IllegalException at destination folder path
Here is my code am downloading gif images from url
#Override
protected Void doInBackground(String... strings) {
String uRl = strings[0];
DownloadManager mgr = (DownloadManager) context.getSystemService(DOWNLOAD_SERVICE);
Uri downloadUri = Uri.parse(uRl);
DownloadManager.Request request = new DownloadManager.Request(
downloadUri);
request.setAllowedNetworkTypes(
DownloadManager.Request.NETWORK_WIFI
| DownloadManager.Request.NETWORK_MOBILE)
.setAllowedOverRoaming(false).setTitle("Demo")
.setDescription("Something useful. No, really.")
.setTitle("Downloading giphy file")
.setDestinationInExternalPublicDir("/IslamicGif", "fileName.gif");
mgr.enqueue(request);
return null;
}
Actually i have not manage the directory path perfectly so the error comes its
working with this path now.
File mydownload = new File (Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)+ "/myFolder");
if (!mydownload.exists()){
mydownload.mkdir();
}
String url = sUrl[0];
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
}
request.setDestinationInExternalPublicDir(mydownload.getAbsolutePath(),"Myfile.extension");
DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
manager.enqueue(request);
Related
I am creating an asp.net Core API with an endpoint to export data as excel file.
I have added the nuget package EPPlus.Core.
This is my code so far:
using OfficeOpenXml;
...
Public class DataService
{
...
public Byte[] Export(ExportRequest request){
var data = _repository(request);
using (var package = new ExcelPackage())
{
package.Workbook.Properties.Title = "Persons";
var worksheet = package.Workbook.Worksheets.Add("Persons");
//Headers
worksheet.Cells[1, 1].Value = "Id";
worksheet.Cells[1, 2].Value = "Name";
//Values
var row = 2;
foreach (var person in data.Persons)
{
worksheet.Cells[row, 1].Value = person.Id;
worksheet.Cells[row, 2].Value = person.Name;
row++;
}
return package.GetAsByteArray();
}
}
public class PersonController : Controller
{
[HttpPost]
[Route("{version:apiVersion}/[controller]/Export")]
[SwaggerResponse(400, typeof(Exception), "Error in request")]
[SwaggerResponse(500, typeof(Exception), "Error on server")]
public IActionResult Export([FromBody] ExportRequest request)
{
Byte[] byteArray = _projectService.ExportRegistrations(request);
if (byteArray != null)
{
return File(byteArray, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "persons.xlsx");
}
return BadRequest("Failure");
}
}
I test my API using swagger and get a file downloaded named persons.xlsx.
But I am not able to open it.
I get the two following promts:
We found a problem in some of the contents of "persons.xlsx", should we try to restore as much as possible? If you trust the source of the workbook, click Yes.
The file "persons.xlsx" can not be opened because the file format or file type name is invalid. Verify that the file is not corrupted and that the file type name matches the file format.
And then an empty excel document.
i have also facing the same problem,
The workaround is directly open the url via browser or using postman.
while I was trying to upload an excel file with kendo ui I found a code on the internet. It is using a keyword named "Constants" but this keyword does not recognize the ".xls" file extension. I am stuck at this and did some research but have no answer to solve this. Here is my code:
public ActionResult Submit(IEnumerable<HttpPostedFileBase> files)
{
if(files!= null)
{
string fileName;
string filePath;
string fileExtension;
foreach(var f in files)
{
//Set file details
SetFileDetails(f, out fileName, out filePath, out fileExtension);
if(fileExtension == Constants.xls || fileExtension == Constants.xlsx)
{
//Save the uploaded file to app folder
string savedExcelFiles = Constants.UploadedFolder + fileName;
f.SaveAs(Server.MapPath(savedExcelFiles));
ReadDataFromExcelFiles(savedExcelFiles);
}
else
{
//file not supported send alert
}
}
}
return RedirectToActionPermanent("Index","Connect");
}
private static void SetFileDetails(HttpPostedFileBase f,out string fileName,out string filePath,out string fileExtension)
{
fileName=Path.GetFileName(f.FileName);
fileExtension=Path.GetExtension(f.FileName);
filePath = Path.GetFullPath(f.FileName);
}
private void ReadDataFromExcelFiles(string savedExcelFiles)
{
var connectionString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=Excel 12.0;",Server.MapPath(savedExcelFiles));
//fill the DataSet by the sheets
var adapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]",connectionString);
var ds = new DataSet();
List<UploadExcel> uploadExl = new List<UploadExcel>();
adapter.Fill(ds,"Subscriber");
DataTable data=ds.Tables["Subscriber"];
GetSetUploadExcelData(uploadExl,data);
}
private static void GetSetUploadExcelData (List<UploadExcel> uploadExl,DataTable data)
{
for(int i=0;i<data.Rows.Count-1;i++)
{
UploadExcel NewUpload = new UploadExcel();
NewUpload.ID = Convert.ToInt16(data.Rows[i]["ID"]);
NewUpload.CostCenter = Convert.ToString(data.Rows[i]["CostCenter"]);
NewUpload.FirstName = Convert.ToString(data.Rows[i]["FirstName"]);
NewUpload.LastName = Convert.ToString(data.Rows[i]["LastName"]);
NewUpload.MobileNo = Convert.ToString(data.Rows[i]["MobileNo"]);
NewUpload.EmailID = Convert.ToString(data.Rows[i]["EmailID"]);
NewUpload.Services = Convert.ToString(data.Rows[i]["Services"]);
NewUpload.UsageType = Convert.ToString(data.Rows[i]["UsageType"]);
NewUpload.Network = Convert.ToString(data.Rows[i]["Network"]);
NewUpload.UsageIncluded = Convert.ToInt16(data.Rows[i]["UsageIncluded"]);
NewUpload.Unit = Convert.ToString(data.Rows[i]["Unit"]);
uploadExl.Add(NewUpload);
}
}
}
I suspect that the Constants.xls relates to a static class or enum that the original code author is using to hold the .xls/.xlsx extensions.
