Question

当我尝试通过邮递员通过路由添加新用户时，使用的语法如下：

  {
    "name":"Test Name",
    "email":"testmail@gmai.com",
    "username":"test123",
    "password":"3214"
}

控制台响应我一个错误：“非法参数：未定义，字符串” 邮递员说“无法得到任何回应”

我的代码示例（user.js）：

    const UserSchema = mongoose.Schema({
        name: {
            type: String
        },
        email: {
            type: String,
            required: true
        },
        username: {
            type: String,
            required: true
        },
        password: {
            type: String,
            required: true
        }
    });

    const User = module.exports = mongoose.model('User', UserSchema);

module.exports.addUser = function(newUser, callback){
    bcrypt.genSalt(10, (err, salt) => {
        bcrypt.hash(newUser.password, salt, (err, hash) => {
            if(err) throw err;
            newUser.password = hash;
            newUser.save(callback);
        });
    });
};

api.js：

router.post('/register', (req, res, next) => {
    let newUser = new User({
        name: req.body.name,
        email: req.body.email,
        username: req.body.username,
        password: req.body.password
    });

    User.addUser(newUser, (err, user) => {
        if(err){
            res.json({success: false, msg:'Failed to register user'});
        } else {
            res.json({success: true, msg:'User registered'});
        }
    });
});

我想使用bcrypt，如何解决？

编辑：整个错误日志：

    C:\Users\ajaks\Desktop\meanproject\server\models\user.js:38
            if(err) throw err;
                    ^

Error: Illegal arguments: undefined, string
    at _async (C:\Users\ajaks\Desktop\meanproject\node_modules\bcryptjs\dist\bcrypt.js:214:46)
    at Object.bcrypt.hash (C:\Users\ajaks\Desktop\meanproject\node_modules\bcryptjs\dist\bcrypt.js:220:13)
    at bcrypt.genSalt (C:\Users\ajaks\Desktop\meanproject\server\models\user.js:37:16)
    at Immediate._onImmediate (C:\Users\ajaks\Desktop\meanproject\node_modules\bcryptjs\dist\bcrypt.js:153:21)
    at runCallback (timers.js:810:20)
    at tryOnImmediate (timers.js:768:5)
    at processImmediate [as _immediateCallback] (timers.js:745:5)
[nodemon] app crashed - waiting for file changes before starting...

Answer 1

创建addUser函数时出现问题。要在猫鼬模型内部创建自定义函数，需要使用statics

const UserSchema = mongoose.Schema({
  name: {
    type: String
  },
  email: {
    type: String,
    required: true
  },
  username: {
    type: String,
    required: true
  },
  password: {
    type: String,
    required: true
  }
});

UserSchema.statics.addUser = function(newUser, callback) {
  bcrypt.genSalt(10, (err, salt) => {
    bcrypt.hash(newUser.password, salt, (err, hash) => {
      if (err) throw err;
      newUser.password = hash;
      newUser.save(callback);
    });
  });
};

module.exports = mongoose.model('User', UserSchema);

现在它可以工作了。有关更多信息，如何在猫鼬模型内部创建自定义函数，请参考此 https://mongoosejs.com/docs/guide.html#statics

您还可以在module.exports中了解nodejs的工作方式 https://www.sitepoint.com/understanding-module-exports-exports-node-js/

非法参数bcrypt js-mongodb和node

1 个答案: