zip.js是什么
zip.js的github项目地址:http://gildas-lormeau.github.io/zip.js/
通过zip.js封装一个能在网页端生成zip文件的插件, 直接在网页中创建包含文件夹和文件的压缩包,也可以自定义名字并下载;
如何使用:
1:引用zip.js
2:引用jQuery;
3:并引用封装的ZipArchive.js ,(因为zip.js的api使用起来比较繁琐,所以自己封装实现了这个插件)
4:引用mime-types.js;
查看DEMO, 使用方式为:
运行下面代码
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <script src="http://gildas-lormeau.github.io/zip.js/demos/zip.js"></script> <script src="http://gildas-lormeau.github.io/zip.js/demos/mime-types.js"></script> <script src="http://apps.bdimg.com/libs/jquery/1.9.0/jquery.js"></script> <script src="http://files.cnblogs.com/files/diligenceday/ZipArchive.js"></script></head><body><script> var z = new ZipArchive; z.addFile("a/a.txt", "aaaaaaacontent"); z.addFile("aaaa.txt", "aaaaaaaccccc"); z.export("nono");</script></body></html>
DEMO在后面:文件下载下来, 文件夹的格式如下:
回到顶部
创建压缩文件和文件夹的详细源代码:
运行下面代码
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <script src="http://gildas-lormeau.github.io/zip.js/demos/zip.js"></script> <script src="http://gildas-lormeau.github.io/zip.js/demos/mime-types.js"></script> <script src="http://apps.bdimg.com/libs/jquery/1.9.0/jquery.js"></script> <style> code{ display: block; padding: 10px; background: #eee; } </style></head><body> <div> <h1> 兼容性 </h1> <div> <p> zip.js可以在所有的chrome浏览器和firefox浏览器中运行, 可以在safari6和IE10,以及IE10以上运行; </p> <p> 如果要在IE9和safari中运行需要两个设置: </p> <code> 1:zip.useWebWorkers == false </code> <code> 2:并引用这个JS:https://bitbucket.org/lindenlab/llsd/raw/7d2646cd3f9b/js/typedarray.js </code> </div> </div><script> zip.workerScriptsPath = "http://gildas-lormeau.github.io/zip.js/demos/"; /** * @desc 压缩文件; * @event onprogress, onend, onerror; * */ var ZipArchive = function() { function noop() {}; this.name = "未命名文件"; this.zippedBlob = {}; var _this = this; this.length = 0; this.onend = noop; this.onerror = noop; this.onprogress = noop; //创建一个延迟对象; var def = this.defer = new $.Deferred(); zip.createWriter( new zip.BlobWriter("application/zip"), function(zipWriter) { _this.zipWriter = zipWriter; //继续执行队列; def.resolve(); }, this.error ); }; ZipArchive.blob = function (filename, content) { return new Blob([ content ], { type : zip.getMimeType(filename) }); }; $.extend( ZipArchive.prototype, { /** * @desc 添加文件 * @param String filename为文件的名字; * @param String content; * @param Object options 传参 * 例如:{ level : 0} 压缩的等级,0 到 9; * 例如:{ comment : "提示文字" } * 例如:{ lastModDate : "最后编辑时间" } * */ "addFile" : function ( filename , content, options) { var _this = this; blob = ZipArchive.blob(filename, content); //为了产生链式的效果, 必须把deferrer赋值给新的defer this.defer = this.defer.then(function() { var def = $.Deferred(); _this.zipWriter.add(filename, new zip.BlobReader(blob) ,function() { // reader console.log("addFile success!!"); def.resolve(); //zipWriter.close(callback); }, function (size, total) { //onend _this.onend(filename, blob, total); _this.length += total; }, function () { //onprogress _this.onprogress(filename, blob, total); },options || { //options }); return def; }); }, /** * @desc 添加文件夹, 我发现这个文件无法创建; * @desc 创建文件夹功能不好用, 需要创建文件夹你通过 zipWriter.addFile("directory/filename.txt", blob())创建文件夹和对应文件;; * */ "_addFolder" : function (foldername , options) { //创建文件夹功能目前不能用; //创建文件夹功能不好用, 直接通过 zipWriter.addFile("directory/filename.txt", blob())创建文件夹和文件 return this; }, "size" : function () { return this.length; }, /** * @desc 获取blob文件 * */ "get" : function () { return this.zippedBlob; }, /** * @desc 导出为zip文件 * */ "export" : function ( name ) { name = name || this.name; var _this = this; this.defer.then(function() { _this.zipWriter.close(function( zippedBlob ) { if( typeof name === "string" || typeof name === "number") { var downloadButton = document.createElement("a"), URL = window.webkitURL || window.mozURL || window.URL; downloadButton.href = URL.createObjectURL( zippedBlob ); downloadButton.download = name + ".zip"; downloadButton.click(); }else{ name( zippedBlob ); }; }); }); }, "error" : function() { this.onerror( this ); throw new Error("压缩文件创建失败"); } });</script><script> var z = new ZipArchive; z.addFile("a/a.txt", "aaaaaaacontent"); z.addFile("aaaa.txt", "aaaaaaaccccc"); z.export("nono");</script></body></html>
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