java图片滑动验证码

package com.rt.util.verification; import java.awt.AlphaComposite; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Graphics2D; import java.awt.Rectangle; import java.awt.RenderingHints; import java.awt.image.BufferedImage; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.text.NumberFormat; import java.util.HashMap; import java.util.Iterator; import java.util.Map; import java.util.Random; import javax.imageio.ImageIO; import javax.imageio.ImageReadParam; import javax.imageio.ImageReader; import javax.imageio.stream.ImageInputStream; import com.rt.core.data.DataMap; /** * @description 图形验证码生成工具类 * @author SQW * @date 2019年4月30日 */ public class VerifyImageUtil { private static int ORI_WIDTH = 280; //源文件宽度 private static int ORI_HEIGHT = 171; //源文件高度 private static int WIDTH; //模板图宽度 private static int HEIGHT; //模板图高度 /** * @description 根据模板切图 * @author SQW * @date 2019年4月30日 */ public static Map<String, byte[]> pictureTemplatesCut(File templateFile, File targetFile, String templateType, String targetType,int X,int Y) throws Exception { Map<String, byte[]> pictureMap = new HashMap<>(); // 文件类型 String templateFiletype = templateType; String oriFiletype = targetType; if (StringUtils.isEmpty(templateFiletype) || StringUtils.isEmpty(oriFiletype)) { throw new RuntimeException("file type is empty"); } // 源文件流 File Orifile = targetFile; InputStream oriis = new FileInputStream(Orifile); // 模板图 BufferedImage imageTemplate = ImageIO.read(templateFile); WIDTH = imageTemplate.getWidth(); HEIGHT = imageTemplate.getHeight(); //generateCutoutCoordinates(); // 最终图像 BufferedImage newImage = new BufferedImage(WIDTH, HEIGHT, imageTemplate.getType()); Graphics2D graphics = newImage.createGraphics(); graphics.setBackground(Color.white); //graphics.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.3f)); int bold = 5; // 获取感兴趣的目标区域 BufferedImage targetImageNoDeal = getTargetArea(X, Y, WIDTH, HEIGHT, oriis, oriFiletype); // 根据模板图片抠图 newImage = DealCutPictureByTemplate(targetImageNoDeal, imageTemplate, newImage); // 设置“抗锯齿”的属性 graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); graphics.setStroke(new BasicStroke(bold, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL)); graphics.drawImage(newImage, 0, 0, null); graphics.dispose(); ByteArrayOutputStream os = new ByteArrayOutputStream();//新建流。 ImageIO.write(newImage, "png", os);//利用ImageIO类提供的write方法，将bi以png图片的数据模式写入流。 byte[] newImages = os.toByteArray(); pictureMap.put("newImage", newImages); // 源图生成遮罩 BufferedImage oriImage = ImageIO.read(Orifile); byte[] oriCopyImages = DealOriPictureByTemplate(oriImage, imageTemplate, X, Y); pictureMap.put("oriCopyImage", oriCopyImages); return pictureMap; } /** * 抠图后原图生成 * * @param oriImage * @param templateImage * @param x * @param y * @return * @throws Exception */ private static byte[] DealOriPictureByTemplate(BufferedImage oriImage, BufferedImage templateImage, int x, int y) throws Exception { // 源文件备份图像矩阵 支持alpha通道的rgb图像 BufferedImage ori_copy_image = new BufferedImage(oriImage.getWidth(), oriImage.getHeight(), BufferedImage.TYPE_4BYTE_ABGR); // 源文件图像矩阵 int[][] oriImageData = getData(oriImage); // 模板图像矩阵 int[][] templateImageData = getData(templateImage); //copy 源图做不透明处理 for (int i = 0; i < oriImageData.length; i++) { for (int j = 0; j < oriImageData[0].length; j++) { int rgb = oriImage.getRGB(i, j); int r = (0xff & rgb); int g = (0xff & (rgb >> 8)); int b = (0xff & (rgb >> 16)); //无透明处理 rgb = r + (g << 8) + (b << 16) + (255 << 24); ori_copy_image.setRGB(i, j, rgb); } } for (int i = 0; i < templateImageData.length; i++) { for (int j = 0; j < templateImageData[0].length - 5; j++) { int rgb = templateImage.getRGB(i, j); //对源文件备份图像(x+i,y+j)坐标点进行透明处理 if (rgb != 16777215 && rgb <= 0) { int rgb_ori = ori_copy_image.getRGB(x + i, y + j); int r = (0xff & rgb_ori); int g = (0xff & (rgb_ori >> 8)); int b = (0xff & (rgb_ori >> 16)); rgb_ori = r + (g << 8) + (b << 16) + (150 << 24); //源代码 //ori_copy_image.setRGB(x + i, y + j, rgb_ori); //修改后的值 ori_copy_image.setRGB(x + i, y + j, 65280); } else { //do nothing } } } ByteArrayOutputStream os = new ByteArrayOutputStream();//新建流。 ImageIO.write(ori_copy_image, "png", os);//利用ImageIO类提供的write方法，将bi以png图片的数据模式写入流。 byte b[] = os.toByteArray();//从流中获取数据数组。 return b; } /** * 根据模板图片抠图 * * @param oriImage * @param templateImage * @return */ private static BufferedImage DealCutPictureByTemplate(BufferedImage oriImage, BufferedImage templateImage, BufferedImage targetImage) throws Exception { // 源文件图像矩阵 int[][] oriImageData = getData(oriImage); // 模板图像矩阵 int[][] templateImageData = getData(templateImage); // 模板图像宽度 for (int i = 0; i < templateImageData.length; i++) { // 模板图片高度 for (int j = 0; j < templateImageData[0].length; j++) { // 如果模板图像当前像素点不是白色 copy源文件信息到目标图片中 int rgb = templateImageData[i][j]; if (rgb != 16777215 && rgb <= 0) { targetImage.setRGB(i, j, oriImageData[i][j]); } } } return targetImage; } /** * 获取目标区域 * * @param x 随机切图坐标x轴位置 * @param y 随机切图坐标y轴位置 * @param targetWidth 切图后目标宽度 * @param targetHeight 切图后目标高度 * @param ois 源文件输入流 * @return * @throws Exception */ private static BufferedImage getTargetArea(int x, int y, int targetWidth, int targetHeight, InputStream ois, String filetype) throws Exception { Iterator<ImageReader> imageReaderList = ImageIO.getImageReadersByFormatName(filetype); ImageReader imageReader = imageReaderList.next(); // 获取图片流 ImageInputStream iis = ImageIO.createImageInputStream(ois); // 输入源中的图像将只按顺序读取 imageReader.setInput(iis, true); ImageReadParam param = imageReader.getDefaultReadP