WTP - m2e not deploying transitive dependencies

问题:

I have a web application which is structured in this way:

A.jar -> B.war -> C.war

I'm using Eclipse Juno and the WTP version is 1.1. The A.jar is a workspace utility project which is being included by B.war. B.war is a war project that is included by C.war as an overlay. That's the way I'm doing that:

<dependency>
    <groupId>com.projects</groupId>
    <artifactId>B</artifactId>
    <version>1.0-SNAPSHOT</version>
    <type>war</type>
    <scope>runtime</scope>
</dependency>

After that, I deploy the C project to the Tomcat server. That works like a charm if I manually deploy the Maven generated war to the Tomcat, because A.jar is included in WEB-INF/lib. However my problem comes when I let m2e-wtp do the deploy, because it's doing the overlay properly but not including the A transitive dependency. I tried including it as a pom, as I read somewhere around here, but I have the same result.

<dependency>
    <groupId>com.projects</groupId>
    <artifactId>B</artifactId>
    <version>1.0-SNAPSHOT</version>
    <type>war</type>
    <scope>runtime</scope>
</dependency>

<dependency>
    <groupId>com.projects</groupId>
    <artifactId>B</artifactId>
    <version>1.0-SNAPSHOT</version>
    <type>pom</type>
</dependency>

I'm using the newest versions of m2e (1.2) and m2e-wtp (0.16) and have my projects updated with the Maven configuration.

Is it an m2e-wtp issue or simply do I have to organize my project in other way?

---

EDITED

I noticed m2e-wtp configuration is stored into Eclipse's project./settings/org.eclipse.wst.common.component file. That's how it looks for my war:

<dependent-module deploy-path="/"
    handle="module:/overlay/prj/B?includes=**/**&amp;excludes=META-INF/MANIFEST.MF">
    <dependency-type>consumes</dependency-type>
</dependent-module>
<dependent-module deploy-path="/"
    handle="module:/overlay/slf/?includes=**/**&amp;excludes=META-INF/MANIFEST.MF">
    <dependency-type>consumes</dependency-type>
</dependent-module>

As I can see the war dependency is set for consume while the jar dependencies are set for use.

Released m2e-wtp version 0.17 doesn't seem to fix it.

---

EDITED (2013-08-30)

Today I was back to the same problem. Even I have Eclipse kepler installed with the latest stable release of WTP out of the box, this problem seems to persist. I thought it was solved, but I apparently mischeck it...

回答1:

I think it is not a problem of your project organization. Your issue is very similar to this m2e-wtp bug report.

回答2:

It seems to be a Eclipse Juno and WTP Plugin problem.

I had the same problem and i solved in this way:

1. Backup your eclipse workspace and your project code
2. remove your project from eclipse (without remove the contents)
3. open a command terminal (cmd)
4. run mvn eclipse:clean
5. run mvn eclipse:eclipse -Dwtpversion=2.0
6. edit your eclipse classpath file with a text editor: %PROJECT_PATH%\.classpath
7. remove all lines with attribute kind="var" from your .classpath file. For example:

   < classpathentry kind="var" path="M2_REPO/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar" sourcepath="M2_REPO/javax/servlet/servlet-api/2.5/servlet-api-2.5-sources.jar"/>

8. save file & close editor.
9. in eclipse, click on: file->Import...->Maven->import existing maven project, and import your project again
10. Maven -> Update Project (if you want)

You could see on deployment assembly in eclipse project properties that problem is solved and the maven dependencies are there.

Hope this helps.

回答3:

I also have this problem. I have an ugly workaround:

Put all the original war's dependencies in a separate project (type jar) and make both original war and overlay war depend on that. So for the example:

A.jar -> B.war -> C.war

becomes

A.jar -> B-dependencies.jar (new module called B-dependencies created)

B-dependencies.jar -> B.war

B-dependencies.jar -> C.war

Note that it's not specific to Tomcat; I'm using JBoss.