java生成二维码并且给二维码添加logo

java生成二维码并且给二维码添加logo

java生成二维码，具体代码如下所示：

package com.bus.wx.action.code;

import java.awt.BasicStroke;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.RenderingHints;

import java.awsRwbvntt.geom.RoundRectangle2D;

import java.awt.image.BufferedImage;

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.util.HashMap;

import java.util.Hashtable;

import java.util.Map;

import javax.imageio.ImageIO;

import javax.servlet.ServletOutputStream;

import org.springframework.context.annotation.Scope;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import sun.misc.BASE64Decoder;

import sun.misc.BASE64Encoder;

import com.bus.plugin.wx.action.WxAction;

import com.bus.wx.util.Limits;

import com.google.zxing.BarcodeFormat;

import com.google.zxing.EncodeHintType;

import com.google.zxing.MultiFormatWriter;

import com.google.zxing.client.j2se.MatrixToImageWriter;

import com.google.zxing.common.BitMatrix;

import com.google.zxing.qrcode.QRCodeWriter;

import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

import com.lys.sys.log.Log;

/**

* 条形码、二维码

* @author hwj

*

*/

@Scope(value = "prototype")

@Controller("Bar_Qr_Code_Action")

@RequestMapping(value="plug/wx/wwz/{bcflag}/barqrcode")

public class Bar_Qr_Code_Action extends WxAction{

private static final int LogoPart = 4;

private static final int BLACK = 0xFF000000;//用于设置图案的颜色

private static final int WHITE = 0xFFFFFFFF; sRwbvnt//用于背景色

String format = "png";

public static BufferedImage toBufferedImage(BitMatrix matrix) {

int width = matrix.getWidth();

int height = matrix.getHeight();

BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

for (int x = 0; x < width; x++) {

for (int y = 0; y < height; y++) {

image.setRGB(x, y, (matrix.get(x, y) ? BLACK : WHITE));

// image.setRGB(x, y, (matrix.get(x, y) ? Color.YELLOW.getRGB() : Color.CYAN.getRGB()));

}

}

return image;

}

public BufferedImage LogoMatrix(BufferedImage matrixImage) throws IOException{

/**

* 读取二维码图片，并构建绘图对象

*/

Graphics2D g2 = matrixImage.createGraphics();

int matrixWidth = matrixImage.getWidth();

int matrixHeigh = matrixImage.getHeight();

/**

* 读取Logo图片

*/

String path=request.getSession().getServletContext().getRealPath("/images/logo/dzjkklog.png");

BufferedImage logo = ImageIO.read(new File(path));

//开始绘制图片

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.disRwbvntspose();

matrixImage.flush() ;

return matrixImage ;

}

/**

* 生成二维码：直接将生成的二维码传输到前台页面

* @param bcflag

*/

@RequestMapping(value="createQrCodes",method = RequestMethod.GET)

public void createQrCodes(@PathVariable String bcflag,String dastid){

String url="扫二维码出现的内容";

if(url!=null&&!"".equals(url)){

ServletOutputStream stream=null;

try {

int width=430;

int height=430;

stream=response.getOutputStream();

QRCodeWriter writer=new QRCodeWriter();

Hashtable hints = new Hashtable();

hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);

hints.put(EncodeHintType.CHARACTER_SET, "utf-8");

hints.put(EncodeHintType.MARGIN, 1);//设置二维码边的空度，非负数

BitMatrix bitMatrix = new MultiFormatWriter().encode(url,//要编码的内容

BarcodeFormat.QR_CODE,

width, //条形码的宽度

height, //条形码的高度

hints);

//BitMatrix m=writer.encode(url, BarcodeFormat.QR_CODE, height,width);

BufferedImage image = toBufferedImage(bitMatrix);

image = LogoMatrix(image);

if (!ImageIO.write(image, format, stream)) {

throw new IOException("Could not write an image of format " + format);

}

} catch (Exception e) {

Log.in.info(e.getMessage());

}finally{

if(stream!=null){

try {

stream.flush();

stream.close();

} catch (IOException e) {

Log.in.info(e.getMessage());

}

}

}

}

}

}

总结

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