If you create a constants class something like:
public static class Constants
{
public static string xls = "xls";
public static string xlsx = "xlsx";
}
This would then should help.
If you need any more assistance then please let me know.
edit: Just reviewing the code it seems they are also putting in constant mapping for the uploadfolder location as well so I suspect this is just a static class rather than an enum with application specific details. in a way a bit like using the appSettings within webconfig
I our app (Xamarin C#) we download files from a server. At the end of a succeful download we get the URI to the newly-downloaded file and from the URI we get the file path:
Android.Net.Uri uri = downloadManager.GetUriForDownloadedFile(entry.Value);
path = u.EncodedPath;
In Android 4.4.2 and in Android 5 the uri and path look like this:
uri="file:///storage/emulated/0/Download/2.zip"
path = u.EncodedPath ="/storage/emulated/0/Download/2.zip"
We then use path to process the file.
The problem is that in Android 6 (on a real Nexus phone) we get a completely different uri and path:
uri="content://downloads/my_downloads/2802"
path="/my_downloads/2802"
This breaks my code by throwing a FileNotFound exception. Note that the downloaded file exists and is in the Downloads folder.
How can I use the URI I get from Android 6 to get the proper file path so I can to the file and process it?
Thank you,
donescamillo#gmail.com
I didn't get your actual requirement but it looks like you want to process file content. If so it can be done by reading the file content by using file descriptor of downloaded file. Code snippet as
ParcelFileDescriptor parcelFd = null;
try {
parcelFd = mDownloadManager.openDownloadedFile(downloadId);
FileInputStream fileInputStream = new FileInputStream(parcelFd.getFileDescriptor());
} catch (FileNotFoundException e) {
Log.w(TAG, "Error in opening file: " + e.getMessage(), e);
} finally {
if(parcelFd != null) {
try {
parcelFd.close();
} catch (IOException e) {
}
}
}
But I am also looking to move or delete that file after processing.
May you an build your URI with the download folder :
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).toURI();
It's work. #2016.6.24
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals( action)) {
DownloadManager downloadManager = (DownloadManager)context.getSystemService(Context.DOWNLOAD_SERVICE);
long downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, 0);
DownloadManager.Query query = new DownloadManager.Query();
query.setFilterById(downloadId);
Cursor c = downloadManager.query(query);
if(c != null) {
if (c.moveToFirst()) {
int columnIndex = c.getColumnIndex(DownloadManager.COLUMN_STATUS);
if (DownloadManager.STATUS_SUCCESSFUL == c.getInt(columnIndex)) {
String downloadFileUrl = c.getString(c.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
startInstall(context, Uri.parse(downloadFileUrl));
}
}
c.close();
}
}
}
private boolean startInstall(Context context, Uri uri) {
if(!new File( uri.getPath()).exists()) {
System.out.println( " local file has been deleted! ");
return false;
}
Intent intent = new Intent();
intent.addFlags( Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction( Intent.ACTION_VIEW);
intent.setDataAndType( uri, "application/vnd.android.package-archive");
context.startActivity( intent);
return true;
}
I've been trying to upload a file to the Azure storage container.
When I run my web app locally, if file is not in the web site root I get an error:
Could not find file 'C:\Program Files (x86)\IIS Express\test.txt'.
If I copy the file to the web app root folder, it works fine.
Running web app on the cloud I get an error:
Could not find file 'D:\Windows\system32\test.txt'.
I can't get the full local file path from HttpPostedFileBase object.
