Update Jenkinsfile

Jenkinsfile

 pipeline {
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     agent any
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     stages {
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         stage('Prepare'){
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             agent any
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             steps {
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                 checkout scm
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             }
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-      post {
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+        }post {
             success{
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                 echo 'prepare success'
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             }
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             always{
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                 echo 'done prepare'
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             }
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             cleanup{
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                 echo 'after all other post conditions'
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             }
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         }
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     }
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-
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-pipeline {
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-  agent any
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-  stages {
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-    stage('Prepare') {
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-      agent any
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+    stage('maven build'){
         steps {
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-        checkout scm
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+            sh  'mvn package'
         }
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         post {
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             success{
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-          echo 'prepare success'
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+                echo 'maven build success'
             }
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-        always {
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-          echo 'done prepare'
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         }
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-        cleanup {
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-          echo 'after all other post conditions'
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+        failure {
+            echo 'maven build failed'
         }
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     }
-
 }