maven - where to store external jar files if needed

Question

What is the convention to store jar files inside maven project? I know that I should download jars using maven itself, but this time the case is different. I'm doing a course (coursera.org) and I've got somewhat secret jar file which I'm supposed to use and it's not public - I won't download it with maven. And I do want to store the .jar file in my private repo (bitbucket). The question is just where should I put the file, so that maven project will be able to use this jar.

Answer 1

You need to add it to local repository. And then use it as any other jar.

You do it like this:

mvn install:install-file -Dfile={filename}.jar -DgroupId={some.group.id} 
-DartifactId={artifact} -Dversion={version} -Dpackaging=jar

Then you use it like this:

<dependency>
      <groupId>{some.group.id}</groupId>
      <artifactId>{artifact} </artifactId>
      <version>{version}</version>
 </dependency>

Answer 2

Here is another simple way to do this: Create a file based maven repo inside the project directory

Pros: - Anyone can checkout the project and do a maven compile - No need to install a repository manager

Cons: - The jar will be in project directory

How to do this? I am including ojdbc6.jar in a project.

Step 1: Copy the ojdbc6.jar to ${project.baseDir}/lib/com/oracle/driver/ojdbc6/SNAPSHOT/ojdbc6-SNAPSHOT.jar

Step 2: Add the dependency in your pom

<dependency>
    <groupId>com.oracle.driver</groupId>
    <artifactId>ojdbc6</artifactId>
    <version>SNAPSHOT</version>
</dependency>

Step 3: Add this to your pom. Here we are asking maven to consider the lib directory inside your project dir as a maven repo.

<repositories>
    <repository>
        <id>my-repo</id>
        <name>mycustom repo</name>
        <url>file:${project.basedir}/lib</url>
     </repository>
</repositories>

Step 4: Analyse the path of the jar file in step 2. ${project.baseDir}/lib/com/oracle/driver/ojdbc6/SNAPSHOT/ojdbc6-SNAPSHOT.jar

• com/oracle/driver/ -- groupId (must be 3 components)
• ojdbc6/ -- artifactId
• SNAPSHOT/ -- verison

We have stored the jar, very similar to how maven stores in a repo.

Answer 3

最好的办法是安装一个 Artifactory，Nexus，Archiva之类的存储库管理器，并将此类文件存储到存储库管理器中，并像往常一样使用它们。