[英]Exporting OpenXML created Excel Spreadsheet to client side
我正在嘗試獲取API,以開始下載已創建的excel電子表格。 雖然,我似乎遇到了一些麻煩。 我也嘗試過將電子表格內存流的字節數組發送到前端,然后從那里去,但是excel文件已損壞,並且不包含任何數據。
控制器:
[HttpPost]
[Route("CreateExcelDocument")]
public ActionResult CreateExcelDocument([FromBody] List<BarBillList> model)
{
try
{
byte[] tmp;
using (ExcelController ex = new ExcelController())
{
tmp = ex.createExcelSpreadsheet(barBillExport);
}
string fileName = "xxx.xlsx";
return File(tmp, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", fileName);
}
catch (Exception e)
{
return null;
}
}
具有電子表格創建方法的ExcelController類:
public byte[] createExcelSpreadsheet(List<BarBillList> barBillExport)
{
DateTime today = DateTime.Today;
using (MemoryStream ms = new MemoryStream())
{
using (SpreadsheetDocument document = SpreadsheetDocument.Create(ms, SpreadsheetDocumentType.Workbook))
{
//Creating the initial document
WorkbookPart workbookPart = document.AddWorkbookPart();
workbookPart.Workbook = new Workbook();
WorksheetPart worksheetPart = workbookPart.AddNewPart<WorksheetPart>();
worksheetPart.Worksheet = new Worksheet();
workbookPart.Workbook.Save();
//Styling the doucment
WorkbookStylesPart stylesPart = workbookPart.AddNewPart<WorkbookStylesPart>();
stylesPart.Stylesheet = GenerateStyleSheet();
stylesPart.Stylesheet.Save();
//Adding width to the columns
DocumentFormat.OpenXml.Spreadsheet.Columns columns = new DocumentFormat.OpenXml.Spreadsheet.Columns();
columns.Append(new DocumentFormat.OpenXml.Spreadsheet.Column() { Min = 1, Max = 6, Width = 20, CustomWidth = true });
worksheetPart.Worksheet.Append(columns);
//Creating the worksheet part to add the data to
Sheets sheets = workbookPart.Workbook.AppendChild(new Sheets());
Sheet sheet = new Sheet() { Id = workbookPart.GetIdOfPart(worksheetPart), SheetId = 1, Name = "BarBill" };
sheets.Append(sheet);
SheetData sheetData = worksheetPart.Worksheet.AppendChild(new SheetData());
//Creating the first Header Row
Row row = new Row();
row.Append(
ConstructCell("Name", CellValues.String, true),
ConstructCell("Last Payment Date", CellValues.String, true),
ConstructCell("Last Payment Amount", CellValues.String, true),
ConstructCell("Current Balance", CellValues.String, true));
sheetData.AppendChild(row);
//Appending the data into their respective columns
foreach (var ent in barBillExport)
{
row = new Row();
row.Append(
ConstructCell(ent.Name.ToString(), CellValues.String, false),
ConstructCell((ent.LastPaymentDate.ToString().Length > 0) ? ent.LastPaymentDate.ToString() : "", CellValues.String, false),
ConstructCell((ent.LastPayment.ToString().Length > 0) ? ent.LastPayment.ToString() : "", CellValues.String, false),
ConstructCell((ent.TotalBalance.ToString().Length > 0) ? ent.TotalBalance.ToString() : "", CellValues.String, false));
sheetData.AppendChild(row);
}
worksheetPart.Worksheet.Save();
}
return ms.ToArray();
}
}
編輯
前端服務:
createExcelDocument(model: BillList[]): any {
return this.http.post(this.getBarBillsUrl + "/CreateExcelDocument", model)
.map(this.helper.extractData)
.catch(this.helper.handleError);
}
我知道映射器不需要在那里。 但是我將其保留在那里應該將字節數組傳遞到前面並從那里開始。
對此事的任何指導或指導將不勝感激。
謝謝。
為有興趣或面臨類似問題的人找到解決方案(請參閱以下作者答案)
我將{ responseType: ResponseContentType.Blob }
到TypeScript中的服務調用中。
然后,它給我返回了電子表格的內容。 從那里,我在打字稿中通過另一種方法運行它:
private saveAsBlob(data: any) {
const year = this.today.getFullYear();
const month = this.today.getMonth();
const date = this.today.getDate();
const dateString = year + '-' + month + '-' + date;
const file = new File([data], 'BarBill ' + dateString + '.xlsx',
{ type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' });
FileSaver.saveAs(file);
}
然后獲取我的文件以下載客戶端。
非常感謝大家。 尤其是答案的作者。
您需要告訴Angular響應不是JSON格式,因此它不會嘗試解析它。 嘗試將代碼更改為:
createExcelDocument(model: BillList[]): any {
return this.http.post(this.getBarBillsUrl + "/CreateExcelDocument",
model, { responseType: ResponseContentType.Blob })
.map(this.helper.extractData)
.catch(this.helper.handleError);
}
上面的代碼為二進制格式,但是對於excel文件,您應該使用以下代碼:
const httpOptions = {
headers: new HttpHeaders({ 'responseType': 'ResponseContentType.Blob',
'Content-Type': 'application/vnd.ms-excel'})};
createExcelDocument(model: BillList[]): any {
return this.http.post(this.getBarBillsUrl + "/CreateExcelDocument",
model, httpOptions )
.map(this.helper.extractData)
.catch(this.helper.handleError);
}
您的“返回ms.ToArray();” 行需要在使用中移動,並可能添加“ document.Close();”:
public byte[] createExcelSpreadsheet(List<BarBillList> barBillExport)
{
DateTime today = DateTime.Today;
using (MemoryStream ms = new MemoryStream())
{
using (SpreadsheetDocument document = SpreadsheetDocument.Create(ms, SpreadsheetDocumentType.Workbook))
{
//Creating the initial document
...
//Styling the doucment
...
//Adding width to the columns
...
//Creating the worksheet part to add the data to
...
SheetData sheetData = worksheetPart.Worksheet.AppendChild(new SheetData());
//Creating the first Header Row
...
//Appending the data into their respective columns
foreach (var ent in barBillExport)
{
...
}
worksheetPart.Worksheet.Save();
document.Close();
return ms.ToArray();
}
}
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.