在自学SpringCloud全家桶中的Feign的时候踩的坑，启动的时候报如下错误:

org.springframework.beans.factory.BeanCreationNotAllowedException: Error creating bean with name ‘eurekaAutoServiceRegistration’: Singleton bean creation not allowed while singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!)

在网上百度了也发现导致这个error的情况有很多中，特别记录下给大家参考参考。
先贴上我的pom文件中依赖的jar包，因为我的问题就出现在这:

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-tomcat</artifactId>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-openfeign</artifactId>
		</dependency>
	</dependencies>

解决这个error的错误只需要把

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-tomcat</artifactId>
			<scope>provided</scope>
		</dependency>

这个依赖删除即可，因为springboot内嵌web容器是tomcat，没必要重新引入tomcat的jar包,当然这只是导致这种error错误的原因之一！