擼了今年阿里、頭條和美團(tuán)的面試，我有一個(gè)重要發(fā)現(xiàn).......>>>

發(fā)布Spring Cloud Zuul的時(shí)候，前端遇到如下錯(cuò)誤：?
The ‘Access-Control-Allow-Origin’ header contains multiple values ‘, ‘, but only one is allowed.?
Origin ‘http://XXXX’ is therefore not allowed access.

參照：https://github.com/spring-cloud/spring-cloud-netflix/issues/1250

在zuul的bootstrap.properties文件中添加：
?

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

https://stackoverflow.com/questions/36042862/zuul-proxy-cors-header-contains-multiple-values-headers-repeated-twice-java-s/51419301#51419301

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