problem in opening the pdf attachement sent by using java mail API

[Former Member]

Hi,

I created a pdf document on fly using itext(open source) and was able to send that pdf document using java mail API.But i am getting a problem while opening that pdf in my mail

Exception i am getting while opening the pdf is

<b>Adobe reader could not open 'Answers.pdf' because it is either not a supported file type or because the file has been damaged(for example ,it was sent as an attachment and was not correctly decoded)</b>

Please understand the exact problem and send me the pointers.

Points will be awarded

Please find the code for the same and let me know where i am doing wrong

package com.psft;

import java.awt.Color;

import java.io.IOException;

import java.util.Properties;

import java.util.StringTokenizer;

import com.psft.ByteArrayDataSource;

import javax.activation.DataHandler;

import javax.mail.Authenticator;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeBodyPart;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.servlet.http.HttpSession;

import com.lowagie.text.Document;

import com.lowagie.text.PageSize;

import com.lowagie.text.Paragraph;

import com.lowagie.text.pdf.PdfPCell;

import com.lowagie.text.pdf.PdfPTable;

import com.lowagie.text.pdf.PdfWriter;

public class Logout extends HttpServlet

{

protected void doGet(

HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException

{

generatePDF(request, response);

}

protected void doPost(

HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException

{

//TODO : Implement

}

public void generatePDF(

HttpServletRequest request,

HttpServletResponse response)

{

try

{

//create a document with certain page size

Document document = new Document(PageSize.A4);

//HttpServletResponse res = request.getServletResponse(true);

//set the mimetype

response.setContentType("application/pdf");

PdfWriter.getInstance(document, response.getOutputStream());

//open the document for adding stuff

document.open();

//create a table with 3 columns

PdfPTable table = new PdfPTable(1);

PdfPCell cell;

//add the first row as header

cell = new PdfPCell(new Paragraph("Answers"));

cell.setBackgroundColor(new Color(34, 90, 141));

table.addCell(cell);

HttpSession session = request.getSession();

StringBuffer blankAnswers =

(StringBuffer) session.getAttribute("blankanswers");

String answersCorrect = blankAnswers.toString();

StringTokenizer st =

new StringTokenizer(

answersCorrect.substring(

0,

answersCorrect.lastIndexOf(",")),

",");

int flag = 0;

Color bg;

while (st.hasMoreTokens())

{

if (flag == 0)

{

flag = 1;

bg = new Color(204, 204, 255);

}

else

{

flag = 0;

bg = new Color(255, 255, 255);

}

cell = new PdfPCell(new Paragraph(st.nextToken()));

cell.setBackgroundColor(bg);

table.addCell(cell);

}

//add the data rows.

document.add(table);

document.close();

sendAnswersToAdministrator(response,document);

}

catch (Exception e)

{

}

}

public void sendAnswersToAdministrator(HttpServletResponse response , Document pdf)

{

try

{

// Get system properties

Properties props = System.getProperties();

// Setup mail server

props.put("mail.smtp.host", "edison.Prosofthq.com");

props.put("mail.smtp.port", "25");

props.put("mail.smtp.auth", "true");

// Get session

Authenticator loAuthenticator = new MailAuthenticator();

Session session = Session.getInstance(props, loAuthenticator);

String mailfrom = "bala.duvvuri@prosoftcyberworld.com";

String mailto = "bala.duvvuri@prosoftcyberworld.com";

String ccmailid = "bala.duvvuri@prosoftcyberworld.com";

String subject = "hello";

System.setProperty("mail.mime.encodeeol.strict", "true");

MimeMessage mimemessage = new MimeMessage(session);

// set FROM

mimemessage.setFrom(new InternetAddress(mailfrom));

// set DATE

mimemessage.setSentDate(new java.util.Date());

// set SUBJECT

mimemessage.setSubject(subject);

// set TO address

try

{

mimemessage.setRecipients(

javax.mail.Message.RecipientType.TO,

mailto);

}

catch (Exception exception1)

{

System.out.println(

"\tError in setting recipients ......\t"

+ exception1.getMessage());

