spring cloud如何修复zuul跨域配置异常的问题

前言

本文主要给大家介绍一下在 zuul进行跨域配置的时候出现异常该如何解决的方法，分享出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧。

异常

1	`The 'Access-Control-Allow-Origin' header contains multiple values ', ', but only one is allowed`

实例

									Access-Control-Allow-Credentials:true

									Access-Control-Allow-Credentials:true

									Access-Control-Allow-Origin:http://localhost:3000

									Access-Control-Allow-Origin:http://localhost:3000

									Cache-Control:no-cache, no-store, max-age=0, must-revalidate

									Content-Type:application/json;charset=UTF-8

									Date:Thu, 11 Aug 2016 14:23:09 GMT

									Expires:0

									Pragma:no-cache

									Transfer-Encoding:chunked

									Vary:Origin

									Vary:Origin

									X-Application-Context:shipping-service:dev:8080

									X-Content-Type-Options:nosniff

									X-Frame-Options:DENY

									X-XSS-Protection:1; mode=block

方案

多次请求的时候，会把这些header再带过来，然后请求zuul转发的接口又在写入一次，造成重复了，方案就是zuul转发的时候，过滤掉这些header，比如

									zuul:

									 sslHostnameValidationEnabled: false

									 routes:

									 info:

									  sensitiveHeaders: Access-Control-Allow-Origin,Access-Control-Allow-Methods

									  path: /share/**

									  url: http://192.168.99.100:9000/