主要代码,其他代码参考https://www.cnblogs.com/xz-luckydog/p/6402568.html
docker run -d -p 8085:8082 --name=qr_server -v /opt/data:/opt/data 192.168.1.129:5000/qrserver:1.0.0
PS : 代码Github地址
import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.HashMap; import java.util.Hashtable; import java.util.Map; import javax.imageio.ImageIO; import javax.swing.JFrame; import com.google.zxing.BarcodeFormat; import com.google.zxing.Binarizer; import com.google.zxing.BinaryBitmap; import com.google.zxing.DecodeHintType; import com.google.zxing.EncodeHintType; import com.google.zxing.LuminanceSource; import com.google.zxing.MultiFormatReader; import com.google.zxing.MultiFormatWriter; import com.google.zxing.NotFoundException; import com.google.zxing.Result; import com.google.zxing.WriterException; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; public class Main extends JFrame{ //C:UserseeDesktop public static String srcAddress = "C:\Users\bee\Desktop";//输入图片路径 public static String desAddress = "C:\Users\bee\Desktop";//输出图片路径 public static int width = 400; //二维码图片的宽 public static int height = 400; //二维码图片的高 public static String format = "png"; //二维码图片的格式 // 创建按钮 /* private static JButton button = new JButton("一键运行"); private static JLabel tip = new JLabel("提示:空");*/ public Main(){ /*setLayout(new GridLayout(2, 1)); add(button); add(tip);*/ } public static void main(String[] args) { /*Main frame = new Main(); frame.setTitle("批二维码处理"); frame.setSize(500, 125); frame.setLocationRelativeTo(null); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true);*/ File[] files = new File(srcAddress).listFiles(); for (int i = 0; i < files.length; i++) { if(files[i].getName().replaceAll("(.jpg)+","").length() != files[i].getName().length()){//是jpg图片替换成png convert("C:\Users\bee\Desktop\"+files[i].getName(), "png", "C:\Users\bee\Desktop\"+files[i].getName().substring(0, files[i].getName().length()-4)+".png"); System.out.println(files[i].getName()+"替换文件,删除jpg"); files[i].delete();//删除图片 } } myEvent(); } private static void myEvent(){ /* //鼠标监听 button.addMouseListener(new MouseAdapter(){ //单击事件 public void mouseClicked(MouseEvent e){*/ // System.out.println("鼠标被单击了"); File[] files = new File(srcAddress).listFiles(); /* for (int i = 0; i < files.length; i++) { if(files[i].getName().replaceAll("(.jpg)+","").length() != files[i].getName().length()){//是jpg图片替换成png convert("C:\Users\bee\Desktop\"+files[i].getName(), "png", "C:\Users\bee\Desktop\"+files[i].getName().substring(0, files[i].getName().length()-4)+".png"); System.out.println(files[i].getName()+"替换文件,删除jpg"); files[i].delete();//删除图片 } }*/ int sucNum = 0; int picNum = 0; int losNum = 0; for (int i = 0; i < files.length; i++) { //判断是否是图片 if(files[i].getName().replaceAll("(.png|.bmp)+","").length() != files[i].getName().length()) { picNum++; System.out.println(files[i].getName()); //判断图片是否是二维码 if(isQR(files[i].getName())){//是二维码 /* try { toMyTest(files[i].getName()); } catch (NotFoundException ex) { //return false; }*/ toMyTest(files[i].getName()); System.out.println("*************************************************"); sucNum++; }else{ losNum++; } } } System.out.println("提示:您好,桌面图片个数"+picNum+"个,成功"+sucNum+"个,失败"+(losNum)+"个"); //JOptionPane.showMessageDialog(null,"您好,桌面图片个数"+picNum+"个,成功"+sucNum+"个,失败"+(losNum)+"个","运行结果",JOptionPane.WARNING_MESSAGE); // } // }); } protected static boolean isQR(String name) { try { } catch (Exception e) { return false; } return true; } @SuppressWarnings("unused") private static void toMyTest(String fileName){ try { String filePath = srcAddress+"\"+fileName;//输入图片路径 String text = parseQRCode(filePath );//解析二维码 //生成二维码图片,并返回图片路径 String pathName = generateQRCode(text, width, height, format,fileName); System.out.println("生成二维码的图片路径: " + pathName); String content = parseQRCode(pathName); System.out.println("解析出二维码的图片的内容为: " + content); } catch (Exception e) { e.printStackTrace(); } } /** * 根据内容,生成指定宽高、指定格式的二维码图片 * * @param text 内容 * @param width 宽 * @param height 高 * @param format 图片格式 * @return 生成的二维码图片路径 * @throws IOException * @throws WriterException * @throws Exception */ private static String generateQRCode(String text, int width, int height, String format,String fileName) throws NotFoundException, IOException, WriterException { Hashtable<EncodeHintType, Object> hints = new Hashtable<>(); hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q);//容错率 hints.put(EncodeHintType.MARGIN, 1);//边距 BitMatrix bitMatrix1 = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints); BitMatrix bitMatrix = updateBit(bitMatrix1, 20);//自定义边框 String pathName = desAddress+"\"+(fileName.substring(0,fileName.indexOf("."))+".png"); File outputFile = new File(pathName); MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile); return pathName; } /** * 解决自定义边距问题 * @param matrix * @param margin * @return */ @SuppressWarnings("unused") private static BitMatrix updateBit(BitMatrix matrix, int margin){ int tempM = margin*2; int[] rec = matrix.getEnclosingRectangle(); //获取二维码图案的属性 int resWidth = rec[2] + tempM; int resHeight = rec[3] + tempM; BitMatrix resMatrix = new BitMatrix(resWidth, resHeight); // 按照自定义边框生成新的BitMatrix resMatrix.clear(); for(int i= margin; i < resWidth- margin; i++){ //循环,将二维码图案绘制到新的bitMatrix中 for(int j=margin; j < resHeight-margin; j++){ if(matrix.get(i-margin + rec[0], j-margin + rec[1])){ resMatrix.set(i,j); } } } return resMatrix; } /** * 解析指定路径下的二维码图片 * * @param filePath 二维码图片路径 * @return */ private static String parseQRCode(String filePath) { String content = ""; try { File file = new File(filePath); BufferedImage image = ImageIO.read(file); LuminanceSource source = new BufferedImageLuminanceSource(image); Binarizer binarizer = new HybridBinarizer(source); BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer); Map<DecodeHintType, Object> hints = new HashMap<>(); hints.put(DecodeHintType.CHARACTER_SET, "UTF-8"); MultiFormatReader formatReader = new MultiFormatReader(); Result result = formatReader.decode(binaryBitmap, hints); System.out.println("result 为:" + result.toString()); System.out.println("resultFormat 为:" + result.getBarcodeFormat()); System.out.println("resultText 为:" + result.getText()); //设置返回值 content = result.getText(); } catch (Exception e) { e.printStackTrace(); } return content; } /** * * @param source 源图片路径 * @param formatName 将要转换的图片格式 * @param result 目标图片路径 */ public static void convert(String source, String formatName, String result) { try { File f = new File(source); f.canRead(); BufferedImage src = ImageIO.read(f); ImageIO.write(src, formatName, new File(result)); } catch (Exception e) { e.printStackTrace(); } } }
图片处理操作
