Avvio a molla - java.lang.ClassNotFoundException: javax.servlet.ServletContext e Impossibile avviare EmbeddedWebApplicationContext

Question

Ho un'applicazione di avvio a molla (grails 3.1.8), ma quando eseguo l'applicazione in intellij viene visualizzato il seguente errore:

Caused by: java.lang.IllegalStateException: Failed to introspect annotated methods on class org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport 
    at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:163) 
    at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:292) 
    at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:232) 
    at org.springframework.context.annotation.ConfigurationClassParser.processImports(ConfigurationClassParser.java:510) 
    ... 26 common frames omitted 
Caused by: java.lang.NoClassDefFoundError: javax/servlet/ServletContext 
    at java.lang.Class.getDeclaredMethods0(Native Method) 
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) 
    at java.lang.Class.getDeclaredMethods(Class.java:1975) 
    at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:152) 
    ... 29 common frames omitted 
Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContext 
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) 
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
    ... 33 common frames omitted 

ho provato ad aggiungere javax-servlet-api dipendenza come suggerito in Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: javax/servlet/ServletContext

Ma poi ho cominciato a ricevere:

ERROR org.springframework.boot.SpringApplication - Application startup failed 
org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean. 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) 
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766) 
    at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361) 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) 
    at grails.boot.GrailsApp.run(GrailsApp.groovy:55) 
    at grails.boot.GrailsApp.run(GrailsApp.groovy:374) 
    at grails.boot.GrailsApp.run(GrailsApp.groovy:363) 
    at grails.boot.GrailsApp$run.call(Unknown Source) 
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48) 
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113) 
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:133) 
    at closemytab.Application.main(Application.groovy:13) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:497) 
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) 
Caused by: org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean. 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.getEmbeddedServletContainerFactory(EmbeddedWebApplicationContext.java:185) 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:158) 
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130) 
    ... 18 common frames omitted 

Questo post suggerisce quindi di rimuovere javax-servlet-api: Spring boot -- Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean

Ma poi affronto il problema originale.

Qualche idea?

Answer 1

Il problema era con il build.gradle

provided "org.springframework.boot:spring-boot-starter-tomcat" 

Intellij non era contento del previsto

appena ho passato a

compile "org.springframework.boot:spring-boot-starter-tomcat" 

l'applicazione ha funzionato