The called method's class, javax.servlet.ServletContext, is available from the following locations: jar:file:/data/interface/nero-api-interface-0.0.1.jar!/BOOT-INF/lib/servlet-api-2.3.jar!/javax/servlet/ServletContext.class jar:file:/data/interface/nero-api-interface-0.0.1.jar!/BOOT-INF/lib/tomcat-embed-core-9.0.63.jar!/javax/servlet/ServletContext.class jar:file:/data/interface/nero-api-interface-0.0.1.jar!/BOOT-INF/lib/javax.servlet-api-4.0.1.jar!/javax/servlet/ServletContext.class The called method's class hierarchy was loaded from the following locations: javax.servlet.ServletContext: jar:file:/data/interface/nero-api-interface-0.0.1.jar!/BOOT-INF/lib/servlet-api-2.3.jar!/ 有人遇到这个问题嘛，就是tomcat9.0.x对应的servlet-api版本应该是4版本，但是maven本地一直在用servlet-api-2.3版本的，而且即使我在idea的依赖库删了或者是maven本地仓库删除servlet-api-2.3也没有用，使用mvn dependency:tree也分析不出来，我是在部署API开放平台遇到这个问题。