关于unity3d：使用WWWForm的格式错误的HTTP帖子

Malformed HTTP post using WWWForm

我正在使用UnityHTTP(https://github.com/andyburke/UnityHTTP)来调用REST API(KiiCloud http://www.kii.com)，它的效果很好，但是我想摆脱第3方库如果可能的话，并使用Unity的WWW和WWWForm实现相同的目的。

这是使用UnityHTTP的代码，可以正常工作：

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public static void RunServerExtension (string appId, string appKey, string endpoint, string kii_access_token, string msg)
{
Hashtable data = new Hashtable();
// Add json fields with values here (use as dictionary)
data.Add("message", msg);

// When you pass a Hashtable as the third argument, we assume you want it send as JSON-encoded
// data. We'll encode it to JSON for you and set the Content-Type header to application/json
HTTP.Request myRequest = new HTTP.Request("post","https://api.kii.com/api/apps/" + appId +"/server-code/versions/current/" + endpoint, data);

myRequest.AddHeader("x-kii-appid", appId);
myRequest.AddHeader("x-kii-appkey", appKey);
if(kii_access_token != null)
theRequest.AddHeader("Authorization","Bearer" + kii_access_token);

myRequest.Send( ( request ) => {
// we provide Object and Array convenience methods that attempt to parse the response as JSON
// if the response cannot be parsed, we will return null
// note that if you want to send json that isn't either an object ({...}) or an array ([...])
// that you should use JSON.JsonDecode directly on the response.Text, Object and Array are
// only provided for convenience
Hashtable result = request.response.Object;
if ( result == null )
{
Debug.LogWarning("Could not parse JSON response!" );
return;
}
Debug.Log ("Got response");
Debug.Log(request.response.Text);
});
}

所以上面的工作很好，但是当我以这种方式切换到WWWForm时：

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public static WWW RunServerExtension (string appId, string appKey, string endpoint, string kii_access_token, string msg)
{
WWWForm form = new WWWForm();
Hashtable headers = form.headers;
headers["Content-Type"] ="application/json";
headers["x-kii-appid"] = appId;
headers["x-kii-appkey"] = appKey;
if(kii_access_token != null)
headers["Authorization"] ="Bearer" + kii_access_token;
form.AddField("message", msg);
return new WWW("https://api.kii.com/api/apps/" + appId +"/server-code/versions/current/" + endpoint, form.data, headers);
}

private IEnumerator WaitForRequest(WWW www)
{
yield return www;

// check for errors
if (www.error == null)
{
Debug.Log("WWW Ok!:" + www.text);
} else {
Debug.Log("WWW Error:"+ www.error);
}
}

我在服务器端收到错误请求(意味着请求格式错误，而不是服务器期望的内容)。请注意，必须将标头作为参数传递，否则服务器会抱怨缺少标头。

我怀疑这可能与服务器需要JSON数据有关，因此我使用UnityHTTP JSON类(您可以仅使用该隔离的类进行JSON编码/解码)将消息转换为JSON https://github.com/andyburke/ UnityHTTP / blob / master / external / JSON.cs，因此此方法将{" message"：" This is echoed !!"}作为数据传递：

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public static WWW RunServerExtension (string appId, string appKey, string endpoint, string kii_access_token, string msg)
{
WWWForm form = new WWWForm();
Hashtable headers = form.headers;
headers["Content-Type"] ="application/json";
headers["x-kii-appid"] = appId;
headers["x-kii-appkey"] = appKey;
if(kii_access_token != null)
headers["Authorization"] ="Bearer" + kii_access_token;
Hashtable data = new Hashtable();
data["message"] = msg;
byte[] bytes = GetBytes(JSON.JsonEncode(data));
return new WWW("https://api.kii.com/api/apps/" + appId +"/server-code/versions/current/" + endpoint, bytes, headers);
}

static byte[] GetBytes(string str)
{
byte[] bytes = new byte[str.Length * sizeof(char)];
System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
return bytes;
}

但是仍然有相同的错误请求。您知道为什么这可能会失败吗？为什么UnityHTTP可以工作？