스프링 에러 log4j:ERROR Could not create the Layout. Reported error follows.java.lang.ClassNotFoundException: org.apache.log4j.PatternLayout 이 에러 때문에 엄청 애먹었네요. 123456789101112131415161718192021package com.popo.controller; import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.spri..

스프링 에러 스프링 프로젝트를 생성하고 셋팅을 하는 과정에서 아래와 같은 에러가 떴다 1234567891011121314151617181920212223242526272829303132333435363738심각: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167) at org.apache.catalina.core.ContainerBase..