.NET Core MVC 批量压缩下载文件

Controller :

public async Task<IActionResult> WordDownLoad(string ids)
{
var taskserviceR = App.GetService<MyTaskService>();
var taskR = App.GetService<IRepository<MyTaskEntity>>();
var idsarr = ids.ToList<Guid>(",");
if (idsarr.Count == 1)
{
var entitydto = taskR.Entities.Find(idsarr[0]);
var result = await taskserviceR.ExportWordFileByTemplate(ids);
return File(result, "application/ms-word", entitydto.EmpCode+".docx");//文件流方式，指定文件流对应的ContenType;
}
else
{
var zipname = DateTime.Now.ToString("yyyyMMddHHmmss") + ".zip";
var result = await taskserviceR.ExportWordFileByTemplatezip(ids);

return File(result, "application/zip", zipname);//文件流方式，指定文件流对应的ContenType;
}

}

Service:

 程序集 Magicodes.IE.Word 

 System.IO.Compression.ZipFile 类

         /// <summary>
        /// 单个文件下载
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public async Task<byte[]> ExportWordFileByTemplate(string id)
        {
                var keyid = new Guid(id);
                var query = _repository.Entities.AsQueryable();
          
                var entitydto = _repository.Entities.Find(keyid);
                var empcode = entitydto.EmpCode;

                var tplPath = Path.Combine(Directory.GetCurrentDirectory(), "WordExport", "WordTemplate", "receipt.cshtml");
                var tpl = File.ReadAllText(tplPath);
              
              
                var exporter = new WordExporter();
                var result = await exporter.ExportBytesByTemplate(
               new ReceiptInfo
               {
                   Grade = entitydto.CostCenter,
                   IdNo = entitydto.IDCard,
                   Name = entitydto.UserName,
                   TradeTime = DateTime.Now,
                   Code = entitydto.EmpCode
               }, tpl, typeof(ReceiptInfo));
            //此处使用默认模板导出
            return result;

        }
        /// <summary>
        /// 多个文件批量下载，已压缩包的方式返回
        /// </summary>
        /// <param name="ids"></param>
        /// <returns></returns>

        public async Task<byte[]> ExportWordFileByTemplatezip(string ids)
        {
            var empuser = App.User.GetValue("EmployeeCode");
            var query = _repository.Entities;
            var Guids = ids.ToList<Guid>(",");
            List<byte[]> list = new List<byte[]>();
            var tplPath = Path.Combine(Directory.GetCurrentDirectory(), "WordExport", "WordTemplate", "receipt.cshtml");
            var tpl = File.ReadAllText(tplPath);
          
            var docxpath = Path.Combine(Directory.GetCurrentDirectory(), "WordExport", "File", empuser + "_docx");
            var zipdirectoryPath = Path.Combine(Directory.GetCurrentDirectory(), "WordExport", "File", empuser + "_zip");
           
            if (false == Directory.Exists(docxpath))
            {
                //创建文件夹
                Directory.CreateDirectory(docxpath);
            }
            DeleteDirAllFile(docxpath);
            if (false == Directory.Exists(zipdirectoryPath))
            {
                //创建文件夹
                Directory.CreateDirectory(zipdirectoryPath);
            }
            DeleteDirAllFile(zipdirectoryPath);
            foreach (var id in Guids)
            {
               
                var entitydto = query.Find(id);
                var filename = entitydto.UserName;
                var empcode = entitydto.EmpCode;
                var filePath = Path.Combine(docxpath, filename + empcode + ".docx");

                var exporter = new WordExporter();
                var result = await exporter.ExportBytesByTemplate(
                new ReceiptInfo
               {
                   Grade = entitydto.CostCenter,
                   IdNo = entitydto.IDCard,
                   Name = entitydto.UserName,
                   TradeTime = DateTime.Now,
                   Code = entitydto.EmpCode
               }, tpl, typeof(ReceiptInfo));
               
                using (var file = File.OpenWrite(filePath))
                {
                    file.Write(result, 0, result.Length);
                }
                File.Exists(filePath);

            }
            var zipname = DateTime.Now.ToString("yyyyMMddHHmmss")+".zip";
            ZipFile.CreateFromDirectory(docxpath,zipdirectoryPath+"/"+zipname);
            using (FileStream fs = new FileStream(zipdirectoryPath + "/" + zipname, FileMode.Open, FileAccess.Read))
            {
                byte[] byteArray = new byte[fs.Length];
                fs.Read(byteArray, 0, byteArray.Length); fs.Close();
                if (Directory.Exists(docxpath))
                {
                    Directory.Delete(docxpath, true);
                }
               
                if (Directory.Exists(zipdirectoryPath))
                {
                    Directory.Delete(zipdirectoryPath, true);
                }

                return byteArray;
            }
          


        }

模板：

<!DOCTYPE html>

<html lang="en" xmlns="http://www.w3.org/1999/xhtml">

<head>
    <meta charset="utf-8" />
    <title></title>
    <style type="text/css">
        body {
            font-family: SimSun !important;
        }

        p {
            margin: 0px;
        }

        footer {
            color: #333;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            margin-right: 5%;
            margin-top: 1.2rem;
            text-align: right;
        }

        table,
        td {
            border: 1px solid #444;
            border-collapse: collapse;
            /* text-align: center; */
            height: 2rem;
            padding: 5px;
        }
    </style>
</head>

<body>
    <p style="color: #000; font-size: 1.8rem; height: 32px; text-align: center;">
        @Model.Title
    </p>
    <p style="color: #333; font-size: 1.2rem; margin-left: 5%; margin-top: 1%;">
        <text>NO：@Model.Data.Code</text>
        <text style="padding-left: 52%; text-align: right;">交易时间：@Model.Data.TradeTime.ToString("yyyy-MM-dd HH:mm:ss")</text>
    </p>

    <table width="90%" style="margin-left: 5%; margin-top: 1%;">
        <tr style="font-size: 1rem;">
            <td style="text-align: center; width: 11%;">交款姓名</td>
            <td colspan="2">@Model.Data.Name</td>
            <td style="text-align: center; width: 13%;">身份证号码</td>
            <td colspan="3">@Model.Data.IdNo</td>
        </tr>
        <tr style="font-size: 1rem;">
            <td style="text-align: center">交易金额</td>
            <td colspan="6">
                <span>￥：@Model.Data.Amount</span>
                <span style="padding: 0 2% 0 2%;">人民币(大写):</span>
                <span>@Model.Data.UppercaseAmount</span>
            </td>
        </tr>
        <tr style="font-size: 1rem;">
            <td style="text-align: center">收款方式</td>
            <td colspan="2">@Model.Data.PaymentMethod</td>
            <td style="text-align: center; width: 13%;">交易状态</td>
            <td colspan="3">@Model.Data.TradeStatus</td>
        </tr>

        <tr style="font-size: 1rem;">
            <td style="text-align: center">收款事由</td>
            <td style="width: 22.3%;">@Model.Data.Remark</td>
            <td style="text-align: center; width: 11%;">入学年级</td>
            <td style="width: 22.3%;" colspan="2">@Model.Data.Grade</td>
            <td style="text-align: center; width: 11%;">专业</td>
            <td style="width: 22.3%;">@Model.Data.Profession</td>
        </tr>


    </table>

</body>
</html>