获取 "error"："unsupported_grant_type" 尝试通过邮递员调用 OWIN OAuth 安全 Web Api 获取 JWT

Question

我已按照 this article 实施 OAuth 授权服务器。但是，当我使用 post man 获取令牌时，响应中出现错误：

"error": "unsupported_grant_type"

我在某处读到 Postman 中的数据需要使用 Content-type:application/x-www-form-urlencoded 编辑 post。我已经在 Postman 中准备好所需的设置：

然而我的 headers 是这样的：

这是我的代码

public class CustomOAuthProvider : OAuthAuthorizationServerProvider
{
    public override Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context)
    {
        context.Validated();
        return Task.FromResult<object>(null);
    }

    public override Task MatchEndpoint(OAuthMatchEndpointContext context)
    {
        if (context.OwinContext.Request.Method == "OPTIONS" && context.IsTokenEndpoint)
        {
            context.OwinContext.Response.Headers.Add("Access-Control-Allow-Methods", new[] { "POST" });
            context.OwinContext.Response.Headers.Add("Access-Control-Allow-Headers", new[] { "accept", "authorization", "content-type" });
            context.OwinContext.Response.StatusCode = 200;
            context.RequestCompleted();
            return Task.FromResult<object>(null);
        }
        return base.MatchEndpoint(context);       
    }

    public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
    {
        string allowedOrigin = "*";

        context.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { allowedOrigin });
        context.OwinContext.Response.Headers.Add("Access-Control-Allow-Headers", new[] { "Content-Type" });

        Models.TheUser user = new Models.TheUser();
        user.UserName = context.UserName;
        user.FirstName = "Sample first name";
        user.LastName = "Dummy Last name";

        ClaimsIdentity identity = new ClaimsIdentity("JWT");

        identity.AddClaim(new Claim(ClaimTypes.Name, context.UserName));
        foreach (string claim in user.Claims)
        {
            identity.AddClaim(new Claim("Claim", claim));    
        }

        var ticket = new AuthenticationTicket(identity, null);
        context.Validated(ticket);
    }
}

public class CustomJwtFormat : ISecureDataFormat<AuthenticationTicket>
{
    private readonly string _issuer = string.Empty;

    public CustomJwtFormat(string issuer)
    {
        _issuer = issuer;
    }

    public string Protect(AuthenticationTicket data)
    {
        string audienceId = ConfigurationManager.AppSettings["AudienceId"];
        string symmetricKeyAsBase64 = ConfigurationManager.AppSettings["AudienceSecret"];
        var keyByteArray = TextEncodings.Base64Url.Decode(symmetricKeyAsBase64);
        var signingKey = new HmacSigningCredentials(keyByteArray);
        var issued = data.Properties.IssuedUtc;
        var expires = data.Properties.ExpiresUtc;
        var token = new JwtSecurityToken(_issuer, audienceId, data.Identity.Claims, issued.Value.UtcDateTime, expires.Value.UtcDateTime, signingKey);
        var handler = new JwtSecurityTokenHandler();
        var jwt = handler.WriteToken(token);
        return jwt;
    }

    public AuthenticationTicket Unprotect(string protectedText)
    {
        throw new NotImplementedException();
    }
}

在上面的 CustomJWTFormat class 中，只有构造函数中的断点被命中。在 CustomOauth class 中，永远不会命中 GrantResourceOwnerCredentials 方法中的断点。其他人做。

初创公司class：

public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);

        HttpConfiguration config = new HttpConfiguration();
        WebApiConfig.Register(config);

        ConfigureOAuthTokenGeneration(app);
        ConfigureOAuthTokenConsumption(app);

        app.UseWebApi(config);
    }

    private void ConfigureOAuthTokenGeneration(IAppBuilder app)
    {
        var OAuthServerOptions = new OAuthAuthorizationServerOptions()
        {
            //For Dev enviroment only (on production should be AllowInsecureHttp = false)
            AllowInsecureHttp = true,
            TokenEndpointPath = new PathString("/oauth/token"),
            AccessTokenExpireTimeSpan = TimeSpan.FromDays(1),
            Provider = new CustomOAuthProvider(),
            AccessTokenFormat = new CustomJwtFormat(ConfigurationManager.AppSettings["Issuer"])
        };

        // OAuth 2.0 Bearer Access Token Generation
        app.UseOAuthAuthorizationServer(OAuthServerOptions);
    }

    private void ConfigureOAuthTokenConsumption(IAppBuilder app)
    {
        string issuer = ConfigurationManager.AppSettings["Issuer"]; 
        string audienceId = ConfigurationManager.AppSettings["AudienceId"];
        byte[] audienceSecret = TextEncodings.Base64Url.Decode(ConfigurationManager.AppSettings["AudienceSecret"]);

