Working with PDF files

Question

Hello, we would like to write some functionality that generates PDF files from our Java application and additionally, some functionality that reads them into the app also. What is the best API to use for this? Would it be iText?

Answer 1

Aha,show my code and say nothing[
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1�Bjacob  for  taking out  pdf ,word and  excel.
jacob is a bridage�Cwhich connects java and com or win32 functions.It nees a dll,but the authoe of the jacob provide it�B
jacob�Fhttp://www.matrix.org.cn/down_view.asp?id=13
put dll under path,jar file under classpath  ,   import java.io.File;
import com.jacob.com.*;
import com.jacob.activeX.*;
public class FileExtracter{
public static void main(String[] args) {
ActiveXComponent app = new ActiveXComponent("Word.Application");
String inFile = "c:\\test.doc";
String tpFile = "c:\\temp.htm";
String otFile = "c:\\temp.xml";
boolean flag = false;
try {
app.setProperty("Visible", new Variant(false));
Object docs = app.getProperty("Documents").toDispatch();
Object doc = Dispatch.invoke(docs,"Open", Dispatch.Method, new Object[]{inFile,new Variant(false), new Variant(true)}, new int[1]).toDispatch();
Dispatch.invoke(doc,"SaveAs", Dispatch.Method, new Object[]{tpFile,new Variant(8)}, new int[1]);
Variant f = new Variant(false);
Dispatch.call(doc, "Close", f);
flag = true;
} catch (Exception e) {
e.printStackTrace();
} finally {
app.invoke("Quit", new Variant[] {});
}2)
apache's poi  takes out  word�Cexcel�B
poi package�Fhttp://www.matrix.org.cn/down_view.asp?id=14
put it under classpath.
import java.io.*;
import org.textmining.text.extraction.WordExtractor;
* <p>Title: pdf extraction</p>
* <p>Description: email:[email protected]</p>
* <p>Copyright: Matrix Copyright (c) 2003</p>
* <p>Company: Matrix.org.cn</p>
* @author chris
* @version 1.0,who use this example pls remain the declare
public class PdfExtractor {
public PdfExtractor() {
public static void main(String args[]) throws Exception
FileInputStream in = new FileInputStream ("c:\\a.doc");
WordExtractor extractor = new WordExtractor();
String str = extractor.extractText(in);
System.out.println("the result length is"+str.length());
System.out.println("the result is"+str);
}3)
3�Bpdfbox  for   pdf 
http://www.matrix.org.cn/down_view.asp?id=12
import org.pdfbox.pdmodel.PDDocument;
import org.pdfbox.pdfparser.PDFParser;
import java.io.*;
import org.pdfbox.util.PDFTextStripper;
import java.util.Date;
* <p>Title: pdf extraction</p>
* <p>Description: email:[email protected]</p>
* <p>Copyright: Matrix Copyright (c) 2003</p>
* <p>Company: Matrix.org.cn</p>
* @author chris
* @version 1.0,who use this example pls remain the declare
public class PdfExtracter{
public PdfExtracter(){
public String GetTextFromPdf(String filename) throws Exception
String temp=null;
PDDocument pdfdocument=null;
FileInputStream is=new FileInputStream(filename);
PDFParser parser = new PDFParser( is );
parser.parse();
pdfdocument = parser.getPDDocument();
ByteArrayOutputStream out = new ByteArrayOutputStream();
OutputStreamWriter writer = new OutputStreamWriter( out );
PDFTextStripper stripper = new PDFTextStripper();
stripper.writeText(pdfdocument.getDocument(), writer );
writer.close();
byte[] contents = out.toByteArray();
String ts=new String(contents);
System.out.println("the string length is"+contents.length+"\n");
return ts;
public static void main(String args[])
PdfExtracter pf=new PdfExtracter();
PDDocument pdfDocument = null;
try{
String ts=pf.GetTextFromPdf("c:\\a.pdf");
System.out.println(ts);
catch(Exception e)
e.printStackTrace();