java - How do I download a jar using maven programatically -


i writing application requires me download jar given mavens groupid/artifactid/version.

i start with

public model pomtomodel(string pomurl) throws exception { url url = new url(pomurl);     inputstream stream = url.openstream();     try {         model model = new mavenxpp3reader().read(stream);         return model;     } {         stream.close();     } }

so given url of pom, have maven model object representing it. seems work well.

what know 2 things:

  1. find url of jar artifact model represents in maven repository maven plugin use
  2. given model, find file representing jar in local repository

i have poor quality solutions: go mvnrepository.com manually coding url, , use ~/.m2/repository prefix file. can improve solution, end poorly duplicating code tested , used in maven code base.

i'd know how using maven classes.

i have done fair bit of google searching, amusing thing searching maven , jars (even on stackoverflow) find lots of solutions how use maven, rather how code using maven classes.

thanks help

option 1

aether recommended khmarbaise.

it's native library ships maven 3.0

option 2

if want simple solution downloading maven modules command line or within shell script, apache ivy has standalone jar.

example:

using ivy dependencies manager programmatically

option 3

if you're looking maven jar , don't care dependency management it's simpler.

here's how retrieve log4j jar direct maven central:

curl -o http://search.maven.org/remotecontent?filepath=log4j/log4j/1.2.17/log4j-1.2.17.jar

if you're using nexus repository manager has useful rest api

using nexus rest api latest artifact version given groupid/artifactid


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