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1.Access-Control-Allow-Origin 指定格式
The Origin header field has the following syntax: origin = "Origin:" OWS origin-list-or-null OWS origin-list-or-null = %x6E %x75 %x6C %x6C / origin-list origin-list = serialized-origin *( SP serialized-origin ) serialized-origin = scheme "://" host [ ":" port ] ; <scheme>, <host>, <port> from RFC 3986
origin = "Origin:" OWS origin-list-or-null OWS
origin-list-or-null = %x6E %x75 %x6C %x6C / origin-list
origin-list = serialized-origin *( SP serialized-origin )
serialized-origin = scheme "://" host [ ":" port ]
相关资料：http://tools.ietf.org/html/rfc6454#section-7.1
Cors 跨域Access-Control-Allow-Origin
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原文地址：http://www.cnblogs.com/tianma3798/p/5151551.html
