Question

我最近用GeoTools开始了我的第一个程序，其中我也在使用JAI-Java Advanced Imaging。我发现以下错误

线程“main”中的异常java.lang.NoClassDefFoundError：it / geosolutions / jaiext / range / Range at it.geosolutions.jaiext.crop.CropDescriptor。（CropDescriptor.java:62） at it.geosolutions.jaiext.crop.CropSpi.updateRegistry（CropSpi.java:56）在javax.media.jai.OperationRegistry.registerServices（OperationRegistry.java:2056）在javax.media.jai.ThreadSafeOperationRegistry.registerServices（ThreadSafeOperationRegistry.java:620）在javax.media.jai.OperationRegistry.initializeRegistry（OperationRegistry.java:373）在javax.media.jai.JAI。（JAI.java:566）在com.rgb.NDRI.createNDI（NDRI.java:17）在com.rgb.RGBSpliter.main（RGBSpliter.java:71）引起：java.lang.ClassNotFoundException：it.geosolutions.jaiext.range.Range 在java.net.URLClassLoader $ 1.run（URLClassLoader.java:366）在java.net.URLClassLoader $ 1.run（URLClassLoader.java:355） at java.security.AccessController.doPrivileged（Native Method）在java.net.URLClassLoader.findClass（URLClassLoader.java:354） at java.lang.ClassLoader.loadClass（ClassLoader.java:425） at sun.misc.Launcher $ AppClassLoader.loadClass（Launcher.java:308） at java.lang.ClassLoader.loadClass（ClassLoader.java:358） ......还有8个

以上是我在控制台中看到的内容。我不知道geotools中的所有罐子14.4哪个罐子丢失了。

代码如下

 package com.rgb;
 import java.awt.image.DataBuffer;
 import java.awt.image.RenderedImage;
 import java.awt.image.renderable.ParameterBlock;
 import java.io.File;
 import java.io.IOException;

 import javax.imageio.ImageIO;
 import javax.media.jai.*;

 public class NDRI {
 public void createNDI(String file1,String file2) throws IOException{
     // First we open the input images. We assume that each band is in a separate file.
     // We assume that the first image is a near infrared one and that the second is
     // a visible red image -- if you're using Landsat images, those will be bands
     // 4 and 3, respectively.
     PlanarImage iNIR = JAI.create("fileload",file1);
     PlanarImage iVIS = JAI.create("fileload",file2);
     // The pixels on those images must be processed as floating-point values!
     ParameterBlock pbConvert = new ParameterBlock();
     pbConvert.addSource(iNIR);
     pbConvert.add(DataBuffer.TYPE_DOUBLE);
     PlanarImage NIR = JAI.create("format", pbConvert);
     pbConvert = new ParameterBlock();
     pbConvert.addSource(iVIS);
     pbConvert.add(DataBuffer.TYPE_DOUBLE);
     PlanarImage VIS = JAI.create("format", pbConvert);    
     // Calculate the denominator (NIR-VIS).
     ParameterBlock pbd = new ParameterBlock();
     pbd.addSource(NIR);
     pbd.addSource(VIS);
     PlanarImage denominator = JAI.create("subtract",pbd);
     // Calculate the numerator (NIR+VIS).
     ParameterBlock pbn = new ParameterBlock();
     pbn.addSource(NIR);
     pbn.addSource(VIS);
     PlanarImage numerator = JAI.create("add",pbd);
     // Calculate the NDVI.
     ParameterBlock pbNDVI = new ParameterBlock();
     pbNDVI.addSource(denominator);
     pbNDVI.addSource(numerator);
     RenderedImage ndvi = JAI.create("divide",pbNDVI);
     String format="png";
     ImageIO.write(ndvi, format, new File("E:/ndvi_output.png"));

     // Create a GUI to show it. 
    /* JFrame frame = new JFrame("NDVI image");
     DisplayNBImage disp = new DisplayNBImage(ndvi);
     frame.add(new JScrollPane(disp));
     frame.pack();
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     frame.setVisible(true);*/

     /*  PlanarImage iNIR = JAI.create("fileload","E:/output/image_red.png");
     PlanarImage iVIS = JAI.create("fileload","E:/output/image_green.png");
     // The pixels on those images must be processed as floating-point values!
     ParameterBlock pbConvert = new ParameterBlock();
     pbConvert.addSource(iNIR);
     pbConvert.add(DataBuffer.TYPE_DOUBLE);
     PlanarImage NIR = JAI.create("format", pbConvert);
     pbConvert = new ParameterBlock();
     pbConvert.addSource(iVIS);
     pbConvert.add(DataBuffer.TYPE_DOUBLE);
     PlanarImage VIS = JAI.create("format", pbConvert);    
     // Calculate the denominator (NIR-VIS).
     ParameterBlock pbd = new ParameterBlock();
     pbd.addSource(NIR);
     pbd.addSource(VIS);
     PlanarImage denominator = JAI.create("subtract",pbd);
     // Calculate the numerator (NIR+VIS).
     ParameterBlock pbn = new ParameterBlock();
     pbn.addSource(NIR);
     pbn.addSource(VIS);
     PlanarImage numerator = JAI.create("add",pbd);
     // Calculate the NDVI.
     ParameterBlock pbNDVI = new ParameterBlock();
     pbNDVI.addSource(denominator);
     pbNDVI.addSource(numerator);
     PlanarImage ndvi = JAI.create("divide",pbNDVI);
     double[][] matrix1 = {{ 1./3, 1./3, 1./3, 0 }};
     ParameterBlock pb = new ParameterBlock();
      pb.addSource(ndvi);
      pb.add(matrix1);*/

     /* PlanarImage dst = (PlanarImage) JAI.create("bandCombine",pb);



      BufferedImage img = dst.getAsBufferedImage();
     ImageIO.write(img, format, new File("E:/output/ndvi_output.png"));
     System.out.println("ndvi gray scale image created");*/
}
}

Answer 1

我在这里找到了缺少的Range类： https://github.com/geosolutions-it/jai-ext/tree/master/jt-utilities/src/main/java/it/geosolutions/jaiext/range

因此，尝试将jt-utilities和jt-iterators添加到项目中。

java.lang.ClassNotFoundException：it.geosolutions.jaiext.range.Range

1 个答案: