golang跨域问题以及客户端通过http上传多个文件

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  func thUploadFile(w http.ResponseWriter, r *http.Request) {

1. 
   
2. .....
3. //解决跨域问题
4. if origin := r.Header.Get("Origin"); origin != "" {
   
5.             w.Header().Set("Access-Control-Allow-Origin", "*")
   
6.             w.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
   
7. 
   
8.         }
   
9.         r.ParseMultipartForm(32 << 20)
   
10. //解决上传多个文件问题，每个文件分别保存
11.         fhs := r.MultipartForm.File["uploadfile"]
    
12.         for _, fh := range fhs {
    
13. 
    
14.             file, _ := fh.Open()
    
15.             f, err := os.OpenFile(thUpload_Dir+fh.Filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666)
    
16.             if err != nil {
    
17.                 slog.Error("打开文件错误")
    
18.                 return
    
19.             }
    
20.             defer f.Close()
    
21.             io.Copy(f, file)
    
22. 
    
23.             //filedir, _ := filepath.Abs(Upload_Dir + fh.Filename)
    
24.             //fmt.Fprintf(w, "%v", fh.Filename+"上传完成，服务器地址："+filedir)
    
25.         }
26. ....