function genFileKey()

genFileKey.js

/**
 * 根据文件名生成文件的 key
 * @param fileName
 * @returns {string}
 */
function genFileKey(fileName) {
  var fileKey = '';

  // 将文件名中的有效字符提取出来作为文件 key
  var realFileName = fileName.match(/[\w|\.]/g).join('');
  if (realFileName.startsWith('.')) realFileName = '_' + realFileName;

  if (thisUser) fileKey += thisUser.id + '/';
  fileKey += Functions.guid() + '/' + realFileName;

  return fileKey;
}