DevLab/java/CodeImgUtil.java at master · mo2g/DevLab · GitHub

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/* Copyright (C) 2022 GrmPay - All Rights Reserved */

packagegrm.agent.util;

importcom.alibaba.fastjson.JSON;
importcom.alibaba.fastjson.JSONObject;
importcom.google.zxing.*;
importcom.google.zxing.client.j2se.BufferedImageLuminanceSource;
importcom.google.zxing.client.j2se.MatrixToImageWriter;
importcom.google.zxing.common.BitMatrix;
importcom.google.zxing.common.HybridBinarizer;
importcom.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
importorg.slf4j.Logger;
importorg.slf4j.LoggerFactory;

importjavax.imageio.ImageIO;
importjava.awt.*;
importjava.awt.geom.AffineTransform;
importjava.awt.image.AffineTransformOp;
importjava.awt.image.BufferedImage;
importjava.io.File;
importjava.io.IOException;
importjava.io.OutputStream;
importjava.net.URL;
importjava.nio.file.FileSystems;
importjava.nio.file.Path;
importjava.util.ArrayList;
importjava.util.HashMap;
importjava.util.List;
importjava.util.Map;

/*
* 二维码生成器
*
* @author GrmPayDev
*/
publicclassCodeImgUtil {

privatestaticfinalLogger_log = LoggerFactory.getLogger(CodeImgUtil.class);

// 二维码尺寸List
privatestaticList<Integer> sizeList = newArrayList<Integer>();

static {
sizeList.add(258);
sizeList.add(344);
sizeList.add(430);
sizeList.add(860);
sizeList.add(1280);
	}

publicstaticList<Integer> getEwmSizeList() {
returnsizeList;
	}


// 图片宽度的一般
privatestaticfinalintIMAGE_WIDTH = 25;
privatestaticfinalintIMAGE_HEIGHT = 25;
privatestaticfinalintIMAGE_HALF_WIDTH = IMAGE_WIDTH / 2;
privatestaticfinalintFRAME_WIDTH = 2;

// 二维码写码器
privatestaticMultiFormatWritermutiWriter = newMultiFormatWriter();

/**
 *
 * @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
 * @param srcImagePath
 * 中间嵌套的图片
 * @param destImagePath
 * 二维码生成的地址
 */
publicstaticvoidencode(Stringcontent, intwidth, intheight,
StringsrcImagePath, StringdestImagePath, StringfileName) {
try {
Filedir = newFile(destImagePath);
_log.error("==================" + destImagePath);
_log.error("==================" + srcImagePath);
if (!dir.exists()) {
_log.error("==================notExist");
booleanresult = dir.mkdirs();
_log.error("==================midirsResult" + result);
 }
// ImageIO.write 参数 1、BufferedImage 2、输出的格式 3、输出的文件
ImageIO.write(genBarcode(content, width, height, srcImagePath),
"jpg", newFile(destImagePath + fileName));

 } catch (Exceptione) {
_log.error("生成二维码出错", e);
 }
	}

/**
 * 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
 * @param srcImagePath
 * 中间嵌套的图片
 * @return
 * @throws WriterException
 * @throws IOException
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
privatestaticBufferedImagegenBarcode(Stringcontent, intwidth,
intheight, StringsrcImagePath) throwsWriterException,
IOException {
// 读取源图像
BufferedImagescaleImage = scale(srcImagePath, IMAGE_WIDTH,
IMAGE_HEIGHT, false);

int[][] srcPixels = newint[IMAGE_WIDTH][IMAGE_HEIGHT];
for (inti = 0; i < scaleImage.getWidth(); i++) {
for (intj = 0; j < scaleImage.getHeight(); j++) {
srcPixels[i][j] = scaleImage.getRGB(i, j);
 }
 }

java.util.Hashtablehint = newjava.util.Hashtable();
hint.put(EncodeHintType.CHARACTER_SET, "utf-8");
hint.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
hint.put(EncodeHintType.MARGIN, 1);
// 生成二维码
BitMatrixmatrix = mutiWriter.encode(content, BarcodeFormat.QR_CODE,
width, height, hint);

// 二维矩阵转为一维像素数组
inthalfW = matrix.getWidth() / 2;
inthalfH = matrix.getHeight() / 2;
int[] pixels = newint[width * height];

for (inty = 0; y < matrix.getHeight(); y++) {
for (intx = 0; x < matrix.getWidth(); x++) {
// 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
elseif ((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 {
// 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) ? 0xff000000
 : 0xfffffff;
 }
 }
 }

BufferedImageimage = newBufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
image.getRaster().setDataElements(0, 0, width, height, pixels);

returnimage;
	}

/**
 * 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
 */
privatestaticBufferedImagescale(StringsrcImageFile, intheight,
intwidth, booleanhasFiller) throwsIOException {
doubleratio = 0.0; // 缩放比例

