How to call REST API to external server from Jenkins when finish build

Question

I want to know how to call rest api to external server from jenkins when finish build.

I using HTTP Request plug-in, but there is no HTTP Request on 'Post-build action'

is it impossible?

Answer 1

AFAIK you cannot execute additional plugins that are not listed using a Free Style Job. The best option for you, is to convert your Free Style Job to a Declarative Pipeline. You can read more about Declarative Pipelines from here. Once you move to a Declarative Pipeline you can invoke the HTTP Request Plugin like below.

pipeline {
    agent any

    tools {
        // Install the Maven version configured as "M3" and add it to the path.
        maven "M3"
    }

    stages {
        stage('Build') {
            steps {
                // Get some code from a GitHub repository
                git 'https://github.com/jglick/simple-maven-project-with-tests.git'

                // Run Maven on a Unix agent.
                sh "mvn -Dmaven.test.failure.ignore=true clean package"

            }

            post {
                success {
                   script {
                       echo "This will execute if the Job is Successful"
                       def response = httpRequest 'http://localhost:8080/jenkins/api/json?pretty=true'
                    }
                }
            }
        }
    }
}