Spring Boot: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean

Question

I am totally new to Spring and started to do the official guides from this site: https://spring.io/guides

I'd like to do this guide: https://spring.io/guides/gs/scheduling-tasks/

I get the following Exception:

2014-02-14 16:25:21.614  INFO 9032 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.scheduling.annotation.SchedulingConfiguration' of type [class org.springframework.scheduling.annotation.SchedulingConfiguration$$EnhancerByCGLIB$$5b48d763] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2014-02-14 16:25:21.638  INFO 9032 --- [           main] .c.l.ClasspathLoggingApplicationListener : Application failed to start with classpath: [file:/C:/work/Spring/SpringTutorial/target/classes/, file:/C:/work/apache-maven-3.0.3/repo/javax/servlet/javax.servlet-api/3.0.1/javax.servlet-api-3.0.1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-starter/1.0.0.RC1/spring-boot-starter-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot/1.0.0.RC1/spring-boot-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-core/4.0.0.RELEASE/spring-core-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-context/4.0.0.RELEASE/spring-context-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-autoconfigure/1.0.0.RC1/spring-boot-autoconfigure-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-starter-logging/1.0.0.RC1/spring-boot-starter-logging-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/slf4j/jcl-over-slf4j/1.7.5/jcl-over-slf4j-1.7.5.jar, file:/C:/work/apache-maven-3.0.3/repo/org/slf4j/slf4j-api/1.7.5/slf4j-api-1.7.5.jar, file:/C:/work/apache-maven-3.0.3/repo/org/slf4j/jul-to-slf4j/1.7.5/jul-to-slf4j-1.7.5.jar, file:/C:/work/apache-maven-3.0.3/repo/org/slf4j/log4j-over-slf4j/1.7.5/log4j-over-slf4j-1.7.5.jar, file:/C:/work/apache-maven-3.0.3/repo/ch/qos/logback/logback-classic/1.0.13/logback-classic-1.0.13.jar, file:/C:/work/apache-maven-3.0.3/repo/ch/qos/logback/logback-core/1.0.13/logback-core-1.0.13.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-starter-web/1.0.0.RC1/spring-boot-starter-web-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-starter-tomcat/1.0.0.RC1/spring-boot-starter-tomcat-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/apache/tomcat/embed/tomcat-embed-core/7.0.47/tomcat-embed-core-7.0.47.jar, file:/C:/work/apache-maven-3.0.3/repo/org/apache/tomcat/embed/tomcat-embed-logging-juli/7.0.47/tomcat-embed-logging-juli-7.0.47.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-web/4.0.0.RELEASE/spring-web-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/aopalliance/aopalliance/1.0/aopalliance-1.0.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-aop/4.0.0.RELEASE/spring-aop-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-beans/4.0.0.RELEASE/spring-beans-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-webmvc/4.0.0.RELEASE/spring-webmvc-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-expression/4.0.0.RELEASE/spring-expression-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/com/fasterxml/jackson/core/jackson-databind/2.3.1/jackson-databind-2.3.1.jar, file:/C:/work/apache-maven-3.0.3/repo/com/fasterxml/jackson/core/jackson-annotations/2.3.0/jackson-annotations-2.3.0.jar, file:/C:/work/apache-maven-3.0.3/repo/com/fasterxml/jackson/core/jackson-core/2.3.1/jackson-core-2.3.1.jar, file:/C:/work/apache-maven-3.0.3/repo/commons-lang/commons-lang/2.2/commons-lang-2.2.jar]
Exception in thread "main" 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:140)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:476)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:124)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:658)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:355)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:920)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:909)
    at hu.kumite.Application.main(Application.java:17)
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:190)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:163)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137)
    ... 7 more

The application starter class is this:

@ComponentScan
@EnableAutoConfiguration
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(ScheduledTasks.class, args);
    }
}

As you can see, the main method contains a commented line. I've already done a tutorial, namely this one: https://spring.io/guides/gs/consuming-rest/ It's up and running. But I can't run the ScheduledTasks app, which is the following:

@EnableScheduling
public class ScheduledTasks {

    private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");

    @Scheduled(fixedRate = 5000)
    public void reportCurrentTime() {
        System.out.println("The time is now " + dateFormat.format(new Date()));
    }
}

I use Eclipse and run the Application.java's main as an Application. Could someone please help me?

Answer 1

The scheduling guide isn't a web app so you probably have some mouldy stuff in your pom.xml from the REST guide? If you follow the instructions closely it should work. Another potential issue with the code you posted above is that your @EnableAutoConfiguration class is not used in the context, only as a main method (which may not be a problem for the scheduling guide but it probably is for a bunch of others).