/**
* @param source source input stream
* @return InputStream the resulting input stream
*/
public InputStream getDestinationStream(InputStream source) throws Exception {
try {
boolean useTemporaryFile =
ConfigurationManager.getBooleanProperty("pdffilter.largepdfs", false);
// get input stream from bitstream
// pass to filter, get string back
PDFTextStripper pts = new PDFTextStripper();
PDDocument pdfDoc = null;
Writer writer = null;
File tempTextFile = null;
ByteArrayOutputStream byteStream = null;
if (useTemporaryFile) {
tempTextFile = File.createTempFile("dspacepdfextract" + source.hashCode(), ".txt");
tempTextFile.deleteOnExit();
writer = new OutputStreamWriter(new FileOutputStream(tempTextFile));
} else {
byteStream = new ByteArrayOutputStream();
writer = new OutputStreamWriter(byteStream);
}
try {
pdfDoc = PDDocument.load(source);
pts.writeText(pdfDoc, writer);
} finally {
try {
if (pdfDoc != null) pdfDoc.close();
} catch (Exception e) {
log.error("Error closing PDF file: " + e.getMessage(), e);
}
try {
writer.close();
} catch (Exception e) {
log.error("Error closing temporary extract file: " + e.getMessage(), e);
}
}
if (useTemporaryFile) {
return new FileInputStream(tempTextFile);
} else {
byte[] bytes = byteStream.toByteArray();
return new ByteArrayInputStream(bytes);
}
} catch (OutOfMemoryError oome) {
log.error("Error parsing PDF document " + oome.getMessage(), oome);
if (!ConfigurationManager.getBooleanProperty("pdffilter.skiponmemoryexception", false)) {
throw oome;
}
}
return null;
}
String pdf2Text(File fll) {
String fileName = fll.getName();
System.out.println("Parsing PDF file " + fileName + "...");
File fl = fll;
if (!fl.isFile()) {
System.out.println("The File : " + fileName + " does not exist!");
return null;
}
try {
parser = new PDFParser(new FileInputStream(fl));
} catch (Exception e) {
System.out.println("Could not open PDF Parser.");
return null;
}
try {
parser.parse();
csDoc = parser.getDocument();
pdfStrp = new PDFTextStripper();
pdDoc = new PDDocument(csDoc);
NewText = pdfStrp.getText(pdDoc);
} catch (Exception e) {
System.out.println("Error while parsing PDF file!");
e.printStackTrace();
try {
if (csDoc != null) csDoc.close();
if (pdDoc != null) pdDoc.close();
} catch (Exception e1) {
e.printStackTrace();
}
return null;
}
System.out.println("Done.");
return NewText;
}
package lius.index.pdf;
