如何使用请求正文进行 GET

Question

How do I make a GET query with request body using RestSharp (I'm using RestSharp v. 106.6.10 with .NET Core 2.2 ). I can do it using WebClient / Postman etc. no problem.

Here's the code failing with {["A non-empty request body is required."]} .

var client = new RestClient("BaseUri");
var request = new RestRequest("URL", Method.GET);
request.AddJsonBody(Body); 
client.Execute(request); // {["A non-empty request body is required."]}

This represents a valid use case, pity if it's not supported.

Update : The motivation for having GET requests with body is to avail of get requests having complex parameters, which can't be nicely encoded into a query string. I know people serialize their jsons an put them into a querystrings but I'd rather put it into a request body, considering it's a permissible usage after all.

Answer 1

From my experience AddJsonBody is completely broken (had a multiple times when it wasn't serialize my model just pasting in Body something like MyProject.Models.MyModel or even left body empty). So I use following:

var client = new RestClient("BaseUri");
var request = new RestRequest("URL", Method.GET);
request.AddHeader("Content-Type", "application/json");
string serializedBody = Newtonsoft.Json.JsonConvert.SerializeObject(Body);
request.AddParameter("application/json; charset=utf-8", serializedBody, ParameterType.RequestBody);
client.Execute(request);

UPDATE sorry i wasn't patient when reading you question. Answer is provided for RestSharp not PostSharp

Answer 2

I solved it by using reflection , to trick WebRequest that it is legal to send a body with a GET request.

1.Create Model for body parameters,

public class SampleBodyModel
{
    public String name{ get; set; }
    public String password{ get; set; }
}

2. Initialize the request.

    SampleBodyModel sampleRequest = new SampleBodyModel { name= "name", password= "password" }; //initialize the API call var request = WebRequest.Create("API_END_POINT"); request.ContentType = "application/json"; request.Method = "GET"; var myHttpWebRequest = (HttpWebRequest)request; // ------- Add these two lines if your using JWT token ------- myHttpWebRequest.PreAuthenticate = true; myHttpWebRequest.Headers.Add("Authorization", "Bearer " + "TOKEN"); // ----------------------------------------------------------- var type = myHttpWebRequest.GetType(); var currentMethod = type.GetProperty("CurrentMethod", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(myHttpWebRequest); var methodType = currentMethod.GetType(); methodType.GetField("ContentBodyNotAllowed", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(currentMethod, false); //Add the Request body using (var streamWriter = new StreamWriter(myHttpWebRequest.GetRequestStream())) { streamWriter.Write(Newtonsoft.Json.JsonConvert.SerializeObject(sampleRequest)); } var response = (HttpWebResponse)myHttpWebRequest.GetResponse(); var responseStream = response.GetResponseStream(); var myStreamReader = new StreamReader(responseStream, Encoding.Default); var json = myStreamReader.ReadToEnd(); responseStream.Close(); response.Close();