Failed to start bean 'eurekaAutoServiceRegistration'; nested exception is java.lang.NullPointerException

org.springframework.context.ApplicationContextException: Failed to start bean 'eurekaAutoServiceRegistration'; 
nested exception is java.lang.NullPointerException

引入spring-cloud-starter-netflix-eureka-client和spring-boot-starter-web两个依赖的时候，会出现冲突。由于代码里面用了Spring MVC的Rest方式，而没有用spring-cloud-starter-netflix-eureka-client本身包含Jesery Rest方式。而导致报错

解决方法：
在spring-cloud-starter-netflix-eureka-client排出Jersey

如下：

<dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
   <!-- 排除Jersey，用SpringMVC Rest方式-->
   <exclusions>
       <exclusion>
           <groupId>com.sun.jersey</groupId>
           <artifactId>jersey-client</artifactId>
       </exclusion>
       <exclusion>
           <groupId>com.sun.jersey</groupId>
           <artifactId>jersey-core</artifactId>
       </exclusion>
       <exclusion>
           <groupId>com.sun.jersey.contribs</groupId>
           <artifactId>jersey-apache-client4</artifactId>
       </exclusion>
   </exclusions>
</dependency>