Several days ago, on the advice of someone on another list, I configured
the use of the "maven-dependency-plugin" in my POM so that the build
would copy some dependencies into a local folder, not inside the target
folder.
This worked the very first time I ran the build with it, and I've been
using the results for a while.
Today I started to look at this again, to ensure that these copied
artifacts would be properly cleaned up from "mvn clean". I first tried
reconfiguring where it wrote the jars, changing it from "libs" to
"target/libs". For some reason, when I ran the build, it didn't create
"target/libs", nor did it copy the jars. At that point, I thought there
was some issue with writing them into a subfolder of "target".
I then changed it back to "libs", but I implemented additional
"maven-clean-plugin" configuration to make it delete that folder. When I
ran "mvn clean", it did what I expected, removing that folder, along
with "target".
However, when I then tried to build the whole thing again, I found that
it wasn't creating the "libs" folder, and it wasn't copying the jars
there. I then tried manually creating "libs", but that didn't help. I
tried adding "--debug", which didn't tell me anything useful. I imagine
the same thing that is making it not copy the jars into "libs" is the
same thing that prevented it writing them into "target/libs", so there
likely wasn't a real issue with using a subfolder of "target", but
something else is just preventing it from copying the jars.
This is what I have in the POM for this plugin (eliding the details of
each artifact):
-----------------
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.10</version>
<executions>
<execution>
<id>copy</id>
<phase>package</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
...
</artifactItem>
<artifactItem>
...
</artifactItem>
<artifactItem>
...
</artifactItem>
<artifactItem>
...
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
-------------------
What might be wrong here?
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