lein run results in the following error:
Could not find artifact foo:common:jar:10.11.0 in central (https://repo1.maven.org/maven2/)
Could not find artifact foo:common:jar:10.11.0 in clojars (https://clojars.org/repo/)
However, on my computer, the file ~/.m2/repository/foo/common/10.11.0/common-10.11.0.jar exists. It seems like lein is trying to download the file from central and clojars, even though it already exists on my computer.
This particular jar does not exist in the maven central or clojars, it exists in a private repository, that I only have access to when I'm on a certain network. I'm not on that network right now, so it would really help if lein did not try to download a file that already exists on my computer.
Does anyone know how to fix this?
Update
I got the information that you can run lein in offline mode using lein -o .... This resulted in the following error though:
The repository system is offline but the artifact foo:common:jar:10.11.0 is not available in the local repository.
lein is likely checking for updates, which it won't be able to access while you're off that network, as you had diagnosed.
Run lein with its -o option for offline mode, and it should skip the remote repo checks.
The above sounds good. Also see the following, where you may want to bypass the whole maven jar mechanism and put the jar in ./resources (at least temorarily):
leiningen - how to add dependencies for local jars?
Note carefully the required format of the resource strings!
(defproject test-project "0.1.0-SNAPSHOT"
:description "Blah blah blah"
...
:resource-paths ["resources/Siebel.jar" "resources/SiebelJI_enu.jar"])
See also the option for doing a local maven install in another answer in that link:
mvn deploy:deploy-file -Dfile=jaad-0.8.3.jar -DartifactId=jaad -Dversion=0.8.3 -DgroupId=jaad -Dpackaging=jar -Durl=file:maven_repository
Related
We have a dependency third-party library that is available online in jar form, but it is not in Maven Repository, or known to be in any other repository.
How can we use pom.xml to auto-retrieve this dependency, based on a URL?
We don't want to store it in our Git repo, because that's A Bad Thing.
The idea here is that when people check out the project, they can use their IDE Maven integration (or just mvn command line tools) to download all the dependencies. So we would want to be able to also download this other third party dependency just like all the ones in Maven repo.
I have not been able to come up with an answer to this based on searches -- all solutions seem to be "download it first and create a local repo." Obviously Maven can download from the Internet, since that's how it connects to Maven Central and other repos. So I don't see why it cannot download arbitrary URLs that present packages in recognizable formats.
Long term, the best solution is to use your own artifact repository like Nexus, Artifactory or Archiva.
All of these have a manual upload function that you can use to set the groupId, artifactId and version, so you can then refer to the artifact as usual.
If you want to go really low tech, I think you can just put some machine's local repository behind an Apache, provided you grant read/write access.
Then you need to add your new repository in the Maven settings.xml file, as described here.
Maven uses the coordinates to navigate the repository (which has a specific layout) and verify artifact checksums for corruption/tampering using metadata files in specific locations of the repo.
AFAIK this is similar to other package management systems like APT and RubyGems that use repo manifests and don't allow arbitrary URL downloads.
Skipping the repository manager
If you really don't want or can't use a repository manager, you can always download the artifact and manually install it using the Maven Install Plugin:
mvn install:install-file -Dfile=your-artifact-1.0.jar -DgroupId=org.some.group -DartifactId=your-artifact -Dversion=1.0
However, you'll have to do this on every machine that runs the build, every time that artifact needs to change.
I am trying to run the cmd maven compile install. I have mentioned my needed dependencies in the pom.xml. I know that it will get the needed jars from the local repository or central repository.
The problem is that I dont have internet connection (no connection to central repository). My question is - can I able to do the same with the system having internet connection and get all the required files in local repository by running maven compile install.
Then by copying the entire local repository (.m2 folder) from the networked system to the system without internet connection will make the maven compile install to succeed ?
or any other solution is there ?
please help me out. Thanks
The best solution is to install a repository manager run the build on one machine all the artifacts will be downloaded into the repository manager and from that time you can build that only with access to the repository manager.
