在OAuth2登录后重定向到前端(在不同的URL上)

Question

我正在尝试按以下方式设置我的应用程序：

1. 角7前部，http://localhost:4200说
2. 快速后端，服务于，比如http://localhost:3500
3. 用于OAuth2身份验证的护照库

我正在从服务器端设置OAuth2流(Express / Node.js)。在从前端单击Login按钮时，将请求发送到服务器，服务器将被重定向到Google，以请求用户凭据/权限等。

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

张贴成功的登录，什么是一个好的方式重定向回前端网址，即http://localhost:4200/ ?？因为回调URL位于服务器端

Answer 1

最后，我决定采取以下策略：

护照策略设置如下：

/**
 * 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的定义如下：

/**
 * 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/’