在前面的兩篇文章（如何使用Aspose.BarCode for Java 識別word 文檔的條碼 和 如何使用Aspose.BarCode for Java從PDF文檔中識別條碼）中我們介紹了如何使用Aspose.BarCode 從PDF和word文檔中識別條碼，今天本文將為大家介紹Aspose.BarCode如何讀取多頁TIFF圖像的條碼。

　　Aspose.BarCode經常被用來讀取多頁TIFF圖像的條碼。本文這個例子便向我們展示如何識別多頁TIFF圖像的條碼。

[Java]

import com.aspose.barcode.*;

import com.sun.media.jai.codec.ImageCodec;

import com.sun.media.jai.codec.ImageDecoder;

import com.sun.media.jai.codec.TIFFDecodeParam;

import javax.imageio.ImageReader;

import javax.imageio.stream.ImageInputStream;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.util.Iterator;

/**

* Read barcodes from multi-pages tiff image sample

* Integreted Sun's JAI (Java Advanced Imaging) Library to working with tiff files

* Details information about JAI: //java.sun.com/javase/technologies/desktop/media/

*/

public class TiffWithJAI {

public static void main(String[] args) throws Exception {

String fileName = "C:\\multi_page.tiff";

Iterator readers = javax.imageio.ImageIO.getImageReadersBySuffix("tiff");

if (readers.hasNext()) {

File fi = new File(fileName);

ImageInputStream iis = javax.imageio.ImageIO.createImageInputStream(fi);

TIFFDecodeParam param = null;

ImageDecoder dec = ImageCodec.createImageDecoder("tiff", fi, param);

//Get the page count of the tiff image

int pageCount = dec.getNumPages();

ImageReader _imageReader = (ImageReader) (readers.next());

if (_imageReader != null) {

_imageReader.setInput(iis, true);

//Feed each page to the BarCodeReader

for (int i = 0; i < pageCount; i++) {

BufferedImage _bufferedImage = _imageReader.read(i);

com.BarCodeReader reader = new BarCodeReader(_bufferedImage, BarCodeReadType.Datamatrix);

//Read the barcodes in a single page

while (reader.read())

{

System.out.println(reader.getCodeText());

}

}

}

}

}

}

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