I am downloading PDF files from URLs using scala using below code and it is working fine
var out: OutputStream = null;
var in: InputStream = null;
val url = new URL( """http://www.pdf995.com/samples/pdf.pdf""")
val connection = url.openConnection().asInstanceOf[HttpURLConnection]
connection.setRequestMethod("GET")
in = connection.getInputStream
val localfile = "sample2.pdf"
out = new BufferedOutputStream(new FileOutputStream(localfile))
val byteArray = Stream.continually(in.read).takeWhile(-1 !=).map(_.toByte).toArray
out.write(byteArray)
but when I give URLs which does not end with "PDF" for example URL given below
https://www.google.com.pk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=51&ved=0ahUKEwjq19ah8MbKAhXEj44KHeWAB6g4MhAWCBgwAA&url=http%3A%2F%2Fwww.us.fulbrightonline.org%2Fuploads%2Ffiles%2Fapplication_samples%2FForm9B_ETA_Reference_Form-Sample.pdf&usg=AFQjCNGZnon3ygHDJnW12Te8JrBR-o6jyw&sig2=OgSgD4HnUXZ9l_VS0AwGFg&bvm=bv.112454388,d.c2E&cad=rja
it does not generate PDF file properly. While opening that PDF "Not a PDF or corrupted error" comes.
If you read your URL and chop off the hash at the end (all that comes after .pdf, you'll see the link that Google is pointing to embedded in there:
https://www.google.com.pk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=51&ved=0ahUKEwjq19ah8MbKAhXEj44KHeWAB6g4MhAWCBgwAA&url=http%3A%2F%2Fwww.us.fulbrightonline.org%2Fuploads%2Ffiles%2Fapplication_samples%2FForm9B_ETA_Reference_Form-Sample.pdf
Here's the direct link (use this for your project):
http://www.us.fulbrightonline.org/uploads/files/application_samples/Form9B_ETA_Reference_Form-Sample.pdf
Related
I'm using sendgrid to send mails with attachments. But seems like excel file is corrupted in the mail. This is the code I'm using
byte[] byteData = System.Text.Encoding.ASCII.GetBytes(File.ReadAllText(#"fullpath\test.xlsx"));
msg.Attachments = new List<SendGrid.Helpers.Mail.Attachment>
{
new SendGrid.Helpers.Mail.Attachment
{
Content = Convert.ToBase64String(byteData),
Filename = "test.xlsx",
Type = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
Disposition = "attachment"
}
};
On opening of excel file, I'm getting a popup "We found a problem with content...If you trust click "Yes". On Yes, Excel cannot open this file. Can anyone please help me on this
#Sendgrid
Twilio SendGrid developer evangelist here.
I think the issue may be that you are getting the byte data by reading the file as text and then converting that text to bytes through the lens of ASCII encoding. It may work better to just read the file as bytes initially.
Try:
byte[] byteData = File.ReadAllBytes(#"fullpath\test.xlsx");
msg.Attachments = new List<SendGrid.Helpers.Mail.Attachment>
{
new SendGrid.Helpers.Mail.Attachment
{
Content = Convert.ToBase64String(byteData),
Filename = "test.xlsx",
Type = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
Disposition = "attachment"
}
};
Try below
msg.AddAttachment("test.xlsx"); // Physical file path
Make assure file path is relevant
or You try with Bytes as well,
var bytes = File.ReadAllBytes(filePath);
var file = Convert.ToBase64String(bytes);
msg.AddAttachment("Name.xls", file);
I need an example of usign FormEngine. To be more especific....
I'm executing code below - but there’s no forms found in my BAR file :(
The BAR file was exported from Flowable Modeler and it contains one form and one process and app. Maybe there's other way to deploy and obtain forms...?
RepositoryService repositoryService = processEngine.getRepositoryService();
FormRepositoryService formRepositoryService = formEngine.getFormRepositoryService();
File file = new File(path);
ZipInputStream inputStream = new ZipInputStream(new FileInputStream(path));
String idDeployParent = repositoryService.createDeployment()
.name(file.getName())
.addZipInputStream(inputStream)
.deploy()
.getId();
DeploymentEntity deploymentEntity = (DeploymentEntity) repositoryService.createDeploymentQuery().list().get(0);
formRepositoryService.createDeployment()
.name(file.getName())
.parentDeploymentId(idDeployParent)
.deploy();
System.out.println(" FORMS FOUND: " + formRepositoryService.createFormDefinitionQuery().list().size());
I want to add to my app a simple button that on click will call an Action that will create a csv file from two lists I have and download it to the user computer.
This is my Action:
def createAndDownloadFile = Action {
val file = new File("newFile.csv")
val writer = CSVWriter.open(file)
writer.writeAll(List(listOfHeaders, listOfValues))
writer.close()
Ok.sendFile(file, inline = false, _ => file.getName)
}
but this is now working for me, the file is not getting downloaded from the browser...
im expecting to see the file get downloaded by the browser, i thought Ok.sendFile should do the trick..
thanks!
