I have a PDF
template containing a background image and some fields that I fill with
text.
I also need to
insert a gif image of the persons signature on the
page.
I read an archived
reply from Paulo and tried to use
PdfContentByte.
If I comment out the
image statement the text gets filled in correctly on the output PDF file and the
signature location is printed to stdout.
When I attempt to
add the image I get a null pointer error.
Any help would be
appreciated
Thanks
Jim Sloey
//
example
import java.io.*;
import java.util.*;
import
com.lowagie.text.Image;
import com.lowagie.text.pdf.*;
import
com.lowagie.text.DocumentException;
public class stampit {
static
void fillTemplate (String path, String template, String sig, String
outfile){
//get a handle to the file
location
String templatePath = path;
if(templatePath == null)
{templatePath =
"/";}
else
if(!templatePath.endsWith("/"))
{templatePath +=
"/";}
try
{
// Reads in the pdf
Template
PdfReader reader = new PdfReader(templatePath +
template);
PdfStamper stamp = new PdfStamper(reader, new
FileOutputStream(path+outfile));
AcroFields form =
stamp.getAcroFields();
//set the field values in the pdf
form
form.setField("name","James T. Sloey");
float
image_loc[] =
form.getFieldPositions("signature");
System.out.println(image_loc[0]);
System.out.println(image_loc[1]);
System.out.println(image_loc[2]);
System.out.println(image_loc[3]);
System.out.println(image_loc[4]);
// get the
image
Image image =
Image.getInstance(path+sig);
stamp.getWriter().getDirectContent().addImage(image,100,
0, 0, 100, image_loc[2], image_loc[4]);
//
done
stamp.setFormFlattening(true);
stamp.close();}
catch(Exception e)
{System.out.println("Error: " + e);}
}
public static void main(String[] args)
{
String template = "template.pdf";
String path =
"/export/home/jsloey/src/";
String outfile =
"cn1234567.pdf";
String sigfile =
"sig.gif";
System.out.println("Creating "+path+outfile+"
from "+path+template);
fillTemplate(path,template, sigfile,
outfile);
System.out.println("done");
}
}
