This must be a dumb question.
I have a web API Rest on c# that have an endpoint to generate and download an excel file. I use NPOI library.
It works fine if the file is generated within the root of my site. But when I try to move my file to a folder, file name include folder and de %2F char. I suppose this is an URL encode problem, but don't know how to fix it. This is my code.
[AllowAnonymous]
[HttpGet("ExportExcel")]
public async Task<IActionResult> ExportExcel(int activos = 1, int idarticulo = -1, string filtro = "", string ordenar = "", int ordenarsentido = 1)
{
var memory = new MemoryStream();
var newFile = #"Export/Articulos.xlsx";
//IArticulosService articulosService = new ArticulosService(_validation.sConnectionString, _validation.sEmpresa);
var mycon = _validation.GetConnectionStringFromClientID("ClientId1");
IArticulosService articulosService = new ArticulosService(mycon, "Ciatema");
try
{
// Genero el excel con el listado
articulosService.ExportarExcel(newFile, activos, filtro, ordenar, ordenarsentido);
using (var stream = new FileStream(newFile, FileMode.Open))
{
await stream.CopyToAsync(memory);
}
memory.Position = 0;
return File(memory, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", newFile);
}
catch (QueryFormatException ex)
{
return BadRequest(ex.Message);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex);
return StatusCode(StatusCodes.Status500InternalServerError);
}
}
Donwload filename is: Export%2FArticulos.xlsx when i need it to be only Articulos.xlsx.
Thanks!
you should be passing file name only instead of complete path in your return File method like below
return File(memory, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", Path.GetFileName(newFile));
Related
With the reference of following StackOverflow suggestion,
Convert HTML to PDF in .NET
I tried to convert the HTML file to PDF using HtmlRenderer.PdfSharp but unfortunately it shows compatible error like below,
HtmlRendererCore.PdfSharpCore 1.0.1 is not compatible with netstandard2.0 (.NETStandard,Version=v2.0). Package HtmlRendererCore.PdfSharpCore 1.0.1 supports: netcoreapp2.0 (.NETCoreApp,Version=v2.0)
HtmlRenderer.Core 1.5.0.5 is not compatible with monoandroid90 (MonoAndroid,Version=v9.0). Package HtmlRenderer.Core 1.5.0.5 supports:
- net20 (.NETFramework,Version=v2.0)
- net30 (.NETFramework,Version=v3.0)
- net35-client (.NETFramework,Version=v3.5,Profile=Client)
- net40-client (.NETFramework,Version=v4.0,Profile=Client)
- net45 (.NETFramework,Version=v4.5)
HtmlRendererCore.PdfSharpCore 1.0.1 is not compatible with monoandroid90 (MonoAndroid,Version=v9.0). Package HtmlRendererCore.PdfSharpCore 1.0.1 supports: netcoreapp2.0 (.NETCoreApp,Version=v2.0)
And I tried with wkhtmltopdf too but it throws similar error in android and other platform projects.
My requirement is to convert the HTML file to PDF file only (no need to view the PDF file, just to save it in local path).
Can anyone please provide suggestions?
Note : Need open source suggestion :)
Awaiting for your suggestions !!!
Support to convert the HTML to PDF in Xamarin Forms
You can read the HTML as a stream and store it into local like below,
public static class FileManager
{
public static async Task<MemoryStream> DownloadFileAsStreamAsync(string url)
{
try
{
var stream = new MemoryStream();
using (var httpClient = new HttpClient())
{
var downloadStream = await httpClient.GetStreamAsync(new Uri(url));
if (downloadStream != null)
{
await downloadStream.CopyToAsync(stream);
}
}
return stream;
}
catch (Exception exception)
{
return null;
}
}
public static async Task<bool> DownloadAndWriteIntoNewFile(string url, string fileName)
{
var stream = await DownloadFileAsStreamAsync(url);
if (stream == null || stream.Length == 0)
return false;
var filePath = GetFilePath(fileName);
if (!File.Exists(filePath))
return false;
File.Delete(filePath);
// Create file.
