golang post模拟客户端多文件上传以及处理

为了模拟客户端和服务器端，我这儿开了两个进程，进程A（监听地址：http://192.168.50.250:8080 路由/objects）进程B（监听地址：http://192.168.50.250:8081 路由:/objetcs）方法都是post。进程A是监听客户上传的文件，然后模拟http clien上传给进程B。在B中将文件存储或者将内容打印。

进程A post /ojects:

func PostFile(c *gin.Context){

    var b bytes.Buffer
    w := multipart.NewWriter(&b)
    c.Request.ParseMultipartForm(100000)
    multiPartform ,_:= c.MultipartForm()
        err := utils.CreatFormFiles(&b,multiPartform,w)
        if err != nil{
        fmt.Println(err)
        return
    }
    request,err:=http.NewRequest(http.MethodPost,"http://192.168.50.250:8081/objects",&b)
    if err != nil{
        fmt.Println(err)
        return
    }
    //模拟客户端请求，还可以在request.Form中添加其他信息，如username，password等key_values
    client := http.Client{Timeout:5*time.Second}
    request.Header.Set("Content-Type",w.FormDataContentType())
    resp,err := client.Do(request)
    if err != nil{
        fmt.Println(err)
        return
    }
    handlers.SendRespense(c,resp.StatusCode,"ok")
}

CreatFormFiles:

func CreatFormFiles(b *bytes.Buffer,form *multipart.Form,w *multipart.Writer)error{
    for name,files := range form.File{
        for _,file := range files{
            f,err := file.Open()
            if err != nil{
                return err
            }
            fw,err := w.CreateFormFile(name,file.Filename)
            if err != nil{
                return err
            }
            _,err = io.Copy(fw,f)
            if err != nil{
                return err
            }
        }
    }
    w.Close()  //要关闭，会将w.w.boundary刷写到w.writer中
    return nil
}

进程B post /obcjetcs：

c.Header("Access-Control-Allow-Origin", "*")
    c.Header("Access-Control-Allow-Methods", "GET,POST,PUT,PATCH,DELETE,OPTIONS")
    c.Header("Access-Control-Allow-Headers", "authorization, origin, content-type, accept")
    c.Header("Allow", "HEAD,GET,POST,PUT,PATCH,DELETE,OPTIONS")
    c.Header("Content-Type", "multipart/form-data")
    c.Request.ParseMultipartForm(5000000)
    form,err := c.MultipartForm()
    if err != nil{
        c.JSON(500,"bad form")
    }
    fheaders := form.File["upload"]
    for _,fheader := range fheaders{
        fmt.Printf("name:%s,f:%v","upload",fheader.Filename)
    }
    c.JSON(200,"ok")

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