我在 Angular 6 SPA 上使用 msal.js 来处理身份验证,我有一些问题:首先,我找不到一个关于如何处理 lib 错误的明确示例,所以我左右挑选了一些东西,然后我到了到下一个结果:
@Injectable()
export class AuthenticationService {
_clientApplication: Msal.UserAgentApplication;
_clientApplicationPR: Msal.UserAgentApplication;
private _authority: string;
constructor(private apiService: ApiService, private backendRoutes: BackendRoutes) {
this._authority = `https://login.microsoftonline.com/tfp/${environment.tenant}/${environment.signUpSignInPolicy}`;
this._clientApplication =
new Msal.UserAgentApplication(
environment.clientID,
this._authority,
this._authCallback,
{
cacheLocation: 'localStorage',
redirectUri: window.location.origin
});
}
private _authCallback(errorDesc: any, token: any, error: any, tokenType:
any) {
console.log("in call back");
if (token) {
this.addUser();
} else {
// console.log(`${error} - ${errorDesc}`);
if (errorDesc.indexOf("AADB2C90118") > -1) {
//Forgotten password
this._clientApplicationPR = new Msal.UserAgentApplication(
environment.clientID,
`https://login.microsoftonline.com/tfp/${environment.tenant}/${environment.passResetPolicy}`,
this._authCallback,
{
cacheLocation: 'localStorage',
redirectUri: window.location.origin
});
this._clientApplicationPR.loginRedirect(environment.b2cScopes);
} else if (errorDesc.indexOf("AADB2C90077") > -1) {
//Expired Token
this._clientApplication.acquireTokenRedirect(environment.b2cScopes);
}
}
}
getAuthenticationToken(): Promise<string> {
return
this._clientApplication.acquireTokenSilent(environment.b2cScopes)
.then(token => token)
.catch(error => {
return Promise.reject(error);
});
}
}
getAuthenticationToken 函数用于我的 httpinterceptor 来设置不记名令牌。这工作正常,除非我的令牌过期发出下一个错误:
main.c20e047e67b91051727f.js:1 AADB2C90077:用户没有现有会话并且请求提示参数的值为“无”。相关 ID:3a627592-5ab0-4e54-b01d-e4296e4d4002 时间戳:2018-11-27 08:30:32Z |interaction_required
在我尝试处理这种情况时,您可以看到回调检查错误代码内容。问题是,在acquireTokenSilent 失败后从未调用过我的回调......我想知道为什么以及我做错了什么?对于acquireTokenSilent,我猜您可以将错误处理为承诺拒绝。虽然不理想。
其次,回调中的上下文与我的服务不一样,我无法访问“this”,从我读过的内容来看,它被库覆盖了。我对“AADB2C90118忘记密码错误”的临时破解是用适当的权限创建一个新的userAgentAplication,有没有办法在回调中访问我的服务上下文并避免这样做?
编辑我设法使事情顺利进行:“this”在回调中引用了 userAgentApplication 本身,因此您可以执行以下操作,而不是创建新的:
constructor(private apiService: ApiService, private backendRoutes: BackendRoutes) {
this._authority = `https://login.microsoftonline.com/tfp/${environment.tenant}/${environment.signUpSignInPolicy}`;
this._clientApplication =
new Msal.UserAgentApplication(
environment.clientID,
this._authority,
this.msalHandler,
{
cacheLocation: 'localStorage',
redirectUri: window.location.origin
});
}
msalHandler(errorDesc: any, token: any, error: any, tokenType: any) {
let userAgent: Msal.UserAgentApplication = <any>(this);
if (errorDesc.indexOf("AADB2C90118") > -1) {
//Forgotten password
userAgent.authority = `https://login.microsoftonline.com/tfp/${environment.tenant}/${environment.passResetPolicy}`;
userAgent.loginRedirect(environment.b2cScopes);
} else if (errorDesc.indexOf("AADB2C90077") > -1) {
//Expired Token
this.logout();
}
}
或将此绑定到您的回调:
this._clientApplication =
new Msal.UserAgentApplication(
environment.clientID,
this._authority,
this.msalHandler.bind(this),
{
cacheLocation: 'localStorage',
redirectUri: window.location.origin
});
和我的拦截器:
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
return from(this.authenticationService.getAuthenticationToken()
.then(token => {
return req.clone({
setHeaders: {
Authorization: `Bearer ${token}`
}
});
})
.catch(err => {
this.authenticationService.msalHandler(err,null,null,null);
return req;
}))
.switchMap(req => {
return next.handle(req);
});
}
对于信息,我使用最新的“msal”:“^0.2.3”、“typescript”:“~2.7.2”、“@angular/core”:“^6.0.3”。