java生成二维码工具类

package com.runtime.extend.utils.CodeCreate;

import com.google.zxing.*;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
//import com.google.zxing.client.j2se.BufferedImageLuminanceSource;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.Hashtable;

/**
 *     
 * 项目名称：bic-xxzthzsgl   
 * 类名称：qrCodeCreateUtil   
 * 类描述：二维码生成工具类
 * 创建人：MFJ   
 * 创建时间：2019/1/10 8:50   
 * 修改备注：   
 *
 * @version  1.0       
 */
public class qrCodeCreateUtil {

 /**
 * 生成包含字符串信息的二维码图片
 *
 * @param outputStream 文件输出流路径
 * @param content 二维码携带信息
 * @param qrCodeSize 二维码图片大小
 * @param imageFormat 二维码的格式
 * @throws WriterException
 * @throws IOException
 */
 public static boolean createQrCode(OutputStream outputStream, String content, int qrCodeSize, String imageFormat) throws WriterException, IOException {
 //设置二维码纠错级别ＭＡＰ
 Hashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<EncodeHintType, ErrorCorrectionLevel>();
 hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L); // 矫错级别
 QRCodeWriter qrCodeWriter = new QRCodeWriter();
 //创建比特矩阵(位矩阵)的QR码编码的字符串
 BitMatrix byteMatrix = qrCodeWriter.encode(content, BarcodeFormat.QR_CODE, qrCodeSize, qrCodeSize, hintMap);
 // 使BufferedImage勾画QRCode (matrixWidth 是行二维码像素点)
 int matrixWidth = byteMatrix.getWidth();
 BufferedImage image = new BufferedImage(matrixWidth - 200, matrixWidth - 200, BufferedImage.TYPE_INT_RGB);
 image.createGraphics();
 Graphics2D graphics = (Graphics2D) image.getGraphics();
 graphics.setColor(Color.WHITE);
 graphics.fillRect(0, 0, matrixWidth, matrixWidth);
 // 使用比特矩阵画并保存图像
 graphics.setColor(Color.BLACK);
 for (int i = 0; i < matrixWidth; i++) {
 for (int j = 0; j < matrixWidth; j++) {
 if (byteMatrix.get(i, j)) {
 graphics.fillRect(i - 100, j - 100, 1, 1);
 }
 }
 }
 return ImageIO.write(image, imageFormat, outputStream);
 }

 /**
 * 读二维码并输出携带的信息
 */
// public static void readQrCode(InputStream inputStream) throws IOException{
// //从输入流中获取字符串信息
// BufferedImage image = ImageIO.read(inputStream);
// //将图像转换为二进制位图源
// LuminanceSource source = new BufferedImageLuminanceSource(image);
// BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
// QRCodeReader reader = new QRCodeReader();
// Result result = null ;
// try {
// result = reader.decode(bitmap);
// } catch (ReaderException e) {
// e.printStackTrace();
// }
// System.out.println(result.getText());
// }


 public static void main(String[] args) throws IOException, WriterException {

 createQrCode(new FileOutputStream(new File("d:\\qrcode.jpg")),"WE1231238239128sASDASDSADSDWEWWREWRERWSDFDFSDSDF123123123123213123",900,"JPEG");
// readQrCode(new FileInputStream(new File("d:\\qrcode.jpg")));
 }


}