将 Pentaho 连接到 mysql 数据库（本地主机）

Question

I download last version of MySQL jdbc connector (mysql-connector-java-8.0.13) and I put it in the following folders:

• C:\\Users\\maria\\Desktop\\report-designer\\report-designer\\lib and
• C:\\Users\\maria\\Desktop\\report-designer\\report-designer\\lib\\jdbc

And it shows me the following error:

    Driver class 'org.gjt.mm.mysql.Driver' could not be found, make sure the 'MySQL' driver (jar file) is installed.
    org.gjt.mm.mysql.Driver


    org.pentaho.di.core.exception.KettleDatabaseException: 
    Error occurred while trying to connect to the database

While, when I introduced the old version file (mysql-connector-java-5.1.34-bin) at the same folders as said before (above). Pentaho shows me the following error:

    Error connecting to database: (using class org.gjt.mm.mysql.Driver)
    Could not create connection to database server.

    org.pentaho.di.core.exception.KettleDatabaseException: 
    Error occurred while trying to connect to the database

can someone help me?

Thank you!

Answer 1

Finally I manage to solve the error.

I put my jdbc connector (mysql-connector-java-8.0.13) into the following folder:

• C:\\Users\\maria\\Desktop\\report-designer\\report-designer\\lib an

And I change the name of my MySQL DB.

Thank you

Answer 2

• Stop Report Designer
• Remove it from the 'C:\\Users\\maria\\Desktop\\report-designer\\report-designer\\lib\\jdbc' directory
• Restart Report designer

You can only have one jdbc driver in the lib directory for the db. So when you add the 5.1.34 driver, you are adding a second MySQL driver, causing that second error.