导致错误的原因是因为使用@FeignClient注解的前提需要增加依赖
引入
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
紧接着又报java.lang.ClassNotFoundException: com.netflix.config.CachedDynamicIntPropert
引入
<dependency>
<groupId>com.netflix.archaius</groupId>
<artifactId>archaius-core</artifactId>
<version>0.7.6</version>
</dependency>