当我运行我的代码时，它在线程“主” java.lang.NoClassDefFoundError中显示错误异常：org / opencv / core / Core

Question

我正在使用opencv v2.4.13捕获图像并打开图像文件。但是当我运行它时会显示错误：

Exception in thread "main" java.lang.NoClassDefFoundError: org/opencv/core/Core
at com.ismo.First.<clinit>(First.java:33)

这是引发错误的代码：

public class First {

static ImgShow imgShowOrigin = new ImgShow("WELCOME");
static String srcPath = "C:/Users/JAFFAR/Pictures/Testing";

static {
    // Load Opencv native library
    System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
}



public static void main(String[] args) {
    System.out.println("Start app...");
    openImage();
    System.out.println("Done!");
}


public static void openImage() {
    Mat m = Highgui.imread(srcPath + "img1.jpg");
    Size imgSize = m.size();
    Imgproc.resize(m, m, new Size(500, imgSize.height * 500 / imgSize.width), 1.0, 1.0, INTER_CUBIC);
    imgShowOrigin.show(m);
}
}

Answer 1

当您尝试访问不在类路径中的类时，发生NoClassDefFoundError。因此，您需要确保在类路径中有OpenCV库。您可以从OpenCV maven页上获取它。