Golang实现http文件上传小功能

发布时间：2020-12-16 18:32:20 所属栏目：大数据来源：网络整理

导读：package mainimport ("fmt""io""net/http""os")func main() {http.HandleFunc("/",index)http.HandleFunc("/upload",upload)http.ListenAndServe(":1789",nil)}func upload(w http.ResponseWriter,r *http.Request) {r.ParseMultipartForm(32 20)file,handle

package main

import (
	"fmt"
	"io"
	"net/http"
	"os"
)

func main() {
	http.HandleFunc("/",index)
	http.HandleFunc("/upload",upload)
	http.ListenAndServe(":1789",nil)
}

func upload(w http.ResponseWriter,r *http.Request) {
	r.ParseMultipartForm(32 << 20)
	file,handler,err := r.FormFile("uploadfile")
	if err != nil {
		fmt.Println(err)
		return
	}
	defer file.Close()
	f,err := os.OpenFile(handler.Filename,os.O_WRONLY|os.O_CREATE,0666)
	if err != nil {
		fmt.Println(err)
		return
	}
	defer f.Close()
	io.Copy(f,file)
	fmt.Fprintln(w,"upload ok!")
}

func index(w http.ResponseWriter,r *http.Request) {
	w.Write([]byte(tpl))
}

const tpl = `<html>
<head>
<title>上传文件</title>
</head>
<body>
<form enctype="multipart/form-data" action="/upload" method="post">
 <input type="file" name="uploadfile" />
 <input type="hidden" name="token" value="{...{.}...}"/>
 <input type="submit" value="upload" />
</form>
</body>
</html>`

（编辑：李大同）

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