node.js – Google Oauth提供代码兑换错误

嗨,我正在开发一个用户通过谷歌帐户登录的项目.(localhost)
我已经实施了谷歌注册.
一旦我从我的帐户登录,我收到以下错误.

TokenError: Code was already redeemed.
       at Strategy.oAuth2Strategy.parseErrorResponse (c:\Projects\Internship_rideshare\node_modules\passport-google-oauth\node_modules\passport-oauth\node_modules\passport-oauth2\lib\strategy.js:298:12)
       at Strategy.oAuth2Strategy._createOAuthError (c:\Projects\Internship_rideshare\node_modules\passport-google-oauth\node_modules\passport-oauth\node_modules\passport-oauth2\lib\strategy.js:345:16)
       at c:\Projects\Internship_rideshare\node_modules\passport-google-oauth\node_modules\passport-oauth\node_modules\passport-oauth2\lib\strategy.js:171:43
       at c:\Projects\Internship_rideshare\node_modules\passport-google-oauth\node_modules\passport-oauth\node_modules\passport-oauth2\node_modules\oauth\lib\oauth2.js:176:18
       at passBACkControl (c:\Projects\Internship_rideshare\node_modules\passport-google-oauth\node_modules\passport-oauth\node_modules\passport-oauth2\node_modules\oauth\lib\oauth2.js:123:9)
       at Incomingmessage.<anonymous> (c:\Projects\Internship_rideshare\node_modules\passport-google-oauth\node_modules\passport-oauth\node_modules\passport-oauth2\node_modules\oauth\lib\oauth2.js:142:7)
       at Incomingmessage.emit (events.js:129:20)
       at _stream_readable.js:908:16
       at process._tickCallBACk (node.js:355:11)

我的代码如下(谷歌登录的代码段)： –

passport.use(new GoogleStrategy(google,function(req,accessToken,refreshToken,profile,donE) {
  if (req.user) {
    User.findOne({ google: profile.id },function(err,exisTingUser) {
      if (exisTingUser) {
        console.log('There is already a Google+ account that belongs to you. Sign in with that account or delete it,then link it with your current account.' );
        done(err);
      } else {
        User.findById(req.user.id,user) {
          user.google = profile.id;
          user.tokens.push({ kind: 'google',accessToken: accessToken });
          user.profile.displayName = user.profile.displayName || profile.displayName;
          user.profile.gender = user.profile.gender || profile._json.gender;
            //user.profile.picture = user.profile.picture || 'https://graph.facebook.com/' + profile.id + '/picture?type=large';
          user.save(function(err) {
            console.log('Google Account has been linked.');
            done(err,user);
          });
        });
      }
    });
  } else {
    User.findOne({ google: profile.id },exisTingUser) {
      if (exisTingUser) return done(null,exisTingUser);
      User.findOne({ email: profile._json.email },exisTingEmailUser) {
        if (exisTingEmailUser) {
           console.log('There is already an account using this email address. Sign in to that account and link it with Google manually from Account SetTings.' );
          done(err);
        } else {
          var user = new User();
          user.email = profile._json.email;
          user.google = profile.id;
          user.tokens.push({ kind: 'google',accessToken: accessToken });
          user.profile.displayName = profile.displayName;
          user.profile.gender = profile._json.gender;
            //user.profile.picture = 'https://graph.facebook.com/' + profile.id + '/picture?type=large';
          user.profile.LOCATIOn = (profile._json.LOCATIOn) ? profile._json.LOCATIOn.name : '';
          user.save(function(err) {
            done(err,user);
          });
        }
      });
    });
  }
}));

我被困在上面.请帮帮我……谢谢

router.get('/auth/google/callBACk',passport.authenticate('google',{ failureRedirect: '#/signIn' }),res) {
// absolute path
    res.redirect('http://localhost:8888/#/home');
});