QRCode生成二维码和解析二维码java

import java.awt.image.BufferedImage; import java.io.File; import java.util.Hashtable; import javax.imageio.ImageIO; import com.google.zxing.BarcodeFormat; import com.google.zxing.BinaryBitmap; import com.google.zxing.DecodeHintType; import com.google.zxing.EncodeHintType; import com.google.zxing.LuminanceSource; import com.google.zxing.MultiFormatReader; import com.google.zxing.MultiFormatWriter; import com.google.zxing.Result; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.client.j2se.MatrixToImageWriter; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; public class QRGenernate { public void Encode(String contents, int width, int height, String imgPath) { Hashtable<Object, Object> hints = new Hashtable<Object, Object>(); hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L); hints.put(EncodeHintType.CHARACTER_SET, "GBK"); try { BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height, hints); MatrixToImageWriter .writeToFile(bitMatrix, "png", new File(imgPath)); } catch (Exception e) { e.printStackTrace(); } } public String Decode(String imgPath) { BufferedImage image = null; Result result = null; try { image = ImageIO.read(new File(imgPath)); if (image == null) { System.out.println("the decode image may be not exit."); } LuminanceSource source = new BufferedImageLuminanceSource(image); BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source)); Hashtable<Object, Object> hints = new Hashtable<Object, Object>(); hints.put(DecodeHintType.CHARACTER_SET, "GBK"); result = new MultiFormatReader().decode(bitmap, hints); return result.getText(); } catch (Exception e) { e.printStackTrace(); } return null; } public enum WifiCipherType { WIFICIPHER_WEP, WIFICIPHER_WPA, WIFICIPHER_NOPASS, WIFICIPHER_INVALID } public static void main(String args[]) { //生成的文件名�? String imgPath = "result.png"; String contents = "215asdfasdfasdfasdfasdf"; int width = 300, height = 300; QRGenernate handler = new QRGenernate(); //对以上信息进行编码生成图�? handler.Encode(contents, width, height, imgPath); System.out.println("SUCCESS to generate QRcode"); //对编码后的图片进行解析，确保编码后的文件没有问题 String result = handler.Decode("result.png"); System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"); System.out.println(result); } }