我正在尝试使用 Jzy3D 库并在 openGl 下绘制一些图表。但是当我尝试编译代码时，我得到以下错误：
Exception in thread "main" java.lang.NoClassDefFoundError: javax/media/opengl/GLCanvas
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.jzy3d.chart.Chart.initializeCanvas(Chart.java:65)
at org.jzy3d.chart.Chart.<init>(Chart.java:56)
at org.jzy3d.chart.Chart.<init>(Chart.java:39)
at mychart.MyChart.<init>(MyChart.java:44)
at mychart.MyChart.main(MyChart.java:58)
Caused by: java.lang.ClassNotFoundException: javax.media.opengl.GLCanvas
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 17 more
我还添加了我编写的代码，以防出现问题：
package mychart;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Frame;
import org.jzy3d.chart.Chart;
import org.jzy3d.colors.Color;
import org.jzy3d.colors.ColorMapper;
import org.jzy3d.colors.colormaps.ColorMapRainbow;
import org.jzy3d.maths.Range;
import org.jzy3d.plot3d.builder.Builder;
import org.jzy3d.plot3d.builder.Mapper;
import org.jzy3d.plot3d.builder.concrete.OrthonormalGrid;
import org.jzy3d.plot3d.primitives.Shape;
import org.jzy3d.plot3d.rendering.legends.colorbars.ColorbarLegend;
public class MyChart {
protected Chart chart;
public MyChart(){
Mapper mapper = new Mapper(){
@Override
public double f(double x, double y) {
// TODO Auto-generated method stub
return 20*x*(1-Math.sin(y));
}
};
Range range = new Range(-100, 100);
int steps = 30;
final Shape surface = (Shape) Builder.buildOrthonormal
(new OrthonormalGrid(range, steps, range, steps), mapper);
surface.setColorMapper(new ColorMapper(new ColorMapRainbow(), surface.getBounds().getZmin(),
surface.getBounds().getZmax(), new Color(1, 1, 1, .5f)));
surface.setFaceDisplayed(true);
surface.setWireframeDisplayed(true);
surface.setWireframeColor(Color.BLACK);
chart = new Chart();
chart.getScene().getGraph().add(surface);
ColorbarLegend cl = new ColorbarLegend(surface, chart.getView().getAxe().getLayout());
cl.setMinimumSize(new Dimension(100, 300));
surface.setLegend(cl);
}
public Chart getChart(){
return chart;
}
public static void main(String[] args){
MyChart myChart = new MyChart();
Frame frame = new Frame();
frame.setSize(1000, 600);
frame.add((Component)myChart.getChart().getCanvas());
frame.setVisible(true);
}
}
我正在使用 Eclipse Indigo IDE、Jogl 2.0 库（当我将它们导入 Eclipse 时，我填写了本机库路径）、Jzy3D 0.8.4 版本。我在 Windows 7 Ultimate 下工作。