# Integrate Jenkins with Maven (without Maven Integration plugin)

By
Paul Tomoiu
●
In 
●
Published 2022-12-03

This tutorial explains to you how to integrate Jenkins with Maven (without Maven Integration plugin).

For doing this we will create the executable jar file for a Spring Boot Maven application in Jenkins.

We need to create a simple Jenkins job first.

What is important, is to set a build step for running Maven. For doing this we need to choose "Invoke top-level Maven targets":

We need also to define the Maven goals and the pom.xml file location:

Click on "Save" button in order to persist the change.

Now we can run the job to see if the jar file is created. We can run the job 2 times. The first time, we can see that Maven will download the needed jar. On a second run, Maven will not download the dependencies again and the job will complete faster.

The second run will have an output like this:

Started by user admin
Running as SYSTEM
[EnvInject] - Loading node environment variables.
Building in workspace C:\ProgramData\Jenkins\.jenkins\workspace\Job1
[WS-CLEANUP] Deleting project workspace...
[WS-CLEANUP] Deferred wipeout is used...
[WS-CLEANUP] Done
[EnvInject] - Executing scripts and injecting environment variables after the SCM step.
[EnvInject] - Injecting as environment variables the properties content 
JAVA_HOME="C:\MySOFT\Java\jdk-19.0.1"

[EnvInject] - Variables injected successfully.
[Job1] $ cmd.exe /C "mvn -f D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo\pom.xml clean package && exit %%ERRORLEVEL%%"
[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for com.example:rest-demo:jar:v1
[WARNING] The expression ${parent.version} is deprecated. Please use ${project.parent.version} instead.
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING] 
[INFO] 
[INFO] -----------------------< com.example:rest-demo >------------------------
[INFO] Building rest-demo v1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:3.2.0:clean (default-clean) @ rest-demo ---
[INFO] Deleting D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo\target
[INFO] 
[INFO] --- maven-resources-plugin:3.3.0:resources (default-resources) @ rest-demo ---
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.10.1:compile (default-compile) @ rest-demo ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 4 source files to D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo\target\classes
[INFO] 
[INFO] --- maven-resources-plugin:3.3.0:testResources (default-testResources) @ rest-demo ---
[INFO] skip non existing resourceDirectory D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo\src\test\resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.10.1:testCompile (default-testCompile) @ rest-demo ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo\target\test-classes
[INFO] 
[INFO] --- maven-surefire-plugin:2.22.2:test (default-test) @ rest-demo ---
[INFO] 
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running com.example.restdemo.RestDemoApplicationTests
19:55:23.568 [main] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Neither @ContextConfiguration nor @ContextHierarchy found for test class [RestDemoApplicationTests]: using SpringBootContextLoader
19:55:23.572 [main] DEBUG org.springframework.test.context.support.AbstractContextLoader - Could not detect default resource locations for test class [com.example.restdemo.RestDemoApplicationTests]: no resource found for suffixes {-context.xml, Context.groovy}.
19:55:23.572 [main] INFO org.springframework.test.context.support.AnnotationConfigContextLoaderUtils - Could not detect default configuration classes for test class [com.example.restdemo.RestDemoApplicationTests]: RestDemoApplicationTests does not declare any static, non-private, non-final, nested classes annotated with @Configuration.
19:55:23.591 [main] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Using ContextCustomizers for test class [RestDemoApplicationTests]: [ExcludeFilterContextCustomizer, DuplicateJsonObjectContextCustomizer, MockitoContextCustomizer, TestRestTemplateContextCustomizer, DisableObservabilityContextCustomizer, PropertyMappingContextCustomizer, Customizer]
19:55:23.648 [main] DEBUG org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider - Identified candidate component class: file [D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo\target\classes\com\example\restdemo\RestDemoApplication.class]
19:55:23.649 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Found @SpringBootConfiguration com.example.restdemo.RestDemoApplication for test class com.example.restdemo.RestDemoApplicationTests
19:55:23.724 [main] DEBUG org.springframework.test.context.util.TestContextSpringFactoriesUtils - Skipping candidate TestExecutionListener [org.springframework.test.context.transaction.TransactionalTestExecutionListener] due to a missing dependency. Specify custom TestExecutionListener classes or make the default TestExecutionListener classes and their required dependencies available. Offending class: [org/springframework/transaction/interceptor/TransactionAttributeSource]
19:55:23.725 [main] DEBUG org.springframework.test.context.util.TestContextSpringFactoriesUtils - Skipping candidate TestExecutionListener [org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener] due to a missing dependency. Specify custom TestExecutionListener classes or make the default TestExecutionListener classes and their required dependencies available. Offending class: [org/springframework/transaction/interceptor/TransactionAttribute]
19:55:23.727 [main] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Using TestExecutionListeners for test class [RestDemoApplicationTests]: [ServletTestExecutionListener, DirtiesContextBeforeModesTestExecutionListener, ApplicationEventsTestExecutionListener, MockitoTestExecutionListener, DependencyInjectionTestExecutionListener, DirtiesContextTestExecutionListener, EventPublishingTestExecutionListener, ResetMocksTestExecutionListener, RestDocsTestExecutionListener, MockRestServiceServerResetTestExecutionListener, MockMvcPrintOnlyOnFailureTestExecutionListener, WebDriverTestExecutionListener, MockWebServiceServerTestExecutionListener]
19:55:23.728 [main] DEBUG org.springframework.test.context.support.AbstractDirtiesContextTestExecutionListener - Before test class: class [RestDemoApplicationTests], class annotated with @DirtiesContext [false] with mode [null]

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v3.0.1)

2023-01-23T19:55:23.966+02:00  INFO 11748 --- [           main] c.e.restdemo.RestDemoApplicationTests    : Starting RestDemoApplicationTests using Java 19.0.1 with PID 11748 (started by DELL-LAPTOP$ in D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo)
2023-01-23T19:55:23.967+02:00  INFO 11748 --- [           main] c.e.restdemo.RestDemoApplicationTests    : No active profile set, falling back to 1 default profile: "default"
2023-01-23T19:55:24.913+02:00  INFO 11748 --- [           main] c.e.restdemo.RestDemoApplicationTests    : Started RestDemoApplicationTests in 1.158 seconds (process running for 1.884)
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.847 s - in com.example.restdemo.RestDemoApplicationTests
[INFO] 
[INFO] Results:
[INFO] 
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0
[INFO] 
[INFO] 
[INFO] --- maven-jar-plugin:3.3.0:jar (default-jar) @ rest-demo ---
[INFO] Building jar: D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo\target\rest-demo-v1.jar
[INFO] 
[INFO] --- spring-boot-maven-plugin:3.0.1:repackage (repackage) @ rest-demo ---
[INFO] Replacing main artifact with repackaged archive
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  6.127 s
[INFO] Finished at: 2023-01-23T19:55:26+02:00
[INFO] ------------------------------------------------------------------------
Finished: SUCCESS

As you can see, Maven could be run from Jenkins.

This integration could be improved by using Maven Integration plugin.

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