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Read QR Barcodes with Java

Read QR Code, GS1 QR Code in Java using server-side Aspose.BarCode for Java API

How to Read QR Code Using Java

To recognize QR Code, use Aspose.BarCode for Java API, an advance, robust, and easy-to-use barcode library for Java-based platforms. Download the latest version directly from Maven and install it within your Maven-based projects by including the following configurations in pom.xml:

Repository<repository>
    <id>AsposeJavaAPI</id>
    <name>Aspose Java API</name>
    <url>https://repository.aspose.com/repo/</url>
</repository>

Dependency<dependency>
    <groupId>com.aspose</groupId>
    <artifactId>aspose-barcode</artifactId>
    <version>version of aspose-barcode API</version>
    <classifier>jdk17</classifier>
</dependency>

Steps for Scanning QR Code in Java

Aspose.BarCode allows developers to read QR Code barcodes from stream or image with few lines of code

Create a new object of BarCodeReader class
Set the source file path containing QR Code
Pass the required barcode types to DecodeType as the second parameter
Loop through the decoding results
Get barcode text using the getCodeText method

System Requirements

Aspose APIs are supported on all major platforms and operating systems. Before executing the code sample below, please make sure that your system comply with the following requirements.

Microsoft Windows, Linux, or any OS compatible with Java Runtime Environment for JSP/JSF and desktop applications
Java development environment, such as JRE 1.6 or above
Java Development version JSE2 7.0 or above

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Code to be executed - Java

    
// initialize reader with image & expected type
BarCodeReader reader = new BarCodeReader(var reader = new Aspose.BarCode.BarCodeReader("<file name>", DecodeType.QR);

// read code
while (reader.read()) {
    // print the code type & text
    System.out.println("Type: " + reader.getCodeType() + " Text: " + reader.getCodeText());
}