Java 实现扫描二维码出现Hello world
时间: 2023-08-04 22:07:09 浏览: 144
Java生成二维码.
, 9, 5, 0, 15, 14, 2, 3, 12}
},
// S8
{
{13, 2, 8, 4, 6, 15, 11, 1您好!要实现在 Java 中扫描二维码并输出 "Hello world",您可以使用 Zxing 库。Z, 10, 9, 3, 14, 5, 0, 12, 7},
{1,xing 是一个基于 Apache 2.0 许可证的开源项目,用于识别各种码的图像。
15, 13, 8, 10, 3, 7, 4, 12, 5, 6以下是示例代码:
```java
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.image, 11, 0, 14, 9, 2},
{7, 11, 4, 1,io.ImageIO;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormat 9, 12, 14, 2, 0, 6, 10, 13, 15, 3Reader;
import com.google.zxing.NotFoundException;
import com.google.zxing.RGBLuminanceSource;
import com.google.zxing.ReaderException;
, 5, 8},
{2, 1, 14, 7, 4, 10, 8,import com.google.zxing.common.HybridBinarizer;
public class QRCodeReaderExample {
public static void main(String[] args) throws 13, 15, 12, 9, 0, 3, 5, 6, 11}
}
IOException, NotFoundException {
String filePath = "path/to/your/qrcode.png";
BufferedImage image = ImageIO.read(new File(filePath));
};
// PC1置换表
int PC1[56] = LuminanceSource source = new RGBLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
MultiFormatReader reader = new MultiFormatReader();
try {
String result = reader.decode(bitmap).getText();
if (result.equals("Hello world")) {
System.out.println("QR Code text: " + result);
} else {
System.out.println("QR Code text does not match: " + result);
}
} catch (ReaderException e) {
System.out.println("QR Code not found in the image");
}
}
}
```
在上面的示例代码中,我们使用与前一个示例相同的方法读取包含二维码的图像。然后,我们将读取到的字符串与 "Hello world" 进行比较,以确保二维码包含正确的文本。
希望这可以帮助到您!
阅读全文