無法讀取未定義的屬性“userid”：TypeScript-有解無憂

我會盡量簡短。我已經使用本指南在我的專案中使用 MongoDB、NodeJS、Express、Mongoose：https : //github.com/joeythelantern/Typescript-Quickstart-Projects/tree/main/typescript-mongoose-quickstart

當我嘗試使用 POST 添加用戶時（使用 Postman >> 將所有引數添加為 json），它會拋出“標題”錯誤。我對 TypeScript 還很陌生，幾天來一直試圖找到答案，因此尋求幫助。

先感謝您。

整個錯誤：

TypeError: Cannot read property 'userid' of undefined
at Object.createUser (G:\Projects\React\first\src\Controllers\user.ts:9:17)
at Layer.handle [as handle_request] (G:\Projects\React\first\node_modules\express\lib\router\layer.js:95:5)
at next (G:\Projects\React\first\node_modules\express\lib\router\route.js:137:13)
at Route.dispatch (G:\Projects\React\first\node_modules\express\lib\router\route.js:112:3)
at Layer.handle [as handle_request] (G:\Projects\React\first\node_modules\express\lib\router\layer.js:95:5)
at G:\Projects\React\first\node_modules\express\lib\router\index.js:281:22
at Function.process_params (G:\Projects\React\first\node_modules\express\lib\router\index.js:335:12)
at next (G:\Projects\React\first\node_modules\express\lib\router\index.js:275:10)
at Function.handle (G:\Projects\React\first\node_modules\express\lib\router\index.js:174:3)
at router (G:\Projects\React\first\node_modules\express\lib\router\index.js:47:12)

編輯：錯誤指定來自控制器的用戶 ID。

 let { userid, email, password, fname, lname, restrict } = req.body;

控制器：

const createUser = (req: Request, res: Response, next: NextFunction) => {
let { userid, email, password, fname, lname, restrict } = req.body;

const user = new User({
    _id: new mongoose.Types.ObjectId(),
    userid,
    email,
    password,
    fname,
    lname,
    restrict
});

return user
    .save()
    .then((result) => {
        return res.status(201).json({
            user: result
        });
    })
    .catch((error) => {
        return res.status(500).json({
            message: error.message,
            error
        });
    }); 
};

路線：

const router = express.Router();

router.post('/create/user', controller.createUser);
router.get('/get/users', controller.getAllUsers);

export default router;

模型：

const UserSchema: Schema = new Schema(
{
    userid: { type: Number, required: true },
    email: { type: String, required: true },
    password: { type: String, required: true },
    fname: { type: String, required: true },
    lname: { type: String, required: true },
    restrict: { type: Number, required: true },
    organs: [
        {
            orgid: { type: Number, required: false },
            empnumber: { type: Number, required: false },
            lvl: { type: Number, required: false }
        }
    ]
},
{
    timestamps: true
}
);

export default mongoose.model<IUser>('User', UserSchema);

uj5u.com熱心網友回復：

問題不在于這些代碼中的任何一個，而是在服務器檔案中。

老的

express.json();
express.urlencoded({ extended: false });

使固定

router.use(express.json());
router.use(express.urlencoded({ extended: false }));

轉載請註明出處，本文鏈接：https://www.uj5u.com/qukuanlian/333163.html

標籤：节点.js 打字稿 MongoDB 表达猫鼬

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