removeduplicatedependencies.md

Remove duplicate Maven dependencies

org.openrewrite.maven.RemoveDuplicateDependencies

Removes duplicated dependencies in the <dependencies> and <dependencyManagement> sections of the pom.xml.

Source

GitHub, Issue Tracker, Maven Central

• groupId: org.openrewrite
• artifactId: rewrite-maven
• version: 8.1.3

Example

{% tabs %} {% tab title="pom.xml" %}

Before

{% code title="pom.xml" %}

<project>
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <version>1</version>

  <dependencies>
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava</artifactId>
      <version>29.0-jre</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.13.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava</artifactId>
      <version>29.0-jre</version>
    </dependency>
  </dependencies>
</project>

{% endcode %}

After

{% code title="pom.xml" %}

<project>
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <version>1</version>

  <dependencies>
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava</artifactId>
      <version>29.0-jre</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.13.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

{% endcode %}

{% endtab %} {% tab title="Diff" %} {% code %}

--- pom.xml
+++ pom.xml
@@ -20,5 +20,0 @@
      <scope>test</scope>
    </dependency>
-   <dependency>
-     <groupId>com.google.guava</groupId>
-     <artifactId>guava</artifactId>
-     <version>29.0-jre</version>
-   </dependency>
  </dependencies>

{% endcode %} {% endtab %} {% endtabs %}

Usage

This recipe has no required configuration parameters and comes from a rewrite core library. It can be activated directly without adding any dependencies. {% tabs %}

{% tab title="Maven POM" %} {% code title="pom.xml" %}

<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>5.2.4</version>
        <configuration>
          <activeRecipes>
            <recipe>org.openrewrite.maven.RemoveDuplicateDependencies</recipe>
          </activeRecipes>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

{% endcode %} {% endtab %}

{% tab title="Maven Command Line" %} You will need to have Maven installed on your machine before you can run the following command. {% code title="shell" %}

mvn -U org.openrewrite.maven:rewrite-maven-plugin:run \
  -Drewrite.activeRecipes=org.openrewrite.maven.RemoveDuplicateDependencies

{% endcode %} {% endtab %} {% endtabs %}

Contributors

• Knut Wannheden
• Jonathan Schnéider

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