我在 MongoDB 中收到错误“错误：用户验证失败”

苛刻的米什拉

尝试使用该POST方法postman注册用户后出现错误。我Schema为register路线创建了一个简单的。

错误：

Error in register: Error: User validation failed: password: Cast to string failed for value "Promise { <pending> }" (type Promise) at path "password"
    at ValidationError.inspect (/Users/*****/authSystem/node_modules/mongoose/lib/error/validation.js:48:26)
    at formatValue (node:internal/util/inspect:782:19)
    at inspect (node:internal/util/inspect:347:10)
    at formatWithOptionsInternal (node:internal/util/inspect:2167:40)
    at formatWithOptions (node:internal/util/inspect:2029:10)
    at console.value (node:internal/console/constructor:324:14)
    at console.log (node:internal/console/constructor:360:61)
    at /Users/harshmishra/Desktop/BackendApp/authSystem/app.js:46:17
    at processTicksAndRejections (node:internal/process/task_queues:96:5) {

  errors: {
    password: CastError: Cast to string failed for value "Promise { <pending> }" (type Promise) at path "password"
        at SchemaString.cast (/Users/*****/authSystem/node_modules/mongoose/lib/schema/string.js:600:11)
        at SchemaString.SchemaType.applySetters (/Users/*****/authSystem/node_modules/mongoose/lib/schematype.js:1189:12)
        at model.$set (/Users/***/authSystem/node_modules/mongoose/lib/document.js:1409:20)
        at model.$set (/Users/*****/authSystem/node_modules/mongoose/lib/document.js:1137:16)
        at model.Document (/Users/****/authSystem/node_modules/mongoose/lib/document.js:162:12)
        at model.Model (/Users/****/authSystem/node_modules/mongoose/lib/model.js:115:12)
        at new model (/Users/*****/authSystem/node_modules/mongoose/lib/model.js:4825:15)
        at /Users*****/authSystem/node_modules/mongoose/lib/model.js:3132:22
        at /Users/*****/authSystem/node_modules/mongoose/lib/model.js:3168:7
        at Array.forEach (<anonymous>) {
      stringValue: '"Promise { <pending> }"',
      messageFormat: undefined,
      kind: 'string',
      value: [Promise],
      path: 'password',
      reason: null,
      valueType: 'Promise'
    }
  },
  _message: 'User validation failed'
}

架构：

const userSchema = new mongoose.Schema(
  {
    firstName: {
      type: String,
      default: null,
    },
    lastName: {
      type: String,
      default: null,
    },
    email: {
      type: String,
      unique: true,
    },
    password: {
      type: String,
    },
    token: {
      type: String,
    },
  },
);

module.exports = mongoose.model('User', userSchema)

/登记：

app.post("/register", async(req, res) => {
    try {
        const { firstName, lastName, email, password } = req.body;
        if (!(firstName && lastName && email && password)) {
         return res.status(400).send("All fields are required");
        }
        const existingUser =User.findOne({ email });

        if (existingUser) {
          return res.status(401).send("User already exist");
        }
        const myEncrpytedPass = await bcryptjs.hash(password, 10);
        const user = await User.create({
          firstName,
          lastName,
          email: email.toLowerCase(),
          password: myEncrpytedPass,
        });
        const token = await jwt.sign(
          {
            user_id: user._id,
            email,
          },
          process.env.SECRET_KEY,
          {
            expiresIn: "4h",
          }
        );
        user.token = token;
      return res.status(201).json(user);
    } catch (error) {
        console.log("Error in register:",error)
   }
})

我无法弄清楚我在这里做错了什么？正如我遵循猫鼬的文档，但我仍然收到错误。

我应该在这里做些什么改变？

氖钠

您需要更改两件事：

第一的

尝试await在bcryptjs.hash(). 看起来该函数返回了一个 Promise。

const myEncrpytedPass = await bcryptjs.hash(password, 10);

第二

在return每个res.send.

例如，如果用户存在，您将发送 this res.send(401).send("User already exist")，但由于您没有添加return，功能将继续，并会到达下一个res.status(201).json(user)响应。这将引发错误，Cannot set headers after they are sent to the client因为您已经将响应发送给用户。

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