我使用zuul向服务接口发起请求时，耗时有点长，就出现以下错误：
com.netflix.zuul.exception.ZuulException: Forwarding error
Caused by: com.netflix.hystrix.exception.HystrixRuntimeException: transaction timed-out and no fallback available.
Caused by: java.util.concurrent.TimeoutException: null
解决方法：
在application.xml中添加即可成功解决：
ribbon:
ReadTimeout: 60000
ConnectTimeout: 60000
eureka:
enabled: true
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 60000
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