ERROR: Invalid class loader hierarchy. You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.

[Tiago Ferreira Ceridorio]

Hi,

I have problems on my plugin because it uses org.adempiere.report.jasper and org.apache.commons.logging but the jar fop-transcoder-allinone-1.1.jar exposes the package org.apache.commons.logging.

Se error above.

GRAVE: java.lang.ExceptionInInitializerError
org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: 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.) (Caused by org.apache.commons.logging.LogConfigurationException: 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.))
        at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
        at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
        at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
        at net.sf.jasperreports.engine.util.JRLoader.<clinit>(JRLoader.java:81)
        at net.sf.jasperreports.engine.JRPropertiesUtil.loadProperties(JRPropertiesUtil.java:102)
        at net.sf.jasperreports.engine.DefaultJasperReportsContext.initProperties(DefaultJasperReportsContext.java:99)
        at net.sf.jasperreports.engine.DefaultJasperReportsContext.<init>(DefaultJasperReportsContext.java:76)
        at net.sf.jasperreports.engine.DefaultJasperReportsContext.<clinit>(DefaultJasperReportsContext.java:59)
        at net.sf.jasperreports.engine.data.JRXmlDataSource.<init>(JRXmlDataSource.java:361)
        at net.sf.jasperreports.engine.data.JRXmlDataSource.<init>(JRXmlDataSource.java:357)
        at org.myapp.sped.nfe.util.NFeUtil.genDANFe(NFeUtil.java:590)
        at org.myapp.sped.nfe.util.NFeEmail.sendMail(NFeEmail.java:125)
        at org.myapp.sped.nfe.model.MNFe.authorizeNFe(MNFe.java:2515)
        at org.myapp.sped.nfe.model.MNFeLot.consultaNFe(MNFeLot.java:360)
        at org.myapp.sped.nfe.process.ProcLotReturn.doIt(ProcLotReturn.java:94)
        at org.compiere.process.SvrProcess.process(SvrProcess.java:198)
        at org.compiere.process.SvrProcess.startProcess(SvrProcess.java:144)
        at org.adempiere.util.ProcessUtil.startJavaProcess(ProcessUtil.java:172)
        at org.compiere.apps.AbstractProcessCtl.startProcess(AbstractProcessCtl.java:466)
        at org.compiere.apps.AbstractProcessCtl.run(AbstractProcessCtl.java:234)
        at org.adempiere.webui.apps.WProcessCtl.process(WProcessCtl.java:197)
        at org.adempiere.webui.apps.AbstractProcessDialog$ProcessDialogRunnable.doRun(AbstractProcessDialog.java:1061)
        at org.adempiere.util.ContextRunnable.run(ContextRunnable.java:38)
        at org.adempiere.webui.apps.DesktopRunnable.run(DesktopRunnable.java:40)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.commons.logging.LogConfigurationException: 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.)
        at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
        at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
        ... 31 more
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.
        at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:385)
        ... 32 more

[Tiago Ferreira Ceridorio]

Hi, 
Any Idea?

[Eduardo JM]

Hi Thiago.

To solve this problem, before you call your method, change the classload from current thread, like this:

ClassLoader cl1 = Thread.currentThread().getContextClassLoader();

        ClassLoader cl2 = JasperReport.class.getClassLoader();

        try {

            if (!cl1.equals(cl2)) {

                Thread.currentThread().setContextClassLoader(cl2);

            }

            

            return MNFeLot.consultaNFe....

        } catch (Exception e) {

            LOGGER.debug("Falha ao gerar o DANFE da Nota Fiscal. Erro: " + e.getMessage());

            LOGGER.error(e);

            throw e;

        } finally {

            if (!cl1.equals(Thread.currentThread().getContextClassLoader())) {

                Thread.currentThread().setContextClassLoader(cl1);

            }

        }