javax.imageio.ImageIOImageIO.write(javax.imageio.ImageIO.read(new File("需要拷贝的图片路径")), "需要拷贝的图片类型", new File("目标路径"));
javax.imageio.ImageIOImageIO.write(javax.imageio.ImageIO.read(new File("需要拷贝的图片路径")), "需要拷贝的图片类型", new File("目标路径"));

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