在我爲項目設定 parent pom的時候遇上了一個問題，
APPLICATION FAILED TO START
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Description:
An attempt was made to call a method that does not exist. The attempt was made from the following location:
org.apache.catalina.authenticator.AuthenticatorBase.startInternal(AuthenticatorBase.java:1178)
The following method did not exist:
javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;
The method's class, javax.servlet.ServletContext, is available from the following locations:
jar:file:/Users/12dong/.m2/repository/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar!/javax/servlet/ServletContext.class
jar:file:/Users/12dong/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.17/tomcat-embed-core-9.0.17.jar!/javax/servlet/ServletContext.class
It was loaded from the following location:
file:/Users/12dong/.m2/repository/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar
Action:
Correct the classpath of your application so that it contains a single, compatible version of javax.servlet.ServletContext
從description可以看出我的項目關於servlet-api的引用又有兩處用到了，只要把我顯式引用的pom dependency刪除就好了。
但不知道爲什麼如果僅僅把parent pom 改爲idea 默認的springboot-pom可以使用，但是換成我自己創建的parent pom就不能使用了，即使我自己創建的parent pom 的 parent pom 也是idea 默認的springboot-pom。