import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Toolkit; import java.awt.color.ColorSpace; import java.awt.geom.AffineTransform; import java.awt.image.AffineTransformOp; import java.awt.image.BufferedImage; import java.awt.image.ColorConvertOp; import java.awt.image.CropImageFilter; import java.awt.image.FilteredImageSource; import java.awt.image.ImageFilter; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; public class ImageUtils { /** * 几种常见的图片格式 */ public static String IMAGE_TYPE_GIF = "gif";// 图形交换格式 public static String IMAGE_TYPE_JPG = "jpg";// 联合照片专家组 public static String IMAGE_TYPE_JPEG = "jpeg";// 联合照片专家组 public static String IMAGE_TYPE_BMP = "bmp";// 英文Bitmap(位图)的简写,它是Windows操作系统中的标准图像文件格式 public static String IMAGE_TYPE_PNG = "png";// 可移植网络图形 public static String IMAGE_TYPE_PSD = "psd";// Photoshop的专用格式Photoshop /** * 程序入口:用于测试 * @param args */ public static void main(String[] args) { // 1-缩放图像: // 方法一:按比例缩放 // ImageUtils.scale("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_scale.jpg", 2, true);//测试OK // 方法二:按高度和宽度缩放 // ImageUtils.scale2("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_scale2.jpg", 500, 300, true);//测试OK // 2-切割图像: // 方法一:按指定起点坐标和宽高切割,单位是像素 ImageUtils.cut("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_cut.jpg", 0, 0, 400, 400 );//测试OK // 方法二:指定切片的行数和列数:如下切成四分 // ImageUtils.cut2("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/", 2, 2 );//测试OK // 方法三:指定切片的宽度和高度 //ImageUtils.cut3("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/", 300, 300 );//测试OK // 3-图像类型转换: //ImageUtils.convert("e:/abc.jpg", "GIF", "e:/abc_convert.gif");//测试OK /* // 4-彩色转黑白: // ImageUtils.gray("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_gray.jpg");//测试OK // 5-给图片添加文字水印:x:负数向左,正数向右 y:负数向上,正数向下 // 方法一: // ImageUtils.pressText("我是水印文字","C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_pressText.jpg","微软雅黑",Font.BOLD,Color.red,80, -100, -100, 0.5f);//测试OK // 方法二: // ImageUtils.pressText2("我也是水印文字", "C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_pressText2.jpg", "黑体", 36, Color.white, 80, 0, 0, 0.5f);//测试OK // 6-给图片添加图片水印: // ImageUtils.pressImage("e:/abc2.jpg", "e:/abc.jpg","e:/abc_pressImage.jpg", 0, 0, 0.5f);//测试OK * */ } /** * 缩放图像(按比例缩放) * @param srcImageFile 源图像文件地址 * @param result 缩放后的图像地址 * @param scale 缩放比例 * @param flag 缩放选择:true 放大; false 缩小; */ public final static void scale(String srcImageFile, String result, int scale, boolean flag) { try { BufferedImage src = ImageIO.read(new File(srcImageFile)); // 读入文件 int width = src.getWidth(); // 得到源图宽 int height = src.getHeight(); // 得到源图长 if (flag) {// 放大 width = width * scale; height = height * scale; } else {// 缩小 width = width / scale; height = height / scale; } Image image = src.getScaledInstance(width, height, Image.SCALE_DEFAULT); BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics g = tag.getGraphics(); g.drawImage(image, 0, 0, null); // 绘制缩小后的图 g.dispose(); ImageIO.write(tag, "JPEG", new File(result));// 输出到文件流 } catch (IOException e) { e.printStackTrace(); } } /** * 缩放图像(按高度和宽度缩放) * @param srcImageFile 源图像文件地址 * @param result 缩放后的图像地址 * @param height 缩放后的高度 * @param width 缩放后的宽度 * @param bb 比例不对时是否需要补白:true为补白; false为不补白; */ public final static void scale2(String srcImageFile, String result, int height, int width, boolean bb) { try { double ratio = 0.0; // 缩放比例 File f = new File(srcImageFile); BufferedImage bi = ImageIO.read(f); Image itemp = bi.getScaledInstance(width, height, bi.SCALE_SMOOTH); // 计算比例 if ((bi.getHeight() > height) || (bi.getWidth() > width)) { if (bi.getHeight() > bi.getWidth()) { ratio = (new Integer(height)).doubleValue() / bi.getHeight(); } else { ratio = (new Integer(width)).doubleValue() / bi.getWidth(); } AffineTransformOp op = new AffineTransformOp(AffineTransform .getScaleInstance(ratio, ratio), null); itemp = op.filter(bi, null); } if (bb) {//补白 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics2D g = image.createGraphics(); g.setColor(Color.white); g.fillRect(0, 0, width, height); if (width == itemp.getWidth(null)) g.drawImage(itemp, 0, (height - itemp.getHeight(null)) / 2, itemp.getWidth(null), itemp.getHeight(null), Color.white, null); else g.drawImage(itemp, (width - itemp.getWidth(null)) / 2, 0, itemp.getWidth(null), itemp.getHeight(null), Color.white, null); g.dispose(); itemp = image; } ImageIO.write((BufferedImage) itemp, "JPEG", new File(result)); } catch (IOException e) { e.printStackTrace(); } } /** * 图像切割(按指定起点坐标和宽高切割) * @param srcImageFile 源图像地址 * @param result 切片后的图像地址 * @param x 目标切片起点坐标X * @param y 目标切片起点坐标Y * @param width 目标切片宽度 * @param height 目标切片高度 */ public final static void cut(String srcImageFile, String result, int x, int y, int width, int height) { try { // 读取源图像 BufferedImage bi = ImageIO.read(new File(srcImageFile)); int srcWidth = bi.getHeight(); // 源图宽度 int srcHeight = bi.getWidth(); // 源图高度 if (srcWidth > 0 && srcHeight > 0) { Image image = bi.getScaledInstance(srcWidth, srcHeight, Image.SCALE_DEFAULT); // 四个参数分别为图像起点坐标和宽高 // 即: CropImageFilter(int x,int y,int width,int height) ImageFilter cropFilter = new CropImageFilter(x, y, width, height); Image img = Toolkit.getDefaultToolkit().createImage( new FilteredImageSource(image.getSource(), cropFilter)); BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics g = tag.getGraphics(); g.drawImage(img, 0, 0, width, height, null); // 绘制切割后的图 g.dispose(); // 输出为文件 ImageIO.write(tag, "JPEG", new File(result)); } } catch (Exception e) { e.printStackTrace(); } } /** * 图像切割(指定切片的行数和列数) * @param srcImageFile 源图像地址 * @param descDir 切片目标文件夹 * @param rows 目标切片行数。默认2,必须是范围 [1, 20] 之内 * @param cols 目标切片列数。默认2,必须是范围 [1, 20] 之内 */ public final static void cut2(String srcImageFile, String descDir, int rows, int cols) { try { if(rows<=0||rows>20) rows = 2; // 切片行数 if(cols<=0||cols>20) cols = 2; // 切片列数 // 读取源图像 BufferedImage bi = ImageIO.read(new File(srcImageFile)); int srcWidth = bi.getHeight(); // 源图宽度 int srcHeight = bi.getWidth(); // 源图高度 if (srcWidth > 0 && srcHeight > 0) { Image img; ImageFilter cropFilter; Image image = bi.getScaledInstance(srcWidth, srcHeight, Image.SCALE_DEFAULT); int destWidth = srcWidth; // 每张切片的宽度 int destHeight = srcHeight; // 每张切片的高度 // 计算切片的宽度和高度 if (srcWidth % cols == 0) { destWidth = srcWidth / cols; } else { destWidth = (int) Math.floor(srcWidth / cols) + 1; } if (srcHeight % rows == 0) { destHeight = srcHeight / rows; } else { destHeight = (int) Math.floor(srcWidth / rows) + 1; } // 循环建立切片 // 改进的想法:是否可用多线程加快切割速度 for (int i = 0; i < rows; i++) { for (int j = 0; j < cols; j++) { // 四个参数分别为图像起点坐标和宽高 // 即: CropImageFilter(int x,int y,int width,int height) cropFilter = new CropImageFilter(j * destWidth, i * destHeight, destWidth, destHeight); img = Toolkit.getDefaultToolkit().createImage( new FilteredImageSource(image.getSource(), cropFilter)); BufferedImage tag = new BufferedImage(destWidth, destHeight, BufferedImage.TYPE_INT_RGB); Graphics g = tag.getGraphics(); g.drawImage(img, 0, 0, null); // 绘制缩小后的图 g.dispose(); // 输出为文件 ImageIO.write(tag, "JPEG", new File(descDir + "_r" + i + "_c" + j + ".jpg")); } } } } catch (Exception e) { e.printStackTrace(); } } /** * 图像切割(指定切片的宽度和高度) * @param srcImageFile 源图像地址 * @param descDir 切片目标文件夹 * @param destWidth 目标切片宽度。