golang服务器上传文件响应网络::ERR_EMPTY_REPONSE



我正在使用DART+golang将一个小音频文件上传到服务器。一切都很好,直到我发帖并没有返回任何东西。我想返回文件名,这样我就可以更改输入的标签文本。

1) 戈兰:

import (
    "encoding/json"
    "io/ioutil"
    "log"
    "net/http"
    "time"
    "fmt"
    "os"
    "io"
)
http.HandleFunc("/upload", webUploadHandler)
[...] 
func webUploadHandler(w http.ResponseWriter, r *http.Request) {
   file, header, err := r.FormFile("file") // the FormFile function takes in the POST input id file
   defer file.Close()
   if err != nil {
      fmt.Fprintln(w, err)
      return
   }
   out, err := os.Create("/tmp/uploadedfile")
   if err != nil {
      fmt.Fprintf(w, "Unable to create the file for writing. Check your write access privilege")
      return
   }

   defer out.Close()
   // write the content from POST to the file
   _, err = io.Copy(out, file)
   if err != nil {
      fmt.Fprintln(w, err)
   }
   fmt.Fprintf(w,"File uploaded successfully : ")
   fmt.Fprintf(w, header.Filename)
}

2) DART响应,警报

window.alert("upload complete");工作

3) Chromium控制台中的错误:

POST http://localhost:9999/upload net::ERR_EMPTY_RESPONSE 

我对GOLANG很陌生,所以任何帮助我都将不胜感激。

上面代码中的第一个错误:

defer file.Close()

在检查之前

if err != nil

--更新

和缺失的第2部分,在DART中:

req.setRequestHeader("Content-type","multipart/form-data");

最新更新