node.js - OAuth2 登录后重定向到前端(在不同的 URL 上)

Question

我正在尝试按如下方式设置我的应用程序:

1. Angular 7 前端，服务于 http://localhost:4200
2. Express 后端，服务于 http://localhost:3500
3. 用于 OAuth2 身份验证的 Passport 库

我正在从服务器端(Express/Node.js)设置 OAuth2 流。单击前端的登录按钮后，请求将发送到服务器，它被重定向到 Google 以请求用户凭据/权限等。

我的回调网址是:http://localhost:3500/auth/callback .

登录成功后，重定向回前端 URL 的好方法是什么，即 http://localhost:4200/ ??由于回调 URL 在服务器端

Answer 1

我最终决定采用以下策略:

Passport 策略设置如下:

/**
 * Route handlers for Google oauth2 authentication. 
 * The first handler initiates the authentication flow. 
 * The second handler receives the response from Google. In case of failure, we will 
 * redirect to a pre-determined configurable route. In case of success, we issue a Json 
 * Web Token, and redirect to a pre-determined, configurable route.
 */

 this.router.get('/google', (req: Request, res: Response, next: NextFunction) => {
      passport.authenticate('google', {
          scope: process.env.GOOGLE_OAUTH2_SCOPES.split(",")
      })(req, res, next);
 });

 this.router.get('/google/callback',
      passport.authenticate('google', { failureRedirect:process.env.AUTH_FAILURE_REDIRECT }), (req, res) => this.jwtAuthService.issueJWTEnhanced(req, res, 'google'));

issueJwtEnhanced 定义如下:

/**
 * Middleware for issuing JWT as part of the authentication flow. 
 * @param req Express HttpRequest Object
 * @param res Express HttpResponse Object
 */
 issueJWTEnhanced(req: any, res: Response, loginMech: string ) {
        this.logger.info('Inside JWT issuing service');
        this.logger.info('UserID: ' + req.user._id);
        jwt.sign({userId: req.user._id, loginMethod: loginMech}, process.env.JWT_SECRET, {expiresIn: '5 min'}, (err, token) => {
            if(err){
                this.logger.error('Error while trying to issue JWT: ' + err);
                this.logger.error(JSON.stringify(err));
                return res.redirect(process.env.AUTH_FAILURE_REDIRECT);
            }else{
                this.logger.info('Successfully issued JWT');
                this.logger.info('JWT Issued: ' + token);
                return res.redirect(process.env.AUTH_SUCCESS_REDIRECT + '/' + token);
            }
        }); 
    }

哪里，

AUTH_SUCCESS_REDIRECT=' http://localhost:4200/login-success 'AUTH_FAILURE_REDIRECT=' http://localhost:4200/login/ '