zip.js是什么
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
var z = new ZipArchive;
z.addFile("a/a.txt", "aaaaaaacontent");
z.addFile("aaaa.txt", "aaaaaaaccccc");
z.export("nono");
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
code{
display: block;
padding: 10px;
background: #eee;
}
兼容性
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;
如果要在IE9和safari中运行需要两个设置:
1:zip.useWebWorkers == false
2:并引用这个JS:https://bitbucket.org/lindenlab/llsd/raw/7d2646cd3f9b/js/typedarray.js
zip.workerScriptsPath = "http://gildas-lormeau.github.io/zip.js/demos/";
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, {
"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;
});
},
"_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;
},
"get" : function () {
return this.zippedBlob;
},
"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");
}
});
var z = new ZipArchive;
z.addFile("a/a.txt", "aaaaaaacontent");
z.addFile("aaaa.txt", "aaaaaaaccccc");
z.export("nono");