Node与Express开发（第2版）

216

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第

18

章

})

.then(user => done(null, user))

.catch(err => done(err, null))

})

.catch(err => {

console.log('whoops, there was an error: ', err.message)

if(err) return done(err, null);

})

}))

并在

registerRoutes

方法里增加以下代码：

app.get('/auth/google', (req, res, next) => {

if(req.query.redirect) req.session.authRedirect = req.query.redirect

passport.authenticate('google', { scope: ['profile'] })(req, res, next)

})

app.get('/auth/google/callback', passport.authenticate('google',

{ failureRedirect: options.failureRedirect }),

(req, res) => {

// 只有认证成功之后才会到达这里

const redirect = req.session.authRedirect

if(redirect) delete req.session.authRedirect ...