前言

archive是一款在nodejs中可以实现跨平台打包的工具

可以将文件压缩为zip或rar格式

是一个比较好用的第三方模块

install

npm install archiver --save

archive github地址：https://github.com/archiverjs/node-archiver

Quick Start

// require modulesvar fs = require('fs');var archiver = require('archiver');// create a file to stream archive data to.var output = fs.createWriteStream(__dirname + '/example.zip');//设置压缩格式为zipvar archive = archiver('zip', { zlib: { level: 9 } // Sets the compression level.});// listen for all archive data to be written// 'close' event is fired only when a file descriptor is involvedoutput.on('close', function() { console.log(archive.pointer() + ' total bytes'); console.log('archiver has been finalized and the output file descriptor has closed.');});// This event is fired when the data source is drained no matter what was the data source.// It is not part of this library but rather from the NodeJS Stream API.// @see: https://nodejs.org/api/stream.html#stream_event_endoutput.on('end', function() { console.log('Data has been drained');});// good practice to catch this error explicitlyarchive.on('error', function(err) { throw err;});// pipe archive data to the filearchive.pipe(output);// append a file from streamvar file1 = __dirname + '/file1.txt';archive.append(fs.createReadStream(file1), { name: 'file1.txt' });// append a file from stringarchive.append('string cheese!', { name: 'file2.txt' });// append a file from buffervar buffer3 = Buffer.from('buff it!');archive.append(buffer3, { name: 'file3.txt' });// append a filearchive.file('file1.txt', { name: 'file4.txt' });// append files from a sub-directory and naming it `new-subdir` within the archivearchive.directory('subdir/', 'new-subdir');// append files from a sub-directory, putting its contents at the root of archivearchive.directory('subdir/', false);// append files from a glob patternarchive.glob('subdir/*.txt');// finalize the archive (ie we are done appending files but streams have to finish yet)// 'close', 'end' or 'finish' may be fired right after calling this method so register to them beforehandarchive.finalize();

实际使用

实际使用中情况可能会比较多

需要打包的源文件一般为远程文件，比如某一个第三方的文件存放地址，这时则需要先将第三方文件下载到本地

示例方法，可以根据实际需要修改相应的参数

function download(files){ //下载文件的本地存档地址 //示例 files = [{name: 'xxxx.js',url:'https://xx/xx/xxxx.js'}] let dirPath = path.resolve(__dirname, '文件存放的本地位置') mkdir(dirPath); let tmps = files.map((item,index) => { let stream = fs.createWriteStream(path.resolve(dirPath, item.name)); return new Promise((resolve,reject)=>{ try { request(item.url).pipe(stream).on("close", function (err) { console.log("文件[" + item.name + "]下载完毕"); resolve({ url: path.resolve(dirPath, item.name), name: item.name }) }); } catch (e) { reject(e||'') } })});return new Promise((res,rej)=>{ Promise.all(tmps).then((result) => { console.log(result) res(result) }).catch((error) => { console.log(error||'') })})}//创建文件夹目录function mkdir(dirPath) { if (!fs.existsSync(dirPath)) { fs.mkdirSync(dirPath); console.log("文件夹创建成功"); } else { console.log("文件夹已存在"); }}

将下载到本地的文件打包为一个zip文件，可以参照 Quick Start 中的api组合使用

// append files from a sub-directory, putting its contents at the root of archive archive.directory('subdir/', false); //要注意第二个参数false，这个参数代表打包后的文件相对于output的目录结构，不写这个参数代表按照第一个参数('subdir/')的目录层级

打包之后的文件位置是在本地位置，此时在推送到前端页面中下载url需要组装成http或https的地址

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。