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log problem

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Post time: 2020-2-9 20:00:01
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In my hibernate project,
Exception: log4j: WARN No appenders could be found for logger (org.apache.catalina.startup.Embedded).
log4j: WARN Please initialize the log4j system properly.
log4j: WARN No appenders could be found for logger (org.apache.commons.beanutils.ConvertUtils).
log4j: WARN Please initialize the log4j system properly.
log4j: WARN No appenders could be found for logger (org.apache.commons.digester.Digester).
log4j: WARN Please initialize the log4j system properly.

What causes it? How to deal with it? Thank you
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Post time: 2020-4-5 21:30:01
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It may be that the configuration file is missing.
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Post time: 2020-4-6 13:30:02
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Cannot find the configuration file, it may be the wrong path
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 Author| Post time: 2020-4-10 17:00:01
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Which configuration file? The project can run, but it is these warnings
log4j: WARN No appenders could be found for logger (org.apache.catalina.startup.Embedded).
log4j: WARN Please initialize the log4j system properly.
log4j: WARN No appenders could be found for logger (org.apache.commons.beanutils.ConvertUtils).
log4j: WARN Please initialize the log4j system properly.
log4j: WARN No appenders could be found for logger (org.apache.commons.digester.Digester).
log4j: WARN Please initialize the log4j system properly.

Please be specific, I am a novice
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Post time: 2020-4-11 09:00:02
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Because you use tomcat struts, and the printed classes are all used in tomcat / struts, they all use the commons-logging lib, commons-logging find log4j in the classpath, use log4j But your log4j didn't configure corresponding appenders for them, so it will alarm. Can be ignored
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Post time: 2020-4-11 12:00:01
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It should be a path problem
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Post time: 2020-4-12 08:30:01
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tellyoumade it very clear
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 Author| Post time: 2020-4-12 22:00:02
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I probably understand what it means. Where can I configure log4j appender?
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