帮我写一个解析多种二维码的方案
时间: 2023-08-28 08:15:36 浏览: 47
要解析多种二维码,你需要使用多个二维码解析库,每个库都可以解析不同类型的二维码。以下是一个基于Java的解析多种二维码的示例代码:
```java
import com.google.zxing.*;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.QRCodeReader;
import net.sourceforge.zbar.*;
import org.bytedeco.javacpp.*;
import org.bytedeco.javacpp.lept.PIX;
import org.bytedeco.javacpp.tesseract.TessBaseAPI;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.Arrays;
import java.util.EnumMap;
import java.util.List;
import java.util.Map;
public class MultiQRCodeReader {
public static String readQRCode(String filePath) throws Exception {
File file = new File(filePath);
BufferedImage image = ImageIO.read(file);
// 使用zxing解析二维码
String zxingResult = readQRCodeByZxing(image);
if (zxingResult != null) {
return zxingResult;
}
// 使用zbar解析二维码
String zbarResult = readQRCodeByZbar(image);
if (zbarResult != null) {
return zbarResult;
}
// 使用tesseract-ocr解析二维码
String ocrResult = readQRCodeByOcr(image);
if (ocrResult != null) {
return ocrResult;
}
// 无法解析
return null;
}
private static String readQRCodeByZxing(BufferedImage image) throws NotFoundException {
LuminanceSource source = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Result result = new QRCodeReader().decode(bitmap);
return result.getText();
}
private static String readQRCodeByZbar(BufferedImage image) throws Exception {
ImageScanner scanner = new ImageScanner();
scanner.setConfig(0, Config.ENABLE, 1);
int width = image.getWidth();
int height = image.getHeight();
byte[] imageData = ((java.awt.image.DataBufferByte) image.getRaster().getDataBuffer()).getData();
Image barcode = new Image(width, height, "Y800");
barcode.setData(imageData);
scanner.scanImage(barcode);
SymbolSet symbolSet = scanner.getResults();
for (Symbol symbol : symbolSet) {
if (symbol.getType() == Symbol.QRCODE) {
return symbol.getData();
}
}
return null;
}
private static String readQRCodeByOcr(BufferedImage image) throws Exception {
BytePointer outText;
PIX pix = Leptonica1.pixReadMem(
PointerPointer.toBytes(imageToArray(image)),
image.getWidth(),
image.getHeight(),
image.getColorModel().getPixelSize() / 8,
image.getWidth() * image.getColorModel().getPixelSize() / 8,
1);
TessBaseAPI api = new TessBaseAPI();
api.Init(null, "eng");
api.SetImage(pix);
outText = api.GetUTF8Text();
String result = outText.getString();
api.End();
outText.deallocate();
pix.deallocate();
return result;
}
private static byte[] imageToArray(BufferedImage image) {
int width = image.getWidth();
int height = image.getHeight();
int type = image.getType();
byte[] data = new byte[width * height * (type == BufferedImage.TYPE_BYTE_GRAY ? 1 : 3)];
int k = 0;
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++) {
int rgb = image.getRGB(j, i);
if (type == BufferedImage.TYPE_BYTE_GRAY) {
data[k++] = (byte) ((rgb >> 16) & 0xff);
} else {
data[k++] = (byte) ((rgb >> 16) & 0xff);
data[k++] = (byte) ((rgb >> 8) & 0xff);
data[k++] = (byte) (rgb & 0xff);
}
}
}
return data;
}
public static void main(String[] args) throws Exception {
String filePath = "example.png";
String result = readQRCode(filePath);
System.out.println("QR Code content: " + result);
}
}
```
上述代码使用了三个二维码解析库:zxing、zbar和tesseract-ocr。当无法使用一个库解析时,就切换到下一个库进行解析,直到解析成功或所有库都无法解析。你可以根据自己的需求,调整代码中使用的库和解析顺序。