URLurl = newURL(srcImageFile);

BufferedImagesrcImage = ImageIO.read(url);
ImagedestImage = srcImage.getScaledInstance(width, height,
BufferedImage.SCALE_SMOOTH);
// 计算比例
if ((srcImage.getHeight() > height) || (srcImage.getWidth() > width)) {
if (srcImage.getHeight() > srcImage.getWidth()) {
ratio = (newInteger(height)).doubleValue()
 / srcImage.getHeight();
 } else {
ratio = (newInteger(width)).doubleValue()
 / srcImage.getWidth();
 }
AffineTransformOpop = newAffineTransformOp(AffineTransform
 .getScaleInstance(ratio, ratio), null);
destImage = op.filter(srcImage, null);
 }
if (hasFiller) {// 补白
BufferedImageimage = newBufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2Dgraphic = 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);
 } 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;
	}

/**
 * 生成图像
 * filePath 存放图片的路径
 * fileName 图片的名称
 * info 生成图片的链接地址（例如：weixin://wxpay/s/Anp43md）
 * width 图片的宽度
 * height 图片的高度
 * @throws WriterException
 * @throws IOException
 */
publicstaticStringcodeImgEncode(StringfilePath, StringfileName, Stringinfo, intwidth, intheight) throwsWriterException, IOException {
Stringformat="png";
Map<EncodeHintType, Object> hints = newHashMap<EncodeHintType, Object>();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
BitMatrixbitMatrix = newMultiFormatWriter().encode(info,
BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵
Pathpath = FileSystems.getDefault().getPath(filePath, fileName);
Filedir = newFile(filePath);
_log.error("==================" + filePath);
if (!dir.exists()) {
_log.error("==================notExist");
booleanresult = dir.mkdirs();
_log.error("==================midirsResult" + result);
 }
MatrixToImageWriter.writeToPath(bitMatrix, format, path);// 输出图像
returnpath.toString();
 }


publicstaticvoidwriteQrCode(OutputStreamstream, Stringinfo, intwidth, intheight) throwsWriterException, IOException {
Stringformat="png";
Map<EncodeHintType, Object> hints = newHashMap<EncodeHintType, Object>();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
hints.put(EncodeHintType.MARGIN,0);
BitMatrixbitMatrix = newMultiFormatWriter().encode(info,
BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵
bitMatrix = deleteWhite(bitMatrix);
BufferedImagebi = MatrixToImageWriter.toBufferedImage(bitMatrix);
bi = zoomInImage(bi,width,height);
ImageIO.write(bi,format,stream); // 输出图像
//MatrixToImageWriter.writeToStream(bitMatrix, format, stream);// 输出图像
	}


/**
 * 解析图像
 */
publicstaticvoidcodeImgDecode() {
StringfilePath = "D://zxing.png";
BufferedImageimage;
try {
image = ImageIO.read(newFile(filePath));
LuminanceSourcesource = newBufferedImageLuminanceSource(image);
Binarizerbinarizer = newHybridBinarizer(source);
BinaryBitmapbinaryBitmap = newBinaryBitmap(binarizer);
Map<DecodeHintType, Object> hints = newHashMap<DecodeHintType, Object>();
hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
Resultresult = newMultiFormatReader().decode(binaryBitmap, hints);// 对图像进行解码
JSONObjectcontent = JSON.parseObject(result.getText());
System.out.println("图片中内容： ");
System.out.println("author： " + content.getString("author"));
System.out.println("zxing： " + content.getString("zxing"));
System.out.println("图片中格式： ");
System.out.println("encode： " + result.getBarcodeFormat());
 } catch (IOExceptione) {
e.printStackTrace();
 } catch (NotFoundExceptione) {
e.printStackTrace();
 }
 }

/**
 * 去除白边
 * */
privatestaticBitMatrixdeleteWhite(BitMatrixmatrix) {
int[] rec = matrix.getEnclosingRectangle();
intresWidth = rec[2] + 1;
intresHeight = rec[3] + 1;

BitMatrixresMatrix = newBitMatrix(resWidth, resHeight);
resMatrix.clear();
for (inti = 0; i < resWidth; i++) {
for (intj = 0; j < resHeight; j++) {
if (matrix.get(i + rec[0], j + rec[1])) {
resMatrix.set(i, j);
 }
 }
 }
returnresMatrix;
	}

publicstaticBufferedImagezoomInImage(BufferedImageoriginalImage, intwigth, intheight){
BufferedImagenewImage = newBufferedImage(wigth,height,originalImage.getType());
Graphicsg = newImage.getGraphics();
g.drawImage(originalImage,0,0,wigth,height,null);
g.dispose();
returnnewImage;
	}

}