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public class testMyDll {
private native static int myadd(int a,int b);
static {
System.loadLibrary("javamydll"); //¸Ã¶¯Ì¬¿âÃû³ÆΪÖм䶯̬¿â£¬ÓÉjava³ÌÐòʹÓ㬸ºÔðµ÷ÓÃÐèҪʹÓõĶ¯Ì¬¿â¡£
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println(myadd(4,5));
}
}
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javac testMyDll .java
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javah testMyDll
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//testMyDll.cpp
#include <windows.h>
#include "testMyDll.h"
typedef int (*padd)(int,int);
JNIEXPORT jint JNICALL Java_testMyDll_myadd
(JNIEnv * a, jclass b, jint x, jint y)
{
HINSTANCE hins = ::LoadLibrary("mydll.dll");
if(hins == NULL)
{
return 0;
}
int res;
padd pa = (padd)GetProcAddress(hins,"myadd");
if(pa != NULL)
{
res = x+y;
}
::FreeLibrary(hins);
return res;
}
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long x,y;
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