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")));
}
}
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