http - Go Golang 提供特定的 html 文件

Question

http.Handle("/", http.FileServer(http.Dir("static")))

在静态目录中提供 html 文件。

在 Go 中有什么方法可以指定要服务的 html 文件吗？

Flask中的render_template之类的东西

我想做这样的事情:

http.Handle("/hello", http.FileServer(http.Dir("static/hello.html")))

Answer 1

也许使用 custom http.HandlerFunc会更容易:

除了你的情况，你的函数是 http.ServeFile一，只提供一个文件。

参见例如“Go Web Applications: Serving Static Files”:

Add the following below your home handler (see below):

http.HandleFunc("/static/", func(w http.ResponseWriter, r *http.Request) {
   // do NOT do this. (see below)
    http.ServeFile(w, r, r.URL.Path[1:])
})

This is using the net/http package’s ServeFile function to serve our content.
Effectively anything that makes a request starting with the /static/ path will be handled by this function.
One thing I found I had to do in order for the request to be handled correctly was trim the leading ‘/’ using:

r.URL.Path[1:]

实际上，不要那样做。
这在 Go 1.6 中是不可能的，因为 sztanpet comments , 与 commit 9b67a5d :

If the provided file or directory name is a relative path, it isinterpreted relative to the current directory and may ascend to parentdirectories.
If the provided name is constructed from user input, it should be sanitized before calling ServeFile.
As a precaution, ServeFile will reject requests where r.URL.Path contains a ".." path element.

这将防止以下“url”:

/../file
/..
/../
/../foo
/..\\foo
/file/a
/file/a..
/file/a/..
/file/a\\..