java.sql.SQLException: Unable to instantiate logger class 'com.mysql.jdbc.log.Log4JLogger', exception in constructor?

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Root Cause Analysis

  1. java.sql.SQLException

    Unable to instantiate logger class 'com.mysql.jdbc.log.Log4JLogger', exception in constructor?

    at com.mysql.jdbc.log.LogFactory.getLogger()
  2. MySQL jdbc
    NonRegisteringDriver.connect
    1. com.mysql.jdbc.log.LogFactory.getLogger(LogFactory.java:85)
    2. com.mysql.jdbc.Connection.initializeDriverProperties(Connection.java:3619)
    3. com.mysql.jdbc.Connection.<init>(Connection.java:1471)
    4. com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:264)
    4 frames