        // Api controllers with an [Authorize] attribute will be validated with JWT
        app.UseJwtBearerAuthentication(
            new JwtBearerAuthenticationOptions
            {
                AuthenticationMode = AuthenticationMode.Active,
                AllowedAudiences = new[] { audienceId },
                IssuerSecurityTokenProviders = new IIssuerSecurityTokenProvider[]
                {
                    new SymmetricKeyIssuerSecurityTokenProvider(issuer, audienceSecret)
                }
            });
    }
}

我是否需要在网络 api 代码的其他地方设置 Content-type:application/x-www-form-urlencoded？有什么问题吗？请帮忙。

Answer 1

回复有点晚了 - 但万一以后有人遇到这个问题...

从上面的屏幕截图来看 - 似乎您正在将 url 数据（用户名、密码、grant_type）添加到 header 而不是 body元素.

单击 body 选项卡，然后单击 select "x-www-form-urlencoded" 单选按钮，下面应该有一个 key-value 列表，您可以在其中输入请求数据

Answer 2

尝试将其添加到您的负载中

grant_type=password&username=pippo&password=pluto

Answer 3

使用 Postman，select 正文选项卡并选择原始选项并键入以下内容：

grant_type=password&username=yourusername&password=yourpassword

Answer 4

注意 URL：localhost:55828/token（不是 localhost:55828/API/token）
记下请求数据。它不是 json 格式，它只是没有双引号的纯数据。 userName=xxx@gmail.com&password=Test123$&grant_type=password
注意内容类型。内容类型：'application/x-www-form-urlencoded'（不是内容类型：'application/json'）

当您使用JavaScript进行post请求时，您可以使用如下：

$http.post("localhost:55828/token", 
  "userName=" + encodeURIComponent(email) +
    "&password=" + encodeURIComponent(password) +
    "&grant_type=password",
  {headers: { 'Content-Type': 'application/x-www-form-urlencoded' }}
).success(function (data) {//...

请参阅下面来自 Postman 的屏幕截图：

Answer 5

使用grant_type={您的密码}

Answer 6

如果您使用 AngularJS，您需要将正文参数作为字符串传递：

    factory.getToken = function(person_username) {
    console.log('Getting DI Token');
    var url = diUrl + "/token";

    return $http({
        method: 'POST',
        url: url,
        data: 'grant_type=password&username=myuser@user.com&password=mypass',
        responseType:'json',
        headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
    });
};

Answer 7

老问题，但是对于 angular 6，这需要在您使用 HttpClient 时完成我在这里公开公开令牌数据，但如果通过只读属性访问它会很好。

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable, of } from 'rxjs';
import { delay, tap } from 'rxjs/operators';
import { Router } from '@angular/router';


@Injectable()
export class AuthService {
    isLoggedIn: boolean = false;
    url = "token";

    tokenData = {};
    username = "";
    AccessToken = "";

    constructor(private http: HttpClient, private router: Router) { }

    login(username: string, password: string): Observable<object> {
        let model = "username=" + username + "&password=" + password + "&grant_type=" + "password";

        return this.http.post(this.url, model).pipe(
            tap(
                data => {
                    console.log('Log In succesful')
                    //console.log(response);
                    this.isLoggedIn = true;
                    this.tokenData = data;
                    this.username = data["username"];
                    this.AccessToken = data["access_token"];
                    console.log(this.tokenData);
                    return true;

                },
                error => {
                    console.log(error);
                    return false;

                }
            )
        );
    }
}

Answer 8

我也遇到了这个错误，最终原因是调用错误 url。如果其他人碰巧混合 urls 并收到此错误，我将把这个答案留在这里。我花了几个小时才意识到我错了 URL.

我遇到的错误（HTTP 代码 400）：

{
    "error": "unsupported_grant_type",
    "error_description": "grant type not supported"
}

我正在打电话：

https://MY_INSTANCE.lightning.force.com

而正确的 URL 应该是：

https://MY_INSTANCE.cs110.my.salesforce.com

Answer 9

此 'unsupported_grant_type' 错误的另一个常见原因是调用 API 作为 GET 而不是 POST。

获取 "error"："unsupported_grant_type" 尝试通过邮递员调用 OWIN OAuth 安全 Web Api 获取 JWT

Getting "error": "unsupported_grant_type" when trying to get a JWT by calling an OWIN OAuth secured Web Api via Postman

c#

oauth-2.0

asp.net-web-api

owin