我正在使用这篇帖子中第一个答案的方法:如何从HttpPostedFile创建字节数组,但是由于某种原因它不能处理.docx文件。
//viewmodel.File is HttpPostedFileBase
byte[] fileData;
using (var binaryReader = new BinaryReader(viewModel.File.InputStream))
{
fileData = binaryReader.ReadBytes(viewModel.File.ContentLength);
}
.docx文件的fileData
显示为{byte[0]}
,但它可以与pdf、excel文件(xlsx)、2007年之前的Word文件(doc)和图像一起使用(即值大于零)。 将其保存到数据库中,文件数据是 0x
。
如何从HttpInputStream获取.docx文件的字节数组?
更新
我的web.config已配置为
<httpRuntime targetFramework="4.5" maxRequestLength="102400" />
这段代码可以处理大于4MB的xslx文件,但是小于80KB的docx文件无法处理。
更新2
我可以使用这里的方法来填充fileData。
byte[] fileData = new byte[viewModel.File.ContentLength];
viewModel.File.InputStream.Read(fileData, 0, viewModel.File.ContentLength);
但如果我将该字节数组保存到数据库并尝试写入文件,则会严重损坏。在这种情况下保存到数据库中看起来像是0x00000000000000000000000...
更新3
以下是整个控制器方法,尽管我认为看到整个内容并不是必要的:
[HttpPost]
public ActionResult SaveChangeFile(AttachmentFormViewModel viewModel)
{
if (viewModel.File == null)
return Json(new { success = false, message = "No file was found, please select a file and try again." }, "text/x-json",
JsonRequestBehavior.DenyGet);
try
{
//Validate that the right kind of File has been uploaded
OperationResponse response = _attachmentProcessor.ValidateAttachmentContentType(viewModel.File, (ChangeFileTypeEnum)viewModel.FileType);
if (!response.IsSuccess)
return Json(new { success = response.IsSuccess, message = response.Message }, "text/x-json", JsonRequestBehavior.DenyGet);
UpdateProjectFromCostCalculatorRequest projectValues = null;
Workbook workbook = null;
Document document = null;
if (_attachmentProcessor.IsWorkbook(viewModel.File))
workbook = new Workbook(viewModel.File.InputStream);
if (_attachmentProcessor.IsDocument(viewModel.File))
document = new Document(viewModel.File.InputStream);
var filename = Path.GetFileName(viewModel.File.FileName);
//if cost calc, validate that the values are correct and update related project
switch ((ChangeFileTypeEnum)viewModel.FileType)
{
case ChangeFileTypeEnum.CostCalculator:
response = _attachmentProcessor.ValidateCostCalculator(workbook, filename);
if (response.IsSuccess)
projectValues = _attachmentProcessor.GetDataFromCostCalculator(workbook);
break;
case ChangeFileTypeEnum.DataValidation:
response = _attachmentProcessor.ValidateDataValidation(workbook);
break;
case ChangeFileTypeEnum.WorkPaper:
response = _attachmentProcessor.ValidateWorkPaper(document);
break;
}
//return error message if any of the validations above failed
if (!response.IsSuccess)
return Json(new { success = response.IsSuccess, message = response.Message }, "text/x-json", JsonRequestBehavior.DenyGet);
//get the file from the stream and put into a byte[] for saving the database
byte[] fileData;
using (var binaryReader = new BinaryReader(viewModel.File.InputStream))
{
fileData = binaryReader.ReadBytes(viewModel.File.ContentLength);
}
var file = new ChangeFile
{
ChangeRequestID = viewModel.ChangeRequestId,
ChangeFileTypeID = viewModel.FileType,
File = fileData,
Filename = filename,
ContentType = viewModel.File.ContentType,
CreatedBy = User.UserNameWithoutDomain(),
UpdatedBy = User.UserNameWithoutDomain(),
CreatedDate = DateTime.Now,
UpdatedDate = DateTime.Now
};
_changeRequestService.SaveChangeFile(file);
var log = new ChangeFileImportLog { CreatedDate = DateTime.Now };
switch ((ChangeFileTypeEnum)viewModel.FileType)
{
case ChangeFileTypeEnum.CostCalculator:
var project = _changeRequestService.GetChangeProjectByPsrs(file.ChangeRequestID, projectValues.PsrsNumber);
if (project != null)
{
_attachmentProcessor.UpdateChangeProjectWithProjectValues(project, projectValues);
log.NumberOfErrors = 0;
log.NumberOfSegmentChanges = 0;
log.NumberOfWarnings = 0;
}
else
{
log.NumberOfWarnings = 1;
log.Warnings =
String.Format(
"There is no project on this Change Request with PSRS \"{0}\". If there was, the new cost would be updated with \"{1:C0}\"",
projectValues.PsrsNumber, projectValues.Cost);
}
break;
case ChangeFileTypeEnum.DataValidation:
log = _attachmentProcessor.CreateChangeSegmentsFromDataValidation(workbook, file.ChangeRequestID, file.ChangeFileID, User);
break;
case ChangeFileTypeEnum.WorkPaper:
log = _attachmentProcessor.UpdateChangeProjectsFromWorkPaper(document, file.ChangeRequestID, file.ChangeFileID,
User);
break;
}
log.CreatedBy = User.UserNameWithoutDomain();
log.CreatedDate = DateTime.Now;
log.UpdatedBy = User.UserNameWithoutDomain();
log.UpdatedDate = DateTime.Now;
_changeRequestService.SaveChangeFileImportLog(log, file.ChangeFileID);
_changeRequestService.Commit();
return Json(new { success = response.IsSuccess, message = response.Message }, "text/x-json", JsonRequestBehavior.DenyGet);
}
catch (Exception ex)
{
return Json(new { success = false, message = String.Format("A system error was encountered: {0}", ex) }, "text/x-json", JsonRequestBehavior.DenyGet);
}
}
<httpRuntime targetFramework="4.5" maxRequestLength="102400" />
。 - wilsjd