public static void main(String[] args) {// Load the native library.System.loadLibrary(Core.NATIVE_LIBRARY_NAME);String url ="G:\\web\\uploadPicture\\src\\main\\resources\\assets\\4.jpg";new DetectFaceDemo().go(url,"G:\\1.jpg");}

    public void go(String srcFileName,String newPath) {Mat image = null;CascadeClassifier faceDetector = null;String xmlfilePath = DetectFaceDemo.class.getClassLoader().getResource("lbpcascade_frontalface.xml").getPath().substring(1);try {faceDetector = new CascadeClassifier(xmlfilePath);image = Highgui.imread(srcFileName);}catch (Exception e){e.printStackTrace();}// Detect faces in the image.// MatOfRect is a special container class for Rect.MatOfRect faceDetections = new MatOfRect();faceDetector.detectMultiScale(image, faceDetections);System.out.println(String.format("Detected %s faces", faceDetections.toArray().length));// Draw a bounding box around each face.for (Rect rect : faceDetections.toArray()) {Core.rectangle(image, new Point(rect.x, rect.y), new Point(rect.x + rect.width, rect.y + rect.height), new Scalar(0, 255, 0));}//         Save the visualized detection.System.out.println(String.format("Writing %s", newPath));Highgui.imwrite(newPath, image);}

public void run(String imgStr) {BASE64Decoder decoder = new BASE64Decoder();Mat image = null;CascadeClassifier faceDetector = null;String xmlfilePath = DetectFaceDemo.class.getClassLoader().getResource("lbpcascade_frontalface.xml").getPath().substring(1);try {faceDetector = new CascadeClassifier(xmlfilePath);byte[] b = decoder.decodeBuffer(imgStr); //将base64位流解码为二进制文件image = ImageUtils.bytes2Mat(b);      //将二进制文件转化为mat}catch (Exception e){e.printStackTrace();}// Detect faces in the image.// MatOfRect is a special container class for Rect.MatOfRect faceDetections = new MatOfRect();faceDetector.detectMultiScale(image, faceDetections);System.out.println(String.format("Detected %s faces", faceDetections.toArray().length));
}