using (var createdFile = File.Create(filePath))
{
}
// Open and write into file.
using (var openFile = File.Open(filePath, FileMode.Open, FileAccess.ReadWrite))
{
stream.WriteTo(openFile);
}
return true;
}
public static string GetFilePath(string fileName)
{
var filePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), fileName);
return filePath;
}
public static void WriteAsText(string filePath, string contents)
{
File.WriteAllText(filePath, contents);
}
public static string ReadAsText(string filePath)
{
return File.ReadAllText(filePath);
}
}
You can read a stored pdf file and displayed using webview like below,
private async void HtmlToPDF()
{
await FileManager.DownloadAndWriteIntoNewFile("https://www.google.co.in/?gws_rd=ssl", "SavePDF.pdf");
var filePath = FileManager.GetFilePath("SavePDF.pdf");
var pdfString = FileManager.ReadAsText(filePath);
var webView = new WebView
{
Source = new HtmlWebViewSource
{
Html = pdfString
}
};
this.Content = webView;
}
And the output below,
Likewise, you can save HTML as PDF and do what you want..
you can use the HtmlToPdfConverter
private void ConvertUrlToPdf()
{
try {
String serverIPAddress = serverIP.Text;
uint serverPortNumber = uint.Parse (serverPort.Text);
// create the HTML to PDF converter object
HtmlToPdfConverter htmlToPdfConverter = new HtmlToPdfConverter (serverIPAddress, serverPortNumber);
// set service password if necessary
if (serverPassword.Text.Length > 0)
htmlToPdfConverter.ServicePassword = serverPassword.Text;
// set PDF page size
htmlToPdfConverter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
// set PDF page orientation
htmlToPdfConverter.PdfDocumentOptions.PdfPageOrientation = PdfPageOrientation.Portrait;
// convert the HTML page from given URL to PDF in a buffer
byte[] pdfBytes = htmlToPdfConverter.ConvertUrl (urlToConvert.Text);
string documentsFolder = Environment.GetFolderPath (Environment.SpecialFolder.MyDocuments);
string outPdfFile = System.IO.Path.Combine (documentsFolder, "EvoHtmlToPdf.pdf");
// write the PDF buffer in output file
System.IO.File.WriteAllBytes (outPdfFile, pdfBytes);
// open the PDF document in the default PDF viewer
UIDocumentInteractionController pdfViewer = UIDocumentInteractionController.FromUrl (Foundation.NSUrl.FromFilename (outPdfFile));
pdfViewer.PresentOpenInMenu (this.View.Frame, this.View, true);
} catch (Exception ex) {
UIAlertView alert = new UIAlertView ();
alert.Title = "Error";
alert.AddButton ("OK");
alert.Message = ex.Message;
alert.Show ();
}
}
another
you can see thisurl
Hello im trying to access an image from a post request with MultipartFormDataStreamProvider.
So far it seems successful other than when i try to create a file steam from the local name, the file is then in use. How do i get the current open stream to read the file, or get the old stream to close?
*Note: Please ignore the not so great try catch.
