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POEssential tags for building the java project using maven in pom.xml
 

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  1. POEssential tags for building the java project using maven in pom.xml
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    <p>I am building my java project using maven but couldn't succeed. So, can anyone please tell me the essential tags and their corresponding values required in pom.xml to build a project? Also, how do i add the storm dependencies manually from command line? </p> <p>My directory structure of project :</p> <pre><code>ROOT | |----com---&gt;test-----&gt;newpackage----&gt;*.class |--- META-INF------&gt;MANIFEST.MF |----resource-----&gt;words.txt |----pom.xml |-----*.jar </code></pre> <p>Initially i tried <a href="https://stackoverflow.com/questions/10568275/noclassdeffounderror-on-maven-dependency">Maven Link</a> and create the <code>pom.xml</code> like this :</p> <pre><code>&lt;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"&gt; &lt;build&gt; &lt;plugins&gt; &lt;plugin&gt; &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; &lt;artifactId&gt;maven-shade-plugin&lt;/artifactId&gt; &lt;version&gt;1.6&lt;/version&gt; &lt;executions&gt; &lt;execution&gt; &lt;phase&gt;com.test.newpackage&lt;/phase&gt; &lt;goals&gt; &lt;goal&gt;shade&lt;/goal&gt; &lt;/goals&gt; &lt;/execution&gt; &lt;/executions&gt; &lt;/plugin&gt; &lt;/plugins&gt; &lt;/build&gt; &lt;/project&gt; </code></pre> <p>But, after that i use <code>mvn package</code>. It throw this exception :</p> <pre><code>[INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [ERROR] FATAL ERROR [INFO] ------------------------------------------------------------------------ [INFO] Error building POM (may not be this project's POM). Project ID: unknown POM Location: /home/naresh/Desktop/SharedFolder/StormEclipse/pom.xml Reason: Not a v4.0.0 POM. for project unknown at /home/naresh/Desktop/SharedFolder/StormEclipse/pom.xml [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.reactor.MavenExecutionException: Not a v4.0.0 POM. for project unknown at /home/naresh/Desktop/SharedFolder/StormEclipse/pom.xml at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:404) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:272) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138) at org.apache.maven.cli.MavenCli.main(MavenCli.java:362) at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315) at org.codehaus.classworlds.Launcher.launch(Launcher.java:255) at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430) at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.project.InvalidProjectModelException: Not a v4.0.0 POM. for project unknown at /home/naresh/Desktop/SharedFolder/StormEclipse/pom.xml at org.apache.maven.project.DefaultMavenProjectBuilder.readModel(DefaultMavenProjectBuilder.java:1599) at org.apache.maven.project.DefaultMavenProjectBuilder.readModel(DefaultMavenProjectBuilder.java:1571) at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromSourceFileInternal(DefaultMavenProjectBuilder.java:506) at org.apache.maven.project.DefaultMavenProjectBuilder.build(DefaultMavenProjectBuilder.java:200) at org.apache.maven.DefaultMaven.getProject(DefaultMaven.java:604) at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:487) at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:391) ... 12 more [INFO] ------------------------------------------------------------------------ [INFO] Total time: &lt; 1 second [INFO] Finished at: Mon Jul 22 14:38:24 IST 2013 [INFO] Final Memory: 1M/15M [INFO] ------------------------------------------------------------------------ </code></pre> <p>After that i used this link <a href="https://github.com/nathanmarz/storm/wiki/Running-topologies-on-a-production-cluster" rel="nofollow noreferrer">Maven link 2</a> and created the pom.xml like this :</p> <pre><code> &lt;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"&gt; &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt; &lt;groupId&gt;com.test.newpackage&lt;/groupId&gt; &lt;artifactId&gt;wordcount&lt;/artifactId&gt; &lt;version&gt;0.0.1&lt;/version&gt; &lt;build&gt; &lt;plugins&gt; &lt;plugin&gt; &lt;artifactId&gt;maven-assembly-plugin&lt;/artifactId&gt; &lt;configuration&gt; &lt;descriptorRefs&gt; &lt;descriptorRef&gt;jar-with-dependencies&lt;/descriptorRef&gt; &lt;/descriptorRefs&gt; &lt;archive&gt; &lt;manifest&gt; &lt;mainClass&gt;com.test.newpackage&lt;/mainClass&gt; &lt;/manifest&gt; &lt;/archive&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;/plugins&gt; &lt;/build&gt; &lt;repositories&gt; &lt;!-- Repository where we can found the storm dependencies &lt;repository&gt; &lt;id&gt;clojars.org&lt;/id&gt; &lt;url&gt;http://clojars.org/repo&lt;/url&gt; &lt;/repository&gt; --&gt; &lt;/repositories&gt; &lt;dependencies&gt; &lt;!-- Storm Dependency --&gt; &lt;dependency&gt; &lt;groupId&gt;storm&lt;/groupId&gt; &lt;artifactId&gt;storm&lt;/artifactId&gt; &lt;version&gt;0.8.1&lt;/version&gt; &lt;/dependency&gt; &lt;/dependencies&gt; &lt;/project&gt; </code></pre> <p>This time it throw this exception :</p> <pre><code>[ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Failed to resolve artifact. Missing: ---------- 1) storm:storm:jar:0.8.1 Try downloading the file manually from the project website. Then, install it using the command: mvn install:install-file -DgroupId=storm -DartifactId=storm -Dversion=0.8.1 -Dpackaging=jar -Dfile=/path/to/file Alternatively, if you host your own repository you can deploy the file there: mvn deploy:deploy-file -DgroupId=storm -DartifactId=storm -Dversion=0.8.1 -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id] Path to dependency: 1) com.test.newpackage:wordcount:jar:0.0.1 2) storm:storm:jar:0.8.1 ---------- 1 required artifact is missing. for artifact: com.test.newpackage:wordcount:jar:0.0.1 from the specified remote repositories: central (http://repo1.maven.org/maven2) </code></pre>
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