英文:
go:embed fs only works for the root with http server?
问题
我有以下的目录结构：
web/
dist/
index.html
main.go
main.go 的内容如下：
package main
import (
"embed"
"io/fs"
"net/http"
)
//go:embed web/dist
var webfs embed.FS
func main() {
mux := http.NewServeMux()
sub, err := fs.Sub(webfs, "web/dist")
if err != nil {
panic(err)
}
mux.Handle("/", http.FileServer(http.FS(sub)))
http.ListenAndServe(":2222", mux)
}
当代码运行时，我可以通过 http://127.0.0.1:2222 获取到 index.html 的内容。然而，当我将代码改为以下内容时：
mux.Handle("/admin/", http.FileServer(http.FS(sub)))
当访问 http://127.0.0.1:2222/admin/ 时，我得到了 404 错误。
英文:
I have the following directory structure:
web/
dist/
index.html
main.go
the content of main.go:
package main
import (
"embed"
"io/fs"
"net/http"
)
//go:embed web/dist
var webfs embed.FS
func main() {
mux := http.NewServeMux()
sub, err := fs.Sub(webfs, "web/dist")
if err != nil {
panic(err)
}
mux.Handle("/", http.FileServer(http.FS(sub)))
http.ListenAndServe(":2222", mux)
}
When the code is run, I could get the content of index.html through http://127.0.0.1:2222. However, when I changed the line to:
mux.Handle("/admin/", http.FileServer(http.FS(sub)))
I get 404 when accessing http://127.0.0.1:2222/admin/.
答案1
得分: 2
你需要从请求路径中去掉/admin/（否则文件服务器将在web/dist/admin中查找）。例如：
mux.Handle("/admin/", http.StripPrefix("/admin/", http.FileServer(http.FS(sub))))
有关更多信息，请参阅StripPrefix的文档。
英文:
You will need to strip the /admin/ off the request path (otherwise the file server will be looking in web/dist/admin). e.g.
mux.Handle("/admin/", http.StripPrefix("/admin/", http.FileServer(http.FS(sub))))
See the docs for StripPrefix for more info.
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