WechatOwnerService/factory/FileFactory.js

/**
 * 文件工厂类
 * 
 * add by wuxw 2019-12-28
 * 
 * 
 */


class FileFactory{
  constructor(){}

  // 获取书籍已下载路径
  getDownloadPath(key) {
    return wx.getStorageSync(key);
  }

// 调用 wx.saveFile 将下载的文件保存在本地
saveDownloadPath(key, filePath) {
  return new Promise((resolve, reject) => {
    wx.saveFile({
      tempFilePath: filePath,
      success: function (res) {
        // 保存成功 在Storage中标记 下次不再下载
        let savedFilePath = res.savedFilePath;
        wx.setStorageSync(key, savedFilePath);
        resolve(savedFilePath);
      },
      fail: function () {
        reject(false);
      }
    });
  })

}

}

module.exports = FileFactory;