# Upload a file to Nexus

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

This tutorial explains to you how we can integrate Maven with Nexus repository. I will show how Maven can upload artifacts to Nexus repository.

Prerequisites for this demo:

  • we have a Nexus repository named "nexus-repo-1" (format: maven2, type: hosted)
  • we have a Spring Boot application which uses Maven

Here are the steps for integrating Maven with Nexus repository:

  • take a loot at maven configuration

Run the following command:

mvn -X

This command will get a lot of information and errors, but we need to find in the message something like this:

[DEBUG] Reading global settings from C:\MySOFT\maven\apache-maven-3.8.7\conf\settings.xml
[DEBUG] Reading user settings from C:\Users\Catalin\.m2\settings.xml

Now we know which settings.xml files are used by Maven.

Here are the steps for integrating Maven with Nexus:

  • add Nexus information in settings.xml file

In my case I have no C:\Users\Catalin.m2\settings.xml file and I will create it.

I will add this information in it:

<settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">

	<servers>
	  <server>
		<id>nexus-repo-1</id>
		<username>admin</username>
		<password>1</password>
	  </server>
	</servers>

</settings>

Here we need to define a server, which is our repository id. The credentials for this server are put here as well.

  • add the needed information in pom.xml file

I added the following in pom.xml file:

	<distributionManagement>
		<repository>
			<id>nexus-repo-1</id>
			<url>http://localhost:8081/repository/nexus-repo-1/</url>
		</repository>
	</distributionManagement>

Here you have the full content of my pom.xml file:

pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>3.0.1</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>rest-demo</artifactId>
	<version>v1</version>
	<packaging>jar</packaging>
	<name>rest-demo</name>
	<description>Demo for Spring Boot REST API</description>
	<properties>
		<java.version>19</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>

			<!-- exclude junit 4 -->
			<exclusions>
				<exclusion>
					<groupId>junit</groupId>
					<artifactId>junit</artifactId>
				</exclusion>
			</exclusions>

		</dependency>

		<!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
		<dependency>
			<groupId>com.google.code.gson</groupId>
			<artifactId>gson</artifactId>
			<version>2.10.1</version>
		</dependency>

		<!-- junit 5 -->
		<dependency>
			<groupId>org.junit.jupiter</groupId>
			<artifactId>junit-jupiter-api</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>org.junit.jupiter</groupId>
			<artifactId>junit-jupiter-engine</artifactId>
			<scope>test</scope>
		</dependency>

	</dependencies>

	<distributionManagement>
		<repository>
			<id>nexus-repo-1</id>
			<url>http://localhost:8081/repository/nexus-repo-1/</url>
		</repository>
	</distributionManagement>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<version>${parent.version}</version>
			</plugin>
		</plugins>
	</build>

</project>

Now Maven is integrated with Nexus. For testing this, we can go to the Spring Boot project directory and run the following command:

mvn deploy

For more information about Maven lifecycles, take a look here

Here is the log of the command:

[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-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] Nothing to compile - all classes are up to date
[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] Nothing to compile - all classes are up to date
[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
23:03:06.859 [main] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Neither @ContextConfiguration nor @ContextHierarchy found for test class [RestDemoApplicationTests]: using SpringBootContextLoader
23:03:06.863 [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}.
23:03:06.863 [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.
23:03:06.885 [main] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Using ContextCustomizers for test class [RestDemoApplicationTests]: [ExcludeFilterContextCustomizer, DuplicateJsonObjectContextCustomizer, MockitoContextCustomizer, TestRestTemplateContextCustomizer, DisableObservabilityContextCustomizer, PropertyMappingContextCustomizer, Customizer]
23:03:06.950 [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]
23:03:06.952 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Found @SpringBootConfiguration com.example.restdemo.RestDemoApplication for test class com.example.restdemo.RestDemoApplicationTests
23:03:07.035 [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]
23:03:07.037 [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]
23:03:07.039 [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]
23:03:07.039 [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)

2023-01-25T23:03:07.307+02:00  INFO 12504 --- [           main] c.e.restdemo.RestDemoApplicationTests    : Starting RestDemoApplicationTests using Java 19.0.1 with PID 12504 (started by Catalin in D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo)
2023-01-25T23:03:07.308+02:00  INFO 12504 --- [           main] c.e.restdemo.RestDemoApplicationTests    : No active profile set, falling back to 1 default profile: "default"
2023-01-25T23:03:08.340+02:00  INFO 12504 --- [           main] c.e.restdemo.RestDemoApplicationTests    : Started RestDemoApplicationTests in 1.272 seconds (process running for 3.199)
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.037 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]
[INFO] --- spring-boot-maven-plugin:3.0.1:repackage (repackage) @ rest-demo ---
[INFO] Replacing main artifact with repackaged archive
[INFO]
[INFO] --- maven-install-plugin:3.0.1:install (default-install) @ rest-demo ---
[INFO] Installing D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo\pom.xml to C:\Users\Catalin\.m2\repository\com\example\rest-demo\v1\rest-demo-v1.pom
[INFO] Installing D:\GitHub-Projects\Projects\Spring-Boot\APIs\SimpleAPI\rest-demo\target\rest-demo-v1.jar to C:\Users\Catalin\.m2\repository\com\example\rest-demo\v1\rest-demo-v1.jar
[INFO]
[INFO] --- maven-deploy-plugin:3.0.0:deploy (default-deploy) @ rest-demo ---
Uploading to nexus-repo-1: http://localhost:8081/repository/nexus-repo-1/com/example/rest-demo/v1/rest-demo-v1.pom
Uploaded to nexus-repo-1: http://localhost:8081/repository/nexus-repo-1/com/example/rest-demo/v1/rest-demo-v1.pom (2.1 kB at 9.7 kB/s)
Uploading to nexus-repo-1: http://localhost:8081/repository/nexus-repo-1/com/example/rest-demo/v1/rest-demo-v1.jar
Uploaded to nexus-repo-1: http://localhost:8081/repository/nexus-repo-1/com/example/rest-demo/v1/rest-demo-v1.jar (19 MB at 35 MB/s)
Downloading from nexus-repo-1: http://localhost:8081/repository/nexus-repo-1/com/example/rest-demo/maven-metadata.xml
Uploading to nexus-repo-1: http://localhost:8081/repository/nexus-repo-1/com/example/rest-demo/maven-metadata.xml
Uploaded to nexus-repo-1: http://localhost:8081/repository/nexus-repo-1/com/example/rest-demo/maven-metadata.xml (294 B at 4.7 kB/s)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  11.118 s
[INFO] Finished at: 2023-01-25T23:03:12+02:00
[INFO] ------------------------------------------------------------------------

Here you can see the phases maven has been executed. The last phase is deploy.

When we go to Nexus repository we can see the content uploaded by Maven:

© Copyright www.free-it-tutorials.com, 2022-2024. All rights reserved. This website does not represent any corporation (Oracle, Microsoft, etc) in any way. This site is not using cookies, but it use some services that might use cookies. All information is supposed to be accurate, but it is not guaranteed to be correct. The usage of the information from this website is strictly at your own risk. If you don't like these policies, you have to stop using the website.