ASP.NET Core 导入导出Excel xlsx 文件

ASP.NET Core 使用EPPlus.Core导入导出Excel xlsx 文件，EPPlus.Core支持Excel 2007/2010 xlsx文件导入导出，可以运行在Windows, Linux和Mac。EPPlus.Core 是基于EPPlus 更改而来，在Linux 下需要安装libgdiplus 。

EPPlus：http://epplus.codeplex.com/EPPlus.Core：https://github.com/VahidN/EPPlus.Core下面在ASP.NET Core 中导入导出Excel xlsx 文件。

新建项目

新建一个ASP.NET Core Web Application 项目ASPNETCoreExcel，选择Web 应用程序 不进行身份验证。然后添加EPPlus.Core 引用。使用NuGet 命令行：也可以使用NuGet包管理器安装。

导出xlsx文件

新建一个XlsxController ，添加Export 操作。

    public class XlsxController : Controller{private IHostingEnvironment _hostingEnvironment;public XlsxController(IHostingEnvironment hostingEnvironment){_hostingEnvironment = hostingEnvironment;}public IActionResult Index(){return View();}public IActionResult Export(){string sWebRootFolder = _hostingEnvironment.WebRootPath;string sFileName = $"{Guid.NewGuid()}.xlsx";FileInfo file = new FileInfo(Path.Combine(sWebRootFolder, sFileName));using (ExcelPackage package = new ExcelPackage(file)){// 添加worksheetExcelWorksheet worksheet = package.Workbook.Worksheets.Add("aspnetcore");//添加头worksheet.Cells[1, 1].Value = "ID";worksheet.Cells[1, 2].Value = "Name";worksheet.Cells[1, 3].Value = "Url";//添加值worksheet.Cells["A2"].Value = 1000;worksheet.Cells["B2"].Value = "LineZero";worksheet.Cells["C2"].Value = "http://www.cnblogs.com/linezero/";worksheet.Cells["A3"].Value = 1001;worksheet.Cells["B3"].Value = "LineZero GitHub";worksheet.Cells["C3"].Value = "https://github.com/linezero";worksheet.Cells["C3"].Style.Font.Bold = true;package.Save();}return File(sFileName, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");}}

通过依赖注入获取HostingEnvironment，对应可以获取程序的相关目录及属性。然后添加Index 视图增加一个链接导出Excel

@{}<h2>ASP.NET Core 导入导出Excel xlsx 文件</h2><a asp-action="Export">导出Excel</a>

点击导出文件，打开结果如下。

导入xlsx文件

在index视图中添加一个上传文件，添加Import操作。Index.cshtml

@{}<h2>ASP.NET Core 导入导出Excel xlsx 文件</h2><a asp-action="Export">导出Excel</a><hr /><form enctype="multipart/form-data" method="post" asp-action="Import"><input type="file" name="excelfile" /><input type="submit" value="上传" /></form>

        [HttpPost]public IActionResult Import(IFormFile excelfile){string sWebRootFolder = _hostingEnvironment.WebRootPath;string sFileName = $"{Guid.NewGuid()}.xlsx";FileInfo file = new FileInfo(Path.Combine(sWebRootFolder, sFileName));try{using (FileStream fs = new FileStream(file.ToString(), FileMode.Create)){excelfile.CopyTo(fs);fs.Flush();}using (ExcelPackage package = new ExcelPackage(file)){StringBuilder sb = new StringBuilder();ExcelWorksheet worksheet = package.Workbook.Worksheets[1];int rowCount = worksheet.Dimension.Rows;int ColCount = worksheet.Dimension.Columns;bool bHeaderRow = true;for (int row = 1; row <= rowCount; row++){for (int col = 1; col <= ColCount; col++){if (bHeaderRow){sb.Append(worksheet.Cells[row, col].Value.ToString() + "\t");}else{sb.Append(worksheet.Cells[row, col].Value.ToString() + "\t");}}sb.Append(Environment.NewLine);}return Content(sb.ToString());}}catch (Exception ex){return Content(ex.Message);}}

运行程序打开http://localhost:5000/xlsx上传对应文件，显示如下。ASP.NET Core简单的导入导出Excel 功能也就完成了。如果你觉得本文对你有帮助，请点击“推荐”，谢谢。