Java 生成二维码

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利用Google zxing生成二维码

1. maven依赖，maven只需引入javase模块就行，core模块会自动依赖导入

<dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>core</artifactId>
    <version>3.3.0</version>
</dependency>

<dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>javase</artifactId>
    <version>3.3.0</version>
</dependency>

2. 使用示例

public class QRCodeUtils {

    public static byte[] qrCode(String text, int width, int height) throws WriterException, IOException {
        QRCodeWriter qrCodeWriter = new QRCodeWriter();
        BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height);
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        MatrixToImageWriter.writeToStream(bitMatrix, "PNG", outputStream);
        return outputStream.toByteArray();
    }

}

 

来源：oschina

链接：https://my.oschina.net/pipimao/blog/3150886