20160421HTTP Status 500 - java.lang.LinkageError loader constraint violation when resolving method o

HTTP Status 500 - java.lang.LinkageError loader constraint violation when resolving method org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager

程序报错：HTTP Status 500 - java.lang.LinkageError loader constraint violation when resolving method org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager(Ljavax/servlet/ServletConfig;)Lorg/apache/tomcat/InstanceManager;” the class loader (instance of org/apache/jasper/servlet/JasperLoader) of the current class, org/apache/jsp/index_jsp, and the class loader (instance of java/net/URLClassLoader) for the method’s defining class, org/apache/jasper/runtime/InstanceManagerFactory, have different Class objects for the type org/apache/tomcat/InstanceManager used in the signature：



我们仔细看报错日志，有句话是这样的：



这里很明显指示我们是jar包冲突的问题，我们去maven的配置文件pom.xml里面指定tomcat这个jar包的scope即可。