zxing maven生成彩色带logo的二维码
一 、maven导入需要的jar包
二、生成彩色二维码代码
/**
* @describe 生成彩色的二维码的类
* @author 清云
* @time 2018年8月26日下午4:02:00
*/
public class ColourORCode {
public static void main(String[] args) throws UnsupportedEncodingException {
// 依次为内容(不支持中文),宽,长,logo图标路径,储存路径
ColourORCode.encode("https://www.baidu.com/", 300, 300, "D:/testImage/qrcode.jpg");
}
// 二维码写码器
private static MultiFormatWriter mutiWriter = new MultiFormatWriter();
public static void encode(String content, int width, int height, String destImagePath) {
try {
//生成图片文件
ImageIO.write(genBarcode(content, width, height), "jpg", new File(destImagePath));
System.out.println("二维码生成成功！");
} catch (IOException e) {
e.printStackTrace();
} catch (WriterException e) {
e.printStackTrace();
}
}
/**
* 得到BufferedImage
*
* @param content 二维码显示的文本
* @param width 二维码的宽度
* @param height 二维码的高度
* @return
* @throws WriterException
* @throws IOException
*/
private static BufferedImage genBarcode(String content, int width, int height) throws WriterException, IOException {
//定义二维码内容参数
Map
//设置字符集编码格式
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
//设置容错等级，在这里我们使用M级别
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
// 生成二维码，参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
BitMatrix matrix = mutiWriter.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
// 二维矩阵转为一维像素数组
int halfW = matrix.getWidth() / 2;
int halfH = matrix.getHeight() / 2;
int[] pixels = new int[width * height];
for (int y = 0; y < matrix.getHeight(); y++) {
for (int x = 0; x < matrix.getWidth(); x++) {
// 二维码颜色（RGB）
int num1 = (int) (50 - (50.0 - 13.0) / matrix.getHeight()
* (y + 1));
int num2 = (int) (165 - (165.0 - 72.0) / matrix.getHeight()
* (y + 1));
int num3 = (int) (162 - (162.0 - 107.0)
/ matrix.getHeight() * (y + 1));
Color color = new Color(num1, num2, num3);
int colorInt = color.getRGB();
// 此处可以修改二维码的颜色，可以分别制定二维码和背景的颜色；
pixels[y * width + x] = matrix.get(x, y) ? colorInt : 16777215;// 0x000000:0xffffff
}
}
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
image.getRaster().setDataElements(0, 0, width, height, pixels);
return image;
}
}
三、生成彩色带logo二维码代码
/**
* @describe 生成带图片的二维码
* @author 清云
* @time 2018年8月26日下午4:07:44
*/
public class ColorImageORCode {
// 图片宽度的一半
private static final int IMAGE_WIDTH = 100;
private static final int IMAGE_HEIGHT = 100;
private static final int IMAGE_HALF_WIDTH = IMAGE_WIDTH / 2;
private static final int FRAME_WIDTH = 2;
// 二维码写码器
private static MultiFormatWriter mutiWriter = new MultiFormatWriter();
public static void encode(String content, int width, int height, String srcImagePath, String destImagePath) {
try {
//生成图片文件
ImageIO.write(genBarcode(content, width, height, srcImagePath), "jpg", new File(destImagePath));
System.out.println("二维码生成成功！");
} catch (IOException e) {
e.printStackTrace();
} catch (WriterException e) {
e.printStackTrace();
}
}
/**
* 得到BufferedImage
*
* @param content 二维码显示的文本
* @param width 二维码的宽度
* @param height 二维码的高度
* @return
* @throws WriterException
* @throws IOException
*/
private static BufferedImage genBarcode(String content, int width,
int height, String srcImagePath) throws WriterException,
IOException {
// 读取源图像
BufferedImage scaleImage = scale(srcImagePath, IMAGE_WIDTH,
IMAGE_HEIGHT, true);
int[][] srcPixels = new int[IMAGE_WIDTH][IMAGE_HEIGHT];
for (int i = 0; i < scaleImage.getWidth(); i++) {
for (int j = 0; j < scaleImage.getHeight(); j++) {
srcPixels[i][j] = scaleImage.getRGB(i, j);//图片的像素点
}
}
//编码
Map hints = new Hashtable
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
//设置容错等级，在这里我们使用M级别
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
// 生成二维码
BitMatrix matrix = mutiWriter.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
// 二维矩阵转为一维像素数组
int halfW = matrix.getWidth() / 2;
int halfH = matrix.getHeight() / 2;
