现象

Exception in thread "main" java.lang.AbstractMethodError: org.springframework.boot.context.config.ConfigFileApplicationListener.supportsSourceType(Ljava/lang/Class;)Z
	at org.springframework.context.event.GenericApplicationListenerAdapter.supportsSourceType(GenericApplicationListenerAdapter.java:79)
	at org.springframework.context.event.AbstractApplicationEventMulticaster.supportsEvent(AbstractApplicationEventMulticaster.java:289)
	at org.springframework.context.event.AbstractApplicationEventMulticaster.retrieveApplicationListeners(AbstractApplicationEventMulticaster.java:221)
	at org.springframework.context.event.AbstractApplicationEventMulticaster.getApplicationListeners(AbstractApplicationEventMulticaster.java:192)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:128)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:122)
	at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:75)
	at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53)
	at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:340)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:304)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1213)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1202)
	at com.huawei.HelloApplication.main(HelloApplication.java:20)

根因：

pom以来引入了

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.6.RELEASE</version>
</parent>

有手动引入:

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>4.3.9.RELEASE</version>
</dependency>

两者导致冲突，所以报错，删除手动转载的解决