Read Barcodes from Word Documents

This article explains how to use Aspose.BarCode for Java to recognize barcodes from Microsoft Word documents.

Generate Barcode and Insert into Word Document

1. First, use Aspose.BarCode for Java and generate a barcode image
2. Save the generated image to file
3. Use Aspose.Words for Java to create a Microsoft Word document and insert this barcode in that document

Extract Images from Word Document and Read Barcodes

Recognition:

1. Extract images from the Microsoft Word document using Aspose.Words for Java.
2. Pass the images to Aspose.BarCode for Java for recognition.

The following code sample is a complete Java program to generate and recognize barcodes from Microsoft Word documents.

import java.text.MessageFormat;

import com.aspose.barcode.EncodeTypes;
import com.aspose.barcode.barcoderecognition.BarCodeReader;
import com.aspose.barcode.barcoderecognition.BarCodeResult;
import com.aspose.barcode.barcoderecognition.DecodeType;
import com.aspose.barcode.examples.Utils;
import com.aspose.barcode.generation.BarcodeGenerator;
import com.aspose.words.ImageType;
import com.aspose.words.NodeCollection;
import com.aspose.words.NodeType;

public class RecognitionFromWord {
	public static void main(String[] args) {
		try {
			String dataDir = Utils.getDataDir(RecognitionFromWord.class) + "TechnicalArticles/";

			// Generate barcode image
			BarcodeGenerator generator = new BarcodeGenerator(EncodeTypes.CODE_39_STANDARD);

			generator.setCodeText("test-123");
			String strBarCodeImageSave = dataDir + "img.jpg";
			generator.save(strBarCodeImageSave);

			// Add the image to a Word doc
			com.aspose.words.Document doc = new com.aspose.words.Document();
			com.aspose.words.DocumentBuilder docBuilder = new com.aspose.words.DocumentBuilder(doc);
			docBuilder.insertImage(strBarCodeImageSave);
			String strWordFile = "docout.doc";
			doc.save(dataDir + strWordFile);

			// Recognition part
			// Extract image from the Word document
			NodeCollection<com.aspose.words.Shape> shapes = doc.getChildNodes(NodeType.SHAPE, true);
			int imageIndex = 0;

			for (com.aspose.words.Shape shape : shapes) {
				if (shape.hasImage()) {
					// If this shape is an image, extract image to file
					String extension = ImageTypeToExtension(shape.getImageData().getImageType());
					String imageFileName = MessageFormat.format("Image.ExportImages.{0} Out.{1}", imageIndex,
							extension);
					String strBarCodeImageExtracted = "" + imageFileName;
					shape.getImageData().save(strBarCodeImageExtracted);

					// Recognize barcode from this image
					// BufferedImage img = (BufferedImage)
					// Toolkit.getDefaultToolkit().getImage(strBarCodeImageExtracted);

					BarCodeReader reader = new BarCodeReader(strBarCodeImageSave, DecodeType.CODE_39_STANDARD);
					for (BarCodeResult result : reader.readBarCodes()) {
						System.out.println("CodeText: " + result.getCodeText());
						System.out.println("Symbology type: " + result.getCodeType());
					}
					imageIndex++;
				}
			}
		} catch (Exception ex) {
			System.out.println(ex.getMessage());
		}
	}

	private static String ImageTypeToExtension(int imageType) throws Exception {
		switch (imageType) {
		case ImageType.BMP:
			return "bmp";
		case ImageType.EMF:
			return "emf";
		case ImageType.JPEG:
			return "jpeg";
		case ImageType.PICT:
			return "pict";
		case ImageType.PNG:
			return "png";
		case ImageType.WMF:
			return "wmf";
		default:
			throw new Exception("Unknown image type.");
		}
	}

}