问题
Having this dependencies section in my pom.xml:
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-frontend-jaxws</artifactId>
<version>2.7.1</version>
<type>jar</type>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http</artifactId>
<version>2.7.1</version>
<type>jar</type>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>3.0.7.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.26</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.2.6.Final</version>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-api</artifactId>
<version>2.7.1</version>
<exclusions>
<exclusion>
<groupId>org.apache.geronimo.specs</groupId>
<artifactId>geronimo-javamail_1.4_spec</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-transports-http</artifactId>
<version>2.7.1</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.1</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>
I expected the geronimo-javamail_1.4_spec package to be excluded from the build and, indeed, when I run mvn dependency:tree, it is no longer listed there.
However, when running the resulting jar, the JarClassLoader still complains about javax/mail classes being hidden by the geronimo ones...
Sure enough, when I examine the jar via 7-zip, I see that geronimo-javamail_1.4_spec-1.7.1.jar is still there (comes as part of the org.apache.cxf:cxf-api:jar:2.7.1:compile package).
How do I fully exclude a package? i.e. not only remove it from the dependency tree, but also not include it at all in the resulting jar?
Adding the onejar relevant xml per the comment below:
<plugin>
<groupId>com.jolira</groupId>
<artifactId>onejar-maven-plugin</artifactId>
<version>1.4.4</version>
<executions>
<execution>
<configuration>
<mainClass>com.corp.dept.proj.myclient</mainClass>
<onejarVersion>0.97</onejarVersion>
<attachToBuild>true</attachToBuild>
<!-- Optional, default is "onejar" -->
<classifier>onejar</classifier>
</configuration>
<goals>
<goal>one-jar</goal>
</goals>
</execution>
</executions>
</plugin>
Adding the output of the mvn dependency after the scope & debug options were specified per the answer below:
C:\Users\withheld\workspace\myclient>mvn dependency:tree -Dscope=runtime -Ddebug=true
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'dependency'.
[INFO] org.apache.maven.plugins: checking for updates from onejar-maven-plugin.googlecode.com
[INFO] org.codehaus.mojo: checking for updates from onejar-maven-plugin.googlecode.com
[INFO] ------------------------------------------------------------------------
[INFO] Building myclient
[INFO] task-segment: [dependency:tree]
[INFO] ------------------------------------------------------------------------
Downloading: http://repo1.maven.org/maven2/com/oracle/ojdbc14/14/ojdbc14-14.pom
[INFO] Unable to find resource 'com.oracle:ojdbc14:pom:14' in repository central (http://repo1.maven.org/maven2)
[INFO] [dependency:tree {execution: default-cli}]
[INFO] com.corp.dept.proj:myclient:jar:0.0.6
[INFO] +- junit:junit:jar:3.8.1:test
[INFO] +- com.oracle:ojdbc14:jar:14:compile
[INFO] +- org.apache.cxf:cxf-rt-frontend-jaxws:jar:2.7.1:runtime
[INFO] | +- xml-resolver:xml-resolver:jar:1.2:runtime
[INFO] | +- asm:asm:jar:3.3.1:runtime
[INFO] | +- org.apache.cxf:cxf-rt-bindings-soap:jar:2.7.1:runtime
[INFO] | | \- org.apache.cxf:cxf-rt-databinding-jaxb:jar:2.7.1:runtime
[INFO] | +- org.apache.cxf:cxf-rt-bindings-xml:jar:2.7.1:runtime
[INFO] | +- org.apache.cxf:cxf-rt-frontend-simple:jar:2.7.1:runtime
[INFO] | \- org.apache.cxf:cxf-rt-ws-addr:jar:2.7.1:runtime
[INFO] | \- org.apache.cxf:cxf-rt-ws-policy:jar:2.7.1:runtime
[INFO] | \- org.apache.neethi:neethi:jar:3.0.2:runtime
[INFO] +- org.apache.cxf:cxf-rt-transports-http:jar:2.7.1:compile
[INFO] | \- org.apache.cxf:cxf-rt-core:jar:2.7.1:compile
[INFO] | \- com.sun.xml.bind:jaxb-impl:jar:2.1.13:compile
[INFO] +- org.springframework:spring-web:jar:3.0.7.RELEASE:compile
[INFO] | +- aopalliance:aopalliance:jar:1.0:compile
[INFO] | +- org.springframework:spring-beans:jar:3.0.7.RELEASE:compile
[INFO] | +- org.springframework:spring-context:jar:3.0.7.RELEASE:compile
[INFO] | | +- org.springframework:spring-aop:jar:3.0.7.RELEASE:compile
[INFO] | | +- org.springframework:spring-expression:jar:3.0.7.RELEASE:compile
[INFO] | | \- org.springframework:spring-asm:jar:3.0.7.RELEASE:compile
[INFO] | \- org.springframework:spring-core:jar:3.0.7.RELEASE:compile
[INFO] | \- commons-logging:commons-logging:jar:1.1.1:compile
[INFO] +- mysql:mysql-connector-java:jar:5.1.26:compile
[INFO] +- org.hibernate:hibernate-core:jar:4.2.6.Final:compile
[INFO] | +- antlr:antlr:jar:2.7.7:compile
[INFO] | +- org.jboss.logging:jboss-logging:jar:3.1.0.GA:compile
[INFO] | +- dom4j:dom4j:jar:1.6.1:compile
[INFO] | +- org.jboss.spec.javax.transaction:jboss-transaction-api_1.1_spec:jar:1.0.1.Final:compile
[INFO] | +- org.hibernate.javax.persistence:hibernate-jpa-2.0-api:jar:1.0.1.Final:compile
[INFO] | +- org.hibernate.common:hibernate-commons-annotations:jar:4.0.2.Final:compile
[INFO] | \- org.javassist:javassist:jar:3.15.0-GA:compile
[INFO] +- org.apache.cxf:cxf-api:jar:2.7.1:compile
[INFO] | +- org.codehaus.woodstox:woodstox-core-asl:jar:4.1.4:runtime
[INFO] | | \- org.codehaus.woodstox:stax2-api:jar:3.1.1:runtime
[INFO] | +- org.apache.ws.xmlschema:xmlschema-core:jar:2.0.3:compile
[INFO] | \- wsdl4j:wsdl4j:jar:1.6.2:compile
[INFO] +- javax.servlet:servlet-api:jar:2.5:compile
[INFO] +- javax.mail:mail:jar:1.4.1:compile
[INFO] \- javax.activation:activation:jar:1.1.1:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4 seconds
[INFO] Finished at: Thu Apr 24 11:22:49 EDT 2014
[INFO] Final Memory: 20M/49M
[INFO] ------------------------------------------------------------------------
回答1:
The onejar plugin adds all artifacts from maven's runtime scope, as it should be.
The command mvn dependency:tree does not seem to list all runtime dependencies properly though. Could be a bug, I don't know why.
Luckily, by adding a few parameters you can have all runtime scope dependencies listed.
mvn dependency:tree -Dscope=runtime -Ddebug=true
This will show that cxf-rt-core also has geronimo-javamail as dependency. So, your solution would be to explicitly add the core jar with an exclusion to your dependencies.
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-rt-core</artifactId>
<version>2.7.1</version>
<exclusions>
<exclusion>
<groupId>org.apache.geronimo.specs</groupId>
<artifactId>geronimo-javamail_1.4_spec</artifactId>
</exclusion>
</exclusions>
</dependency>
来源：https://stackoverflow.com/questions/23019214/how-to-really-fully-exclude-a-package-from-a-jar