topic Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path. in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/detected-both-log4j-over-slf4j-jar-and-slf4j-log4j12-jar-on-the/m-p/178064#M131194 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I am trying "mvn clean install" the "Activiti-5.17-snapshot" under "Spring-boot" archetype, the jar repackaged successfully. </SPAN><BR /><BR /><SPAN>Then "docker build -t &lt;Docker image id&gt; ." successfully. While after running "docker run -p 8082:8082 &lt;Docker image id&gt;", the MVN console thrown: "Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path."</SPAN><BR /><BR /><SPAN>And the POM dependency showed that:</SPAN><BR /><BR /><SPAN>"spring-boot-starter" need log4j-over-slf4j;</SPAN><BR /><SPAN> "Activiti-Explorer" need slf4j-log4j12.jar;</SPAN><BR /><BR /><SPAN>And the "org.activiti.explorer.demo.DemoDataGenerator.java"&nbsp; comes from "Activiti-Explorer".</SPAN><BR /><BR /><SPAN>More Stack trace as following:</SPAN><BR /><BR /><SPAN>org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor': Invocation of init method failed; nested exception is java.lang.ExceptionInInitializerError</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1568)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:540)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:199)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:615)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:465)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:109)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.boot.SpringApplication.run(SpringApplication.java:321)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.boot.SpringApplication.run(SpringApplication.java:961)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.boot.SpringApplication.run(SpringApplication.java:950)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at com.rushucloud.eip.Application.main(Application.java:49)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at java.lang.reflect.Method.invoke(Method.java:483)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:53)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at java.lang.Thread.run(Thread.java:745)</SPAN><BR /><SPAN>Caused by: java.lang.ExceptionInInitializerError: null</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.apache.log4j.Logger.getLogger(Logger.java:40)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.jboss.logging.Log4jLogger.&lt;init&gt;(Log4jLogger.java:31)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.jboss.logging.Log4jLoggerProvider.getLogger(Log4jLoggerProvider.java:29)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.jboss.logging.LoggerProviders.find(LoggerProviders.java:33)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.jboss.logging.LoggerProviders.&lt;clinit&gt;(LoggerProviders.java:28)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.jboss.logging.Logger.getLogger(Logger.java:2163)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.jboss.logging.Logger$1.run(Logger.java:2263)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at java.security.AccessController.doPrivileged(Native Method)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.jboss.logging.Logger.getMessageLogger(Logger.java:2227)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.jboss.logging.Logger.getMessageLogger(Logger.java:2214)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.hibernate.validator.internal.util.logging.LoggerFactory.make(LoggerFactory.java:29)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.hibernate.validator.internal.util.Version.&lt;clinit&gt;(Version.java:27)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.hibernate.validator.internal.engine.ConfigurationImpl.&lt;clinit&gt;(ConfigurationImpl.java:66)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:41)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:276)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.validation.beanvalidation.LocalValidatorFactoryBean.afterPropertiesSet(LocalValidatorFactoryBean.java:223)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$Jsr303ValidatorFactory.run(ConfigurationPropertiesBindingPostProcessor.java:362)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.afterPropertiesSet(ConfigurationPropertiesBindingPostProcessor.java:174)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1627)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1564)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;… 21 common frames omitted</SPAN><BR /><SPAN>Caused by: java.lang.IllegalStateException: Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path, preempting StackOverflowError. See also </SPAN><A href="http://www.slf4j.org/codes.html#log4jDelegationLoop" rel="nofollow noopener noreferrer">http://www.slf4j.org/codes.html#log4jDelegationLoop</A><SPAN> for more details.</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;at org.apache.log4j.Log4jLoggerFactory.&lt;clinit&gt;(Log4jLoggerFactory.java:51)</SPAN><BR /><SPAN>&nbsp;&nbsp;&nbsp;… 41 common frames omitted</SPAN><BR /><BR /><SPAN>Any idea?</SPAN><BR /><BR /><SPAN>Thanks,</SPAN><BR /><SPAN>Yangbo</SPAN></BODY></HTML> Sun, 04 Jan 2015 05:31:40 GMT smartkit 2015-01-04T05:31:40Z Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path. https://connect.hyland.com/t5/alfresco-archive/detected-both-log4j-over-slf4j-jar-and-slf4j-log4j12-jar-on-the/m-p/178064#M131194 Hi,I am trying "mvn clean install" the "Activiti-5.17-snapshot" under "Spring-boot" archetype, the jar repackaged successfully. Then "docker build -t &lt;Docker image id&gt; ." successfully. While after running "docker run -p 8082:8082 &lt;Docker image id&gt;", the MVN console thrown: "Detected both Sun, 04 Jan 2015 05:31:40 GMT https://connect.hyland.com/t5/alfresco-archive/detected-both-log4j-over-slf4j-jar-and-slf4j-log4j12-jar-on-the/m-p/178064#M131194 smartkit 2015-01-04T05:31:40Z Re: Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path. https://connect.hyland.com/t5/alfresco-archive/detected-both-log4j-over-slf4j-jar-and-slf4j-log4j12-jar-on-the/m-p/178065#M131195 <HTML><HEAD></HEAD><BODY><SPAN>Well, upgrade the Spring-boot version from 1.20.RC1 to 1.20.RC2 ,this issue go away.</SPAN></BODY></HTML> Sun, 04 Jan 2015 14:09:29 GMT https://connect.hyland.com/t5/alfresco-archive/detected-both-log4j-over-slf4j-jar-and-slf4j-log4j12-jar-on-the/m-p/178065#M131195 smartkit 2015-01-04T14:09:29Z