While trying to save data from server side into MySql database, throws UnhandledPromiseRejectionWarning: TypeError:

Question

在服务器端使用 Express 并使用 Axios 发送资源调用。在尝试将数据保存到 MySql 数据库时，我在控制台中遇到以下错误：使用 sequelize.js 进行 model/schema 创建。

错误：

(node:23364) UnhandledPromiseRejectionWarning: TypeError: this.build(...).save is not a function
    at Function.create (C:\Main\Work\devchoice\node_modules\sequelize\lib\model.js:2228:8)
    at CsvParser.<anonymous> (C:\Main\Work\devchoice\src\server.js:289:60)
    at CsvParser.emit (events.js:315:20)
    at endReadableNT (_stream_readable.js:1220:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21)
(node:23364) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function
without a catch block, or by rejecting a promise which was not handled with .catch()

server.js

const manageNomineesSchema = require('./server/models/managenominees');
const ManageNomineesModel  = manageNomineesSchema(sequelize, DataTypes);

    app.post('/service/managenominees', upload.single('file'), async (req, res, next) => {
      try {
        if(req.file){
          let filePath = req.file.path;
          fs.createReadStream(filePath)
              .pipe(csv())
              .on('data', (data) => results.push(data))
              .on('end', async () => {
                console.log(results);
                let manageNominees = await ManageNomineesModel.create(results);
                //res.status(200).send(manageNominees);
                res.status(200).json({ message: "Nominees inserted successfully !"});
              });
          }
    
      } catch (e) {
        res.status(500).json({ fail: e.message });
      }
    });

Answer 1

.create 将对象作为参数来创建 1 个实例，但是，您传递的是对象数组。

如果您想插入数组中的所有内容，请使用 .bulkCreate。

参考：https://sequelize.org/master/class/lib/model.js~Model.html#static-method-bulkCreate

While trying to save data from server side into MySql database, throws UnhandledPromiseRejectionWarning: TypeError:

While trying to save data from server side into MySql database, throws UnhandledPromiseRejectionWarning: TypeError:

express

sequelize.js