相当于扫码二维码获取里面对应的信息。。。
https://blog.csdn.net/kangcool_sn/article/details/85096386
package utils; import jp.sourceforge.qrcode.QRCodeDecoder; import jp.sourceforge.qrcode.exception.DecodingFailedException; import sun.misc.BASE64Decoder; import javax.imageio.ImageIO; import java.awt.image.BufferedImage; import java.io.*; /** * Created by kzx on 2016-11-22. */ public class Base64ToQrcode { /** * 解析二维码（QRCode） * * @param imgPath 图片路径 * @return */ public String decoderQRCode(String imgPath) { // QRCode 二维码图片的文件 File imageFile = new File(imgPath); BufferedImage bufImg = null; String content = null; try { bufImg = ImageIO.read(imageFile); QRCodeDecoder decoder = new QRCodeDecoder(); content = new String(decoder.decode(new TwoDimensionCodeImage(bufImg)), "utf-8"); } catch (IOException e) { System.out.println("Error: " + e.getMessage()); e.printStackTrace(); } catch (DecodingFailedException dfe) { System.out.println("Error: " + dfe.getMessage()); dfe.printStackTrace(); } return content; } /** * 解析二维码（QRCode） * * @param base64字符串 * @return */ public String decoderQRCode2(String base64Str) { BufferedImage bufImg = null; String content = null; try { byte[] bytes =this.base64Stream(base64Str); InputStream in_withcode = new ByteArrayInputStream(bytes); bufImg = ImageIO.read(in_withcode); QRCodeDecoder decoder = new QRCodeDecoder(); content = new String(decoder.decode(new TwoDimensionCodeImage(bufImg)), "utf-8"); } catch (IOException e) { System.out.println("Error: " + e.getMessage()); e.printStackTrace(); } catch (DecodingFailedException dfe) { System.out.println("Error: " + dfe.getMessage()); dfe.printStackTrace(); } return content; } public byte[] base64Stream(String imgStr){ BASE64Decoder decoder = new BASE64Decoder(); byte[] bytes = null; try { // Base64解码 bytes = decoder.decodeBuffer(imgStr); for (int i = 0; i < bytes.length; ++i) { if (bytes[i] < 0) {// 调整异常数据 bytes[i] += 256; } } }catch(Exception e){ } return bytes; } public static void main(String[] args) { String str="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"; Base64ToQrcode handler = new Base64ToQrcode(); try { //InputStream in_withcode = new ByteArrayInputStream(str.getBytes("UTF-8")); ByteArrayInputStream tInputStringStream = new ByteArrayInputStream(str.getBytes()); //byte[] bytes =handler.base64Stream(str); //InputStream in_withcode = new ByteArrayInputStream(bytes); String str1= handler.decoderQRCode2(str); System.out.println(str1); } catch (Exception e) { e.printStackTrace(); } } }
