Arrays AJAX Post JSON对象的大数组返回NULL
我试图在控制器上从JSON对象数组生成一个excel文件。我只传递过一个JSON对象,我使用的方法似乎不适用于列表或JSON数组 AJAX生成对象:Arrays AJAX Post JSON对象的大数组返回NULL,arrays,json,ajax,asp.net-mvc,asp.net-ajax,Arrays,Json,Ajax,Asp.net Mvc,Asp.net Ajax,我试图在控制器上从JSON对象数组生成一个excel文件。我只传递过一个JSON对象,我使用的方法似乎不适用于列表或JSON数组 AJAX生成对象: $.ajax({ type: "GET", url: '/home/GetInfoToExportCalgary', success: function (data) { //console.log(data); CalgaryBookingIn
$.ajax({
type: "GET",
url: '/home/GetInfoToExportCalgary',
success: function (data) {
//console.log(data);
CalgaryBookingInfo = data;
for (var i = 0; i < CalgaryBookingInfo.length; i++) {
if (CalgaryBookingInfo[i].length != 0) {
//console.log(CalgaryBookingInfo[i][0].Company + " has bookings")
var SumTime = 0;
for (var j = 0; j < CalgaryBookingInfo[i].length; j++)
{
CalgaryNotNullBookings.push({
Company: CalgaryBookingInfo[i][j].Company,
Location: CalgaryBookingInfo[i][j].Location,
PaidHours: CalgaryBookingInfo[i][j].HoursPaid,
Start: CalgaryBookingInfo[i][j].Start,
End: CalgaryBookingInfo[i][j].End,
Time: CalgaryBookingInfo[i][j].Time,
Total: SumTime + CalgaryBookingInfo[i][j].Time
});
SumTime += CalgaryBookingInfo[i][j].Time;
}
CalgaryNotNullBookings.push({
Company: "",
Location: "",
PaidHours: "",
Start: "",
End: "",
Time: "",
Total: SumTime
});
}
}
console.log(CalgaryNotNullBookings);
//buildHtmlTable(RetreivedClients);
}
})
控制员职务职能:
[HttpPost]
public JsonResult ExportCalgary(List<ClientBookingInfo> e)
{
var status = false;
//string[] columns = { "Company", "Location", "PaidHours", "Start", "End", "Time" , "Total" };
//byte[] filecontent = ExcelExportHelper.ExportExcel(dataToConvert, "Technology", true, columns);
//return File(filecontent, ExcelExportHelper.ExcelContentType, "CalgaryClientInfo_" + DateTime.Now.Year+"_" + DateTime.Now.Month + ".xlsx");
ExcelPackage excel = new ExcelPackage();
var workSheet = excel.Workbook.Worksheets.Add("Sheet1");
workSheet.TabColor = System.Drawing.Color.Black;
workSheet.DefaultRowHeight = 12;
//Header of table
//
workSheet.Row(1).Height = 20;
workSheet.Row(1).Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
workSheet.Row(1).Style.Font.Bold = true;
workSheet.Cells[1, 1].Value = "Company";
workSheet.Cells[1, 2].Value = "Location";
workSheet.Cells[1, 3].Value = "PaidHours";
workSheet.Cells[1, 4].Value = "Start";
workSheet.Cells[1, 5].Value = "End";
workSheet.Cells[1, 6].Value = "Time";
workSheet.Cells[1, 7].Value = "Total";
//Body of table
//
int recordIndex = 2;
for(int i = 0; i < e.Count; i++)
{
workSheet.Cells[recordIndex, 1].Value = e[i].Company;
workSheet.Cells[recordIndex, 2].Value = e[i].Location;
workSheet.Cells[recordIndex, 3].Value = e[i].PaidHours;
workSheet.Cells[recordIndex, 4].Value = e[i].Start;
workSheet.Cells[recordIndex, 5].Value = e[i].End;
workSheet.Cells[recordIndex, 6].Value = e[i].Time;
workSheet.Cells[recordIndex, 7].Value = e[i].Total;
recordIndex++;
}
workSheet.Column(1).AutoFit();
workSheet.Column(2).AutoFit();
workSheet.Column(3).AutoFit();
workSheet.Column(4).AutoFit();
workSheet.Column(5).AutoFit();
workSheet.Column(6).AutoFit();
workSheet.Column(7).AutoFit();
string excelName = "CalgaryClientInfo_" + DateTime.Now.Year+"_" + DateTime.Now.Month;
using (var memoryStream = new MemoryStream())
{
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.AddHeader("content-disposition", "attachment; filename=" + excelName + ".xlsx");
excel.SaveAs(memoryStream);
memoryStream.WriteTo(Response.OutputStream);
Response.Flush();
Response.End();
status = true;
}
return new JsonResult { Data = new { status = status } };
}
提前谢谢!: 发布复杂数据时,应发送对象的JSON字符串化版本,同时将contentType指定为application/JSON 您可以使用JSON.stringify方法将数组转换为相应的JSON字符串
var data = [];
data.push({ Company: "Microsoft", Location: "Redmond" , Total:123 });
data.push({ Company: "UrbanScience", Location:"Detroit", Total:456 });
$.ajax({
type: "POST",
url: '@Url.Action("ExportCalgary")',
data: JSON.stringify(data),
contentType: "application/json",
success: function(data) {
console.log("data :", data);
// Do something with the response
},
error: function() {
alert('Failed');
}
});
现在,ModelBinder将能够正确地绑定来自ajax请求的数据,并且您的action方法参数中不会出现null
另一方面,通过ajax下载文件可能不起作用。考虑做一个正常的非Ajax表单提交给你的动作方法,它可以返回一个文件。另外,如果构建文件所需的数据在服务器代码中可用,比如说它在一个可以读取的db表中,我建议您将所需的最小数据(如uniqueId)发送到服务器,让服务器读取数据并使用此Id返回文件
若您可以将id传递给可以返回文件的操作方法,那个么您可以使用window.open方法从javascript调用它
或者将当前url设置为下载url
window.location.href = "/Documents/Download?id=2";
假设您有一个下载操作方法,它接受一个id参数并返回一个文件。调用ExportCalgary方法时,数据参数中有什么?是否从操作方法返回文件?正在尝试通过ajax进行文件下载吗?不要尝试通过ajax下载文件。执行普通表单提交对于工作模型绑定的ajax调用,您应该将数组的字符串化版本与application/json一起作为contentTypedata:json.stringifydata,contentType:application/json发送,我传递给该方法的数据是CalgaryNotNullBookings[]在前面的ajax调用中我推送到的数组。我只是尝试将数据发送到我的控制器,然后控制器将为我生成excel文件downloading@Shyju我试过了,当我调试时,我的控制器上的列表仍然是空的:谢谢提示:并帮助解决发送问题!!
var data = [];
data.push({ Company: "Microsoft", Location: "Redmond" , Total:123 });
data.push({ Company: "UrbanScience", Location:"Detroit", Total:456 });
$.ajax({
type: "POST",
url: '@Url.Action("ExportCalgary")',
data: JSON.stringify(data),
contentType: "application/json",
success: function(data) {
console.log("data :", data);
// Do something with the response
},
error: function() {
alert('Failed');
}
});
window.open("/Documents/Download?id=2");
window.location.href = "/Documents/Download?id=2";