Package org.gradle.api.publish.maven

Interface MavenPublication

All Superinterfaces:
Named, Publication
public interface MavenPublication extends Publication
A MavenPublication is the representation/configuration of how Gradle should publish something in Maven format. You directly add a named Maven publication the project's publishing.publications container by providing MavenPublication as the type. 
 publishing {
   publications {
     myPublicationName(MavenPublication) {
       // Configure the publication here
     }
   }
 }
The default Maven POM identifying attributes are mapped as follows:
  • groupId - project.group
  • artifactId - project.name
  • version - project.version

For certain common use cases, it's often sufficient to specify the component to publish, and nothing more (from(org.gradle.api.component.SoftwareComponent). The published component is used to determine which artifacts to publish, and which dependencies should be listed in the generated POM file.

To add additional artifacts to the set published, use the artifact(Object) and artifact(Object, org.gradle.api.Action) methods. You can also completely replace the set of published artifacts using setArtifacts(Iterable). Together, these methods give you full control over what artifacts will be published.

To customize the metadata published in the generated POM, set properties, e.g. MavenPom.getDescription(), on the POM returned via the getPom() method or directly by an action (or closure) passed into pom(org.gradle.api.Action). As a last resort, it is possible to modify the generated POM using the MavenPom.withXml(org.gradle.api.Action) method. 

 // Example of publishing a Java module with a source artifact and a customized POM
 plugins {
     id 'java'
     id 'maven-publish'
 }

 task sourceJar(type: Jar) {
   from sourceSets.main.allJava
   archiveClassifier = "sources"
 }

 publishing {
   publications {
     myPublication(MavenPublication) {
       from components.java
       artifact sourceJar
       pom {
         name = "Demo"
         description = "A demonstration of Maven POM customization"
         url = "http://www.example.com/project"
         licenses {
           license {
             name = "The Apache License, Version 2.0"
             url = "http://www.apache.org/licenses/LICENSE-2.0.txt"
           }
         }
         developers {
           developer {
             id = "johnd"
             name = "John Doe"
             email = "john.doe@example.com"
           }
         }
         scm {
           connection = "scm:svn:http://subversion.example.com/svn/project/trunk/"
           developerConnection = "scm:svn:https://subversion.example.com/svn/project/trunk/"
           url = "http://subversion.example.com/svn/project/trunk/"
         }
       }
     }
   }
 }
Since:
1.4

  • Method Details

    • getPom

      MavenPom getPom()
      The POM that will be published.
      Returns:
      The POM that will be published.

    • pom

      void pom(Action<? super MavenPom> configure)
      Configures the POM that will be published. The supplied action will be executed against the getPom() result. This method also accepts a closure argument, by type coercion.
      Parameters:
      configure - The configuration action.

    • from

      void from(SoftwareComponent component)
      Provides the software component that should be published.
      • Any artifacts declared by the component will be included in the publication.
      • The dependencies declared by the component will be included in the published meta-data.
      Currently 3 types of component are supported: 'components.java' (added by the JavaPlugin), 'components.web' (added by the WarPlugin) and `components.javaPlatform` (added by the JavaPlatformPlugin). For any individual MavenPublication, only a single component can be provided in this way. The following example demonstrates how to publish the 'java' component to a Maven repository. 
       plugins {
     id 'java'
     id 'maven-publish'
 }

 publishing {
   publications {
     maven(MavenPublication) {
       from components.java
     }
   }
 }
      Parameters:
      component - The software component to publish.

