Do you know the Maven profile for mvnrepository.com?
Once you've found your jar through mvnrepository.com, hover the "download (JAR)" link, and you'll see the link to the repository which contains your jar (you can probably Right clic and "Copy link URL" to get the URL, what ever your browser is).
Then, you have to add this repository to the repositories used by your project, in your pom.xml :
<project>
...
<repositories>
<repository>
<id>my-alternate-repository</id>
<url>http://myrepo.net/repo</url>
</repository>
</repositories>
...
</project>
EDIT : now MVNrepository.com has evolved : You can find the link to the repository in the "Repositories" section :
License
Categories
HomePage
Date
Files
Repositories
mvnrepository.com isn't a repository. It's a search engine. It might or might not tell you what repository it found stuff in if it's not central; since you didn't post an example, I can't help you read the output.
You can put this configuration in your settings.xml file:
<repository>
<id>mvnrepository</id>
<url>http://repo1.maven.org/maven2</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
<releases>
<enabled>true</enabled>
</releases>
</repository>
Please use this profile
<profiles>
<profile>
<repositories>
<repository>
<id>mvnrepository</id>
<name>mvnrepository</name>
<url>http://www.mvnrepository.com</url>
</repository>
</repositories>
</profile>
</profiles>
<activeProfiles>
<activeProfile>mvnrepository</activeProfile>
</activeProfiles>