JS前端用jszip生成zip压缩包下载

Bertha 。 2022-04-17 03:23 487阅读 0赞

<div class='domo'>
    <div class="yaojianbaogao" style="display: none;">
        <img src="image1.jpg" width="50"  data-ordercode="bianhao0001"  data-title="goods-good-1212" data-alt="goods-good-1212-pic1.jpg" >
        <img src="image1.jpg" width="50"  data-ordercode="bianhao0001"  data-title="goods-good-1212" data-alt="goods-good-1212-pic2.jpg" >
        <img src="image1.jpg" width="50"  data-ordercode="bianhao0001"  data-title="goods-good-1211" data-alt="goods-good-1211-pic1.jpg" >
    </div>
    
        <a href="javascript:;" class="label label-primary radius ml-5 downloadzip">  打包下载  </a>
    </div>
    
    <script type="text/javascript" src="jszip/jszip.min.js"></script>
    <script src="jszip/FileSaver.js"></script>
    
    $(".downloadzip").click(function () {
        var imgs = $(this).parent().find('.yaojianbaogao').children();
        var zip = new JSZip();
        var file_name = '';
        $.each(imgs,function (index,item) {
            file_name  = $(item).data('ordercode')+'.zip';
            var img = zip.folder($(item).data('title'));
            var imgdata = getBase64Image($(item).attr('src'));
            var img_arr = imgdata.split(',');
            img.file($(item).data('alt'),img_arr[1],{base64: true});
        })
        zip.generateAsync({type:"blob"})
            .then(function(content) {
                saveAs(content, file_name);
            });
    });
    
    function getBase64Image(images) {
        var img = new Image();
        img.src = images;
        var canvas = document.createElement("canvas");
        canvas.width = img.width;
        canvas.height = img.height;
        var ctx = canvas.getContext("2d");
        ctx.drawImage(img, 0, 0, img.width, img.height);
        var ext = img.src.substring(img.src.lastIndexOf(".")+1).toLowerCase();
        var dataURL = canvas.toDataURL();
        return dataURL;
    }