org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException) (Caused by org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException))

mkyong.com | 3 months ago
  1. 0

    ClassNotFoundException: org.apache.commons.logging.LogFactory

    mkyong.com | 1 hour ago
    org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException) (Caused by org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException))
  2. 0

    ClassNotFoundException: org.apache.commons.logging.LogFactory

    mkyong.com | 3 months ago
    org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException) (Caused by org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException))
  3. 0

    log4j/class loading problem

    Google Groups | 8 years ago | Katarina Hallberg
    org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.)
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  5. 0

    Re: Log4j logging doesn't work when a web application is moved outside Tomcat/webapps directory

    apache.org | 1 year ago
    org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.)
  6. 0

    Getting exception in initializing log4j files

    Stack Overflow | 5 years ago | cpandey05
    org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException) (Caused by org.apache.commons.logging.LogConfigurationException: java.lang.NullPointerException (Caused by java.lang.NullPointerException))

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    Root Cause Analysis

    1. org.apache.commons.logging.LogConfigurationException

      java.lang.NullPointerException (Caused by java.lang.NullPointerException)

      at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor()
    2. Apache Commons Logging
      LogFactoryImpl.newInstance
      1. org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
      2. org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
      2 frames