英文:
FileServer handler with some other HTTP handlers
问题
我正在尝试在Go中启动一个HTTP服务器，使用自己的处理程序来提供自己的数据，但同时我想使用默认的http FileServer来提供文件。
我在使FileServer的处理程序在URL子目录中工作方面遇到了问题。
以下代码不起作用：
package main
import (
"fmt"
"log"
"net/http"
)
func main() {
http.Handle("/files/", http.FileServer(http.Dir(".")))
http.HandleFunc("/hello", myhandler)
err := http.ListenAndServe(":1234", nil)
if err != nil {
log.Fatal("Error listening: ", err)
}
}
func myhandler(w http.ResponseWriter, req *http.Request) {
fmt.Fprintln(w, "Hello!")
}
我希望在localhost:1234/files/中找到本地目录，但它返回一个“404页面未找到”。
然而，如果我将文件服务器的处理程序地址更改为/，它就可以工作：
/* ... */
http.Handle("/", http.FileServer(http.Dir(".")))
但现在我的文件可以在根目录中访问和显示。
如何使其从不同的URL而不是根目录提供文件？
英文:
I'm trying to start a HTTP server in Go that will serve my own data using my own handlers, but at the same time I would like to use the default http FileServer to serve files.
I'm having problems to make the handler of the FileServer to work in a URL subdirectory.
This code is not working:
package main
import (
"fmt"
"log"
"net/http"
)
func main() {
http.Handle("/files/", http.FileServer(http.Dir(".")))
http.HandleFunc("/hello", myhandler)
err := http.ListenAndServe(":1234", nil)
if err != nil {
log.Fatal("Error listening: ", err)
}
}
func myhandler(w http.ResponseWriter, req *http.Request) {
fmt.Fprintln(w, "Hello!")
}
I was expecting to find the local directory in localhost:1234/files/ but it returns a 404 page not found.
However, if I change the handler address of the fileserver to /, it works:
/* ... */
http.Handle("/", http.FileServer(http.Dir(".")))
But now my files are accessible and visible at the root directory.
How can I make it to serve files from a different URL than root?
答案1
得分: 22
你需要使用http.StripPrefix处理程序：
http.Handle("/files/", http.StripPrefix("/files/", http.FileServer(http.Dir("."))))
参见这里：http://golang.org/pkg/net/http/#example_FileServer_stripPrefix
英文:
You need to use the http.StripPrefix handler:
http.Handle("/files/", http.StripPrefix("/files/", http.FileServer(http.Dir("."))))
See here: http://golang.org/pkg/net/http/#example_FileServer_stripPrefix
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