????????
????????????com.google.zxing
????????????javase
????????????3.3.0
????????

package?com.bennyrhys.mall.util;

import?com.google.zxing.BarcodeFormat;
import?com.google.zxing.WriterException;
import?com.google.zxing.client.j2se.MatrixToImageWriter;
import?com.google.zxing.common.BitMatrix;
import?com.google.zxing.qrcode.QRCodeWriter;

import?java.io.IOException;
import?java.nio.file.FileSystems;
import?java.nio.file.Path;

/**
?*?描述：?????生成二維碼工具
?*/
public?class?QRCodeGenerator?{


????public?static?void?generateQRCodeImage(String?text,?int?width,?int?height,?String?filePath)
????????????throws?WriterException,?IOException?{
????????QRCodeWriter?qrCodeWriter?=?new?QRCodeWriter();
????????BitMatrix?bitMatrix?=?qrCodeWriter.encode(text,?BarcodeFormat.QR_CODE,?width,?height);
????????Path?path?=?FileSystems.getDefault().getPath(filePath);
????????MatrixToImageWriter.writeToPath(bitMatrix,?"PNG",?path);
????}

????public?static?void?main(String[]?args)?{
????????try?{
????????????generateQRCodeImage("Hello?World",?350,?350,?"E:/JAVA/mall/src/main/resources/images/QRTest.png");
????????}?catch?(WriterException?e)?{
????????????e.printStackTrace();
????????}?catch?(IOException?e)?{
????????????e.printStackTrace();
????????}
????}
}

???/**
?????*?生成二維碼
?????*?圖片可解析出訪問的支付對應(yīng)訂單號的支付連接
?????*?@param?orderNo?訂單號
?????*?@return?返回圖片地址
?????*/
????@Override
????public?String?qrcode(String?orderNo)?{
????????ServletRequestAttributes?attributes?=?(ServletRequestAttributes)?RequestContextHolder.getRequestAttributes();
????????HttpServletRequest?request?=?attributes.getRequest();

????????String?address?=?ip?+?":"?+?request.getLocalPort();
????????String?payUrl?=?"http://"?+?address?+?"/pay?orderNo="?+?orderNo;
????????try?{
????????????QRCodeGenerator.generateQRCodeImage(payUrl,?350,?350,?Constant.FILE_UPLOAD_PATH?+?orderNo?+?".png");
????????}?catch?(WriterException?e)?{
????????????e.printStackTrace();
????????}?catch?(IOException?e)?{
????????????e.printStackTrace();
????????}
????????String?pngAddress?=?"http://"?+?address?+?"/images-dev/"?+?orderNo?+?".png";
????????return?pngAddress;
????}