jna 返回 Structure 的使用问题

[会上树的狼]

我在使用jna返回的是Structure的时候出了奇怪现象，不出错误信息，好像是崩了。

package Gundll;

import java.io.File;
import java.util.ArrayList;
import java.util.List;

import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.Structure;

public interface detect extends Library {
	String path = detect.class.getResource("").getFile();
	File file = new File(path);
	String filePath = file.getPath();
	detect INSTANCE = (detect) Native.loadLibrary(filePath + File.separator + "detect", detect.class);
	
	public static class PredictResult extends Structure implements Structure.ByReference {
		public static class ByReference extends PredictResult implements Structure.ByReference {
		}

		public static class ByValue extends PredictResult implements Structure.ByValue {
		}

		public int centerX;
		public int centerY;
		public int radius;

		@Override
		protected List getFieldOrder() {
			List a = new ArrayList();
			a.add("centerX");
			a.add("centerY");
			a.add("radius");
			return a;
		}
	}
	
	public static class DtOut extends Structure {
		public static class ByReference extends DtOut implements Structure.ByReference {
		}

		public static class ByValue extends DtOut implements Structure.ByValue {
		}

		public byte[] imageName = new byte[1000];
		int width;//4byte
		int height;//4byte
		int objectSum;//4byte
		public PredictResult.ByValue[] PredictResult = new PredictResult.ByValue[200];

		@Override
		protected List getFieldOrder() {
			List a = new ArrayList();
			a.add(imageName);
			a.add(width);
			a.add(height);
			a.add(objectSum);
			a.add("PredictResult");
			return a;
		}
	}
	
	
	// 初始化
	void GunPredictInit();
	
	// 调用算法
	DtOut GunPredict(String imageFileName);
}

下面是调用类

package Gundll;

import Gundll.detect.DtOut;

public class Test {
	// String path = detect.class.getResource("").getFile();
	// File file = new File(path);
	// String filePath = file.getPath();

	public static void main(String[] args) {
		try {
			// 初始化
			detect.INSTANCE.GunPredictInit();
			detect detect1 = detect.INSTANCE;
			DtOut dtOut = detect1.GunPredict("c:/1.jpg");
			System.out.println("=================================");
			System.out.println("imageName:" + dtOut.imageName);
			// System.out.println("width:" + dtOut.width);
			// System.out.println("height:" + dtOut.height);
			// System.out.println("objectSum:" + dtOut.objectSum);
			// System.out.println("PredictResult:" + dtOut.PredictResult);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

运行后的结果如下图：