What I have so far:
[ResponseType(typeof(AdminImage))]
public IHttpActionResult PostAdminImage([FromUri]AdminImage adminImage)
{
if (!Request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
string root = HttpContext.Current.Server.MapPath("~/App_Data");
var provider = new MultipartFormDataStreamProvider(root);
try
{
Request.Content.ReadAsMultipartAsync(provider);
foreach (MultipartFileData file in provider.FileData)
{
FileStream fs = new FileStream(file.LocalFileName, FileMode.Open);
adminImage.ImageContent = adminImage.ImageToByteArray(Image.FromStream(fs));
}
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
db.AdminImages.Add(adminImage);
db.SaveChanges();
}
catch (Exception ex)
{
return InternalServerError();
}
return CreatedAtRoute("DefaultApi", new { id = adminImage.Id }, adminImage);
}
Error while uploading file method in Client Object Model + Sharepoint 2010. Once the file got uploaded. After that though the code compiles with no error
I get the error while executing
"{"Value does not fall within the expected range."}
{System.Collections.Generic.SynchronizedReadOnlyCollection}
I have a method which takes care of functionality to upload files
///////////////////////////////////////////////////////////////////////////////////////////
public void Upload_Click(string documentPath, byte[] documentStream)
{
String sharePointSite = "http://cvgwinbasd003:28838/sites/test04";
String documentLibraryUrl = sharePointSite +"/"+ documentPath.Replace('\\','/');
////////////////////////////////////////////////////////////////////
//Get Document List
List documentsList = clientContext.Web.Lists.GetByTitle("Doc1");
var fileCreationInformation = new FileCreationInformation();
//Assign to content byte[] i.e. documentStream
fileCreationInformation.Content = documentStream;
//Allow owerwrite of document
fileCreationInformation.Overwrite = true;
//Upload URL
fileCreationInformation.Url = documentLibraryUrl;
Microsoft.SharePoint.Client.File uploadFile = documentsList.RootFolder.Files.Add(
fileCreationInformation);
//uploadFile.ListItemAllFields.Update();
clientContext.ExecuteQuery();
}
/////////////////////////////////////////////////////////////////////////////////////////////////
In the MVC 3.0 application in the controller I have defined the following method to invoke the upload method.
//////////////////////////////////////////////////////////////////////////////////////////////////
public ActionResult ProcessSubmit(IEnumerable<HttpPostedFileBase> attachments)
{
System.IO.Stream uploadFileStream=null;
byte[] uploadFileBytes;
int fileLength=0;
foreach (HttpPostedFileBase fileUpload in attachments)
{
uploadFileStream = fileUpload.InputStream;
fileLength=fileUpload.ContentLength;
}
uploadFileBytes= new byte[fileLength];
uploadFileStream.Read(uploadFileBytes, 0, fileLength);
using (DocManagementService.DocMgmtClient doc = new DocMgmtClient())
{
doc.Upload_Click("Doc1/Doc2/Doc2.1/", uploadFileBytes);
}
return RedirectToAction("SyncUploadResult");
}
//////////////////////////////////////////////////////////////////////////////////////////////////
Please help me to locate the error
I think your documentLibraryUrl needs to be relative. This is working for me with Sharepoint 2013
[HttpPost]
[ValidateAntiForgeryToken]
[SharePointContextFilter]
public ActionResult Upload()
{
if (Request.Files.Count > 0)
{
HttpPostedFileBase file = Request.Files[0];
if (file != null && file.ContentLength > 0)
{
var fileName = Path.GetFileName(file.FileName);
var spContext = SharePointContextProvider.Current.GetSharePointContext(HttpContext);
using (var clientContext = spContext.CreateUserClientContextForSPHost())
{
if (clientContext != null)
{
FileCreationInformation newFile = new FileCreationInformation();
using (MemoryStream ms = new MemoryStream())
{
file.InputStream.CopyTo(ms);
byte[] array = ms.GetBuffer();
newFile.Content = array;
}
List docs = clientContext.Web.Lists.GetByTitle("Documents");
Folder folder = docs.RootFolder;
clientContext.Load(folder);
clientContext.ExecuteQuery();
newFile.Url = docs.RootFolder.ServerRelativeUrl + "/" + fileName;
Microsoft.SharePoint.Client.File uploadFile = docs.RootFolder.Files.Add(newFile);
clientContext.Load(uploadFile);
clientContext.ExecuteQuery();
//Set the metadata
Microsoft.SharePoint.Client.ListItem item = uploadFile.ListItemAllFields;
string docTitle = string.Empty;
item["Title"] = docTitle;
item.Update();
clientContext.ExecuteQuery();
}
}
}
}
return RedirectToAction("Index", new { SPHostUrl = SharePointContext.GetSPHostUrl(HttpContext.Request).AbsoluteUri });
}
I am trying to set up file upload example using JAX RS. I could set up the project and successfully upload file in a server location. But i get the following error when file size is more than 10KB (weird!!)
com.sun.jersey.api.client.UniformInterfaceException: POST http://localhost:9090/DOAFileUploader/rest/file/upload returned a response status of 400
at com.sun.jersey.api.client.WebResource.handle(WebResource.java:607)
at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74)
at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:507)
at com.sony.doa.rest.client.DOAClient.upload(DOAClient.java:75)
at com.sony.doa.rest.client.DOAMain.main(DOAMain.java:34)
I am new to JAX RS and i'm not sure what exactly the issue is. Do i need to set some parameters client side or server side (like size, timeout etc)?
