After many attempts I can't print the log to a file. - Result on STDOUT: <3-mar-2014 13.10.53 CET> <Notice> <WebLogicServer> <BEA-000360> <Server started in RUNNING mode> 0 [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] WARN it.isp.swa.ProfiloSWA - I love programming. 0 [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] ERROR it.isp.swa.ProfiloSWA - I am programming. The file MyLog.log is still not written. - This is what I've done: ****************************ListMan.ear | -\META-INF | - weblogic-application.xml - logback.xml - ConsoleAmministr.war | - \WEB-INF | weblogic.xml logback.xml | - \lib | - logback-classic-1.1.1.jar - logback-core-1.1.1.jar - slf4j-api-1.7.6.jar - \classes | logback.xml - \it | - foo.java - \resource | - logback.xml***********************************************************logback.xml: <?xml version="1.0" encoding="UTF-8"?><configuration> <appender name="FILE" class="ch.qos.logback.core.FileAppender"><file>MyLog.log</file> <encoder> <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern> </encoder> </appender> <logger name="it" level="TRACE"/> <root level="debug"> <appender-ref ref="FILE" /> </root></configuration>***********************************************************foo.java:...import org.slf4j.Logger;import org.slf4j.LoggerFactory;... static final Logger LOG = LoggerFactory.getLogger(foo.class);... LOG.info("I am fine."); LOG.warn("I love programming."); LOG.error("I am programming.");...***********************************************************weblogic.xml: <?xml version="1.0" encoding="UTF-8"?><weblogic-web-app xmlns="http://xmlns.oracle.com/weblogic/weblogic-web-app" xmlns:j2ee="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd http://xmlns.oracle.com/weblogic/weblogic-web-app http://xmlns.oracle.com/weblogic/weblogic-web-app/1.2/weblogic-web-app.xsd"> <jsp-descriptor> <keepgenerated>true</keepgenerated> </jsp-descriptor> <context-root>/ConsoleAmministr</context-root> <weblogic-version>10.3.5</weblogic-version> <container-descriptor> <prefer-application-packages> <package-name>org.slf4j</package-name> </prefer-application-packages> </container-descriptor></weblogic-web-app>***********************************************************weblogic-application.xml: <?xml version="1.0" encoding="UTF-8"?><weblogic-application xmlns="http://www.bea.com/ns/weblogic/90"> <prefer-application-packages> <package-name>org.slf4j.*</package-name> <package-name>antlr.*</package-name> </prefer-application-packages> <prefer-application-resources> <resource-name>org/slf4j/impl/StaticLoggerBinder.class</resource-name> </prefer-application-resources> </weblogic-application>***********************************************************