Tomcat Linux does not log the error troubleshooting

After the investigation, it is found that the log component inside the project is Logback, and slf4j is an implementation way. The valid logs are shown below.

Log4j:warn No Appenders could is found for logger (org.springframework.web.context.ContextLoader). Log4j:warn Initialize the log4j system Properly.log4j:WARN see http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info . Slf4j:class path contains multiple slf4j bindings. Slf4j:found Binding in [jar:file:/home/app/tomcat_m/webapps/root/web-inf/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/ Impl/staticloggerbinder.class]slf4j:found Binding in [jar:file:/home/app/tomcat_m/webapps/root/web-inf/lib/ Logback-classic-1.1.1.jar!/org/slf4j/impl/staticloggerbinder.class]

So, the effective information comes out ah, an excuse corresponds to a number of implementations, the solution so easy, delete the extra jar package.

Slf4j-log4j12-1.6.1.jar

Tomcat Linux does not log the error troubleshooting