int[] pixels = new int[width * height];
for (int y = 0; y < matrix.getHeight(); y++) {
for (int x = 0; x < matrix.getWidth(); x++) {
// 左上角颜色,根据自己需要调整颜色范围和颜色
/*if (x > 0 && x < 170 && y > 0 && y < 170) {
Color color = new Color(231, 144, 56);
int colorInt = color.getRGB();
pixels[y * width + x] = matrix.get(x, y) ? colorInt
: 16777215;
} else*/
// 读取图片
if (x > halfW - IMAGE_HALF_WIDTH
&& x < halfW + IMAGE_HALF_WIDTH
&& y > halfH - IMAGE_HALF_WIDTH
&& y < halfH + IMAGE_HALF_WIDTH) {
pixels[y * width + x] = srcPixels[x - halfW
+ IMAGE_HALF_WIDTH][y - halfH + IMAGE_HALF_WIDTH];
}
// 在图片四周形成边框
else if ((x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH
&& x < halfW - IMAGE_HALF_WIDTH + FRAME_WIDTH
&& y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH
+ IMAGE_HALF_WIDTH + FRAME_WIDTH)
|| (x > halfW + IMAGE_HALF_WIDTH - FRAME_WIDTH
&& x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH
&& y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH
+ IMAGE_HALF_WIDTH + FRAME_WIDTH)
|| (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH
&& x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH
&& y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH
- IMAGE_HALF_WIDTH + FRAME_WIDTH)
|| (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH
&& x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH
&& y > halfH + IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH
+ IMAGE_HALF_WIDTH + FRAME_WIDTH)) {
pixels[y * width + x] = 0xfffffff;
} else {
// 二维码颜色（RGB）
int num1 = (int) (50 - (50.0 - 13.0) / matrix.getHeight()
* (y + 1));
int num2 = (int) (165 - (165.0 - 72.0) / matrix.getHeight()
* (y + 1));
int num3 = (int) (162 - (162.0 - 107.0)
/ matrix.getHeight() * (y + 1));
Color color = new Color(num1, num2, num3);
int colorInt = color.getRGB();
// 此处可以修改二维码的颜色，可以分别制定二维码和背景的颜色；
pixels[y * width + x] = matrix.get(x, y) ? colorInt : 16777215;// 0x000000:0xffffff
}
}
}
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
image.getRaster().setDataElements(0, 0, width, height, pixels);
return image;
}
/**
* 把传入的原始图像按高度和宽度进行缩放，生成符合要求的图标
*
* @param srcImageFile 源文件地址
* @param height 目标高度
* @param width 目标宽度
* @param hasFiller 比例不对时是否需要补白：true为补白; false为不补白;
* @throws IOException
*/
private static BufferedImage scale(String srcImageFile, int height, int width, boolean hasFiller) throws IOException {
double ratio = 0.0; // 缩放比例
File file = new File(srcImageFile);
BufferedImage srcImage = ImageIO.read(file);
Image destImage = srcImage.getScaledInstance(width, height,
BufferedImage.SCALE_SMOOTH);
// 计算比例
if ((srcImage.getHeight() > height) || (srcImage.getWidth() > width)) {
if (srcImage.getHeight() > srcImage.getWidth()) {
ratio = (new Integer(height)).doubleValue()
/ srcImage.getHeight();
} else {
ratio = (new Integer(width)).doubleValue()
/ srcImage.getWidth();
}
AffineTransformOp op = new AffineTransformOp(
AffineTransform.getScaleInstance(ratio, ratio), null);
destImage = op.filter(srcImage, null);
}
if (hasFiller) {// 补白
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D graphic = image.createGraphics();
graphic.setColor(Color.white);
graphic.fillRect(0, 0, width, height);
if (width == destImage.getWidth(null))
graphic.drawImage(destImage, 0,
(height - destImage.getHeight(null)) / 2,
destImage.getWidth(null), destImage.getHeight(null),
Color.white, null);//画图片
else
graphic.drawImage(destImage,
(width - destImage.getWidth(null)) / 2, 0,
destImage.getWidth(null), destImage.getHeight(null),
Color.white, null);
graphic.dispose();
destImage = image;
}
return (BufferedImage) destImage;
}
public static void main(String[] args) throws UnsupportedEncodingException {
// 依次为内容,宽,长,logo图标路径,储存路径
ColorImageORCode.encode("https://www.baidu.com/", 500, 500, "D:/testImage/1.jpg",
"D:/testImage/colorqrcode.jpg");
}
}