maven依赖冲突排除转载

引用一个jar我在包裹后报告了一个错误。

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/WEB_002dINF/views/admin/main_jsp, and the class loader (instance of java/net/URLClassLoader) for the methods defining class, org/apache/jasper/runtime/InstanceManagerFactory, have different Class objects for the type org/apache/tomcat/InstanceManager used in the signature

打印大量时出错，请查找关键字have different Class objects for the type org/apache/tomcat/InstanceManager

有不同的类对象org/apache/tomcat/InstanceManager，加载多个相同的类将会出错，因为maven由此产生的转移依赖

一看是tomcat关于包冲突，打开jar包依赖关系树，查找冲突的包

所选冲突jar包右键exclude maven artifact只要知道具体的包名就可以直接在pom中手动写exclusion

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原始链接：https://blog.csdn.net/qq632680822/article/details/80747704