-CON's 15th International Cloud Expo®, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Gridstore™ is the leader in software-defined storage purpose built for virtualization that is designed to accelerate applications in virtualized environments. Using its patented Server-Side Virtual Controller™ Technology (SVCT) to eliminate the I/O blender effect and accelerate applications Gridsto...
SYS-CON Events announced today that Red Hat, the world's leading provider of open source solutions, will exhibit at Internet of @ThingsExpo, which will take place on November 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA. Red Hat is the world's leading provider of open source software solutions, using a community-powered approach to reliable and high-performing cloud, Linux, middleware, storage and virtualization technologies. Red Hat also offers award-winning support, training, and consulting services. As the connective hub in a global network of enterprises, partners, a...
As the Internet of Things unfolds, mobile and wearable devices are blurring the line between physical and digital, integrating ever more closely with our interests, our routines, our daily lives. Contextual computing and smart, sensor-equipped spaces bring the potential to walk through a world that recognizes us and responds accordingly. We become continuous transmitters and receivers of data. In his session at Internet of @ThingsExpo, Andrew Bolwell, Director of Innovation for HP’s Printing and Personal Systems Group, will discuss how key attributes of mobile technology – touch input, senso...
The Internet of Things (IoT) is making everything it touches smarter – smart devices, smart cars and smart cities. And lucky us, we’re just beginning to reap the benefits as we work toward a networked society. However, this technology-driven innovation is impacting more than just individuals. The IoT has an environmental impact as well, which brings us to the theme of this month’s #IoTuesday Twitter chat. The ability to remove inefficiencies through connected objects is driving change throughout every sector, including waste management. BigBelly Solar, located just outside of Boston, is trans...
Connected devices and the Internet of Things are getting significant momentum in 2014. In his session at Internet of @ThingsExpo, Jim Hunter, Chief Scientist & Technology Evangelist at Greenwave Systems, will examine three key elements that together will drive mass adoption of the IoT before the end of 2015. The first element is the recent advent of robust open source protocols (like AllJoyn and WebRTC) that facilitate M2M communication. The second is broad availability of flexible, cost-effective storage designed to handle the massive surge in back-end data in a world where timely analytics...
Internet of @ThingsExpo Silicon Valley announced on Thursday its first 12 all-star speakers and sessions for its upcoming event, which will take place November 4-6, 2014, at the Santa Clara Convention Center in California. @ThingsExpo, the first and largest IoT event in the world, debuted at the Javits Center in New York City in June 10-12, 2014 with over 6,000 delegates attending the conference. Among the first 12 announced world class speakers, IBM will present two highly popular IoT sessions, which will take place November 4-6, 2014 at the Santa Clara Convention Center in Santa Clara, Calif...
From a software development perspective IoT is about programming "things," about connecting them with each other or integrating them with existing applications. In his session at @ThingsExpo, Yakov Fain, co-founder of Farata Systems and SuranceBay, will show you how small IoT-enabled devices from multiple manufacturers can be integrated into the workflow of an enterprise application. This is a practical demo of building a framework and components in HTML/Java/Mobile technologies to serve as a platform that can integrate new devices as they become available on the market.