java如何使用zxing识别图片条码( 二 ) _电脑

if (!ImageIO.write(image, format, stream)) {
throw new IOException("Could not write an image of format "
+ format);
}
}
}

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3第三
：给图片（二维码和条形码）添加log的java类。
1、具体代码如下所示：
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

//二维码添加 logo图标处置的方式, 仿照微信主动生当作二维码结果，有圆角边框， logo和二维码间有空白区， logo带有灰色边框
public class LogoConfig {

/**
* 设置 logo
*
* @param matrixImage
* 源二维码图片
* @return 返回带有logo的二维码图片
* @throws IOException
* @author Administrator sangwenhao
*/
public BufferedImage LogoMatrix(BufferedImage matrixImage)
throws IOException {
/**
* 读取二维码图片，并构建画图对象
*/
Graphics2D g2 = matrixImage.createGraphics();

int matrixWidth = matrixImage.getWidth();
int matrixHeigh = matrixImage.getHeight();

/**
* 读取Logo图片
*/
BufferedImage logo = ImageIO.read(new File("E:/file/log.jpg"));

// 起头绘制图片
g2.drawImage(logo, matrixWidth / 5 * 2, matrixHeigh / 5 * 2,
matrixWidth / 5, matrixHeigh / 5, null);// 绘制
BasicStroke stroke = new BasicStroke(5, BasicStroke.CAP_ROUND,
BasicStroke.JOIN_ROUND);
g2.setStroke(stroke);// 设置笔画对象
// 指定弧度的圆角矩形
RoundRectangle2D.Float round = new RoundRectangle2D.Float(
matrixWidth / 5 * 2, matrixHeigh / 5 * 2, matrixWidth / 5,
matrixHeigh / 5, 20, 20);
g2.setColor(Color.white);
g2.draw(round);// 绘制圆弧矩形

// 设置logo 有一道灰色边框
BasicStroke stroke2 = new BasicStroke(1, BasicStroke.CAP_ROUND,
BasicStroke.JOIN_ROUND);
g2.setStroke(stroke2);// 设置笔画对象
RoundRectangle2D.Float round2 = new RoundRectangle2D.Float(
matrixWidth / 5 * 2 + 2, matrixHeigh / 5 * 2 + 2,
matrixWidth / 5 - 4, matrixHeigh / 5 - 4, 20, 20);
g2.setColor(new Color(128, 128, 128));
g2.draw(round2);// 绘制圆弧矩形

g2.dispose();
matrixImage.flush();
return matrixImage;
}

}

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4第四
：生当作二维码和条形码测试代码。
1、具体代码如下所示：
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class EncodeTest {

public static void main(String[] args) throws Exception {
EncodeTest test = new EncodeTest();