You can use Enumerators and streams for that. It should work like this:
val enum = Enumerator.fromFile(...)
val source = akka.stream.scaladsl.Source.fromPublisher(play.api.libs.streams.Streams.enumeratorToPublisher(enum))
Result(
header = ResponseHeader(OK, Map(CONTENT_DISPOSITION → "attachment; filename=whatever.csv.gz")),
body = HttpEntity.Streamed(source.via(Compression.gzip), None, None)
)
This will actually pipe the download through gzip. Just remove the .via(Compression.gzip) part if that is not needed.
scala code :
val file = new File(path + name)
val raf = new RandomAccessFile(file, "r")
val channel = raf.getChannel()
val buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size())
val pdffile = new PDFFile(buf) // line 5
here, file is referring to pdf file. path is the address of pdf file and name is name of file.
In normal case, it executes fine, but in some pdf files, it throws error in line 5 as :
com.sun.pdfview.PDFParseException: Expected 'xref' at start of table
at com.sun.pdfview.PDFFile.readTrailer(PDFFile.java:974) ~[pdf-renderer-1.0.5.jar:na]
at com.sun.pdfview.PDFFile.parseFile(PDFFile.java:1175) ~[pdf-renderer-1.0.5.jar:na]
at com.sun.pdfview.PDFFile.<init>(PDFFile.java:126) ~[pdf-renderer-1.0.5.jar:na]
at com.sun.pdfview.PDFFile.<init>(PDFFile.java:102) ~[pdf-renderer-1.0.5.jar:na]
I think this pdf file has some problem with its format or content. When i made another pdf file using save as with this pdf file and used that new created pdf file, it worked fine.
So how can i resolve this problem so that whetehr i use proper file or bad file, my code should work fine.
EDIT
I found the following in the com/sun/pdfview/PDFFile.java description
#throws PDFParseException if the document appears to be malformed, or
its features are unsupported
.
I've got an Excel file that's built using OpenXML 2 and I want to send it as an email attachment. e.g.
System.IO.MemoryStream stream = new System.IO.MemoryStream();
SpreadsheetDocument package = SpreadsheetDocument.Create(stream, SpreadsheetDocumentType.Workbook))
AddParts(package); //created using document reflector
Saving the spreadsheet to a temp file using
stream.WriteTo(new System.IO.FileStream(#"c:\test.xlsx", System.IO.FileMode.Create));
works fine. But trying to send the stream directly as an email attachment fails - just get an empty file attached to the email when I do
System.Net.Mail.Attachment file = new System.Net.Mail.Attachment(stream, "MobileBill.xlsx", "application/vnd.ms-excel");
Anbody know how to do this?
Ok, I got this working, though through some effort. To create the stream:
MemoryStream stream = new MemoryStream();
using (SpreadsheetDocument package = SpreadsheetDocument.Create(stream, SpreadsheetDocumentType.Workbook))
{
Excel.CreateSpreadsheet(package, Excel_Methods.CreateSpotQuoteOut(), true);
}
stream.Seek(0, SeekOrigin.Begin);
System.Net.Mail.Attachment attach = new System.Net.Mail.Attachment(stream, "spreadsheet.xlsx");
attach.ContentDisposition.CreationDate = DateTime.Now;
attach.ContentDisposition.ModificationDate = DateTime.Now;
attach.ContentDisposition.Inline = false;
attach.ContentDisposition.Size = stream.Length;
attach.ContentType.MediaType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Also, I found that mine were not being sent right after I created them, and the reason for that is "standalone=yes" was not being added to the xml declaration of all the pages, so in my AddParts function, after adding the parts, I passed them into this function:
private static void AddXMLStandalone(OpenXmlPart part)
{
System.IO.StreamWriter writer = new System.IO.StreamWriter(part.GetStream());
XmlDocument doc = new XmlDocument();
doc.Load(part.GetStream());
doc.InnerXml = doc.InnerXml.Substring(doc.InnerXml.IndexOf("?>") + 2);
doc.InnerXml = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>" + doc.InnerXml;
part.GetStream().SetLength(doc.InnerXml.Length);
doc.Save(writer);
writer.Flush();
writer.Close();
}
Good luck!
do this:
System.Net.Mail.Attachment file = new System.Net.Mail.Attachment(new MemoryStream(stream.ToArray()), "MobileBill.xlsx", "application/vnd.ms-excel");
Apparently the memory stream doesn't get flushed or something
For your "content unreadable" problem, make sure to Save() your Workbooks and Worksheets and enclose your SpreadsheetDocument in a using statement to ensure all packages and zipped streams are flushed, closed and so on.
System.IO.MemoryStream stream = new System.IO.MemoryStream();
using (SpreadsheetDocument package = SpreadsheetDocument.Create(stream, SpreadsheetDocumentType.Workbook)))
{
AddParts(package);
//Save if AddParts hasn't done it
}
System.Net.Mail.Attachment file = ...
Thinking out load: could it be, that the Attachment class expects to read from the current possition in the provided stream? If this is the case, you would probably have to "seek" back to the beginning of the stream, before feeding it to the Attachment constructor:
AddParts(package); //created using document reflector
stream.Seek(0, SeekOrigin.Begin);
System.Net.Mail.Attachment file = new System.Net.Mail.Attachment(stream, "MobileBill.xlsx", "application/vnd.ms-excel");