默认200 * @param destHeight 目标切片高度。默认150 */ public final static void cut3(String srcImageFile, String descDir, int destWidth, int destHeight) { try { if(destWidth<=0) destWidth = 200; // 切片宽度 if(destHeight<=0) destHeight = 150; // 切片高度 // 读取源图像 BufferedImage bi = ImageIO.read(new File(srcImageFile)); int srcWidth = bi.getHeight(); // 源图宽度 int srcHeight = bi.getWidth(); // 源图高度 if (srcWidth > destWidth && srcHeight > destHeight) { Image img; ImageFilter cropFilter; Image image = bi.getScaledInstance(srcWidth, srcHeight, Image.SCALE_DEFAULT); int cols = 0; // 切片横向数量 int rows = 0; // 切片纵向数量 // 计算切片的横向和纵向数量 if (srcWidth % destWidth == 0) { cols = srcWidth / destWidth; } else { cols = (int) Math.floor(srcWidth / destWidth) + 1; } if (srcHeight % destHeight == 0) { rows = srcHeight / destHeight; } else { rows = (int) Math.floor(srcHeight / destHeight) + 1; } // 循环建立切片 // 改进的想法:是否可用多线程加快切割速度 for (int i = 0; i < rows; i++) { for (int j = 0; j < cols; j++) { // 四个参数分别为图像起点坐标和宽高 // 即: CropImageFilter(int x,int y,int width,int height) cropFilter = new CropImageFilter(j * destWidth, i * destHeight, destWidth, destHeight); img = Toolkit.getDefaultToolkit().createImage( new FilteredImageSource(image.getSource(), cropFilter)); BufferedImage tag = new BufferedImage(destWidth, destHeight, BufferedImage.TYPE_INT_RGB); Graphics g = tag.getGraphics(); g.drawImage(img, 0, 0, null); // 绘制缩小后的图 g.dispose(); // 输出为文件 ImageIO.write(tag, "JPEG", new File(descDir + "_r" + i + "_c" + j + ".jpg")); } } } } catch (Exception e) { e.printStackTrace(); } } /** * 图像类型转换:GIF->JPG、GIF->PNG、PNG->JPG、PNG->GIF(X)、BMP->PNG * @param srcImageFile 源图像地址 * @param formatName 包含格式非正式名称的 String:如JPG、JPEG、GIF等 * @param destImageFile 目标图像地址 */ public final static void convert(String srcImageFile, String formatName, String destImageFile) { try { File f = new File(srcImageFile); f.canRead(); f.canWrite(); BufferedImage src = ImageIO.read(f); ImageIO.write(src, formatName, new File(destImageFile)); } catch (Exception e) { e.printStackTrace(); } } /** * 彩色转为黑白 * @param srcImageFile 源图像地址 * @param destImageFile 目标图像地址 */ public final static void gray(String srcImageFile, String destImageFile) { try { BufferedImage src = ImageIO.read(new File(srcImageFile)); ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY); ColorConvertOp op = new ColorConvertOp(cs, null); src = op.filter(src, null); ImageIO.write(src, "JPEG", new File(destImageFile)); } catch (IOException e) { e.printStackTrace(); } } /** * 给图片添加文字水印 * @param pressText 水印文字 * @param srcImageFile 源图像地址 * @param destImageFile 目标图像地址 * @param fontName 水印的字体名称 * @param fontStyle 水印的字体样式 * @param color 水印的字体颜色 * @param fontSize 水印的字体大小 * @param x 修正值 * @param y 修正值 * @param alpha 透明度:alpha 必须是范围 [0.0, 1.0] 之内(包含边界值)的一个浮点数字 */ public final static void pressText(String pressText, String srcImageFile, String destImageFile, String fontName, int fontStyle, Color color, int fontSize,int x, int y, float alpha) { try { File img = new File(srcImageFile); Image src = ImageIO.read(img); int width = src.getWidth(null); int height = src.getHeight(null); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics2D