An other solution would be to do as you described on one machine with internet access build your project and copy the local repository onto a second machine and run your build there via mvn -o ....
I am new to maven and I heard the term "maven clean repo" building ? What is the meaning of this ? How it different from the normal maven building process ? Also I want to know about the maven repository and how it changes when we build the software
I'm not sure if there is an exact term called "maven clean repo building" - but it is probably referring to doing a clean build by clearing out your entire LOCAL maven repository to ensure you have only the correct dependencies for your project.
All dependencies you need get downloaded into the repository which is at ${user.home}/.m2/repository by default. You can see this grows as the build runs and dependencies get downloaded into this folder.
The link
http://maven.apache.org/plugins/maven-dependency-plugin/examples/purging-local-repository.html explains one way of purging this.
You can change the maven repo being used for the build by providing the following argument to the build command
mvn clean install -Dmaven.repo.local=/tmp/sampleRepo
If relevant artifacts are not available in the pointed maven repo, it will download them from relevant repositories (maven central or repositories which are provided in the pom.xml file).
Hint;) Using a directory in /tmp/ will be more good as /tmp/ get automatically cleared in OS restart.
I don't understand why this is so difficult:
In a script, I need to copy an artifact from nexus to a certain directory. Using the Nexus REST API I would have to specify the repository which I don't want to have to know about. So I tried getting the artifact with maven-dependency-plugin's get goal instead, which works well. (In that case I get it from a group on our nexus which includes both, releases and snapshots.)
However, I now have the artifact in my local repo and the same plugin's "copy" goal does not seem to be able to get that artifact out of there. Is it really necessary to descend into the .m2 folder and grab that jar with the unix cp command? Anybody ever copied artifacts from their local repos to other dirs before?
Alternatively, if someone can tell me how to get an artifact via the Nexus API without specifying the repo, that would work, too.
Just tried this, and it worked for me:
mvn dependency:copy-dependencies -DincludeArtifactIds=jcharts -DincludeGroupIds=jcharts -DoutputDirectory=/tmp/
This copied the artifact jcharts:jcharts to /tmp/ It was in my local (and remote) repo when this was executed.
Seems like the problem was the _maven.repositories file in conjunction with the particular maven setup at my company.
We don't put the info about the local repo in our settings.xml. It's all in the parent pom that all our projects use. But if you want to do some pure mvn-CLI magic you don't have the parent-pom so you have to provide the URL to the local repo yourself. This is possible with the dependecy:get goal, which is why I was able to download my artifact from our Nexus into my local repo.
When using copy, however, you can't specify a URL. But why would I want to? I just downloaded that artifact into my local repo, right?
That's where the _maven.repositories file comes into play. Even with the -o switch, maven3 consults that file, which specifies the original repo that the artifact came from. (thanks to the guys in this thread for posting their findings!). If it can't reach the repo, it will claim that your file isn't there. (Btw., this is not helpful imho. It should say something about the original repo not being reachable and that the file therefore won't be copied.)
This was the reason why copy didn't work for me.
Simply renaming that file does the trick.
I will have to investigate a cleaner solution to this, though.
To make things even more complicated, I couldn't use dependency:copy or dependency:copy-dependecies. For some reasons they require a pom, which I don't have in my usecase. What does work is org.apache.maven.plugins:maven-dependency-plugin:2.8:copy which I believe is supposed to be the same thing, but that's another story.
Thanks for your answers!
If you are using Sonatype Nexus, you should consider disabling "Central" as outlined in their book.
Otherwise, per #Keith, dependency:copy-dependency will do what you are trying to do. dependency:get specially downloads from remote repositories, as stated in the documentation
You can also force Maven to not download from non-local repositories l by running it in offline mode: -o
Edit
You can also use Maven Wagon Plugin to copy the file from your local repository to an arbitrary directory. This shouldn't require a pom (but you may need to provide the full URL to the jar).
