unsigned char __stdcall piccrequest(unsigned char *serial)

unsigned char __stdcall piccreadex(unsigned char ctrlword,unsigned char *serial,unsigned char area,unsigned char keyA1B0,unsigned char *picckey,unsigned char *piccdata0_2)

	/**

	 * @param serial

	 * @return返回卡序列號

	 */

	public native String getCardSerial(char[] serial);



	/**

	 * @return讀取0~2塊數據

	 */

	public native String getCardData(char ctrlWord, char[] serial, char area,

			char key, char[] picckey, char[] piccdata0_2);

typedef    unsigned char  (__stdcall * getCardNum)(unsigned char[]);

typedef    unsigned char  (__stdcall * getDeviceNum)(unsigned char[]);

typedef    unsigned char  (__stdcall * getCardData)(unsigned char,unsigned char[],unsigned char,unsigned char,unsigned char[],unsigned char[]);

HINSTANCE hModule=NULL;

getCardNum gcnum;

getDeviceNum gdnum;

getCardData gdata;/*

读取卡序列号

*/

JNIEXPORT jstring JNICALL Java_com_szzc_jni_JniApi_getCardSerial

(JNIEnv * env, jobject obj, jcharArray js){

	hModule=LoadLibrary("OUR_MIFARE.dll"); 

   gcnum = (getCardNum)GetProcAddress(hModule, "piccrequest");

    //.....

    unsigned char * str = (unsigned char *)env->GetCharArrayElements(js,NULL);

    unsigned char cardNum = gcnum(str);

	printf("the return value of func is %d\n",cardNum); 

	printf("卡列号:\n");

	unsigned char* p = str;

	while(*p!='\0'){

    printf("%x\n",*p);

    p++;

	}

	return (jstring)cardNum;

}



JNIEXPORT jstring JNICALL Java_com_szzc_jni_JniApi_getCardData

(JNIEnv * env, jobject obj, jchar jc, jcharArray ja1, jchar jc2, jchar jc3, jcharArray ja2, jcharArray ja3){

		hModule=LoadLibrary("OUR_MIFARE.dll"); 

		gdata = (getCardData)GetProcAddress(hModule, "piccreadex");

		unsigned char ctrlWord = (unsigned char)jc;

		unsigned char area = (unsigned char)jc2;

		unsigned char key=(unsigned char)jc3;

		unsigned char * serial= (unsigned char *)env->GetCharArrayElements(ja1,NULL);

		unsigned char * picckey= (unsigned char *)env->GetCharArrayElements(ja2,NULL);

		unsigned char * piccdata= (unsigned char *)env->GetCharArrayElements(ja3,NULL);

		unsigned char status = gdata(ctrlWord,serial,area,key,picckey,piccdata);

		printf("%d\n",status);

		cout << jc << endl;

		cout << jc2 <<endl;

		cout<< jc3 <<endl;

		cout << "****" <<endl;

	unsigned char* p = serial;

	while(*p!='\0'){

    printf("%x\n",*p);

    p++;

	} 

		jstring j=(jstring)"test";