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POMaven local dependency not resolving sub-dependencies
 

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  1. POMaven local dependency not resolving sub-dependencies
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    <p>I'm having problems resolving sub-dependencies from a third-party package. I'm a bit of a Maven beginner. Basically it goes like this:</p> <pre><code>git clone git://github.com/unidata/thredds.git cd thredds mvn install </code></pre> <p>Everything works great and stuff is installed into <code>~/.m2</code>. Now, I wrote my own code that uses the package that I just installed:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &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;test&lt;/groupId&gt; &lt;artifactId&gt;test&lt;/artifactId&gt; &lt;packaging&gt;jar&lt;/packaging&gt; &lt;version&gt;0.1&lt;/version&gt; &lt;name&gt;Test Package&lt;/name&gt; &lt;dependencies&gt; &lt;dependency&gt; &lt;groupId&gt;edu.ucar&lt;/groupId&gt; &lt;artifactId&gt;netcdf&lt;/artifactId&gt; &lt;version&gt;4.3.8-SNAPSHOT&lt;/version&gt; &lt;/dependency&gt; &lt;/dependencies&gt; &lt;/project&gt; </code></pre> <p>Ok, this also works great when I run <code>mvn package</code>. The <code>netcdf</code> artifact is found. Now, when I try to run my code, I start down a long <code>ClassNotFoundException</code> path, having to keep adding all of <code>netcdf</code>'s dependencies to my classpath.</p> <p>Am I doing something wrong, or should the <code>thredds</code> package and all its dependencies automatically be picked up?</p> <p><strong>edit:</strong> the thredds package has many sub-modules one of which is netcdf. My code only depends on the netcdf jar.</p> <p><strong>edit:</strong> the snapshot version is installed</p> <pre><code>$ ls -l ~/.m2/repository/edu/ucar/netcdf/4.3.8-SNAPSHOT/ total 4272 -rw-rw-r-- 1 nwatkins nwatkins 700 2012-03-29 23:23 maven-metadata-local.xml -rw-rw-r-- 1 nwatkins nwatkins 182 2012-03-29 23:23 _maven.repositories -rw-rw-r-- 1 nwatkins nwatkins 4357494 2012-03-29 23:23 netcdf-4.3.8-SNAPSHOT.jar -rw-rw-r-- 1 nwatkins nwatkins 7840 2012-03-29 22:28 netcdf-4.3.8-SNAPSHOT.pom </code></pre> <p><strong>edit:</strong> to run the code which is in a single file <code>Test.java</code></p> <pre><code>$ java -cp target/test-0.1.jar Test </code></pre> <p><strong>edit:</strong> first error message</p> <p>$ java -cp target/test-0.1.jar Test</p> <pre><code>Exception in thread "main" java.lang.NoClassDefFoundError: ucar/ma2/InvalidRangeException Caused by: java.lang.ClassNotFoundException: ucar.ma2.InvalidRangeException at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) </code></pre> <p><strong>edit:</strong> then I just try to manually add the dependency jar to the class path</p> <pre><code>$ java -cp ../thredds/cdm/target/netcdf-4.3.8-SNAPSHOT.jar:target/test-0.1.jar Test xception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory at ucar.nc2.NetcdfFile.&lt;clinit&gt;(NetcdfFile.java:97) at Test.main(Test.java:37) Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:266) ... 2 more </code></pre> <p>The <code>slf4j</code> package is also in <code>~/.m2</code>. I stopped trying to add things to the classpath after this as it seemed like the wrong approach. at java.lang.ClassLoader.loadClass(ClassLoader.java:266)</p>
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    1. COWhere is a reference to thredds as dependency ? I only see netcdf as a dependency ?
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    2. COAhh, sorry. The thredds package has many sub-modules that are built and installed, one of which is netcdf. My program only depends on the netcdf package.
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    3. COIf the netcdf package really a SNAPSHOT if yes do you have the correct version ? Furthermore how do you run your code ?
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