Question

在其他类似问题中找不到解决方案。我得到远程服务器返回错误：（400）运行以下代码时出现错误的请求错误。

string url = @"http://api.dwaybill.com/" + cid + 
               "/orders.json?v=" + version + "&key=" + key + 
               "&customer_number=" + customer_number + 
               "&password=" + password;

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
UTF8Encoding encoding = new UTF8Encoding();

byte[] bytes1 = encoding.GetBytes(@"{"Here is the json text that i testet and is correct"}");

request.Method = "POST";
request.ContentType = "application/json";
request.ContentLength = bytes1.Length;

using (Stream sendStream = request.GetRequestStream())
{
    sendStream.Write(bytes1, 0, bytes1.Length);
}
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
    using (Stream stream = response.GetResponseStream())
    {
        using (StreamReader reader = new StreamReader(stream))
        {
            html = reader.ReadToEnd();
        }
    }
}
Console.WriteLine(html);

通过(HttpWebResponse response = (HttpWebResponse)request.GetResponse())收到响应时，我收到 400错误的请求错误。

如何解决此问题？我该怎么办？

编辑：这是我试图发出发布请求的API：https://github.com/digwaybill/Digital-Waybill-API

Answer 1

错误似乎是由于缺少标题所致。

请在请求前以以下格式添加以下标头：

request.Headers["Accept"] = " application/json";

以您的示例为例，

name

请如下更新JSON行。杰森需要一个关键和价值。随时将byte[] bytes1 = encoding.GetBytes("{\"name\":\"Here is the json text that i testet and is correct\"}");更新为任何其他字符串。此外，双引号会干扰必须转义的字符串格式。

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远程服务器返回错误（400）错误的请求，状态为ProtocolError

1 个答案: