GoLang 实现一个最简单的http文件服务器

PathToYou

How to use

• 关闭防火墙
• 运行 GoServer.exe，不要关闭命令行窗口
• 将本地文件放到 go 文件根目录的 file 文件夹中即可实现内网共享文件
• 浏览器访问 http://localhost:8080/pollux/，将localhost替换成本地IP地址

FileServer.go

package main
import (
    "log"
    "net/http"
    "os"
)
func main() {
    os.Mkdir("file", 0777)
    http.Handle("/pollux/", http.StripPrefix("/pollux/", http.FileServer(http.Dir("file"))))
    err := http.ListenAndServe(":8080", nil)
    if err != nil {
        log.Fatal("ListenAndServe: ", err)
    }
}

func FileServer

FileServer returns a handler that serves HTTP requests with the contents of the file system rooted at root.To use the operating system's file system implementation, use http.Dir:

func StripPrefix

StripPrefix returns a handler that serves HTTP requests by removing the given prefix from the request URL's Path and invoking the handler h. StripPrefix handles a request for a path that doesn't begin with prefix by replying with an HTTP 404 not found error.

StripPrefix() 识别 URL 请求中的给定的前缀prefix，如 http://localhost:8080/pollux/ 中的 /pollux/，然后响应函数中的第二个参数 handler h，假如没有识别到给定的前缀，则响应404。