ASPNET 文件批量下载

html

<a class="btn btn-warning" id="btndownload">选中下载</a>

js

        /*
            批量下载
        */
        // li 列表的文件下载
        $("#btndownload").on('click', function() {
                var arr = [];
                var urls = escape(arr.join(','));
                $(this).attr('href', '@url.action("batchdownloadfiles")?str=' + urls + '&r=' + math.random());
        });

api

        public actionresult batchdownloadfiles(string str, int type)
        {
            var idlist = str.split(',').tolist().convertall(x => int.parse(x));
            memorystream ms = new memorystream();
            zipoutputstream zos = new zipoutputstream(ms);
            zos.isstreamowner = false;
            zos.setlevel(1);//设置压缩级别

            var rsp = new getlistbydetailidlistrequest
            {
                userid = currentuserid,
                jobtypeid = type,
                idlist = idlist
            }.getresponse();
            if (rsp.issuccess)
            {
                rsp.data.foreach(dto =>
                {
                    var filebyte = byteofgetorderfiles(dto);   //byte类型的数据
                    zipentry entry = new zipentry(filename);  //定义新的压缩数据对象
                    zos.putnextentry(entry);
                    zos.write(filebyte, 0, filebyte.length);  //写入
                });
            }
            zos.finish();
            zos.close();

            ms.position = 0;
            return file(ms, "application/x-zip-compressed", string.format("批量下载文件-{0}.zip", datetime.now.tostring("yyyy年mm月dd hh时mm分ss秒")));
        }

        public byte[] byteofgetorderfiles(extractrecorddetaildto dto)
        {
            var stream = downloadfile(dto.sourcefile);
            byte[] buffur = new byte[stream.length];
            stream.read(buffur, 0, (int)stream.length);
            return buffur;
        }
        
　　　　public static stream downloadfile(string path)
　　　　{
　　　　　　using (var client = new webclient())
　　　　　　{
　　　　　　　　var stream = client.downloaddata(path);
　　　　　　　　var outstream = new memorystream(stream);
　　　　　　　　return outstream;
　　　　　　}
　　　　}

view code