$("#btnUploadExcelSave").click(function () {

var fileObj = document.getElementById("file").files[0]; // js 获取文件对象

var FileController = "../FileHandler.ashx?type=3"; // 接收上传文件的后台地址

// FormData 对象

var form = new FormData();

form.append("author", "hooyes"); // 可以增加表单数据

form.append("file", fileObj); // 文件对象

// XMLHttpRequest 对象

var xhr = new XMLHttpRequest();

xhr.open("post", FileController, true);

xhr.onload = function () {

// alert("上传完成!");

};

xhr.upload.addEventListener("progress", progressFunction, false);

xhr.send(form);

});

然后定义后台方法处理Excel：

FileHandler.ashx///

/// Excel导入到数据库

///

///

public string UploadExcelData(HttpContext context)

{

var flist = context.Request.Files;

for (int i = 0; i < flist.Count; i++)

{

var c = flist[i];

string IsXls = System.IO.Path.GetExtension(c.FileName).ToString().ToLower();

if (IsXls != ".xls")

{

return "格式不正确！";

}

string savePath = System.Configuration.ConfigurationManager.AppSettings["temFilePath"].ToString() + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".xls";

c.SaveAs(context.Server.MapPath(savePath));//将文件保存到服务器，因为火狐浏览器获取不到客户端的路径。

DataSet ds = ExcelSqlConnection(context.Server.MapPath(savePath), "tranportTask");//将excel文件转换为DataSet。

//这里处理你业务逻辑...

}

return "";

}

public static System.Data.DataSet ExcelSqlConnection(string filepath, string tableName)

{

string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1'";

System.Data.OleDb.OleDbConnection ExcelConn = new System.Data.OleDb.OleDbConnection(strCon);

try

{

string strCom = string.Format("SELECT * FROM [Sheet1$]");

ExcelConn.Open();

System.Data.OleDb.OleDbDataAdapter myCommand = new System.Data.OleDb.OleDbDataAdapter(strCom, ExcelConn);

DataSet ds = new DataSet();

myCommand.Fill(ds, "[" + tableName + "$]");

ExcelConn.Close();

return ds;

}

catch

{

ExcelConn.Close();

return null;

}

}

原文：http://blog.csdn.net/mx5721/article/details/44101379