我尝试使用OpenIdDict创建一个使用凭据流的.NET Core Web API的Angular2 SPA。在为这个问题创建一个repro解决方案时，我还在自述文件中详细说明了我的所有步骤，所以希望这篇文章对像我这样的新手有用。请在这些存储库中找到完整的repro解决方案：
服务器端（.NET Core + OpenIdDict），包含构建您自己的详细说明：https://github.com/Myrmex/repro-oidang
客户端（Angular2）：https://github.com/Myrmex/repro-angoid
至于服务器端，我按照OpenIdDict提供的关于此流程的示例（https://github.com/openiddict/openiddict-samples/blob/master/samples/PasswordFlow）。以下是Startup中最相关的位：
public void ConfigureServices(IServiceCollection services)
{
services.AddCors();
services.AddEntityFrameworkSqlServer()
.AddDbContext<CatalogContext>(options =>
options.UseSqlServer(Configuration.GetConnectionString("Catalog")))
.AddDbContext<ApplicationDbContext>(options =>
options.UseSqlServer(Configuration.GetConnectionString("Catalog")));
services.AddIdentity<ApplicationUser, ApplicationRole>()
.AddEntityFrameworkStores<ApplicationDbContext>()
.AddDefaultTokenProviders();
services.AddOpenIddict<ApplicationDbContext>()
.DisableHttpsRequirement()
.EnableTokenEndpoint("/connect/token")
.EnableLogoutEndpoint("/connect/logout")
.EnableUserinfoEndpoint("/connect/userinfo")
.AllowPasswordFlow()
.AllowRefreshTokenFlow()
.AddEphemeralSigningKey();
services.AddMvc()
.AddJsonOptions(options =>
{
options.SerializerSettings.ContractResolver =
new Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver();
});
// add my services
// ...
services.AddTransient<IDatabaseInitializer, DatabaseInitializer>();
services.AddSwaggerGen();
}
public void Configure(IApplicationBuilder app, IHostingEnvironment env,
ILoggerFactory loggerFactory,
IDatabaseInitializer databaseInitializer)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();
loggerFactory.AddNLog();
app.UseDefaultFiles();
app.UseStaticFiles();
app.UseCors(builder =>
builder.WithOrigins("http://localhost:4200")
.AllowAnyHeader()
.AllowAnyMethod());
app.UseOAuthValidation();
app.UseOpenIddict();
app.UseMvc();
databaseInitializer.Seed().GetAwaiter().GetResult();
env.ConfigureNLog("nlog.config");
app.UseSwagger();
app.UseSwaggerUi();
}
如果我使用Fiddler测试它，它可以正常工作：令牌请求获取令牌，然后我可以将其包含在Authorization标头中以访问任何受保护的API，它会按预期返回JSON数据。
示例令牌请求：
POST http://localhost:51346/connect/token
Content-Type: application/x-www-form-urlencoded
grant_type=password&scope=offline_access profile email roles&resource=http://localhost:4200&username=...&password=...
示例资源请求：
GET http://localhost:51346/api/values
Content-Type: application/json
Authorization: Bearer ...received token here...
