CI/CD Pipeline with Jenkins, Maven, and Nexus for a Spring Boot Project

Demo repository: https://github.com/zeyangli/springboot-helloworld.git

Overall Goal

Developers commit code and update the pom.xml information. Jenkins reads the pom file, uploads the built artifact to Nexus via the Nexus plugin, and then obtains the latest package download URL from Nexus.

Project Configuration

pom.xml File

groupId: short business name

artifactId: application name

version: version number

<groupId>demo</groupId>
<artifactId>demo-devops-service</artifactId>
<version>4.0</version>

Note: The version must be changed for each update because the release Maven repository does not allow overwriting the same version.

Nexus (Create Repository)

Jenkins (CI)

Install plugin: Pipeline Utility Steps

Install plugin: Nexus Artifact Uploader

Configure scriptApproval to allow approvals

node("master"){
    
    stage("Get Code"){
        checkout scm
    }
    
    stage("Build & Unit Test"){
        def mvnHome="/usr/local/apache-maven-3.6.0"
        sh "${mvnHome}/bin/mvn clean install "
        
    }
    
    stage("Scan Code"){
        println("code scan")
        
    }
    
    stage("Push Nexus"){
        def pom = readMavenPom file: 'pom.xml'
        nexusArtifactUploader(artifacts: [[artifactId: "${pom.artifactId}",
                                           classifier: '',
                                           file: "./target/${pom.artifactId}-${pom.version}.${pom.packaging}",
                                           type: "${pom.packaging}"]],
                              credentialsId: 'nexus-admin',
                              groupId: "${pom.groupId}",
                              nexusUrl: '192.168.0.44:8081',
                              nexusVersion: 'nexus3',
                              protocol: 'http',
                              repository: "${pom.groupId}",
                              version: "${pom.version}")
        
    }
    
    stage("To Email "){
        
        
    }
}

Jenkins (CD)

Install plugin: Maven Artifact ChoiceListProvider (Nexus)

Build