guava jar 包冲突：java.lang.NoSuchMethodError: com.google.common.base.Platform.systemNanoTime()J-蒲公英云

guava jar 包冲突：java.lang.NoSuchMethodError: com.google.common.base.Platform.systemNanoTime()J

zuul 里面会引入 guava 的jar 包，默认版本是18

业务系统A中又引入了一个三方包，三方包中也引入guava 的jar 包，版本是比18更低的版本

现在的问题在于，业务系统A 中通过zuul 路由的时候，引用了 guava 的一个低版本，导致高版本中的方法调用不到，提示：

NoSuchMethodFound

- Exception encountered during context initialization - cancelling refresh attempt: 
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with 
name 'ribbonLoadBalancingHttpClient' defined in 
org.springframework.cloud.netflix.ribbon
.RibbonClientConfiguration$HttpClientRibbonConfiguration: 
Unsatisfied dependency expressed through method 'ribbonLoadBalancingHttpClient' parameter 
2; nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'ribbonLoadBalancer' defined in 
org.springframework.cloud.netflix.ribbon.RibbonClientConfiguration: 
Bean instantiation via factory method failed; nested exception is 
org.springframework.beans.BeanInstantiationException: Failed to instantiate 
[com.netflix.loadbalancer.ILoadBalancer]: 
Factory method 'ribbonLoadBalancer' threw exception; 
nested exception is java.lang.NoSuchMethodError: com.google.common.base.Platform.systemNanoTime()J