然而，在客户端，每当我尝试相同的请求时，我都会收到401错误;看着日志，似乎Angular2 Http服务根本没有发送所需的标头，因为我收到错误Authentication was skipped because no bearer token was received（参见下面的更多日志条目）。
检索某些资源的服务是这样的：
import { Injectable } from '@angular/core';
import { Http, Response } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import { SettingsService } from './settings.service';
import { AuthenticationService } from './authentication.service';
export interface ICategory {
id: string;
name: string;
}
@Injectable()
export class CategoryService {
constructor(
private _http: Http,
private _settings: SettingsService,
private _authService: AuthenticationService) { }
public getCategories(): Observable<ICategory[]> {
let url = this._settings.apiBaseUrl + 'categories';
let options = {
headers: this._authService.createAuthHeaders({
'Content-Type': 'application/json'
})
};
return this._http.get(url, options).map((res: Response) => res.json())
.catch((error: any) => Observable.throw(error.json().error || 'server error'));
}
}
帮助器createAuthHeaders只获取表示Header（https://angular.io/docs/ts/latest/api/http/index/Headers-class.html）条目的某些属性，检索存储的令牌，将Authentication条目附加到标头，然后返回它：
public createAuthHeaders(headers?: { [name: string]: any }): Headers {
let auth = new Headers();
if (headers) {
for (let key in headers) {
if (headers.hasOwnProperty(key)) {
auth.append(key, headers[key]);
}
}
}
let tokenResult = this._localStorage.retrieve(this._settings.tokenStorageKey, true);
if (tokenResult) {
auth.append('Authentication', 'Bearer ' + tokenResult.access_token);
}
return auth;
}
然而，当尝试将响应映射到JSON对象（Unexpected end of JSON input）时，此请求获得401响应然后Angular抛出。
我必须补充一点，一旦客户端获取令牌，它就会发出另一个请求，以检索用户信息，这样可以正常工作;这是它（见get user info之后的代码）：
public login(name: string, password: string) {
let body = 'grant_type=password&scope=offline_access profile email roles' +
`&resource=${this._settings.appBaseUrl}&username=${name}&password=${password}`;
this._http.post(
this._settings.authBaseUrl + `token`,
body,
{
headers: new Headers({
'Content-Type': 'application/x-www-form-urlencoded'
})
}).map(res => res.json())
.subscribe(
(token: ITokenResult) => {
if (token.expires_in) {
token.expires_on = this.calculateExpirationDate(+token.expires_in);
}
this._localStorage.store(this._settings.tokenStorageKey, token, true);
// get user info
this._http.get(this._settings.authBaseUrl + 'userinfo', {
headers: new Headers({
'Content-Type': 'application/json',
'Authorization': 'Bearer ' + token.access_token
})
}).map(res => res.json())
.subscribe((info: IUserInfoResult) => {
let user: IUser = {
id: info.name,
email: info.email,
name: info.name,
firstName: info.given_name,
lastName: info.family_name,
role: info.role,
verified: info.email_verified
};
this._localStorage.store(this._settings.userStorageKey, user, true);
this.userChanged.emit(user);
}, error => {
console.log(error);
});
},
error => {
console.log(error);
});
}
然而，使用上述服务构建的任何其他请求都会失败。使用引用函数构建的标题有什么问题？
以下是服务器端的一些日志条目：
2016-11-18 20:41:31.9815|0|AspNet.Security.OAuth.Validation.OAuthValidationMiddleware|DEBUG| Authentication was skipped because no bearer token was received.
2016-11-18 20:41:31.9815|0|OpenIddict.Infrastructure.OpenIddictProvider|INFO| The token request validation process was skipped because the client_id parameter was missing or empty.
2016-11-18 20:41:32.0715|0|AspNet.Security.OpenIdConnect.Server.OpenIdConnectServerMiddleware|INFO| No explicit audience was associated with the access token.
2016-11-18 20:41:32.1165|10|AspNet.Security.OpenIdConnect.Server.OpenIdConnectServerMiddleware|INFO| AuthenticationScheme: ASOS signed in.
2016-11-18 20:41:32.1635|3|AspNet.Security.OAuth.Validation.OAuthValidationMiddleware|INFO| HttpContext.User merged via AutomaticAuthentication from authenticationScheme: Bearer.
2016-11-18 20:41:57.7430|0|AspNet.Security.OAuth.Validation.OAuthValidationMiddleware|DEBUG| Authentication was skipped because no bearer token was received.
2016-11-18 20:41:57.7430|0|AspNet.Security.OAuth.Validation.OAuthValidationMiddleware|DEBUG| Authentication was skipped because no bearer token was received.
2016-11-18 20:41:57.8820|12|AspNet.Security.OAuth.Validation.OAuthValidationMiddleware|INFO| AuthenticationScheme: Bearer was challenged.
2016-11-18 20:41:57.9305|12|AspNet.Security.OAuth.Validation.OAuthValidationMiddleware|INFO| AuthenticationScheme: Bearer was challenged.
2016-11-18 20:41:57.9465|0|AspNet.Security.OAuth.Validation.OAuthValidationMiddleware|DEBUG| Authentication was skipped because no bearer token was received.
2016-11-18 20:41:57.9925|12|AspNet.Security.OAuth.Validation.OAuthValidationMiddleware|INFO| AuthenticationScheme: Bearer was challenged.
答案 0 :(得分：4)
您的不记名令牌使用不正确。
auth.append('Authentication', 'Bearer ' + tokenResult.access_token) // wrong
auth.append('Authorization', 'Bearer ' + tokenResult.access_token) // right
标头必须为Authorization。见https://tools.ietf.org/html/rfc6750#section-2.1