从ajax发布获取json数据

Question

I am trying to get json data from my jquery ajax in ashx file, but result is somehow unusable. how can I get and bind it to dynamic or alternative?

public void ProcessRequest(HttpContext context)
{
    context.Response.ContentType = "text/plain";
    var result = new StreamReader(context.Request.InputStream).ReadToEnd();
}

result

maintype=Entity.JobApplication&feeds=&fields%5B0%5D%5Bkey%5D=EmployeeRequest&fields%5B0%5D%5Bvalue%5D=1&fields%5B1%5D%5Bkey%5D=State&fields%5B1%5D%5Bvalue%5D=1&fields%5B2%5D%5Bkey%5D=FirstName&fields%5B2%5D%5Bvalue%5D=11&fields%5B3%5D%5Bkey%5D=LastName&fields%5B3%5D%5Bvalue%5D=22

**json data**

var data = {
  "maintype": "Entity.JobApplication",
  "feeds": "",
  "fields": [
    {
      "key": "EmployeeRequest",
      "value": ""
    },
    {
      "key": "State",
      "value": ""
    },
    {
      "key": "FirstName",
      "value": ""
    },
    {
      "key": "LastName",
      "value": ""
    }
  ]
};


var data = <%=AjaxJSON%>;

for (var i in data.fields)
{
    var o = $("[prop=" + data.fields[i].key + "]");
    data.fields[i].value = o.val();
}
genericAjax("/_Handler/CreateEntity.ashx", data);

Answer 1

You need to use WebUtility.UrlDecode to decode your string.

public void ProcessRequest(HttpContext context)
{
    context.Response.ContentType = "text/plain";
    var result =WebUtility.UrlDecode(new StreamReader(context.Request.InputStream).ReadToEnd());
}

Result:

maintype=Entity.JobApplication&feeds=&fields[0][key]=EmployeeRequest&fields[0][value]=1&fields[1][key]=State&fields[1][value]=1&fields[2][key]=FirstName&fields[2][value]=11&fields[3][key]=LastName&fields[3][value]=22

By the way, the data you get is not Json-ready format.

Here you can parse it to more close to json (Add reference: System.Web, System.Web.Extension):

string s = "maintype=Entity.JobApplication&feeds=&fields%5B0%5D%5Bkey%5D=EmployeeRequest&fields%5B0%5D%5Bvalue%5D=1&fields%5B1%5D%5Bkey%5D=State&fields%5B1%5D%5Bvalue%5D=1&fields%5B2%5D%5Bkey%5D=FirstName&fields%5B2%5D%5Bvalue%5D=11&fields%5B3%5D%5Bkey%5D=LastName&fields%5B3%5D%5Bvalue%5D=22";
var dict = System.Web.HttpUtility.ParseQueryString(s);
var json = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(
                    dict.AllKeys.ToDictionary(k => k, k => dict[k]));

You will get:

{"maintype":"Entity.JobApplication","feeds":"","fields[0][key]":"EmployeeRequest","fields[0][value]":"1","fields[1][key]":"State","fields[1][value]":"1","fields[2][key]":"FirstName","fields[2][value]":"11","fields[3][key]":"LastName","fields[3][value]":"22"}

Do a few more step you can convert it to json.

Answer 2

我通过使用JSON.stringify(data)解决了

genericAjax("/_Handler/CreateEntity.ashx", JSON.stringify(data));