标签：res toe exce data end ring ade value protect
网上查了多种方法，有不少说法，报400说是传的数据格式不对，最后的结论确实是数据格式不对。
Content_Type为：application/json，配的数据格式有些麻烦，特别数多层，单层还好。
例如，我本传的数据是这个的json：
{
"key1": {
"key11": "value11",
"key12": "value12"
},
"key2": "value2"
}
这时候，postData应该为：{"client":"{\"machineId\":\"1040\",\"value\":\"1\"}","userId":"5","temp":"91D3EB4181237881A227DF29B304738D"}
c#里赋值写法为：
string _postData = "{\"client\":\"{\\\"machineId\\\":\\\"1040\\\",\\\"value\\\":\\\"1\\\"}\",\"userId\":\"5\",\"temp\":\"91D3EB4181237881A227DF29B304738D\"}";
post的方法：
protected string PostUrl(string url, string postData) { try { HttpWebRequest webrequest = (HttpWebRequest)HttpWebRequest.Create(url); webrequest.Method = "post"; webrequest.ContentType = "application/json;charset=utf-8"; byte[] postdatabyte = Encoding.UTF8.GetBytes(postData); webrequest.ContentLength = postdatabyte.Length; Stream stream; stream = webrequest.GetRequestStream(); stream.Write(postdatabyte, 0, postdatabyte.Length); stream.Close(); using (var httpWebResponse = webrequest.GetResponse()) using (StreamReader responseStream = new StreamReader(httpWebResponse.GetResponseStream())) { String ret = responseStream.ReadToEnd(); string result = ret.ToString(); return result; } } catch (Exception ex) { HttpContext.Current.Response.Write(ex); return ""; } }
如果posData的格式写错，运行后报错(using (var httpWebResponse = webrequest.GetResponse()))：System.Net.WebException: 远程服务器返回错误: (400) 错误的请求。 在 System.Net.HttpWebRequest.GetResponse() 。
post数据时报错：远程服务器返回错误: (400) 错误的请求。
标签：res toe exce data end ring ade value protect
原文地址：https://www.cnblogs.com/Iven-zhang/p/10161648.html
