Step by step guide to deploying arftifacts to maven central. For this blog we will use Github

Prerequisites

Step1: Make sure if you have installed JDK,Maven, Git etc.

Step 8: Install GNU PG

Download from https://www.gnupg.org/download/ and install in your OS, verify as follows

	C:\Users\Nadeem>gpg --version
	gpg (GnuPG) 2.1.15
	libgcrypt 1.7.3
	Copyright (C) 2016 Free Software Foundation, Inc.
	License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
	This is free software: you are free to change and redistribute it.
	There is NO WARRANTY, to the extent permitted by law.

	Home: C:/Users/Nadeem/AppData/Roaming/gnupg
	Supported algorithms:
	Pubkey: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
	Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
	CAMELLIA128, CAMELLIA192, CAMELLIA256
	Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
	Compression: Uncompressed, ZIP, ZLIB, BZIP2

	C:\Users\Nadeem>

view raw gpg-verify.ps1 hosted with ❤ by GitHub

Step 9: Generate the key pair

It would prompt you for phrase

Publishing Steps

Step 1: Add distributed management section in your POM.

Add deploy plugin

Add distribution Management Section in your POM

Step 2: Add ossrh server detail into your settings.xml under M2_REPO home.

Id element of servers/server in settings.xml should be identical to id element of snapshotRepository and repository in your POM file.

Step 3: Add SCM section in your POM

Step 4: Add maven release plugin

Add GPG passphrase as profile in maven settings.xml, passphrase you have generated while generating the key

Add nexus staging maven plugin

Step 5 : Add source and javadoc plugin

Step 6: Configure to Sign artificats while releasing

Configure to sign artifacts while releasing

Step 7: Publish GPG key pair

Distribute your key to GPG servers

gpg --keyserver [KEY_SERVER] --send-key [KEY_ID]

gpg --keyserver http://keys.gnupg.net:11371/ --send-key  7743E4C5134ABD42997425B1BF725DE4CBBC7E00

KEY_ID in the above case is 5694AA563793429557F1727835B3BD2A223A

Some of the key servers

Step 8: Do the release

mvn clean

mvn release:prepare

mvn release:perform

Step 9: push the tag and code to your remote repo

git push –tags

git push origin master

Step 10: Verify the sonatype repository

Step 11: Update the Sonatype Jira Ticket

Refer this example POM file for more detail

If something goes wrong

Step 1: Undo the release

git reset –hard HEAD~1(You may have to do it second time, depending upon when the error happened)

git reset –hard HEAD~1

Step 2: Delete the tag

git tag -d tagName

git push origin :refs/tags/tagName

Craftsman Nadeem

Category Archives: Release

Publish Your Artifacts To Maven Central