java调用c++动态链接库

1.新建java代码 HelloWorld.java

class HelloWorld {

public native void displayHelloWorld();

static {

System.loadLibrary("hello");

}

public static void main(String[] args) {

new HelloWorld().displayHelloWorld();

}

}

2.javac HelloWorld.java

3.javah -jni HelloWorld 生成c++头文件HelloWorld.h

/* DO NOT EDIT THIS FILE - it is machine generated */

#include <jni.h>

/* Header for class HelloWorld */

#ifndef _Included_HelloWorld

#define _Included_HelloWorld

#ifdef __cplusplus

extern "C" {

#endif

/*

 * Class:     HelloWorld

 * Method:    displayHelloWorld

 * Signature: ()V

 */

JNIEXPORT void JNICALL Java_HelloWorld_displayHelloWorld

  (JNIEnv *, jobject);

#ifdef __cplusplus

}

#endif

#endif

4.实现c++头文件 HelloWorld.h的头文件 HelloWorld.cpp

#include "HelloWorld.h"

#include <iostream>

using namespace std;

JNIEXPORT void JNICALL Java_HelloWorld_displayHelloWorld

  (JNIEnv *, jobject){

printf("this is my jni hello,world\n");

cout<<"hello,world!"<<endl;

 }

5.编译生成hello.dll动态库

工具-->选项-->source control-->include files 将jdk-->include下的头文件和win32的头文件包含进去

6.运行java HelloWorld 

参考链接http://www.blogjava.net/shiliqiang/articles/287920.html