So my default maven settings.xml file in my ~/.m2/ folder is containing links to my work repositories. So whenever I run an install on my pom.xml's it try to fetch from the corp nexus maven repositories.
For a hobby project which I am just starting with I don't want to make use of the corp maven nexus, but to make use of the central maven repo. I don't want to replace the entire settings.xml as this would mean reloading the entire local maven repo once I switch back to my corp work.
How can I achieve this ?
Add the following as your first repository in the repositories tag in the settings.xml
<repository>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
<id>central</id>
<url>http://repo1.maven.org/maven2</url>
</repository>
You may also want to use profiles. But, that is not a requirement.
You can also add a repository on your pom
<repositories>
<repository>
<id>central</id>
<url>http://rep1.maven.org/maven2</url>
</repository>
</repositories>
Related
I have a local Java intelli-J project with a pom.xml that has (2) internal repositories on artifactory. The problem is I am doing some testing, and I think one of the JARs is not on this internal repo, so I want to use the regular Maven central repo. I googled and believe, the artifact should go through the list in your pom.xml is the order its listed and try to resolve the artifact, the problem is, even when I add the Maven central repo, it seems to never attempt; only tries the internal artifactory then fails.
In my pom.xml:
<repositories>
<repository>
<id>test</id>
<name>Maven Central</name>
<layout>default</layout>
<url>https://repo1.maven.org/maven2</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>my_repo</id>
<name>MyRepo</name>
<url>https://myinternalrepo.com</url>
</repository>
<repository>
<snapshots />
<id>MySnapShotRepo</id>
<name>MyInternalRepo</name>
<url>https://myinternalreposnapshots.com</url>
</repository>
</repositories>
am I doing something wrong here?
I removed my settings.xml and was able to control the repositories from the pom.xml file tag. It also looks like maven repo is automatically tried whether you list it or not in pom .
Is it possible to add remote repository jar file (https://repo.ah/lib/abc.jar) in maven pom.xml as dependency in java project. if so, can you please share example.
No, it's not possible to add a complete repository as a dependency. This doesn't make sense, because a repository can contain ten thousands of artifacts.
If your project requires artifacts which are not hosted in the standard remote repository, you can specify this via the <repositories> tag in your pom.xml .
<repositories>
<repository>
<id>vaadin-addons</id>
<url>http://maven.vaadin.com/vaadin-addons</url>
</repository>
<repository>
<id>vaadin-snapshots</id>
<url>http://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
More Informations:
Introduction to Repositories
Setting up Multiple Repositories
In the comments you mentioned that the URL is an Artifactory.
So just add the Artifactory as <repository> to your settings.xml and then you can use the jar in your application.
Consider I'm a Maven plugin and I'd like to read Maven Repository Metadata (maven-metadata.xml) for certain group or artifact from a remote repository (Nexus in this case).
Is there a built-in Maven functionality available to a plugin to retrieve this piece of information?
My use case is the following: I've got a list of artifacts in a proprietary file format. Each of these artifacts might have an according configuration artifact stored in Nexus but not listed in the file. Also, not all artifacts have a version applied. Now I'd like to create a standard BOM and I'd like to leverage information available in maven-metadata.xml.
You can use below code.I am doing this in my project and its working for me:
<repositories>
<repository>
<id>YOUR_ID</id>
<url>NEXUS_URL</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
<releases>
<enabled>true</enabled>
</releases>
</repository>
</repositories>
How do I enable access to the Apache commons snapshots from my maven settings configuration file.
add to your pom.xml:
<repositories>
<repository>
<id>repository.apache.org.snapshots</id>
<name>Apache snapshots repo</name>
<url>https://repository.apache.org/content/groups/snapshots/</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
In your question, you ask about "settings" but it's a bad idea to declare this repo. in your settings.xml.
Take a look at the repositories section of the Maven settings reference.
http://maven.apache.org/settings.html#Repositories
In my settings.xml file I have listed repositories that I want Maven to use (see the file below). These repositories are located in the build machine and I am working this way to prevent a build fail when there's is no Internet connection in the build machine.
The problem is that Maven automatically looks for updates in the central repository (and possibly from other non-listed repositories) during the build. Is there a way to prevent this behaviour?
...
<profile>
<id>myProfile</id>
<repositories>
<repository>
<releases>
<updatePolicy>never</updatePolicy>
</releases>
<snapshots>
<updatePolicy>never</updatePolicy>
</snapshots>
<id>myRepo</id>
<url>file://${my.home}/maven/.m2/repository</url>
<layout>default</layout>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<releases>
<updatePolicy>never</updatePolicy>
</releases>
<snapshots>
<updatePolicy>never</updatePolicy>
</snapshots>
<id>myRepo</id>
<url>file://${my.home}/maven/.m2/repository</url>
<layout>default</layout>
</pluginRepository>
</pluginRepositories>
</profile>
...
Note: Using the offline option (e.g. -o flag) is not an option for me. What I really want is Maven to use only the repositories that I list in my settings.xml file.
Every Maven project inherits the configuration for the central repository from the Maven Super POM. You can use Maven's mirrors feature to redirect calls to central to your preferred repository. You do this by adding some configuration to your settings.xml like this:
<settings>
...
<mirrors>
<mirror>
<id>central-proxy</id>
<mirrorOf>central</mirrorOf>
<url>http://myrepository/releases</url>
</mirror>
</mirrors>
..
</settings>
This configuration can either be put in your user settings (${user.home}/.m2/settings.xml) or global settings ({$M2_HOME}/conf/settings.xml).
Set your desired repositories as a mirror of everything else.
More details: http://maven.apache.org/guides/mini/guide-mirror-settings.html