RestSharp 不支持的授权类型

Question

正在尝试使用 RestSharp 在我的 Web API 上查询 /token。

在 Fiddler 中，我可以编写查询并且通过以下方式执行没有问题： 1. 将方法设置为 POST 2.添加一个header：Content-Type: application/x-www-form-urlencoded 3、设置Body为：username=用户名&password=pass&grant_type=password

尝试在 RestSharp 中模仿：

RestClient tokenClient = new RestClient();
tokenClient.BaseUrl = new Uri(GlobalSettings.WebApiTokenUrl);
RestRequest req = new RestRequest(Method.POST);
req.AddHeader("Content-Type", "application/x-www-form-urlencoded");

//req.Parameters.Add(new Parameter() { Name = "username", Value = User.Identity.Name, Type = ParameterType.RequestBody, ContentType= "application/x-www-form-urlencoded" });
//req.Parameters.Add(new Parameter() { Name = "password", Value = User.Identity.Name, Type = ParameterType.RequestBody, ContentType = "application/x-www-form-urlencoded" });
//req.Parameters.Add(new Parameter() { Name = "grant_type", Value = "password", Type = ParameterType.RequestBody, ContentType = "application/x-www-form-urlencoded" });
//req.Parameters.Add(new Parameter() { Name = "response_type", Value = "token", Type = ParameterType.RequestBody, ContentType = "application/x-www-form-urlencoded" });
req.AddParameter(new Parameter() { Name = "username", Value = User.Identity.Name, Type = ParameterType.RequestBody, ContentType = "application/x-www-form-urlencoded" });
req.AddParameter(new Parameter() { Name = "password", Value = User.Identity.Name, Type = ParameterType.RequestBody, ContentType = "application/x-www-form-urlencoded" });
req.AddParameter(new Parameter() { Name = "grant_type", Value = "password", Type = ParameterType.RequestBody, ContentType = "application/x-www-form-urlencoded" });
//req.AddParameter(new Parameter() { Name = "response_type", Value = "token", Type = ParameterType.RequestBody });


IRestResponse response = tokenClient.Execute(req);

var content = response.Content;
// I get: {"error":"unsupported_grant_type"}

知道为什么这行不通吗？另外为什么Paramterobject里面有一个ContentType参数？我以为ContentType应该设置在header？（我也尝试从参数中删除 ContentType）

谢谢

Answer 1

看看这是否有效。

     request.AddParameter("Content-Type", "application/x-www-form-urlencoded", ParameterType.HttpHeader);
     string encodedBody = string.Format("username={0}&password= {1}&grant_type={2}", User.Identity.Name, User.Identity.Name,password);
     request.AddParameter("application/x-www-form-urlencoded", encodedBody, ParameterType.RequestBody);

参考这个post。 https://salesforce.stackexchange.com/questions/23295/unsupported-grant-type-error-when-trying-to-authenticate

RestSharp 不支持的授权类型

RestSharp unsupported grant type

.net

c#

restsharp

access-token

asp.net-web-api