jQuery 如何通过 ASP.Net context.Request 检索 JSON
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How to retrieve JSON via ASP.Net context.Request
提问by agentpx
var OrderInfo = {"ProductID":
"ProductIDValue",
"ProductName": "ProductName",
"Quantity": 1,
"Amount": 9999,
"SLQuantity": 9999,
"SLDate": "08/03/2010"
};
var DTO = { 'OrderInfo': OrderInfo };
$.ajax({
type: "POST",
contentType: "application/json; charset=utf-8",
url: "JasonHandler.ashx",
data: JSON.stringify(DTO),
dataType: "json"
});
I'm trying to retrieve posted JSON data on server side in an ASHX file via this code:
我正在尝试通过以下代码在 ASHX 文件中检索服务器端发布的 JSON 数据：
string strrequest = context.Request["OrderInfo"];
but it always return null. What Am I doing wrong?
但它总是返回空值。我究竟做错了什么？
采纳答案by ronaldwidha
- get the request body from HttpContext.Current.Request.InputStream.
- read the input stream and convert to string
- use javascriptserializerto deserialize the json object to a strongly type object (ensure the json properties share the same name as the strongly type counter part)
- 从HttpContext.Current.Request.InputStream获取请求正文。
- 读取输入流并转换为字符串
- 使用javascriptserializer将 json 对象反序列化为强类型对象（确保 json 属性与强类型计数器部分共享相同的名称）
回答by agentpx
Digging the Internet. I found out that IE has problem receiving POST request in full. @ronaldwidha's suggestion on InputStream is similar to what I have found. But rather than using javascriptserializer I use JSON.NET Code snippets is below and I hope this would help other with similar problem
挖掘互联网。我发现 IE 无法完全接收 POST 请求。@ronaldwidha 对 InputStream 的建议与我发现的相似。但是我没有使用 javascriptserializer，而是使用下面的 JSON.NET 代码片段，我希望这能帮助其他有类似问题的人
public class JasonHandler : IHttpHandler {
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "application/json";
context.Response.ContentEncoding = Encoding.UTF8;
System.IO.Stream body = context.Request.InputStream;
System.Text.Encoding encoding = context.Request.ContentEncoding;
System.IO.StreamReader reader = new System.IO.StreamReader(body, encoding);
if (context.Request.ContentType != null)
{
context.Response.Write("Client data content type " + context.Request.ContentType);
}
string s = reader.ReadToEnd();
string[] content = s.Split('&');
for (int i = 0; i < content.Length; i++)
{
string[] fields = content[i].Split('=');
//context.Response.Write("<div><strong>" + fields[0] + "</strong></div>");
//context.Response.Write("<div>" + fields[1] + "</div> ");
}
string jsonRecord = s;
}
}
回答by Peter
From http://dailydotnettips.com/2013/09/26/sending-raw-json-request-to-asp-net-from-jquery/
来自http://dailydotnettips.com/2013/09/26/sending-raw-json-request-to-asp-net-from-jquery/
var jsonString = String.Empty;
context.Request.InputStream.Position = 0;
using (var inputStream = new StreamReader(context.Request.InputStream))
{
jsonString = inputStream.ReadToEnd();
}
JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
object serJsonDetails = javaScriptSerializer.Deserialize(jsonString, typeof(object));
回答by Mike
Request[] will only look at form params and quetystring. You will need to do a form post or use qs or parse the request body yourself.
Request[] 只会查看表单参数和查询字符串。您将需要进行表单发布或使用 qs 或自己解析请求正文。
回答by Frank Schwieterman
I think you could get the request body out of HttpCurrent.Context.Request.GetResponse().
我认为您可以从 HttpCurrent.Context.Request.GetResponse() 中获取请求正文。
Its probably a good idea to verify the content-type header first.
首先验证内容类型标头可能是个好主意。
