将文件上传到远程表单时，通用/未知的HTTP错误 [英] Generic/unknown HTTP error when uploading files to a remote form

问题描述

我有一个HTML 页面，其中包含用于将文件上传到SmartFile的表格.下面是我用来将Unity中游戏文件上传到此url的C#代码.

I have an HTML page with a form for uploading files to SmartFile. Below is the piece of C# code that I am using to upload the files from my game in Unity to this url.

WWWForm fileForm = new WWWForm();
string[] files = Directory.GetFiles(".", "*.txt");
fileForm.AddField("file", files[0]);
WWW www = new WWW("https://file.ac/xySSFOicMMk", fileForm);            

不幸的是，它导致以下异常.怎么了?

Unfortunately it is leading to the below exception. What is wrong here?

发送分析数据时出现连接错误...错误:415不支持 媒体类型UnityEngine.Debug:LogError(Object) c__Iterator0:MoveNext()(位于Assets/Survey/Survey.cs:99) UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator，IntPtr)

Connection error while sending analytics... Error:415 Unsupported Media Type UnityEngine.Debug:LogError(Object) c__Iterator0:MoveNext() (at Assets/Survey/Survey.cs:99) UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

更新1:-我将第三行更改为fileForm.AddBinaryData("file", File.ReadAllBytes(files[i]), files[i], "text/plain");

Update 1:- I changed the 3rd line to fileForm.AddBinaryData("file", File.ReadAllBytes(files[i]), files[i], "text/plain");

我再也没有收到错误提示，但是即使www.isDone返回的是true，仍然看不到文件正在上传.

I'm not getting the error anymore, but still can't see the file getting uploaded, even though www.isDone is returning true.

更新2:-还尝试了 UnityWebRequest API，它导致了到

Update 2:- Tried the UnityWebRequest API as well, it led to

一般/未知的HTTP错误(400个响应代码)

Generic/unknown HTTP error (400 response code)

List<IMultipartFormSection> formData = new List<IMultipartFormSection>();           
byte[] bytes = File.ReadAllBytes(files[0]);
files[0] = files[0].Replace(@".\","");      
formData.Add(new MultipartFormFileSection("file", bytes, files[0], "text/plain"));
StartCoroutine(UploadFile(formData));  
IEnumerator UploadFile(List<IMultipartFormSection> formData)
{       
    UnityWebRequest www = UnityWebRequest.Post("https://file.ac/xySSFOicMMk", formData);
    yield return www.SendWebRequest();

    if (www.isNetworkError || www.isHttpError)
    {
        Debug.Log(www.error);
    }
    else
    {
        Debug.Log("Form upload complete!");
    }
}

UnityWebRequest.Post似乎也不适用于Unity版本2017.3.1f1(64位)中的WWWForm' or List`

UnityWebRequest.Post does not seem to work either with WWWForm' orList` in the Unity version 2017.3.1f1 (64-bit)

推荐答案

将HttpWebRequest与找到的解决方案一起使用 https://pastebin.com/wNQ46s0H

Used the HttpWebRequest with the solution found here alongwith this to fix the certificate error in Unity and finally had some peace of mind. Entire solution is posted here - https://pastebin.com/wNQ46s0H

为了使WWWForm正常工作，您需要在表单中同时包含二进制和非二进制数据-

Seems like in order for WWWForm to work, you need to have both the binary and non-binary data in your form - HttpWebRequest post paramaters for AWS file upload request, leading to 400 error

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