node-remote-file-save

项目介绍

• 基于request模块实现远程文件下载

安装

• (c)npm install node-remote-file-save -D

使用

const Download = require('node-remote-file-save');
const path = require('path');

// *** 001

let res = Download.download({
    url: 'https://www.baidu.com',
    dir: path.resolve(__dirname + '/uploads'),
});
res.then(res => {
    console.log(res);
    /*
    {
        status: 200,
        msg: 'success',
        resource: 'https://www.baidu.com',
        data:
        {
            filePath: 'D:\\1a\\github\\node-download-remote\\test\\uploads\\1beccd6c357c4487907d2e6bf1e06556.html',
            contentType: 'text/html'
        }
    }
    * */
});




// *** 002

let res2 = Download.download({
    url: 'https://www.baidu.com',
    dir: path.resolve(__dirname + '/uploads'),
    // 可选 default:'' || 保存文件名称，空则生成随机字符串
    fileName: 'baidu',
    // 可选 default:false || 自动设置文件名后缀。根据http响应content-type来保存文件后缀。手动设置fileName生效
    autoSuffix: true
});
res2.then(res => {
    console.log(res);
    /*
    {
        status: 200,
        msg: 'success',
        resource: 'https://www.baidu.com',
        data:
        {
            filePath: 'D:\\1a\\github\\node-download-remote\\test\\uploads\\baidu.html',
            contentType: 'text/html'
        }
    }
    * */
});





// *** 003

let download = new Download();
// 必须 || 实例配置，为一个实例设置一个配置
download.setConfig({
    dir: path.resolve(__dirname + '/uploads/uploads10'),
    // 可选 default:1 || 并行下载数
    meanwhile: 3,
});


download.push('https://www.baidu.com/img/bd_logo1.png');
download.push('https://www.sogo.com/web/index/images/logo_440x140.v.4.png');
download.push({
    url: 'https://www.baidu.com/img/bd_logo1.png',
    // 可选 default:实例配置 || 如未有提供此参数，默认使用配置实例配置
    dir: path.resolve(__dirname + '/uploads/images'),
    // 可选 || 同002
    fileName: 'baidu_logo_2',
    // 可选 || 同002
    autoSuffix: true
});

download.push([
    'https://www.sogo.com/',
    'https://www.baidu.com',
    {
        url: 'https://www.sogo.com/web/index/images/logo_440x140.v.4.png',
        // 可选 default:实例配置 || 如未有提供此参数，默认使用配置实例配置
        dir: path.resolve(__dirname + '/uploads/images'),
        // 可选 || 同002
        fileName: 'sogou_logo',
        // 可选 || 同002
        autoSuffix: true
    }
]);

// 查看远程下载列表
// console.log(download.list)
// 启用下载
let res3 = download.exec();

res3.then(res => {
    console.log(res);

    // console.log(download.list);// []

});
    /*
    [
        { status: 200,
        msg: 'success',
        resource: 'https://www.baidu.com/img/bd_logo1.png',
        data:
        { filePath: 'D:\\1a\\github\\node-download-remote\\test\\uploads\\uploads10\\29d2f53a6946424782f25f33cf88968c.png',
        contentType: 'image/png' } },

        { status: 200,
        msg: 'success',
        resource: 'https://www.sogo.com/web/index/images/logo_440x140.v.4.png',
        data:
        { filePath: 'D:\\1a\\github\\node-download-remote\\test\\uploads\\uploads10\\3278542b0f22433ab3ba4f6e7e6871bc.png',
        contentType: 'image/png' } },

        { status: 200,
        msg: 'success',
        resource: 'https://www.baidu.com/img/bd_logo1.png',
        data:
        { filePath: 'D:\\1a\\github\\node-download-remote\\test\\uploads\\images\\baidu_logo_2.png',
        contentType: 'image/png' } },

        { status: 200,
        msg: 'success',
        resource: 'https://www.sogo.com/',
        data:
        { filePath: 'D:\\1a\\github\\node-download-remote\\test\\uploads\\uploads10\\7185f36634ed4cfabe2e57b10b43b94a.html',
        contentType: 'text/html; charset=UTF-8' } },

        { status: 200,
        msg: 'success',
        resource: 'https://www.baidu.com',
        data:
        { filePath: 'D:\\1a\\github\\node-download-remote\\test\\uploads\\uploads10\\a4e84f80ee344626a5e9ad712be041b0.html',
        contentType: 'text/html' } },

        { status: 200,
        msg: 'success',
        resource: 'https://www.sogo.com/web/index/images/logo_440x140.v.4.png',
        data:
        { filePath: 'D:\\1a\\github\\node-download-remote\\test\\uploads\\images\\sogou_logo.png',
        contentType: 'image/png' } }
    ]
    */






// *** 004

// 错误处理
// 1、在exec执行下载时为保证其他下载继续，返回的中promise永远不会得到reject状态
// 2、如遇远程资源无法访问、http响应非200或者请求地址错误时(非完整http地址)，会在resolve状态中数组得到相应信息，如下
let download2 = new Download();
download2.setConfig({
    dir: path.resolve(__dirname + '/uploads/uploads11'),
});

download2.push([
    'https://www.google.com',
    'https://www.sogou.com',
    'https://www.sogou.com/404',
    'www.google.com',
]);

let res4 = download2.exec();

res4.then(res => {
    console.log(res);
    /*
    [
        { status: 0,
        msg: 'Request error: ETIMEDOUT',
        resource: 'https://www.google.com' },

        { status: 200,
        msg: 'success',
        resource: 'https://www.sogou.com',
        data:
        { filePath: 'D:\\1a\\github\\node-download-remote\\test\\uploads\\uploads11\\32f975aedae444d68a55db7943390be7.html',
        contentType: 'text/html; charset=UTF-8' } },

        { status: 404,
        msg: 'Response error: The status code is not 200',
        resource: 'https://www.sogou.com/404' },
        
        { status: 0,
        msg: 'Request error: Invalid URI "www.google.com"',
        resource: 'www.google.com' }
    ]
    */
});




// *** 005

// 依赖模块
console.log(Download.request);
console.log(Download.makeDir);
console.log(Download.mimeTypes);

依赖模块

• request
• make-dir
• mimeTypes