This is the client side code calling webservice:
public void upload() {
File file = new File(inputFilePath);
FormDataMultiPart part = new FormDataMultiPart();
part.bodyPart(new FileDataBodyPart("file", file, MediaType.APPLICATION_OCTET_STREAM_TYPE));
WebResource resource = Client.create().resource(url);
String response = resource.type(MediaType.MULTIPART_FORM_DATA_TYPE).post(String.class, part);
System.out.println(response);
}
This is the server side code:
#Path("/file")
public class UploadFileService {
#POST
#Path("/upload")
#Consumes(MediaType.MULTIPART_FORM_DATA)
public Response uploadFile(
#FormDataParam("file") InputStream uploadedInputStream,
#FormDataParam("file") FormDataContentDisposition fileDetail) {
String uploadedFileLocation = "e://uploaded/"
+ fileDetail.getFileName();
writeToFile(uploadedInputStream, uploadedFileLocation);
String output = "File uploaded to : " + uploadedFileLocation;
return Response.status(200).entity(output).build();
}
private void writeToFile(InputStream uploadedInputStream,
String uploadedFileLocation) {
try {
OutputStream out = new FileOutputStream(new File(
uploadedFileLocation));
int read = 0;
byte[] bytes = new byte[16000];
out = new FileOutputStream(new File(uploadedFileLocation));
while ((read = uploadedInputStream.read(bytes)) != -1) {
out.write(bytes, 0, read);
}
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
} } }
Please let me know what settings i have to change for file sizes greater than 10KB?
Thanks!
I use org.apache.commons.fileupload.servlet.ServletFileUpload in a Jersey context, and it works fine., and yes, it set the max file size, sorry I missed this before.
here is a snipet of code I use (this is a multipart form, so there are other fields along with the file)
private LibraryUpload parseLibraryUpload(HttpServletRequest request) {
LibraryUpload libraryUpload;
File libraryZip = null;
String name = null;
String version = null;
ServletFileUpload upload = new ServletFileUpload();
upload.setFileSizeMax(MAX_FILE_SIZE);
FileItemIterator iter;
try {
iter = upload.getItemIterator(request);
while (iter.hasNext()) {
....
if (item.isFormField()) {
....
}else{
BufferedInputStream buffer = new BufferedInputStream(stream);
buffer.mark(MAX_FILE_SIZE);
libraryZip = File.createTempFile("fromUpload", null);
IOUtils.copy(buffer, new FileOutputStream(libraryZip));
...
}
I have encountered the same problem with Jersey. I have activated jersey trace but nothing help me.
I have changed the library by an apache Library and I see than the problem with linked to a repository for temporary files for tomcat. The repository was not exist. For files under 10k, the repository was not used.
So, after the repository creation, I used jersey library and all works fine.
I am developing an testing automation tool in linux system. I dont have write permissions for tomcat directory which is located on server. I need to develop an application where we can select an excel file so that the excel content is automatically stored in already existing table.
For this pupose i have written an form to select an file which is posted to a servlet CommonsFileUploadServlet where i am storing the uploaded file and then calling ReadExcelFile class which reads the file path and create a vector for data in file which is used to sstore data in database.
