Springcloud出现：java.lang.IllegalStateException: Failed to load property source from location 'classpa

刚刚入们Springcloud，不出所料遇到很多坑，其中启动的时候出现：java.lang.IllegalStateException: Failed to load property source from location ‘classpath:/application.yml’ 就是一个大坑，如果出现以上情况，一般就是application.yml这个文件中有语法错误。如下是我遇到错误的时候的yml文件内容：

server:
  port: 8761

eureka:
  instance:
    hostname: localhost
  client:
    registerWithEureka: false
    fetchRegistry: false
    serviceUrl:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
      ##通过上面两个false表明自己是一个eureka server
spring:
  application:
    name: eureka-server