Question

在C++向JAVA提供调用接口时，需要一个指向java class的指针，怎么实现，JNA库中有方法吗

Answer 1

public interface MyCDll extends Library {
MyCDll INSTANCE = (MyCDll)Native.loadLibrary("MyCDll", MyCDll.class);
public static class CFile extends Structure {
public ByteByReference _ptr = new ByteByReference();
public int _cnt;
public ByteByReference _base = new ByteByReference();
public int _flag;
public int _file;
public int _charbuf;
public int _bufsiz;
public ByteByReference _tmpfname = new ByteByReference();
public static class ByReference extends CFile
implements Structure.ByReference{}
public static class ByValue extends CFile
implements Structure.ByValue{}
}
public CFile.ByReference fopen(byte[] filename,int len1, byte[] model,int len2);
public int fread(byte[] br, int size, int count, CFile f);
public int fclose(CFile br);
}
这是用java模拟的C的File类。java调用需要的写好的dll或so的动态库。动态库中的所有方法都可以用JNA来描述

Answer 2

用jni,我也没用过，我也是在找方法，但是大多数人都说用JNI......