}

// set message BODY

MimeBodyPart mimebodypart = new MimeBodyPart();

mimebodypart.setText("hello");

// attach message BODY

MimeMultipart mimemultipart = new MimeMultipart();

mimemultipart.addBodyPart(mimebodypart);

// attach FILE

mimebodypart = new MimeBodyPart();

try

{

<b> mimebodypart.setDataHandler(new DataHandler(new ByteArrayDataSource(pdf.toString(), "application/pdf")));</b>

}

catch (Exception exception3)

{

System.out.println(

"\tError in sending file not been able to attach ......\t"

+ exception3.getMessage());

}

mimebodypart.setFileName("Answers.pdf"); // set FILENAME

mimemultipart.addBodyPart(mimebodypart);

mimemessage.setContent(mimemultipart);

String strResult = "";

//set CC MAIL and SEND the mail

if (!mailto.equals(""))

{

// set CC MAIL

try

{

// send MAIL

Transport.send(mimemessage);

System.out.println("\tSent Successfully..........");

strResult = "\tSent Successfully..........";

}

catch (Exception exception4)

{

System.out.println(

"\tError in sending Address Try........."

+ exception4.getMessage());

}

}

else

{

System.out.println("\tMail operation Failed..........\t");

strResult = "\tMail operation Failed..........\t";

}

}

catch (Exception ex)

{

System.out.println("ddd" + ex.getMessage());

}

finally

{

try{

response.sendRedirect("logout.jsp");

}catch(Exception e){

}

}

}

}

[luciano_leitedasilva]

Hi Duwuri,

Did you try to create a ByteArrayDataSource using the PDF binary?

I guess it is the problem.

Regards,

Luciano

[Former Member]

I am trying to convert the object of type Document to string and pass as a parameter to ByteArrayDataSource.

if it is not right then what is right

[luciano_leitedasilva]

Could you try this:

...

try{

OutputStream output = new FileOutputStream("file.pdf");

PdfWriter.getInstance(pdf, output);

pdf.close();

mimebodypart.setDataHandler(new DataHandler(output, "application/pdf")));

}

...

I guess it is going to work!

Regards,

Luciano

[Former Member]

OutputStream output = new FileOutputStream("file.pdf");

where is this file.pdf coming from?

I am generating pdf document on fly using itext open source

[Former Member]

I solved it by myself .

Find the code snippet below

/*

• Created on Nov 2, 2007

*

• To change the template for this generated file go to

• Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments

*/

package com.psft;

import java.awt.Color;

import java.io.File;

import java.io.FileOutputStream;

import java.io.Serializable;

import java.util.Properties;

import java.util.StringTokenizer;

import javax.activation.DataHandler;

import javax.activation.FileDataSource;

import javax.mail.Authenticator;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeBodyPart;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import javax.servlet.http.HttpSession;

import com.lowagie.text.Document;

import com.lowagie.text.PageSize;

import com.lowagie.text.Paragraph;

import com.lowagie.text.pdf.PdfPCell;

import com.lowagie.text.pdf.PdfPTable;

import com.lowagie.text.pdf.PdfWriter;

/**

• @author BALU

*

• To change the template for this generated type comment go to

• Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments

*/

public class FileWrite implements Serializable

{

public static void main(String[] a)

{

//import needed

String filepath =

"C:
MyFolder
Answers.pdf";

FileWrite fw = new FileWrite();

fw.callMethods(new StringBuffer("1.program,2.langauge"), filepath);

}

public String retString()

{

return "u got it";

}

public void callMethods(StringBuffer blankAnswers, String filepath)

{

WriteFile(blankAnswers, filepath);

sendMail(filepath);

deleteFile(filepath);

}

public void WriteFile(StringBuffer blankAnswers, String filepath)

{

String s = blankAnswers.toString(); /* String to be written */

char s1 = '\n';

try

{

Document doc = new Document(PageSize.A4);

PdfWriter.getInstance(

doc,

new FileOutputStream(filepath));

doc.open();

//create a table with 3 columns

PdfPTable table = new PdfPTable(1);

PdfPCell cell;