My problem is that i am not able to store the uploaded file in directory. Is it necessary to have permission rights for tomcat to do this. Can i store the file on my system and pass the path to ReadExcelFile.class
Please guide me
My code is as follows:
Form in jsp
CommonsFileUploadServlet class code:
public void init(ServletConfig config) throws ServletException {
super.init(config);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
PrintWriter out = response.getWriter();
response.setContentType("text/plain");
out.println("<h1>Servlet File Upload Example using Commons File Upload</h1>");
DiskFileItemFactory fileItemFactory = new DiskFileItemFactory ();
fileItemFactory.setSizeThreshold(1*1024*1024);
fileItemFactory.setRepository(new File("/home/example/Documents/Project/WEB-INF/tmp"));
ServletFileUpload uploadHandler = new ServletFileUpload(fileItemFactory);
try {
List items = uploadHandler.parseRequest(request);
Iterator itr = items.iterator();
while(itr.hasNext()) {
FileItem item = (FileItem) itr.next();
if(item.isFormField()) {
out.println("File Name = "+item.getFieldName()+", Value = "+item.getString());
} else {
out.println("Field Name = "+item.getFieldName()+
", File Name = "+item.getName()+
", Content type = "+item.getContentType()+
", File Size = "+item.getSize());
File file = new File("/",item.getName());
String realPath = getServletContext().getRealPath("/")+"/"+item.getName();
item.write(file);
ReadExcelFile ref= new ReadExcelFile();
String res=ref.insertReq(realPath,"1");
}
out.close();
}
}catch(FileUploadException ex) {
log("Error encountered while parsing the request",ex);
} catch(Exception ex) {
log("Error encountered while uploading file",ex);
}
}
}
ReadExcelFile code:
public static String insertReq(String fileName,String sno) {
//Read an Excel File and Store in a Vector
Vector dataHolder=readExcelFile(fileName,sno);
//store the data to database
storeCellDataToDatabase(dataHolder);
}
public static Vector readExcelFile(String fileName,String Sno)
{
/** --Define a Vector
--Holds Vectors Of Cells
*/
Vector cellVectorHolder = new Vector();
try{
/** Creating Input Stream**/
//InputStream myInput= ReadExcelFile.class.getResourceAsStream( fileName );
FileInputStream myInput = new FileInputStream(fileName);
/** Create a POIFSFileSystem object**/
POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput);
/** Create a workbook using the File System**/
HSSFWorkbook myWorkBook = new HSSFWorkbook(myFileSystem);
int s=Integer.valueOf(Sno);
/** Get the first sheet from workbook**/
HSSFSheet mySheet = myWorkBook.getSheetAt(s);
/** We now need something to iterate through the cells.**/
Iterator rowIter = mySheet.rowIterator();
while(rowIter.hasNext())
{
HSSFRow myRow = (HSSFRow) rowIter.next();
Iterator cellIter = myRow.cellIterator();
Vector cellStoreVector=new Vector();
short minColIndex = myRow.getFirstCellNum();
short maxColIndex = myRow.getLastCellNum();
for(short colIndex = minColIndex; colIndex < maxColIndex; colIndex++)
{
HSSFCell myCell = myRow.getCell(colIndex);
if(myCell == null)
{
cellStoreVector.addElement(myCell);
}
else
{
cellStoreVector.addElement(myCell);
}
}
cellVectorHolder.addElement(cellStoreVector);
}
}catch (Exception e){e.printStackTrace(); }
return cellVectorHolder;
}
private static void storeCellDataToDatabase(Vector dataHolder)
{
Connection conn;
Statement stmt;
String query;
try
{
// get connection and declare statement
int z;
for (int i=1;i<dataHolder.size(); i++)
{
z=0;
Vector cellStoreVector=(Vector)dataHolder.elementAt(i);
String []stringCellValue=new String[10];
for (int j=0; j < cellStoreVector.size();j++,z++)
{
HSSFCell myCell = (HSSFCell)cellStoreVector.elementAt(j);
if(myCell==null)
stringCellValue[z]=" ";
else
stringCellValue[z] = myCell.toString();
}
try
{
//inserting into database
}
catch(Exception error)
{
String e="Error"+error;
System.out.println(e);
}
}
stmt.close();
conn.close();
System.out.println("success");
}
catch(Exception error)
{
String e="Error"+error;
System.out.println(e);
}
}
POI will happily open from an old InputStream, it needn't be a File one.
I'd suggest you look at the Commons FileUpload Streaming API and consider just passing the excel part straight to POI without touching the disk