FileServer处理程序与其他一些HTTP处理程序 [英] FileServer handler with some other HTTP handlers

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问题描述

我试图在Go中启动一个HTTP服务器,它将使用我自己的处理程序提供自己的数据,但同时我想使用默认的http FileServer来提供文件。



我有问题要使FileServer的处理程序在URL子目录中工作。



此代码不起作用:

p>

 包主

导入(
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!)
}

我是期望在localhost:1234 / files /中找到本地目录,但它返回一个 404页未找到



但是,如果我将文件服务器的处理程序地址更改为/作品:

  / * ... * / 
http.Handle(/,http.FileServer(http .Dir(。)))

但是现在我的文件可以在根目录。

我如何才能使用不同于root的URL来提供文件?

解决方案

您需要使用 http.StripPrefix 处理程序:

  http.Handle(/ files /,http.StripPrefix(/ files /,http.FileServer(http.Dir 。))))

请参阅: http://golang.org/pkg/net/http/#example_FileServer_stripPrefix


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?

解决方案

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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