(I'm not sure if everybody saw this message, so I'm reposting it. Sorry for
the inconvenience)
Hello all,
I'm a begginner with Servlets, Tomcat and stuff, so, please, don't
laff on me ! :)
Scene: I installed Tomcat 5, J2SDK 1.4.2 and MySQL 4.0.13 on a Win2k
Professional.
While trying some servlets to authenticate users, i get this error
again and again ...
SEVERE: Exception invoking periodic operation:
org.apache.commons.logging.LogConfigurationException:
org.apache.commons.logging.LogConfigurationExc
eption: java.lang.IncompatibleClassChangeError:
org.apache.commons.logging.impl.SimpleLog
at
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.ja
va:532)
at
org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.ja
va:272)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:414)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:3849)
at
org.apache.catalina.core.StandardContext.reload(StandardContext.java:2728)
at
org.apache.catalina.core.StandardContext.backgroundProcess(StandardContext.j
ava:4375)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(Conta inerBase.java:1654)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(Conta
inerBase.java:1663)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(Conta
inerBase.java:1663)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(Cont
ainerBase.java:1643)
at java.lang.Thread.run(Thread.java:534)
Caused by: org.apache.commons.logging.LogConfigurationException:
java.lang.IncompatibleClassChangeError:
org.apache.commons.logging.impl.SimpleLog
at
org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryI
mpl.java:416)
at
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.ja
va:525)
... 10 more
Caused by: java.lang.IncompatibleClassChangeError:
org.apache.commons.logging.impl.SimpleLog
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1265)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1225)
at
org.apache.commons.logging.impl.LogFactoryImpl$1.run(LogFactoryImpl.java:460
)
at java.security.AccessController.doPrivileged(Native Method)
at
org.apache.commons.logging.impl.LogFactoryImpl.loadClass(LogFactoryImpl.java
:454)
at
org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryI
mpl.java:406)
... 11 more
Could anyone help me ?
Thanks in advance,
---
Fabio Moraes
[EMAIL PROTECTED]
System Engineer
Work Force Management System
+55 21 3088 9548
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