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Publishing Repo to Maven Central

· 2 min read

Open in Notion

Create an account on oss.sonatype.org​

Create an account and create an ISSUE about Repo. And waiting approved.

Generate and share a PGP signature​

Installing GnuPG

gpg --version

Generating a Key Pair and Sharing Key

gpg --generate-key
gpg --list-keys --keyid-format short
gpg --list-secret-keys --keyid-format short
gpg --keyserver hkp://pool.sks-keyservers.net --send-keys <pubkeyid>
// gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys <pubkeyid>

Delete Key or Sub Key

gpg2 –edit-key A6BAB25  
gpg> 1  
gpg> save  
gpg> key 2  
gpg> delkey

Local GPG​

Add ~/.gradle/gradle.properties with following content:

signing.keyId=<pubkeyid>
signing.password=<passwordgpg>
// For new version GPG, secring.gpg does not be used.
// But you can still use `gpg --export-secret-keys > ~/.gnupg/secring.gpg` to generate
// On windows, you can use `C:/Users/<yourname>/.gnupg/secring.gpg` instead.
signing.secretKeyRingFile=/Users/<yourname>/.gnupg/secring.gpg

ossrhUsername=<name>
ossrhPassword=<password>

Project Configuration​

build.gradle example:

group ‘net.bndy’  
version ‘1.0’

apply plugin: ‘java’  
apply plugin: ‘maven’  
apply plugin: ‘signing’

sourceCompatibility = 1.8

repositories {  
  mavenCentral()  
}

dependencies {  
  testCompile group: ‘junit’, name: ‘junit’, version: ‘4.12’  
  compile group: ‘com.fasterxml.jackson.core’, name: ‘jackson-core’, version: ‘2.9.3’  
  compile group: ‘com.fasterxml.jackson.core’, name: ‘jackson-databind’, version: ‘2.9.3’  
  compile group: ‘commons-codec’, name: ‘commons-codec’, version: ‘1.11’  
  compile group: ‘javax.mail’, name: ‘javax.mail-api’, version: ‘1.6.0’  
  compile group: ‘org.apache.directory.studio’, name: ‘org.apache.commons.io’, version: ‘2.4’  
  compile group: ‘javax.servlet’, name: ‘servlet-api’, version: ‘2.5’  
}

task javadocJar(type: Jar) {  
  classifier = ‘javadoc’  
  from javadoc  
}

task sourcesJar(type: Jar) {  
  classifier = ‘sources’  
  from sourceSets.main.allSource  
}

artifacts {  
  archives javadocJar, sourcesJar  
}

signing {  
  sign configurations.archives  
}

uploadArchives {  
  repositories {  
    mavenDeployer {  
      beforeDeployment { 
        MavenDeployment deployment -> signing.signPom(deployment)
      }

    repository(url: “https://oss.sonatype.org/service/local/staging/deploy/maven2/”) {  
      authentication(userName: ossrhUsername, password: ossrhPassword)  
    }

    snapshotRepository(url: “https://oss.sonatype.org/content/repositories/snapshots/”) {  
      authentication(userName: ossrhUsername, password: ossrhPassword)  
    }

    pom.project {  
      name ‘Jlib’  
      packaging ‘jar’

      // optionally artifactId can be defined here  
      description ‘A Java Library’  
      url ‘https://github.com/bndynet/Jlib’

      scm {
        url ‘https://github.com/bndynet/Jlib’  
        connection ‘scm:git:git://github.com/bndynet/Jlib.git’  
        developerConnection ‘scm:git:git@github.com:bndynet/Jlib.git’  
      }

      licenses {  
        license {  
          name ‘The Apache License, Version 2.0’  
          url ‘http://www.apache.org/licenses/LICENSE-2.0.txt’  
        }
      }

      developers {  
        developer {  
          id ‘bndynet’  
          name ‘Bendy Zhang’  
          email ‘zb@bndy.net’  
          url ‘http://bndy.net’  
        }
      }
    }
  }
}

Deployment​

  1. gradle uploadArchives
  2. Go to https://oss.sonatype.org/#stagingRepositories to close your repo. If closed successfully, you can release it. Otherwise, drop it and regradle it again.