Unable to open PDF file from servlet.

[kartik reddy]

When I am trying to open a PDF through a Servlet it is popping with an acrobat error with the message
"The file is damaged and could not be repaired"


I am using the following code to display the pdf file from the serlvet,

File pdfFile = new File(filePath);
OutputStream responseOutputStream = resp.getOutputStream();
resp.setContentType("application/pdf");
resp.setHeader("Content-disposition", "attachment;filename=\"" + file + "\"");
resp.setContentLength((int)filePath.length());
FileInputStream fileInputStream = new FileInputStream(pdfFile);
int size = fileInputStream.available();
byte[] content = new byte[size];
fileInputStream.read(content);
responseOutputStream.write(content);
responseOutputStream.flush();
fileInputStream.close();
responseOutputStream.close();


The same code works fine when the pdf contains only text content.
But it doesn't work when PDF contains text content with images.

Could anyone help me to solve this issue..

[Rob Spoor]

kartik reddy wrote:fileInputStream.read(content);
responseOutputStream.write(content);

That's not the proper way to copy a file. InputStream.read(byte[]) can read fewer bytes than you intend. If that is the case the remainder of the byte[] will contain 0 bytes. This may very well be the cause of the corruption.
The solution is of course to use a loop:

int bytesRead;
while ((bytesRead = fileInputStream.read(content)) != -1) // read, then assign, then compare
{
    responseOutputStream.write(content, 0, bytesRead);
}

[kartik reddy]

I have used while loop, but still I could able to get this issue "The file is damaged and could not be repaired" when I am trying to open a PDF through a Servlet.

If you find any alternative solution to fix this issue please let me know.

Thanks in advance..

[Rob Spoor]

What happens if you don't close responseOutputStream, but only flush it after writing the file?