[dtoubelis]

I have a MyEclipse Web Project with Maven enabled. The project relies on 4 other projects as dependencies. When compiling classes in MyEclipse gui everything works fine, Maven4MyEclipse properly resolves conflicts and “Maven Dependencies” library shows all the correct versions of jar files. However, when I deploy the project to Tomcat I see all conflicting versions of jar files in WEB-INF/lib and web application obviously fails to start. Here is an example:

antlr-2.7.6.jar
aopalliance-1.0.jar
asm-1.5.3.jar
asm-attrs-1.5.3.jar
avalon-framework-4.1.3.jar
cglib-2.1_3.jar
commons-beanutils-1.8.0.jar
commons-codec-1.3.jar
commons-collections-2.1.1.jar
commons-collections-3.2.jar
commons-logging-1.1.1.jar
commons-logging-1.1.jar
dom4j-1.6.1.jar
ehcache-1.2.3.jar
ejb3-persistence-1.0.2.GA.jar
hibernate-3.2.6.ga.jar
hibernate-annotations-3.4.0.GA.jar
hibernate-commons-annotations-3.1.0.GA.jar
hibernate-core-3.3.0.SP1.jar
hibernate-ehcache-3.3.1.GA.jar
jstl-1.1.2.jar
jta-1.0.1B.jar
log4j-1.2.14.jar
logkit-1.0.1.jar
slf4j-api-1.5.6.jar
slf4j-log4j12-1.5.6.jar
spring-aop-2.5.6.jar
spring-beans-2.0.8.jar
spring-beans-2.5.6.jar
spring-context-2.0.8.jar
spring-context-2.5.6.jar
spring-context-support-2.5.6.jar
spring-core-2.0.8.jar
spring-core-2.5.6.jar
spring-dao-2.0.8.jar
spring-hibernate3-2.0.8.jar
spring-jdbc-2.0.8.jar
spring-security-core-2.0.4.jar
spring-security-core-tiger-2.0.4.jar
spring-support-2.0.8.jar
spring-web-2.5.6.jar
spring-webmvc-2.5.6.jar
standard-1.1.2.jar

Any ideas why?

[Loyal Water]

dtoubelis,
Im not sure what is the cause of this issue. I’ll ask the dev team to investigate this issue.

[allenparslow]

The “Maven Dependencies” library not having the duplicates mean that your pom is ok (i.e. you don’t have two of the same jars with slightly different groupid for example).

Check your lib folder in src/main/webapp/WEB-INF/lib or if you used the wizard instead of the maven standard then project/WebRoot/WEB-INF/lib: both of them should be empty.

Also, try clean from the project menu (followed undeploying your webapp, and redeploying it).

I recommend the following in web project poms (not MyEclipse specific) (when you run the mvn clean command from the command line or maven clean command from the project right-click (run as) menu it cleans the output directory):

<build>
        <plugins>
            <plugin>
                <artifactId>maven-clean-plugin</artifactId>
                <configuration>
                    <filesets>
                        <fileset>
                            <directory>
                                src/main/webapp/WEB-INF/
                            </directory>
                            <includes>
                                <include>lib/</include>
                                <include>classes</include>
                            </includes>
                        </fileset>
                    </filesets>
                </configuration>
            </plugin>
        </plugins>
    </build>

NOTE: the directory specified must be changed if using project/WebRoot/WEB-INF/lib.

[allenparslow]

Note: after running the above specified mvn clean, you will need to do build from the project menu.

[Loyal Water]

dtoubelis,
Can you pm me an example project that will help me reproduce this issue at my end. You can hit the pm button below my post and send me the project.

[dtoubelis]

Thanks for the help Nipun. Apparently it was an issues with maven itself. Maven4MyEclipse plugin was resolving dependensies fine but maven beneath had a problem. I traced this issue using maven directly, fixed couple of depencencies and it is all okay now. Thanks again. BTW your plugin configuration is quite usefull.

[Loyal Water]

Your welcome.

[Author]

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