1.Access-Control-Allow-Origin 指定格式

The Origin header field has the following syntax:origin              = "Origin:" OWS origin-list-or-null OWSorigin-list-or-null = %x6E %x75 %x6C %x6C / origin-listorigin-list         = serialized-origin *( SP serialized-origin )serialized-origin   = scheme "://" host [ ":" port ]                   ; 
     
      , 
      
       , 
       
         from RFC 3986
       
      
     

origin              = "Origin:" OWS origin-list-or-null OWSorigin-list-or-null = %x6E %x75 %x6C %x6C / origin-listorigin-list         = serialized-origin *( SP serialized-origin )serialized-origin   = scheme "://" host [ ":" port ]

 

 

 

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