I needed to be able to specify the group ID, artifact ID and version (and packaging), this worked for me:
mvn dependency:copy \
-Dartifact=org.openmrs.web:openmrs-webapp:2.2.0-SNAPSHOT:war \
-DoutputDirectory=/tmp
I'm new to maven project.
I'm changing an ant project to maven project.
To install the 3rd party jar's in maven local repository, I used install command.
Its trying to download the resource jar.pom.
I don't have download access in my organization so the build failed for installtion.
After request i got the resouce jar and clean jar in my desktop(also i can get other necessary jar).
How to make maven to use these jar for the process and how to install the jar in local repository without internet acess.
I downloaded the jar and placed in local repository but it couldn't point the path and use those jars.
please let me know what steps i have follow to run maven install and other commands to build the project without internet access.
where should i placed the jar which i have downloaded by external way.
Please guide me for building and deploying the project.
Thanks in advance.
http://maven.40175.n5.nabble.com/Maven-installation-and-using-in-project-without-Internet-conncetion-tp4564443p4564443.html.
http://www.coderanch.com/t/544641/Jobs-Offered/careers/Maven-installation-project-without-Internet#2471141
I've posted same question in these link
You need an internet connection. Maven isn't initially self-sufficient. It needs to download a bunch of plugins along with their dependencies and the dependencies of your own project. And this really depends on what sort of settings you have for your projects. One set up will require one set of dependencies, another - a whole different one. You can't download artifacts from the Maven Central manually and then install them locally one by one. Simply put, that sounds stupid.
I understand that you're coming from the Ant world where Ant has everything it needs on the local file system. However, Maven relies on the fact that it will have a central repository (either Maven Central, or your own repository - Nexus, Artifactory, etc.) from which to download the plugins and dependencies it needs. There is no point in you migrating to Maven, unless you'll be allowed access to the Central Maven Repository.
Yes, indeed, you can run Maven offline and you can have Maven produce a local repository for you to use when you are in offline mode. However, what you're trying to do is against Maven's principles.
If your company won't allow access to Maven Central, just stick to Ant. Your effort will be a waste of your company's and, ultimately, your own time.
In fact the maven strenght is mainly in the internet accessible repositories and automatic dependency management. But it's possible to use this tool to build your project if you have all dependencies required for your project in your local repository. Then you may use -o option for offline mode and maven will not try to download updated artefact versions.
To get the artifacts into you local repository you have several options:
1) connect to the internet once and mvn build the project (this will download all required dependencies)
2) install dependencies as jar to the local repository manualy (using appropriate mvn command)
I think the questioner is looking for -o or --offline option for mvn. This is a command line option and can be provided while executing.
I think you can setup your repo correctly and execute the mvn goals once when you are connected to internet and use the -o option for later executions .
Hope this helps.
~Abhay
You can configure maven to run in offline mode. Add this entry to your settings.xml
<offline>true</offline>
See here for further information:
http://maven.apache.org/settings.html
Before you can use offline mode, you have to install all necessary third party jars to your local maven repository.
mvn install:install-file
-Dfile=filename.jar
-DgroupId=com.stackoverflow
-DartifactId=artifact
-Dversion=1.0.0
-Dpackaging=jar
-DcreateChecksum=true
-DgeneratePom=true
It's much easier to get those jars in your local repository using an internet connection and online mode.
It's possible to install these resource jars in your local maven repo using install-file. This will make the available to the build. You'll have to do this for each individually, but once that's done you won't have to do anything special.
To be clear, maven puts everything in your local repository, both the jar you're building with this project and the various library jars. Because your system cannot be connected to the internet to maven can populate the local repo with your libraries, you'll have to use this manual approach.
Edit: You should be able to run install-file anywhere. When you do, you'll need to provide the groupId, artifactId, version, and packaging using the command line options. If you already have a POM file for the library, you can provide that instead via -DpomFile=your-pom.xml.
This question has some useful info: How to manually install an artifact in Maven 2?