To install weblogic application server I decompressed 2 files I got from or oracle using these links:
http://download.oracle.com/otn/nt/middleware/12c/wls/1212/wls12
The answer is on this page which mentions how to install weblogic's maven dependencies in the local repository. For installing them on the remote repository, follow the instructions in this section.
For quick reference, I had to run this command (Please read the comments after the command before running it):
mvn com.oracle.maven:oracle-maven-sync:push -Doracle-maven-sync.oracleHome=%ORACLE_HOME% -Doracle-maven-sync.testingOnly=false
Where -Doracle-maven-sync.oracleHome represents weblogic's installation folder. Its a folder that should hold directories like and not only:
In my question I already ran the plugin mvn com.oracle.maven:oracle-maven-sync:push but I didn't specify the parameters mentioned here.