Aspose.Cells导入导出

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();
}

导入Controller
● 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
http://forums.iis.net/t/1169846.aspx

关于MVC4.0 WebAPI上传图片重命名以及图文结合
http://www.cnblogs.com/ang/archive/2012/10/24/2634176.html

ASP.NET Web Api Self Host大文件上传功能
http://www.cnblogs.com/fenglin1985/archive/2013/01/29/2879926.html

首发地址:http://www.yuanxj.net/2014/02/upladfile/