How maven import sql server driver (jar package)

1. Select the File option, then click the Project Structure;

2. Modules and then select Options, then click the + sign on the right;
3. Finally, select Library-> java, can be introduced.

Note, do not forget to add a dependency in pom.xml file:

            <dependency>
              <groupId>com.microsoft.sqlserver</groupId>
              <artifactId>sqljdbc4</artifactId>
              <version>4.0</version>
            </dependency>