设置 HTTP 标头 [英] Setting HTTP headers

问题描述

我正在尝试在我的 Go 网络服务器中设置一个标头.我正在使用 gorilla/mux 和 net/http 包.

I'm trying to set a header in my Go web server. I'm using gorilla/mux and net/http packages.

我想设置 Access-Control-Allow-Origin: * 以允许跨域 AJAX.

I'd like to set Access-Control-Allow-Origin: * to allow cross domain AJAX.

这是我的 Go 代码:

Here's my Go code:

func saveHandler(w http.ResponseWriter, r *http.Request) {
// do some stuff with the request data
}

func main() {
    r := mux.NewRouter()
    r.HandleFunc("/save", saveHandler)
    http.Handle("/", r)
    http.ListenAndServe(":"+port, nil)
}

net/http 包中有描述发送 http 请求标头的文档，就好像它是客户端一样 - 我不确定如何设置响应标头?

The net/http package has documentation describing sending http request headers as if it were a client - I'm not exactly sure how to set response headers?

推荐答案

没关系，我想通了 - 我在 Header() 上使用了 Set() 方法(哦！)

Never mind, I figured it out - I used the Set() method on Header() (doh!)

我的处理程序现在看起来像这样:

My handler looks like this now:

func saveHandler(w http.ResponseWriter, r *http.Request) {
    // allow cross domain AJAX requests
    w.Header().Set("Access-Control-Allow-Origin", "*")
}

也许这会在某个时候帮助像我这样缺乏咖啡因的人:)

Maybe this will help someone as caffeine deprived as myself sometime :)

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