    • artifact

      MavenArtifact artifact(Object source)
      Creates a custom MavenArtifact to be included in the publication. The artifact method can take a variety of input:
      • A PublishArtifact instance. Extension and classifier values are taken from the wrapped instance.
      • An AbstractArchiveTask instance. Extension and classifier values are taken from the wrapped instance.
      • Anything that can be resolved to a File via the Project.file(Object) method. Extension and classifier values are interpolated from the file name.
      • A Map that contains a 'source' entry that can be resolved as any of the other input types, including file. This map can contain a 'classifier' and an 'extension' entry to further configure the constructed artifact.
      The following example demonstrates the addition of various custom artifacts. 
       plugins {
     id 'maven-publish'
 }

 task sourceJar(type: Jar) {
   archiveClassifier = "sources"
 }

 publishing {
   publications {
     maven(MavenPublication) {
       artifact sourceJar // Publish the output of the sourceJar task
       artifact 'my-file-name.jar' // Publish a file created outside of the build
       artifact source: sourceJar, classifier: 'src', extension: 'zip'
     }
   }
 }
      Parameters:
      source - The source of the artifact content.

    • artifact

      MavenArtifact artifact(Object source, Action<? super MavenArtifact> config)
      Creates an MavenArtifact to be included in the publication, which is configured by the associated action. The first parameter is used to create a custom artifact and add it to the publication, as per artifact(Object). The created MavenArtifact is then configured using the supplied action, which can override the extension or classifier of the artifact. This method also accepts the configure action as a closure argument, by type coercion. 
       plugins {
     id 'maven-publish'
 }

 task sourceJar(type: Jar) {
   archiveClassifier = "sources"
 }

 publishing {
   publications {
     maven(MavenPublication) {
       artifact(sourceJar) {
         // These values will be used instead of the values from the task. The task values will not be updated.
         classifier = "src"
         extension = "zip"
       }
       artifact("my-docs-file.htm") {
         classifier = "documentation"
         extension = "html"
       }
     }
   }
 }
      Parameters:
      source - The source of the artifact.
      config - An action to configure the values of the constructed MavenArtifact.

    • setArtifacts

      void setArtifacts(Iterable<?> sources)
      Clears any previously added artifacts from getArtifacts() and creates artifacts from the specified sources. Each supplied source is interpreted as per artifact(Object). For example, to exclude the dependencies declared by a component and instead use a custom set of artifacts: 
       plugins {
     id 'java'
     id 'maven-publish'
 }

 task sourceJar(type: Jar) {
   archiveClassifier = "sources"
 }

 publishing {
   publications {
     maven(MavenPublication) {
       from components.java
       artifacts = ["my-custom-jar.jar", sourceJar]
     }
   }
 }
      Parameters:
      sources - The set of artifacts for this publication.

    • getArtifacts

      MavenArtifactSet getArtifacts()
      Returns the complete set of artifacts for this publication.
      Returns:
      the artifacts.

    • getGroupId

      String getGroupId()
      Returns the groupId for this publication.

    • setGroupId

      void setGroupId(String groupId)
      Sets the groupId for this publication.

    • getArtifactId

      String getArtifactId()
      Returns the artifactId for this publication.

    • setArtifactId

      void setArtifactId(String artifactId)
      Sets the artifactId for this publication.

    • getVersion

      String getVersion()
      Returns the version for this publication.

    • setVersion

      void setVersion(String version)
      Sets the version for this publication.

    • versionMapping

      void versionMapping(Action<? super VersionMappingStrategy> configureAction)
      Configures the version mapping strategy. For example, to use resolved versions for runtime dependencies: 
       plugins {
     id 'java'
     id 'maven-publish'
 }

 publishing {
   publications {
     maven(MavenPublication) {
       from components.java
       versionMapping {
         usage('java-runtime'){
           fromResolutionResult()
         }
       }
     }
   }
 }
      Parameters:
      configureAction - the configuration
      Since:
      5.2

    • suppressPomMetadataWarningsFor

      void suppressPomMetadataWarningsFor(String variantName)
      Silences the compatibility warnings for the Maven publication for the specified variant. Warnings are emitted when Gradle features are used that cannot be mapped completely to Maven POM.
      Parameters:
      variantName - the variant to silence warning for
      Since:
      6.0

    • suppressAllPomMetadataWarnings

      void suppressAllPomMetadataWarnings()
      Silences all the compatibility warnings for the Maven publication. Warnings are emitted when Gradle features are used that cannot be mapped completely to Maven POM.
      Since:
      6.0