JNI方法调用C++类库<一>

布局：

C++ ------------>lib，文件dms_lib.cpp

C++ ------------>JNI C++，文件dms_jni.cpp

JAVA ------------>JNI JAVA，文件dms.java

通过以下命令，可以生成java的jni头文件：javac dms.java && javah dms

/**
* file: dms.java
* {@hide}
*/
public class dms
{
// can't instantiate this class
private dms()
{
}

/**
* start the upnp device.
*/
public static native int startDevice();
/**
* stop the upnp device.
*/
public static native int stopDevice();
}

通过命令javac dms.java && javah dms生成的头文件：

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

#ifndef _Included_dms
#define _Included_dms
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class:     dms
* Method:    startDevice
* Signature: ()I
*/
JNIEXPORT jint JNICALL Java_dms_startDevice
(JNIEnv *, jclass);

/*
* Class:     dms
* Method:    stopDevice
* Signature: ()I
*/
JNIEXPORT jint JNICALL Java_dms_stopDevice
(JNIEnv *, jclass);

#ifdef __cplusplus
}
#endif
#endif

dms_lib.h:

#ifndef DMS_LIB_H
#define DMS_LIB_H
#include "Neptune.h"
#include "Platinum.h"

class dms
{
private dms();

private PLT_UPnP m_upnp;
private PLT_DeviceHostReference m_device;

public void start_dms();
public void stop_dms();
}

#endif //DMS_LIB_H

dms_lib.cpp:

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "Neptune.h"
#include "Platinum.h"
#include "dms_lib.h"

dms:dms
{
/*
char *str = "test";
printf("start...%s",str);
*/
// setup Neptune logging
NPT_LogManager::GetDefault().Configure("plist:.level=INFO;.handlers=ConsoleHandler;.ConsoleHandler.colors=off;.ConsoleHandler.filter=42");

m_device = new PLT_FileMediaServer("/data/local",
"Platinum UPnP Media Server");
NPT_List<NPT_IpAddress> list;
NPT_CHECK_SEVERE(PLT_UPnPMessageHelper::GetIPAddresses(list));
NPT_String ip = list.GetFirstItem()->ToString();

m_device->m_ModelDescription = "Platinum Media Server";
m_device->m_ModelURL = "http://www.plutinosoft.com/";
m_device->m_ModelNumber = "1.0";
m_device->m_ModelName = "Platinum Media Server";
m_device->m_Manufacturer = "Plutinosoft";
m_device->m_ManufacturerURL = "http://www.plutinosoft.com/";

m_upnp.AddDevice(m_device);
}

void dms::start_dms()
{
NPT_CHECK_SEVERE(m_upnp.Start());

}

void dms::stop_dms()
{
/*
char *str = "test";
printf("stop...");
*/

m_upnp.Stop();
}