The EasyWay
Handle static files in Golang is very straightforward just one line of code to do this:
http.Handle("/", http.StripPrefix(strings.TrimRight(path, "/"), http.FileServer(http.Dir(directory))))
where path is http path and directory is the static directory you want to serve over http
But, there is a problem, by accessing to root url you can expose your directory structure to public as well =_=:
listing directory
The code is:
https://gist.github.com/hauxe/09cd680deb9c8c4e36d61568db57647b
We need to do something to prevent this danger
First Don’t use default HTTP File server, we’ll create our custome http file server and reject which request accessing to directory path:
https://gist.github.com/hauxe/f88a87f4037bca23f04f6d100f6e08d4#file-http_static_custom_http_server-go
The custom rule that I chose is: if accessing to a directory, and if that directory contains index.html, return it, otherwise return error
Second Register HTTP File server with this custom struct:
fileServer := http.FileServer(FileSystem{http.Dir(directory)})
http.Handle("/", http.StripPrefix(strings.TrimRight(path, "/"), fileServer))
If you access it again:
Successfully prevents
Put a index.html file into statics folder and run example again with new code:
After put index.html
Full working code:
https://gist.github.com/hauxe/f2ea1901216177ccf9550a1b8bd59178#file-http_static_correct-go
I have made a Repo for this purpose which return the http handler for it
Top comments (0)