VC实现java定义的接口的一些方法

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

#ifndef _Included_com_softeem_test_TestNative
#define _Included_com_softeem_test_TestNative
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     com_softeem_test_TestNative
 * Method:    sayHello
 * Signature: (Ljava/lang/String;)V
 */
JNIEXPORT void JNICALL Java_com_softeem_test_TestNative_sayHello
  (JNIEnv *, jobject, jstring);

/*
 * Class:     com_softeem_test_TestNative
 * Method:    getHello
 * Signature: ()Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_softeem_test_TestNative_getHello
  (JNIEnv *, jobject);

#ifdef __cplusplus
}
#endif
#endif

// MYDLL.cpp: implementation of the CMYDLL class.
//
//////////////////////////////////////////////////////////////////////

//#include "MYDLL.h"
#include <iostream>
#include <windows.h>
using namespace std;
#include "com_softeem_test_TestNative.h"

/**
第一个参数是虚拟机的环境指针
第二个参数为待转换的Java字符串定义
第三个参数是本地存储转换后字符串的内存块
第三个参数是内存块的大小
*/
int JStringToChar(JNIEnv *env, jstring str, LPTSTR desc, int desc_len)
{
	int len = 0;
	if(desc==NULL||str==NULL)
		return -1;
	wchar_t *w_buffer = new wchar_t[1024];
	ZeroMemory(w_buffer,1024*sizeof(wchar_t));
	wcscpy(w_buffer,env->GetStringChars(str,0));
	env->ReleaseStringChars(str,w_buffer);
	ZeroMemory(desc,desc_len);
	len = WideCharToMultiByte(CP_ACP,0,w_buffer,1024,desc,desc_len,NULL,NULL);
	if(len>0 && len<desc_len)
		desc[len]=0;
	delete[] w_buffer;
	return strlen(desc);
}

/*
 * Class:     com_softeem_test_TestNative
 * Method:    sayHello
 * Signature: (Ljava/lang/String;)V
 */
JNIEXPORT void JNICALL Java_com_softeem_test_TestNative_sayHello
  (JNIEnv *env, jobject, jstring str)
{
  TCHAR t_name[128];
  JStringToChar(env,str,t_name,sizeof(t_name));
 // ::MessageBox(NULL,"Hello,JNI!","Hello,JNI!",MB_OK);
  Sleep(5000);
  printf("%s",t_name);

}

/*
 * Class:     com_softeem_test_TestNative
 * Method:    getHello
 * Signature: ()Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_softeem_test_TestNative_getHello
  (JNIEnv *env, jobject)
{
	char str[]="Fuck the world";
   return env->NewStringUTF(str);
}

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

#ifndef _Included_com_softeem_interImpl_CInterImpl
#define _Included_com_softeem_interImpl_CInterImpl
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     com_softeem_interImpl_CInterImpl
 * Method:    turnleft
 * Signature: ()Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_softeem_interImpl_CInterImpl_turnleft
  (JNIEnv *, jobject);

/*
 * Class:     com_softeem_interImpl_CInterImpl
 * Method:    turnright
 * Signature: ()Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_softeem_interImpl_CInterImpl_turnright
  (JNIEnv *, jobject);

/*
 * Class:     com_softeem_interImpl_CInterImpl
 * Method:    turnback
 * Signature: ()Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_softeem_interImpl_CInterImpl_turnback
  (JNIEnv *, jobject);

/*
 * Class:     com_softeem_interImpl_CInterImpl
 * Method:    walkahead
 * Signature: (F)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_softeem_interImpl_CInterImpl_walkahead
  (JNIEnv *, jobject, jfloat);

/*
 * Class:     com_softeem_interImpl_CInterImpl
 * Method:    walkbackon
 * Signature: (F)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_softeem_interImpl_CInterImpl_walkbackon
  (JNIEnv *, jobject, jfloat);

/*
 * Class:     com_softeem_interImpl_CInterImpl
 * Method:    stop
 * Signature: ()V
 */
JNIEXPORT void JNICALL Java_com_softeem_interImpl_CInterImpl_stop
  (JNIEnv *, jobject);

/*
 * Class:     com_softeem_interImpl_CInterImpl
 * Method:    play
 * Signature: (Ljava/lang/String;)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_softeem_interImpl_CInterImpl_play
  (JNIEnv *, jobject, jstring);

/*
 * Class:     com_softeem_interImpl_CInterImpl
 * Method:    getsensorstate
 * Signature: (I)Z
 */
JNIEXPORT jboolean JNICALL Java_com_softeem_interImpl_CInterImpl_getsensorstate
  (JNIEnv *, jobject, jint);

/*
 * Class:     com_softeem_interImpl_CInterImpl
 * Method:    getrobotdirect
 * Signature: ()I
 */
JNIEXPORT jint JNICALL Java_com_softeem_interImpl_CInterImpl_getrobotdirect
  (JNIEnv *, jobject);

#ifdef __cplusplus
}
#endif
#endif

JNIEXPORT jstring JNICALL Java_com_softeem_interImpl_CInterImpl_turnleft
  (JNIEnv *env, jobject jobj)
{
   char str[]="Fuck the world";  
    
  printf("%s",str);  

   return env->NewStringUTF(str);  

}

package com.softeem.interImpl;

public class CInterImpl {
	
	
	public native String turnleft(); 
		
	
	static{
		System.loadLibrary("SimpleDll");
	}
	
	public static void main(String[] args) throws Exception {
		CInterImpl aa=new CInterImpl();
		String aaa=aa.turnleft();
		System.out.println(aaa);
	}
	
	
}