Dependencies

Links

• Dependency

Exclude and Provided

The sample code below shows how to mark a dependency as provided. In this case it will be included in the classpath when compiling, but will not be included in the generated artifact (e.g. war file).

The sample code below also shows how to exclude transitive dependencies from a project. Note: It appears that the exclusion will remove the dependency from the build even if it is included elsewhere.

<dependencies>
  <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.4</version>
    <scope>provided</scope>
  </dependency>
  <dependency>
    <groupId>commons-dbcp</groupId>
    <artifactId>commons-dbcp</artifactId>
    <version>1.2.1</version>
  </dependency>
  <dependency>
    <groupId>com.mycompany</groupId>
    <artifactId>lucene-app</artifactId>
    <version>1.0</version>
    <exclusions>
      <exclusion>
        <groupId>fontbox</groupId>
        <artifactId>fontbox</artifactId>
      </exclusion>
      <exclusion>
        <groupId>nekohtml</groupId>
        <artifactId>nekohtml</artifactId>
      </exclusion>
    </exclusions>
  </dependency>
</dependencies>

System Dependencies

System Dependencies

…usually used to tell Maven about dependencies which are provided by the JDK or the VM:

<project>
  ...
  <dependencies>
    <dependency>
      <groupId>javax.sql</groupId>
      <artifactId>jdbc-stdext</artifactId>
      <version>2.0</version>
      <scope>system</scope>
      <systemPath>${java.home}/lib/rt.jar</systemPath>
    </dependency>
  </dependencies>