獲取「錯誤」：「未知的身份驗證策略」jwt \「」

Question

我正在使用Express，Mongoose，Passport和JWT實施授權功能。

我可以註冊一個用戶。我能夠驗證並生成JWT，我可以在JWT網站上解析JWT，但出於某種原因，我收到了未知的驗證策略錯誤消息。

我有一個Plunker實例奠定了我所有的代碼塊在：

https://plnkr.co/edit/ZNjQwcZ4rMymzBXNy5nX?p=catalogue

這裏是我的passport.js文件，其中包括我的策略：

var JwtStrategy = require('passport-jwt').Strategy; 

// load up the user model 
var User = require('../models/user'); 
var config = require('../config/database'); // get db config file 

module.exports = function(passport) { 
    var opts = {}; 
    opts.secretOrKey = config.secret; 
    passport.use(new JwtStrategy(opts, function(jwt_payload, done) { 
    User.findOne({id: jwt_payload.id}, function(err, user) { 
      if (err) { 
       return done(err, false); 
      } 
      if (user) { 
       done(null, user); 
      } else { 
       done(null, false); 
      } 
     }); 
    })); 
}; 

這裏是我的authentication.js文件的樣子：

var express = require('express'); 
var router = express.Router(); 
var jwt = require('jwt-simple'); 
var config = require('../config/database'); 

var User = require('../models/user'); 



router.route('/') 
.post(function(req, res) { 

    User.findOne({ 
    name: req.body.name 
    }, function(err, user) { 
    if (err) 
     res.send(err); 

    if (!user) { 
     res.send({success: false, msg: 'Authentication failed. User not found.'}); 
    } else { 
     // check if password matches 
     user.comparePassword(req.body.password, function (err, isMatch) { 
     if (isMatch && !err) { 
      // if user is found and password is right create a token 
      var token = jwt.encode(user, config.secret); 
      // return the information including token as JSON 
      res.json({success: true, token: 'JWT ' + token}); 
     } else { 
      res.send({success: false, msg: 'Authentication failed. Wrong password.'}); 
     } 
     }); 
    } 
    }); 
}); 


module.exports = router; 

這裏是我打電話是產生錯誤的端點：

var express = require('express'); 
var router = express.Router(); 
var jwt = require('jwt-simple'); 
var config = require('../config/database'); 
var passport = require('passport'); 

var User = require('../models/user'); 

router.route('/') 

.get(passport.authenticate('jwt', { session: false}), function(req, res) { 
    var token = getToken(req.headers); 
    if (token) { 
    var decoded = jwt.decode(token, config.secret); 
    User.findOne({ 
     name: decoded.name 
    }, function(err, user) { 
     if (err) throw err; 

     if (!user) { 
      return res.status(403).send({success: false, msg: 'Authentication failed. User not found.'}); 
     } else { 
      res.json({success: true, msg: 'Welcome in the member area ' + user.name + '!'}); 
     } 
    }); 
    } else { 
    return res.status(403).send({success: false, msg: 'No token provided.'}); 
    } 
}); 

getToken = function (headers) { 
    if (headers && headers.authorization) { 
    var parted = headers.authorization.split(' '); 
    if (parted.length === 2) { 
     return parted[1]; 
    } else { 
     return null; 
    } 
    } else { 
    return null; 
    } 
}; 

module.exports = router; 

Answer 1

你忘了，包括在應用自己的passport.js模塊。這導致nodejs找不到最終導致您看到的錯誤的JWTStrategy的定義。

在您的端點文件中，只包含本地passport.js文件：

var express = require('express'); 
var router = express.Router(); 
var jwt = require('jwt-simple'); 
var config = require('../config/database'); 
var passport = require('passport'); 

require('./passport')(passport) // as strategy in ./passport.js needs passport object 

var User = require('../models/user'); 

router.route('/') 
.get(passport.authenticate('jwt', { session: false}), function(req, res) { 
    var token = getToken(req.headers); 
... 

Answer 2

如果你看一下你的護照配置文件（passport.js），你會看到

module.exports = function (passport) { 
    //bla bla bla 
} 

如您所見，需要passport instance

現在怎麼樣pass this instance到您的passport.js文件

簡單

var passport = require('passport');// create a passport instance 
var myPassportService = require('../config/passport')(passport);// pass it into passport.js file 

希望這可以幫助你