zxing barcode scanner example

BarcodeScanner.java

import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.multi.GenericMultipleBarcodeReader;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.EnumMap;
import java.util.Map;

public class BarcodeScanner
{
	public static void main(final String[] args)
	{
		if (args.length != 1)
		{
			System.err.println("Usage: " + BarcodeScanner.class.getCanonicalName() + " <image dir>");
			System.exit(1);
		}

		File inputDir = new File(args[0]);
		if (!inputDir.isDirectory())
		{
			System.err.println("Input " + inputDir + " is not a directory");
			System.exit(1);
		}

		for (File input : inputDir.listFiles())
		{
			if (!input.isFile())
				continue;

			String filename = input.getName();
			try (BufferedInputStream bfin = new BufferedInputStream(new FileInputStream(input)))
			{
				BufferedImage bfi = ImageIO.read(bfin);
				if (bfi == null)
				{
					System.err.println("Could not read image from " + filename);
					continue;
				}
				LuminanceSource ls = new BufferedImageLuminanceSource(bfi);
				BinaryBitmap bmp = new BinaryBitmap(new HybridBinarizer(ls));

				GenericMultipleBarcodeReader reader = new GenericMultipleBarcodeReader(new MultiFormatReader());
				Result[] results;

				Map<DecodeHintType, Object> decodeHints = new EnumMap<>(DecodeHintType.class);
				decodeHints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);

				results = reader.decodeMultiple(bmp, decodeHints);
				System.out.println("Found " + results.length + " barcodes in " + filename);
				int i = 0;
				for (Result result : results)
					System.out.println("Barcode " + ++i + ": " + result.getText());
			}
			catch (NotFoundException e)
			{
				System.err.println("No barcodes found in " + filename);
			}
			catch (IOException e)
			{
				e.printStackTrace();
			}
			finally
			{
				System.out.println("---------------------------------------------------------");
			}
		}
	}
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>nl.mumasoft</groupId>
    <artifactId>barcodescanner</artifactId>
    <version>1.0-SNAPSHOT</version>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
                <version>2.3.2</version>
            </plugin>
        </plugins>
    </build>

    <dependencies>  
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>3.3.3</version>
        </dependency>
    </dependencies>

</project>