Aspose.Cells导入导出
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插件：Aspose.Cells
没有安装office插件也能使用；
导出：不能使用ajax异步·
/// <summary> /// 导出试题 /// </summary> /// <param name="userId">用户Id</param> /// <param name="courseId">课程Id</param> /// <returns></returns> [HttpGet] public FilePathResult ExportQuestions(int userId, int courseId) { // 工作薄 Workbook BuildReport_WorkBook = new Workbook(); //sheets集合 Worksheets sheets = BuildReport_WorkBook.Worksheets; //试题表 Worksheet BuildReport_WorkSheet = BuildReport_WorkBook.Worksheets[0]; // sheet1 BuildReport_WorkBook.Worksheets[0].Name = "试题表"; BuildReport_WorkSheet.FreezePanes(1, 1, 1, 0); //冻结第一行 BuildReport_WorkSheet.AutoFitColumns();//让各列自适应宽度 Cells BuildReportCells = BuildReport_WorkSheet.Cells; //单元格 //表头 BuildReportCells[0, 0].PutValue("试题Id"); BuildReportCells[0, 1].PutValue("课程Id"); BuildReportCells[0, 2].PutValue("试题类型"); //第二个sheet BuildReport_WorkBook.Worksheets.Add("试题描述"); Worksheet BuildReport_WorkSheet_Desc = BuildReport_WorkBook.Worksheets["试题描述"]; //sheet2 BuildReport_WorkSheet_Desc.FreezePanes(1, 1, 1, 0); //冻结第一行 Cells BuildReportCells_Desc = BuildReport_WorkSheet_Desc.Cells; //表头 BuildReportCells_Desc[0, 0].PutValue("试题描述Id"); BuildReportCells_Desc[0, 1].PutValue("试题Id"); BuildReportCells_Desc[0, 2].PutValue("试题描述"); BuildReportCells_Desc[0, 3].PutValue("试题解析"); BuildReportCells_Desc[0, 4].PutValue("试题描述(不包含html字符)"); //列 BuildReportCells[i, 0].PutValue(item.Id); BuildReportCells[i, 1].PutValue(item.CourseId); BuildReportCells[i, 2].PutValue(item.QuestionType); BuildReportCells_Desc[j, 0].PutValue(questionDesc.ID); BuildReportCells_Desc[j, 1].PutValue(questionDesc.QuestionId); BuildReportCells_Desc[j, 2].PutValue(questionDesc.Description); BuildReportCells_Desc[j, 3].PutValue(questionDesc.Analyses); //文件路径 string fileDirPath = "/Downloads/试题" + userId + "_" + courseId; string downPath = Server.MapPath(fileDirPath); if (!Directory.Exists(downPath)) { Directory.CreateDirectory(downPath); } System.IO.File.SetAttributes(downPath, FileAttributes.Normal); string nowTime = DateTime.Now.ToString("yyyyMMddHHmmssfff"); string tempFile = Path.GetTempFileName(); string saveFile = Server.MapPath(fileDirPath + "/" + "试题" + "_" + userId + "_" + courseId + ".xls"); BuildReport_WorkBook.Save(saveFile); return File(saveFile, "application/octet-stream", "试题" + "_" + userId + "_" + courseId + ".xls"); }
导入： view,
需要注意2个问题：
1. 注意给form表单加上enctype = "multipart/form-data" 属性，否则会导致Action的参数HttpPostedFileBase 对象接收不到文件。
2. 注意文件大小，IIS中默认上传的文件大小为4MB ，超过这大小的文件需要在修改配置文件。
<div style="display:none" > <div id="divImportQuestions" class="easyui-dialog" title="导入试题" closed="true" style="width:400px;height:200px;padding:10px;" data-options="iconCls:\'icon-save\',modal:true"> @using (Html.BeginForm("ImportQuestions", "ManageCourse", FormMethod.Post, new { enctype = "multipart/form-data", id = "frmImport" })) { <input id="fileImport" type="file" name="fileImport" /> <div style="padding:5px;text-align:center;"> <a id="btnCommit" href="javascript:void(0);" onclick="ImportQuestions()" class="easyui-linkbutton" iconcls="icon-ok">确 定</a> <a href="javascript:void(0);" onclick="top.ClosedlgWindow();" class="easyui-linkbutton" iconcls="icon-cancel">取 消</a> </div> <input id="hidUserId" type="hidden" name="hidUserId" /> <input id="hidCourseId" type="hidden" name="hidCourseId" /> <input id="hidUserName" type="hidden" name="hidUserName" /> } @*<form id="frmImport" action="/admin/ManageCourse/ImportQuestions" method="post" enctype="multipart/form-data"> <input id="fileImport" type="file" name="fileImport" /> <div style="padding:5px;text-align:center;"> <a id="btnCommit" href="javascript:void(0);" onclick="ImportQuestions()" class="easyui-linkbutton" iconcls="icon-ok">确 定</a> <a href="javascript:void(0);" onclick="top.ClosedlgWindow();" class="easyui-linkbutton" iconcls="icon-cancel">取 消</a> </div> <input id="hidUserId" type="hidden" name="hidUserId" /> <input id="hidCourseId" type="hidden" name="hidCourseId" /> </form>*@ </div> </div>
