zuul跨域配置报错分析

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ajax请求报错：

The 'Access-Control-Allow-Origin' header contains multiple values '', but ..

场景：

通过chrome network查看response header中存在多项重复内容

 Access-Control-Allow-Credentials: true,true Access-Control-Allow-Headers: authorization, from Access-Control-Allow-Methods: GET Access-Control-Allow-Origin: http://192.168.85.180,http://192.168.85.180 Date: Thu, 30 May 2019 05:23:47 GMT Transfer-Encoding: chunked Vary: Origin, Access-Control-Request-Method, Access-Control-Request-Headers, Origin, Access-Control-Request-Method, Access-Control-Request-Headers

处理方法：

 zuul.ignored-headers=Access-Control-Allow-Credentials,Access-Control-Allow-Origin,Vary 

忽略标注的请求头，避免重复转发造成请求头异常，导致跨域错误

文章来源: https://blog.csdn.net/programmeryu/article/details/91605915