g = image.createGraphics(); g.drawImage(src, 0, 0, width, height, null); g.setColor(color); g.setFont(new Font(fontName, fontStyle, fontSize)); g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha)); // 在指定坐标绘制水印文字 g.drawString(pressText, (width - (getLength(pressText) * fontSize)) / 2 + x, (height - fontSize) / 2 + y); g.dispose(); ImageIO.write((BufferedImage) image, "JPEG", new File(destImageFile));// 输出到文件流 } catch (Exception e) { e.printStackTrace(); } } /** * 给图片添加文字水印 * @param pressText 水印文字 * @param srcImageFile 源图像地址 * @param destImageFile 目标图像地址 * @param fontName 字体名称 * @param fontStyle 字体样式 * @param color 字体颜色 * @param fontSize 字体大小 * @param x 修正值 * @param y 修正值 * @param alpha 透明度:alpha 必须是范围 [0.0, 1.0] 之内(包含边界值)的一个浮点数字 */ public final static void pressText2(String pressText, String srcImageFile,String destImageFile, String fontName, int fontStyle, Color color, int fontSize, int x, int y, float alpha) { try { File img = new File(srcImageFile); Image src = ImageIO.read(img); int width = src.getWidth(null); int height = src.getHeight(null); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics2D g = image.createGraphics(); g.drawImage(src, 0, 0, width, height, null); g.setColor(color); g.setFont(new Font(fontName, fontStyle, fontSize)); g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha)); // 在指定坐标绘制水印文字 g.drawString(pressText, (width - (getLength(pressText) * fontSize)) / 2 + x, (height - fontSize) / 2 + y); g.dispose(); ImageIO.write((BufferedImage) image, "JPEG", new File(destImageFile)); } catch (Exception e) { e.printStackTrace(); } } /** * 给图片添加图片水印 * @param pressImg 水印图片 * @param srcImageFile 源图像地址 * @param destImageFile 目标图像地址 * @param x 修正值。 默认在中间 * @param y 修正值。 默认在中间 * @param alpha 透明度:alpha 必须是范围 [0.0, 1.0] 之内(包含边界值)的一个浮点数字 */ public final static void pressImage(String pressImg, String srcImageFile,String destImageFile, int x, int y, float alpha) { try { File img = new File(srcImageFile); Image src = ImageIO.read(img); int wideth = src.getWidth(null); int height = src.getHeight(null); BufferedImage image = new BufferedImage(wideth, height, BufferedImage.TYPE_INT_RGB); Graphics2D g = image.createGraphics(); g.drawImage(src, 0, 0, wideth, height, null); // 水印文件 Image src_biao = ImageIO.read(new File(pressImg)); int wideth_biao = src_biao.getWidth(null); int height_biao = src_biao.getHeight(null); g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha)); g.drawImage(src_biao, (wideth - wideth_biao) / 2, (height - height_biao) / 2, wideth_biao, height_biao, null); // 水印文件结束 g.dispose(); ImageIO.write((BufferedImage) image, "JPEG", new File(destImageFile)); } catch (Exception e) { e.printStackTrace(); } } /** * 计算text的长度(一个中文算两个字符) * @param text * @return */ public final static int getLength(String text) { int length = 0; for (int i = 0; i < text.length(); i++) { if (new String(text.charAt(i) + "").getBytes().length > 1) { length += 2; } else { length += 1; } } return length / 2; } }
图片合并
