okdownload

npm install @ohos/okdownload --save

import {DownloadTask} from '@ohos/okdownload'

this.task = new DownloadTask.Builder(url, filename)
    .build()
this.task.execute(listener) //同步执行任务

import {DownloadContextListener} from '@ohos/okdownload'
import {DownloadContext, QueueSet} from '@ohos/okdownload'
import {DownloadTask} from '@ohos/okdownload'

let queueSet = new QueueSet();
queueSet.setParentPath('queue')
let builder = queueSet.commit()

let url = "http://cdn.llsapp.com/yy/image/3b0430db-5ff4-455c-9c8d-0213eea7b6c4.jpg"
let boundTask = builder.bindUrl(url, 'task1.jpg')

url = "http://cdn.llsapp.com/yy/image/3b0430db-5ff4-455c-9c8d-0213eea7b6c4.jpg"
boundTask = builder.bindUrl(url, 'task2.jpg')

url = "https://dldir1.qq.com/qqfile/QQforMac/QQ_V6.2.0.dmg"
boundTask = builder.bindUrl(url, 'QQ_V6.2.0.dmg')

this.downloadContext = builder.build();
this.downloadContext.start(listener, false) //true为同步下载， false为异步下载

|---- okdownload
|   |---- entry  # 示例代码文件夹
|       |----src
|            |----customRadio
|            |----model
|            |----util
|   |---- okdownload  # 库文件夹
|       |---- src
|           |---- main
|               |---- ets
|                   |---- common
|                       |---- http # 网络请求
|                       |---- okdownload
|                           |---- breakpoint # 断点信息
|                           |---- cause # 下载状态
|                           |---- connection # 网络接口
|                           |---- dispatcher # 下载任务装配
|                           |---- download # 下载逻辑
|                           |---- exception # 异常
|                           |---- interceptor #拦截器
|                           |---- listener #任务监听
|                           |---- DownloadContext.ets # 多个下载任务串/并行下载，使用QueueSet来做设置
|                           |---- DownloadListener.ets #下载状态回调接口定义
|                           |---- DownloadMonitor.ets #下载任务监控
|                           |---- DownloadTask.ets # 单个下载任务
|                           |---- OkDownload.ets # 入口类，负责下载任务装配
|                           |---- SpeedCalculator.ets # 下载速度计算
|                           |---- StatusUtil.ets # 检查下载文件是否已经下载完成等
|                       |---- sqlite #数据库
|   |---- README.md  # 安装使用方法