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[m2e-users] Need help with m2eclipse 0.13 + war:exploded
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[moved from users@maven]
I'm using m2eclipse 0.13 from the /N/ update site, trying to achieve
one of the "holy grails" of integration: Google App Engine + Scala [+
Lift, optionally] + Eclipse with m2e. Solving this problem would be a
win for a whole lot of developers out there (and it might also make
more "vanilla" WAR packaging easier to describe, too).
Environment: Eclipse 3.6.2, Google Plugin for Eclipse 2.3.0beta1,
Scala IDE Plugin "wip-backport" nightly with 2.8.1 runtime, m2e 0.13
nightly as noted above.
I have all the necessary dependencies in the POM, including a
dependency on a sibling project, and compiling is just fine. To get
this to package up, I know I need a war:exploded layout (since GAE's
deployment will do its own archiving of <project>/war).
However, I don't know what to do to get the dependencies (the JAR
dependencies from the project's POM and the plain classes from the
sibling project) into war/. I note that the copy-dependencies goal is
explicitly disallowed with an error in m2e 0.13, so I'm not sure what
is now responsible for getting the dependencies into the WAR. Further,
I don't know how to tell Eclipse to make Maven actually do that at
some point before I deploy (since the Maven Builder is no longer
configurable at all in 0.13).
POM follows. Whether this is a plain Scala or Lift project, or even a
regular Java project, doesn't really matter; what's critical is
getting the dependencies into war/ for deployment.
<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>org.duh</groupId>
<artifactId>duh-lifttest</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<goals>
<goal>exploded</goal>
</goals>
</plugin>
</plugins>
<outputDirectory>war/WEB-INF/classes</outputDirectory>
</build>
<dependencies>
<dependency>
<groupId>net.liftweb</groupId>
<artifactId>lift-mapper_2.8.1</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.duh</groupId>
<artifactId>duh-util</artifactId>
<version>0.0.2-SNAPSHOT</version>
</dependency>
</dependencies>
</project>