//package com.hcj.july19.am; //导入需要的包 import java.io.*; import java.io.File; import java.io.FileOutputStream; import java.awt.Graphics; import java.awt.Image; import java.awt.image.BufferedImage; /* * 当导入一下这两个包时,MyEclipse会报错: * Access restriction: The type JPEGImageEncoder is not accessible due to restriction on required library C:Javajre1.6.0_07lib t.jar * 解决方法 * Eclipse默认把这些受访问限制的API设成了ERROR。 * 只要把Windows-Preferences-Java-Complicer-Errors/Warnings里面的 * Deprecated and restricted API中的Forbidden references(access rules)选为Warning就可以编译通过。 */ import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class ImageTest { public ImageTest() {} public static void main(String[] args) { try { ImageTest test = new ImageTest(); test.ImageTset1(); } catch (Exception e) { System.out.print(e); } } /** * 合成支付宝和二维码的图片 * @throws Exception */ public void ImageTset1() throws Exception { //创建四个文件对象(注:这里四张图片的宽度都是相同的,因此下文定义BufferedImage宽度就取第一只的宽度就行了) File _file1 = new File("C:/Users/bee/Desktop/test/qrcode.png"); File _file2 = new File("C:/Users/bee/Desktop/test/qrcode_b.png"); //File _file3 = new File("C:/Users/bee/Desktop/test/3.jpg"); //File _file4 = new File("C:/Users/bee/Desktop/test/4.jpg"); Image src1 = javax.imageio.ImageIO.read(_file1); Image src2 = javax.imageio.ImageIO.read(_file2); //Image src3 = javax.imageio.ImageIO.read(_file3); //Image src4 = javax.imageio.ImageIO.read(_file4); //获取图片的宽度 int width1 = src1.getWidth(null); int width2 = src2.getWidth(null); //获取各个图像的高度 int height1 = src1.getHeight(null); int height2 = src2.getHeight(null); //int height3 = src3.getHeight(null); //int height4 = src4.getHeight(null); //构造一个类型为预定义图像类型之一的 BufferedImage。 宽度为第一只的宽度,高度为各个图片高度之和 BufferedImage tag = new BufferedImage(width2, height2 , BufferedImage.TYPE_INT_RGB); //创建输出流 FileOutputStream out = new FileOutputStream("C:/Users/bee/Desktop/test/QRMap.jpg"); //绘制合成图像 Graphics g = tag.createGraphics(); g.drawImage(src2, 0, 0, width2 , height2, null); g.drawImage(src1, 400, 300, width1, height1, null); //g.drawImage(src3, 0, height1 + height2, width, height3, null); //g.drawImage(src4, 0, height1 + height2 + height3, width, height4, null); // 释放此图形的上下文以及它使用的所有系统资源。 g.dispose(); //将绘制的图像生成至输出流 JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); encoder.encode(tag); //关闭输出流 out.close(); System.out.println("藏宝图出来了"); } public void ImageTset() throws Exception { //创建四个文件对象(注:这里四张图片的宽度都是相同的,因此下文定义BufferedImage宽度就取第一只的宽度就行了) File _file1 = new File("C:/Users/bee/Desktop/test/1.jpg"); File _file2 = new File("C:/Users/bee/Desktop/test/2.jpg"); File _file3 = new File("C:/Users/bee/Desktop/test/3.jpg"); File _file4 = new File("C:/Users/bee/Desktop/test/4.jpg"); Image src1 = javax.imageio.ImageIO.read(_file1); Image src2 = javax.imageio.ImageIO.read(_file2); Image src3 = javax.imageio.ImageIO.read(_file3); Image src4 = javax.imageio.ImageIO.read(_file4); //获取图片的宽度 int width = src1.getWidth(null); //获取各个图像的高度 int height1 = src1.getHeight(null); int height2 = src2.getHeight(null); int height3 = src3.getHeight(null); int height4 = src4.getHeight(null); //构造一个类型为预定义图像类型之一的 BufferedImage。 宽度为第一只的宽度,高度为各个图片高度之和 BufferedImage tag = new BufferedImage(width, height1 + height2 + height3 + height4, BufferedImage.TYPE_INT_RGB); //创建输出流 FileOutputStream out = new FileOutputStream("C:/Users/bee/Desktop/test/treasureMap.jpg"); //绘制合成图像 Graphics g = tag.createGraphics(); g.drawImage(src1, 0, 0, width, height1, null); g.drawImage(src2, 0, height1, width , height2, null); g.drawImage(src3, 0, height1 + height2, width, height3, null); g.drawImage(src4, 0, height1 + height2 + height3, width, height4, null); g.drawI // 释放此图形的上下文以及它使用的所有系统资源。 g.dispose(); //将绘制的图像生成至输出流 JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); encoder.encode(tag); //关闭输出流 out.close(); System.out.println("藏宝图出来了"); } }