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Date: Wed, 5 Feb 2014 11:40:00 -0800 (PST)
From: TenLeftFingers <jarlathreidy@gmail.com>
To: users@maven.apache.org
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Subject: Re: Build is successful but can't run?
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Hi Mark,

Thanks for that. I changed the pom as you suggested. When I ran with java
-jar myApp.jar I got the output:
*Failed to load Main-Class manifest attribute from target/myApp.jar*

I opened the manifest and the *Main-Class* attribute was entered as
*mainClass.* So I changed it to the former and that got rid of that error.
But now  I *still *get the original error.

The only pom change I'm not sure about is
*<classpathPrefix>lib/</classpathPrefix>*. What classes is that classpath
trying to capture?

Thanks,
Ten


On Wed, Feb 5, 2014 at 7:01 PM, Mark Eggers [via Maven] <
ml-node+s40175n5783298h15@n5.nabble.com> wrote:

> On 2/5/2014 9:52 AM, TenLeftFingers wrote:
>
> > When I build my Maven project with dependencies (using Netbeans but
> pointing
> > to a vanilla Maven installation), I get BUILD SUCCESS. Great!
> >
> > When I try to /run /it in the form of *java -cp
> > target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App* I get this:
> > *java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory*
> >
> > How come this dependency fails at this late stage?
> >
> > Trying to run the class from NetBeans itself gives a different error:
> > *Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:exec*
> >
> > Please enlighten me as to how I can run this thing. It works fine in
> Eclipse
> > when I run it as a Java Application - but Eclipse has other problems
> that
> > I'm avoiding so I need to do this either from CLI or NetBeans
> (preferable).
> >
> > Thanks,
> > Ten
>
> I normally use NetBeans . . . .
>
> One way to handle this (and it'll end up looking like a standard
> NetBeans project) is the following.
>
> 1. Modify the manifest via the maven-jar-plugin
>
> <plugin>
>    <groupId>org.apache.maven.plugins</groupId>
>    <artifactId>maven-jar-plugin</artifactId>
>    <version>2.4</version>
>    <configuration>
>      <archive>
>        <manifest
> <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
>          <mainClass>main-class-name</mainClass>
>          <addClasspath>true</addClasspath>
>          <classpathPrefix>lib/</classpathPrefix>
>        </manifest>
>      </archive>
>    </configuration>
> </plugin>
>
> 2. Use the maven-dependency-plugin to copy over the libraries
>
> <plugin>
>    <groupId>org.apache.maven.plugins</groupId>
>    <artifactId>maven-dependency-plugin</artifactId>
>    <version>2.8</version>
>    <executions>
>      <execution>
>        <phase>package</phase>
>        <goals>
>          <goal>copy-dependencies</goal>
>        </goals>
>        <configuration>
> <outputDirectory>${project.build.directory}/lib</outputDirectory>
>          <includeScope>compile</includeScope>
>        </configuration>
>      </execution>
>    </executions>
> </plugin>
>
> 3. Run from the command line to test
>
> mvn package
> cd target
> java -jar jarFileName.jar
>
> To ship the binaries, use the maven-assembly-plugin and package both the
> JAR and the supporting libraries. That way when someone unpacks the zip
> (or tar or tar.gz, etc.), the directory structure will be maintained.
>
> Here's an assembly.xml file. I've left out the xml namespace declarations:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <assembly>
>      <id>bin</id>
>      <formats>
>          <format>tar.gz</format>
>          <format>zip</format>
>      </formats>
>      <includeBaseDirectory>false</includeBaseDirectory>
>      <includeSiteDirectory>false</includeSiteDirectory>
>      <fileSets>
>          <fileSet>
>              <directory>target</directory>
>              <outputDirectory></outputDirectory>
>              <includes>
>                  <include>*.jar</include>
>                  <include>lib/</include>
>              </includes>
>          </fileSet>
>      </fileSets>
> </assembly>
>
> Other ways include creating an uber-jar.
>
> . . . . just my two cents.
> /mde/
>
>
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