本文实例为大家分享了java二维码的实现代码，供大家参考，具体内容如下
这次用到的jar包是zxing，没有用到core的jar包
先导入zxing.jar包
生成二维码
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package cn.huse.erweima;
import java.io.File;
import java.util.HashMap;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
/**
* 生成二维码
*
*/
public class CreateQRCode {
public static void main(String[] args) {
int width = 300;
int height = 300;
String format = "gif";
String content = "www.baidu.com";
//定义二维码的参数
HashMap hints = new HashMap<>();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
try {
BitMatrix matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height,hints);
File file = new File("e:"+File.separator+"new.gif");
MatrixToImageWriter.writeToFile(matrix, format, file);
} catch (Exception e) {
e.printStackTrace();
}
}
}
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解析二维码
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package cn.huse.erweima;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import javax.imageio.ImageIO;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;
//解析二维码
public class ReadQRCode {
public static void main(String[] args) {
MultiFormatReader formatReader = new MultiFormatReader();
File file = new File("e:"+File.separator+"new.gif");
try {
BufferedImage image = ImageIO.read(file);
BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));
HashMap hints = new HashMap<>();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
Result result = formatReader.decode(binaryBitmap,hints);
System.out.println(result.toString());
System.out.println(result.getBarcodeFormat());
System.out.println(result.getText());
} catch (NotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。