//add the first row as header

cell = new PdfPCell(new Paragraph("Answers"));

cell.setBackgroundColor(new Color(34, 90, 141));

table.addCell(cell);

String answersCorrect = blankAnswers.toString();

StringTokenizer st =

new StringTokenizer(

answersCorrect.substring(

0,

answersCorrect.lastIndexOf(",")),

",");

int flag = 0;

Color bg;

while (st.hasMoreTokens())

{

if (flag == 0)

{

flag = 1;

bg = new Color(204, 204, 255);

}

else

{

flag = 0;

bg = new Color(255, 255, 255);

}

cell = new PdfPCell(new Paragraph(st.nextToken()));

cell.setBackgroundColor(bg);

table.addCell(cell);

}

//add the data rows.

doc.add(table);

doc.close();

}

catch (Exception e)

{

System.out.println("Exception :" + e);

}

}

public void sendMail(String filepath)

{

try

{

// Get system properties

Properties props = System.getProperties();

// Setup mail server

props.put("mail.smtp.host", "edison.Prosofthq.com");

props.put("mail.smtp.port", "25");

props.put("mail.smtp.auth", "true");

// Get session

Authenticator loAuthenticator = new MailAuthenticator();

Session session = Session.getInstance(props, loAuthenticator);

String mailfrom = "bala.duvvuri@prosoftcyberworld.com";

String mailto = "bala.duvvuri@prosoftcyberworld.com";

String ccmailid = "bala.duvvuri@prosoftcyberworld.com";

String subject = "hello";

System.setProperty("mail.mime.encodeeol.strict", "true");

MimeMessage mimemessage = new MimeMessage(session);

// set FROM

mimemessage.setFrom(new InternetAddress(mailfrom));

// set DATE

mimemessage.setSentDate(new java.util.Date());

// set SUBJECT

mimemessage.setSubject(subject);

// set TO address

try

{

mimemessage.setRecipients(

javax.mail.Message.RecipientType.TO,

mailto);

}

catch (Exception exception1)

{

System.out.println(

"\tError in setting recipients ......\t"

+ exception1.getMessage());

}

// set message BODY

MimeBodyPart mimebodypart = new MimeBodyPart();

mimebodypart.setText("hello");

// attach message BODY

MimeMultipart mimemultipart = new MimeMultipart();

mimemultipart.addBodyPart(mimebodypart);

// attach FILE

mimebodypart = new MimeBodyPart();

try

{

FileDataSource filedatasource = new FileDataSource(filepath);

mimebodypart.setDataHandler(new DataHandler(filedatasource));

}

catch (Exception exception3)

{

System.out.println(

"\tError in sending file not been able to attach ......\t"

+ exception3.getMessage());

}

mimebodypart.setFileName("Answers.pdf"); // set FILENAME

mimemultipart.addBodyPart(mimebodypart);

mimemessage.setContent(mimemultipart);

String strResult = "";

//set CC MAIL and SEND the mail

if (!mailto.equals(""))

{

// set CC MAIL

try

{

// send MAIL

Transport.send(mimemessage);

System.out.println("\tSent Successfully..........");

strResult = "\tSent Successfully..........";

}

catch (Exception exception4)

{

System.out.println(

"\tError in sending Address Try........."

+ exception4.getMessage());

}

}

else

{

System.out.println("\tMail operation Failed..........\t");

strResult = "\tMail operation Failed..........\t";

}

}

catch (Exception ex)

{

System.out.println("ddd" + ex.getMessage());

}

}

public void deleteFile(String filepath)

{

File f = new File(filepath);

// Make sure the file or directory exists and isn't write protected

if (!f.exists())

throw new IllegalArgumentException(

"Delete: no such file or directory: " + filepath);

if (!f.canWrite())

throw new IllegalArgumentException(

"Delete: write protected: " + filepath);

// If it is a directory, make sure it is empty

if (f.isDirectory())

{

String[] files = f.list();

if (files.length > 0)

throw new IllegalArgumentException(

"Delete: directory not empty: " + filepath);

}

// Attempt to delete it

boolean success = f.delete();

if (!success)

throw new IllegalArgumentException("Delete: deletion failed");

}

}

Thanks for you help.points awarded