Maven: How to include jars in Eclipse, which are not available in repository?

Question

I have copied the JARs into src\\main\\webapp\\WEB-INF\\lib.
I use eclipse. If I add the jars one-by-one to Project-> Java Build Path-> Add jars, then I do

Answer 1

There are atleast three approaches in which 3rd party JARs can be added to Maven projects.

1. Install manually using mvn install command
2. Adding the location of jar file in pom dependency with the the following tag system
3. Creating a 'dummy' maven repository pointing to jar location.

While approach 1 and 2 has been suggested above, I will focus on third approach which I find more cleaner and does not require any mvn command and works out of box from any IDE.

Step 1: Add the location of local 'dummy' repository in pom.xml

    
        repo
        repo
        file:${project.basedir}/src/main/resources/lib
    

Here the 'dummy' repository location is the 'lib' folder of my project directory

Step 2 : Add the jar dependency into your pom.xml

    
        com.cloudera.impala
        impala-frontend
        0.1-SNAPSHOT
    

choose any groupId but make sure that artifactId and version is of the format -.jar ( Name of 3rd party jar)

Step 3 : Create the folder structure as per the groupId,artifactId and version mentioned in the Step 2 in your local 'dummy' repository. So in this case the folder struction would be /src/main/resources/lib/com/cloudera/impala/impala-frontend/0.1-SNAPSHOT/

Place your jar in the version folder and build your project. You will get the following output which treats your 'dummy' repository to be the provider of your 3rd party jar.

[INFO] Downloading from repo: file:C:\Users\skumar\eclipse-workspace\chdQueryBuilder/src/main/resources/lib/com/cloudera/impala/impala-frontend/0.1-SNAPSHOT/maven-metadata.xml
[INFO] Downloading from repo: file:C:\Users\skumar\eclipse-workspace\chdQueryBuilder/src/main/resources/lib/com/cloudera/impala/impala-frontend/0.1-SNAPSHOT/impala-frontend-0.1-SNAPSHOT.pom
[WARNING] The POM for com.cloudera.impala:impala-frontend:jar:0.1-SNAPSHOT is missing, no dependency information available
[INFO] Downloading from repo: file:C:\Users\skumar\eclipse-workspace\chdQueryBuilder/src/main/resources/lib/com/cloudera/impala/impala-frontend/0.1-SNAPSHOT/impala-frontend-0.1-SNAPSHOT.jar
[WARNING] Could not validate integrity of download from file:C:\Users\skumar\eclipse-workspace\chdQueryBuilder/src/main/resources/lib/com/cloudera/impala/impala-frontend/0.1-SNAPSHOT/impala-frontend-0.1-SNAPSHOT.jar: Checksum validation failed, no checksums available
[WARNING] Checksum validation failed, no checksums available from repo for file:C:\Users\skumar\eclipse-workspace\chdQueryBuilder/src/main/resources/lib/com/cloudera/impala/impala-frontend/0.1-SNAPSHOT/impala-frontend-0.1-SNAPSHOT.jar
[INFO] Downloaded from repo: file:C:\Users\skumar\eclipse-workspace\chdQueryBuilder/src/main/resources/lib/com/cloudera/impala/impala-frontend/0.1-SNAPSHOT/impala-frontend-0.1-SNAPSHOT.jar (7.0 MB at 79 MB/s)
[INFO]