利用Visual Studio 2010 实现JNI的最简单的例子.

Java中使用JNI调用DLL
1 编写范例文档

/**
 * @Package: 
 * @Title: TestNative.java
 * @Author: zhangzuoqiang
 * @Time: 5:08:48 PM Sep 17, 2011
 * @Version: 
 */

/**
 * @Description:
 * @Author: zhangzuoqiang
 * @Date: Sep 17, 2011
 */
public class TestNative {

	private native int add(int x, int y);

	public static void main(String[] args) {
		TestNative hh = new TestNative();
		int r = hh.add(30, 20);
		System.out.println("result = " + r);
	}

	static {
		System.loadLibrary("NativeDemo");
	}
}

 

#include "TestNative.h"
#include <jni.h>

JNIEXPORT jint JNICALL Java_TestNative_add
	(JNIEnv *ev, jobject obj, jint x, jint y)
{
	return x+y;
} 

 

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class TestNative */

#ifndef _Included_TestNative
#define _Included_TestNative
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     TestNative
 * Method:    add
 * Signature: (II)I
 */
JNIEXPORT jint JNICALL Java_TestNative_add
  (JNIEnv *, jobject, jint, jint);

#ifdef __cplusplus
}
#endif
#endif

 

 

 

 

 

 

 

 

评论

1 楼 csdn_zuoqiang 2011-10-10  

cd到包的上一级目录（我们这里是$ProjectPath\bin）在运行下面的命令就搞定了：

javah -classpath . TestNative

即可生成*.h文件