com.lowagie.text.pdf.parser

Class PdfTextExtractor

java.lang.Object

com.lowagie.text.pdf.parser.PdfTextExtractor

public class PdfTextExtractor
extends java.lang.Object

Extracts text from a PDF file.

Since:

2.1.4

Field Summary

Fields

Modifier and Type	Field and Description
private PdfReader	reader The PdfReader that holds the PDF file.
private TextProvidingRenderListener	renderListener The TextProvidingRenderListener that will receive render notifications and provide resultant text

Constructor Summary

Constructors

Constructor and Description
PdfTextExtractor(PdfReader reader) Creates a new Text Extractor object, using a SimpleTextExtractingPdfContentRenderListener as the render listener
PdfTextExtractor(PdfReader reader, TextProvidingRenderListener renderListener) Creates a new Text Extractor object.

Method Summary

Modifier and Type	Method and Description
private byte[]	getContentBytesForPage(int pageNum) Gets the content bytes of a page.
private byte[]	getContentBytesFromContentObject(PdfObject contentObject) Gets the content bytes from a content object, which may be a reference a stream or an array.
java.lang.String	getTextFromPage(int page) Gets the text from a page.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

reader

private final PdfReader reader

The PdfReader that holds the PDF file.

renderListener

private final TextProvidingRenderListener renderListener

The TextProvidingRenderListener that will receive render notifications and provide resultant text

Constructor Detail

PdfTextExtractor

public PdfTextExtractor(PdfReader reader)

Creates a new Text Extractor object, using a SimpleTextExtractingPdfContentRenderListener as the render listener

Parameters:

reader - the reader with the PDF

PdfTextExtractor

public PdfTextExtractor(PdfReader reader,
                        TextProvidingRenderListener renderListener)

Creates a new Text Extractor object.

Parameters:

reader - the reader with the PDF

renderListener - the render listener that will be used to analyze renderText operations and provide resultant text

Method Detail

getContentBytesForPage

private byte[] getContentBytesForPage(int pageNum)
                               throws java.io.IOException

Gets the content bytes of a page.

Parameters:

pageNum - the page number of page you want get the content stream from

Returns:

a byte array with the effective content stream of a page

Throws:

java.io.IOException

getContentBytesFromContentObject

private byte[] getContentBytesFromContentObject(PdfObject contentObject)
                                         throws java.io.IOException

Gets the content bytes from a content object, which may be a reference a stream or an array.

Parameters:

contentObject - the object to read bytes from

Returns:

the content bytes

Throws:

java.io.IOException

getTextFromPage

public java.lang.String getTextFromPage(int page)
                                 throws java.io.IOException

Gets the text from a page.

Parameters:

page - the page number of the page

Returns:

a String with the content as plain text (without PDF syntax)

Throws:

java.io.IOException