导入： controller
/// <summary> /// 导入试题 /// </summary> /// <param name="userId">用户Id</param> /// <param name="courseId">课程Id</param> /// <returns>int userId, int courseId,</returns> [HttpPost] public ActionResult ImportQuestions(HttpPostedFileBase upFileBase) { HttpPostedFileBase fileBase = Request.Files["fileImport"]; if (fileBase != null) { #region 保存文件 string fileName = Path.GetFileName(fileBase.FileName); string fileNameNoExt = Path.GetFileNameWithoutExtension(fileBase.FileName); string extension = Path.GetExtension(fileName); //if (extension.ToLower() != ".zip") //extension.ToLower() != ".xls" || extension.ToLower() != ".xlsx" || //{ // //window.location.href=\'@Url.Action(\'a\',\'b\')\' // return Content("<script type=\'text/javascript\'>alert(\'请上传zip格式的压缩文件\');window.location.href=\'/admin/ImportQuestions\';</script>"); //} string filePath = "/UploadFile/试题/"; // +DateTime.Now.ToString("yyyyMMdd") + "/"; if (!Directory.Exists(Server.MapPath(filePath))) //文件夹 { Directory.CreateDirectory(Server.MapPath(filePath)); } string nowTime = DateTime.Now.ToString("yyyyMMddHHmmssfff"); string fullFileName = Server.MapPath(filePath + nowTime + "_" + userId + "_" + courseId + "_" + fileName);//文件名 fileBase.SaveAs(fullFileName); //保存在服务器 #endregion string fileFullName = Path.Combine(strFileUrl, Path.GetFileName(file.Name)); #region 导入EXECL Workbook BuildReport_WorkBook = new Workbook(); BuildReport_WorkBook.Open(fileFullName); Worksheets sheets = BuildReport_WorkBook.Worksheets; //试题表 Worksheet workSheetQuestion = BuildReport_WorkBook.Worksheets["试题表"]; // sheet1 Cells cellsQuestion = workSheetQuestion.Cells; //单元格 Worksheet workSheetDesc = BuildReport_WorkBook.Worksheets["试题描述"]; //sheet2 Cells cellsDesc = workSheetDesc.Cells; //试题表 for (int i = 1; i < cellsQuestion.MaxDataRow + 1; i++) { #region 试题表 Question modQuestion = new Question();//实体 int questionId = cellsQuestion[i, 0].IntValue; dicQuestion[i] = cellsQuestion[i, 0].IntValue; modQuestion.CourseId = cellsQuestion[i, 1].IntValue; modQuestion.QuestionType = cellsQuestion[i, 2].IntValue; //数据库操作 } for (int j = 1; j < cellsDesc.MaxDataRow + 1; j++) { int questionDescFK = cellsDesc[j, 1].IntValue; if (questionId == questionDescFK) { Question_Desc modQuestionDesc = new Question_Desc(); //实体 modQuestionDesc.QuestionId = questionIdNew; //新的 modQuestionDesc.Description = cellsDesc[j, 2].StringValue.Trim(); modQuestionDesc.Analyses = cellsDesc[j, 3].StringValue.Trim(); modQuestionDesc.DescriptionText = cellsDesc[j, 4].StringValue.Trim(); //数据库操作 } } #endregion } return View(); }
● 由于接收多个文件，所以控制器方法的参数变成了IEnumerable<HttpPostedFileBase> files
● 变量files与前台视图的name属性值对应
● 如果没有指定的文件夹，就创建一个文件夹
为什么使用HttpPostedFileBase而不是FormCollection来接收文件
public sealed class FormCollection : NameValueCollection, IValueProvider
可见，FormCollection是键值集合，键是string类型，值是string类型，而上传的文件类型不是string，所以不能用FormCollection作为参数来接收文件。
参考资料：
MVC中的文件上传http://blog.sina.com.cn/s/blog_75a555e40101q8i7.html
Confusing required maxRequestLength and maxAllowedContentLength settings
关于MVC4.0 WebAPI上传图片重命名以及图文结合
ASP.NET Web Api Self Host大文件上传功能
首发地址:http://www.yuanxj.net/2014/02/upladfile/
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