【发布时间】：2016-03-11 22:05:51
【问题描述】：
我尝试使用 JavaCV 从我的网络摄像头捕获快照。但是当我在代码下方运行时，我遇到了异常。它说找不到类 com/googlecode/javacpp/Pointer。我该怎么做才能解决这个错误......
package camera;
/**
*
* @author asankad
*/
import static com.googlecode.javacv.cpp.opencv_core.cvFlip;
import static com.googlecode.javacv.cpp.opencv_highgui.cvSaveImage;
import com.googlecode.javacv.CanvasFrame;
import com.googlecode.javacv.FrameGrabber;
import com.googlecode.javacv.VideoInputFrameGrabber;
import com.googlecode.javacv.cpp.opencv_core.IplImage;
public class GrabberShow implements Runnable {
//final int INTERVAL=1000;///you may use interval
IplImage image;
CanvasFrame canvas = new CanvasFrame("Web Cam");
public GrabberShow() {
canvas.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);
}
@Override
public void run() {
FrameGrabber grabber = new VideoInputFrameGrabber(0);
int i=0;
try {
grabber.start();
IplImage img;
while (true) {
img = grabber.grab();
if (img != null) {
cvFlip(img, img, 1);// l-r = 90_degrees_steps_anti_clockwise
cvSaveImage((i++)+"-capture.jpg", img);
// show image on window
canvas.showImage(img);
}
//Thread.sleep(INTERVAL);
}
} catch (Exception e) {
}
}
}
例外
Exception in thread "main" java.lang.NoClassDefFoundError: com/googlecode/javacpp/Pointer
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at camera.Camera.main(Camera.java:20)
Caused by: java.lang.ClassNotFoundException: com.googlecode.javacpp.Pointer
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 13 more
Java Result: 1
【问题讨论】：
-
请告诉我们您至少用谷歌搜索了错误消息...
-
是的，我已经这样做了。但我还没有找到答案。
-
请在
camera包中显示您的Camera课程。 -
public class Camera { public static void main(String[] args) { GrabberShow gb = new GrabberShow(); } }
-
您使用的是非常旧的 JavaCPP 版本。请先尝试升级到最新版本。