package com.imooc.zxing;import java.io.File;
import java.nio.file.Path;
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;/*** java代码生成二维码<br>* * @author Administrator**/
public class CreateQRCode {public static void main(String[] args) {int width = 300;int height = 300;String format = "png";String content = "http://www.hupu.com";// 定义二维码参数HashMap hints = new HashMap();hints.put(EncodeHintType.CHARACTER_SET, "utf-8");// 字符集hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);// 纠错级别hints.put(EncodeHintType.MARGIN, 2);// 空白try {BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, width, height, hints);Path file = new File("E:/code/img.png").toPath();MatrixToImageWriter.writeToPath(bitMatrix, format, file);} catch (Exception e) {e.printStackTrace();}}}

package com.imooc.zxing;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.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;public class ReadQRCode {public static void main(String[] args) {try {MultiFormatReader formatReader = new MultiFormatReader();File file = new File("E:/code/img.png");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");// 字符集
Result result = formatReader.decode(binaryBitmap, hints);System.out.println("解析之后的结果:" + result.toString());System.out.println("二维码格式类型:" + result.getBarcodeFormat());System.out.println("二维码文本内容:" + result.getText());} catch (Exception e) {e.printStackTrace();}}}