Java在这里插入代码片图片分割与合并（自己用到了记录一下）

 /*** @param fileName    图片名称* @param newFileName 分割后的图片名称* @param rows        高* @param cols        宽* @description 分割图片* @author Renjinliang* @date 2020/6/9 15:06*/private static void splitImage(String fileName, String newFileName, Integer rows, Integer cols) throws IOException {String originalImg = "E:\\test\\" + fileName;// 读入大图File file = new File(originalImg);FileInputStream fis = new FileInputStream(file);BufferedImage image = ImageIO.read(fis);int chunks = rows * cols;// 计算每个小图的宽度和高度int chunkWidth = image.getWidth() / cols;int chunkHeight = image.getHeight() / rows;int count = 0;BufferedImage imgs[] = new BufferedImage[chunks];for (int x = 0; x < rows; x++) {for (int y = 0; y < cols; y++) {//设置小图的大小和类型imgs[count] = new BufferedImage(chunkWidth, chunkHeight, image.getType());//写入图像内容Graphics2D gr = imgs[count++].createGraphics();gr.drawImage(image, 0, 0,chunkWidth, chunkHeight,chunkWidth * y, chunkHeight * x,chunkWidth * y + chunkWidth,chunkHeight * x + chunkHeight, null);gr.dispose();}}// 输出小图for (int i = 0; i < imgs.length; i++) {ImageIO.write(imgs[i], "jpg", new File("E:\\test\\" + newFileName + "" + i + ".jpg"));}System.out.println("完成分割！");}