一站式上传多个大型json文件到NodeJS

Question

I am trying to upload multiple large size JSON files from React-native to node js.

The files are being uploaded unless the file in larger in size, in which case, it does not upload in one try.

I suspect that:
Since the upload code is in a for loop the code is starting the upload but not waiting for the file to upload and starting to upload the next file

Is there any way to ensure that each file gets uploaded in one go?

syncFunction() {
  var RNFS = require('react-native-fs');
  var path = RNFS.DocumentDirectoryPath + '/toBeSynced';
  RNFS.readDir(path)
  .then((success) => {
    for (let i = 0; i < success.length; i++) {
      var fileName = success[i].name
      var filePath = success[i].path
      var uploadUrl = 'http://192.168.1.15:3333/SurveyJsonFiles/GetFiles/'

      if (Platform.OS === 'android') {
        filePath = filePath.replace("file://", "")
      } else if (Platform.OS === 'ios') {
        filePath = filePath
      }
      const data = new FormData();
      data.append("files", {
        uri: filePath,
        type: 'multipart/form-data',
        name: fileName,
      });

      const config = {
        method: 'POST',
        headers: {
          'Accept': 'application/json',
        },
        body: data,
      };

      fetch(uploadUrl, config)
      .then((checkStatusAndGetJSONResponse) => {
        console.log(checkStatusAndGetJSONResponse);
        this.moveFile(filePath, fileName)
      }).catch((err) => {
        console.log(err)
      });
    }
  })
  .catch((err) => {
    console.log(err.message);
  });
}

The JSON files will more than 50Mb depending on data, since it contains base64 image data the size will increase as the user takes more photos.

The app will be creating new files when the user records any information, There is no error message displayed for partial file upload.

The this.moveSyncedFiles() is moving the synced files to another folder so that the same file does not get uploaded multiple times

 moveFile(oldpath, oldName) {
  var syncedPath = RNFS.DocumentDirectoryPath + '/syncedFiles'
  RNFS.mkdir(syncedPath)
  syncedPath = syncedPath + "/" + oldName
  RNFS.moveFile(oldpath, syncedPath)
    .then((success) => {
      console.log("files moved successfully")
      })
    .catch((err) => {
      console.log(err.message)
      });
    }

Answer 1

事实证明，故障出在nodejs端，并且每次发现新文件时nodemon都会重新启动服务器，因此我们只是将uploads文件夹移到了项目范围之外