The code:
private string UploadFile(HttpPostedFileBase file, string folder)
{
try
{
var date = DateTime.UtcNow.ToString("yyyyMMdd-hhmmss-");
var fileName = Path.GetFileName(file.FileName);
CloudStorageAccount storageAccount = CloudStorageAccount.Parse("DefaultEndpointsProtocol=http;AccountName=test;AccountKey=asdfasfasdasdf");
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
CloudBlobContainer container = blobClient.GetContainerReference(folder);
bool b = container.CreateIfNotExists();
CloudBlockBlob blockBlob = container.GetBlockBlobReference(date + fileName);
blockBlob.Properties.ContentType = file.ContentType;
using (var fileStream = System.IO.File.OpenRead(fileName))
{
blockBlob.UploadFromStream(fileStream);
}
return blockBlob.Uri.AbsoluteUri;
}
catch (Exception ex)
{
return ex.Message;
}
The HttpPostedFileBase manual has this to say;
FileName Gets the fully qualified name of the file on the client.
That is, the file name is not one that can be opened on the server.
I think what you really want to do is use the InputStream property;
blockBlob.Properties.ContentType = file.ContentType;
blockBlob.UploadFromStream(file.InputStream); // Upload from InputStream
return blockBlob.Uri.AbsoluteUri;
Thank you so much: Joachim Isaksson (above) I spent the whole day yesterday fighting with this one line of code. I've voted your answer up but I thought I'd add a copy of your solution that lies within my own code now:
public async Task<ActionResult> UploadAsync()
{
try
{
HttpFileCollectionBase files = Request.Files;
int fileCount = files.Count;
if (fileCount > 0)
{
for (int i = 0; i < fileCount; i++)
{
CloudBlockBlob blob = blobContainer.GetBlockBlobReference(GetRandomBlobName(files[i].FileName));
blob.Properties.ContentType = files[i].ContentType;
blob.UploadFromStream(files[i].InputStream);
// the above 2 lines replace the following line from the downloaded example project:
//await blob.UploadFromFileAsync(Path.GetFullPath(files[i].FileName), FileMode.Open);
}
}
return RedirectToAction("Index");
}
}
I am looking for some suggestion or sample around retrieving images (actual file, not URL), from a picture library using REST API.
Thanks for any input.
Task 1: Getting a List of Image libs on a given site
public static XmlNode GetPicLibListingXML(string imagingServiceURL)
{
Imaging wsImaging = new Imaging();
wsImaging.UseDefaultCredentials = true;
wsImaging.Url = imagingServiceURL;
XmlNode xnPicLibs = wsImaging.ListPictureLibrary();
return xnPicLibs;
}
Sample return XML:
<Library name="{3C1D52F5-5387-490A-9A2D-A9C99A208C00}" title="Tech Images" guid="3c1d52f5-5387-490a-9a2d-a9c99a208c00" url="Tech Images" xmlns="http://schemas.microsoft.com/sharepoint/soap/ois/" />
Task 2: Listing Images in a given library
public static XmlNode GetImageFileListing(string imagingServiceURL, string imageFileLibraryName)
{
Imaging wsImaging = new Imaging();
ImageInfo curImageInfo = new ImageInfo();
wsImaging.UseDefaultCredentials = true;
wsImaging.Url = imagingServiceURL;
XmlNode xnListItems = wsImaging.GetListItems(imageFileLibraryName, "");
return xnListItems;
}
Task 3: Download Image(s)
private const string ATTR_FILENAME = "name";
private const string FILENAMESPACEURI = "http://schemas.microsoft.com/sharepoint/soap/ois/";
public static bool DownloadImageFiles(string imagingServiceURL, string imageFileLibraryName, string[] fileNames, string saveToFolder)
{
Imaging wsImaging = new Imaging();
wsImaging.UseDefaultCredentials = true;
wsImaging.Url = imagingServiceURL;
XmlElement parent = (XmlElement)wsImaging.Download(imageFileLibraryName, string.Empty, fileNames, 0, true);
XmlNodeList files = parent.GetElementsByTagName("File", FILENAMESPACEURI);
foreach (XmlNode file in files)
{
if (Directory.Exists(saveToFolder) == false)
{
Directory.CreateDirectory(saveToFolder);
}
byte[] fileBytes = Convert.FromBase64String(file.InnerText);
using (FileStream fs = File.OpenWrite(saveToFolder + file.Attributes[ATTR_FILENAME].Value))
{
BinaryWriter writer = new BinaryWriter(fs);
writer.Write(fileBytes);
writer.Close();
}
}
return true;
}
Note:
Imaging() class is a web reference to imagining.asmx
The Download call natively returns XML so yo uneed to run it through a conversion to byte
If you need to get a reference on the Imagine web service check this on out on MSDN:
http://msdn.microsoft.com/en-us/library/imaging.imaging.aspx
source:
http://gourangaland.wordpress.com/2008/05/30/using-the-moss-imaging-web-service-to-download-imagesimaging-asmx/