Go语言框架Beego跨域踩过的坑

跨域访问不成功
初始设置

    web.InsertFilter("*", web.BeforeRouter, cors.Allow(&cors.Options{
        AllowAllOrigins: true,
        AllowMethods:     []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
        AllowHeaders:     []string{"Origin", "Authorization", "Access-Control-Allow-Origin", "Access-Control-Allow-Headers", "Content-Type"},
        ExposeHeaders:    []string{"access-token", "Content-Length", "Access-Control-Allow-Origin", "Access-Control-Allow-Headers", "Content-Type"},
        AllowCredentials: true,
    }))

别人跟我配置的一样，我的为什么不行？仔细对照发现问题
我的前端请求的时候带了"access-token", "a-auth-token", "x-auth-token", 这三个header
所以需要加在配置中

    web.InsertFilter("*", web.BeforeRouter, cors.Allow(&cors.Options{
        AllowAllOrigins: true,
        AllowMethods:     []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
        AllowHeaders:     []string{"access-token", "a-auth-token", "x-auth-token", "Origin", "Authorization", "Access-Control-Allow-Origin", "Access-Control-Allow-Headers", "Content-Type"},
        ExposeHeaders:    []string{"access-token", "Content-Length", "Access-Control-Allow-Origin", "Access-Control-Allow-Headers", "Content-Type"},
        AllowCredentials: true,
    }))

这样就OK了