海康的SDK底层使用C++写的，我不熟悉C++；
海康Java源码示例写的是一个Swing桌面应用，我需要的是嵌入到web项目；
海康《设备网络SDK使用手册》中的示例是用C++写的；并且会出现使用手册和Java源码示例版本不匹配的情况（用手册版本高于Java源码示例版）
统计一个出入口的实时进出客流量；即将摄像头产生的数据 抓取出来保存到业务数据库
SDK版本：6.0.2.35
海康摄像头iDS-2CD681XYZUV-ABD/C；并已经现场安装成功；
海康的SDK，下载地址(win64)：
https://www.hikvision.com/cn/download_more_570.html
；后面用到的全部文档和参考源码全部在SDK文档中
将SDK开发包【库文件】里的HCNetSDK.dll、HCCore.dll、PlayCtrl.dll、SuperRender.dll、AudioRender.dll、HCNetSDKCom文件夹、ssleay32.dll、libeay32.dll文件均要加载到程序里面，【HCNetSDKCom文件夹】（包含里面的功能组件dll库文件）需要和HCNetSDK.dll、HCCore.dll一起加载，放在同一个目录下(我的事springboot项目，放在resources目录下)，且HCNetSDKCom文件夹名不能修改。
将路径：Demo示例\4- Java 开发示例\2-报警布防监听\AlarmJavaDemo\src\alarmjavademo下的HCNetSDK类植入到项目中；
修改HCNetSDK类中的HCNetSDK加载的路径，否则会报无法加载HCNetSDK.dll错误；
HCNetSDK INSTANCE = (HCNetSDK) Native.loadLibrary("HCNetSDK",
HCNetSDK.class);
String path=(HCNetSDK.class.getResource("/").getPath()).replaceAll("%20", " ").substring(1).replace("/", "\\")+"HCNetSDK.dll";
HCNetSDK INSTANCE = (HCNetSDK) Native.loadLibrary(path,
HCNetSDK.class);
写MemberFlowUploadService类，实现数据的抓取(见业务源码1);代码逻辑说明，可参考《设备网络SDK使用手册》-编程导引-客流量功模块的示例说明
写MemberFlowUPloadCallBackImpl类，即回调函数(见业务源码2)；回调函数的实现，我参考书hideSDK中的Demo示例\4- Java 开发示例\2-报警布防监听\AlarmJavaDemo\src\alarmjavademo下的AlarmJavaDemoView类
控制台结果输出
进入回调了
sAlarmType---》lCommand=4355：客流量统计，进入人数：78，离开人数：83, byMode:0, dwRelativeTime:1298991096, dwAbsTime:1298991096
进入回调了
sAlarmType---》lCommand=4355：客流量统计，进入人数：0，离开人数：1, byMode:1, tmStart:20190522163123,tmEnd :20190522163200
进入回调了
sAlarmType---》lCommand=4355：客流量统计，进入人数：79，离开人数：83, byMode:0, dwRelativeTime:1298991115, dwAbsTime:1298991115
源码1：MemberFlowUploadService类
package com.hs.api.service.haikang.meberflow;
import org.springframework.stereotype.Service;
import java.util.Timer;
import java.util.TimerTask;
@Service
public class MemberFlowUploadService{
static HCNetSDK hCNetSDK = HCNetSDK.INSTANCE;
static HCNetSDK.NET_DVR_USER_LOGIN_INFO m_strLoginInfo = new HCNetSDK.NET_DVR_USER_LOGIN_INFO();//设备登录信息
static HCNetSDK.NET_DVR_DEVICEINFO_V40 m_strDeviceInfo = new HCNetSDK.NET_DVR_DEVICEINFO_V40();//设备信息
static String m_sDeviceIP = "192.168.1.X";//已登录设备的IP地址
static String m_sUsername = "XXX";//设备用户名
static String m_sPassword = "XXXXXX";//设备密码
static short m_sPort = 8000;//端口号
public void initMemberFlowUpload(int remainMinuteTime){
// 初始化
hCNetSDK.NET_DVR_Init();
//设置连接时间与重连时间
hCNetSDK.NET_DVR_SetConnectTime(2000, 1);
hCNetSDK.NET_DVR_SetReconnect(10000, true);
// 注册设备-登录参数，包括设备地址、登录用户、密码等
m_strLoginInfo.sDeviceAddress = new byte[HCNetSDK.NET_DVR_DEV_ADDRESS_MAX_LEN];
System.arraycopy(m_sDeviceIP.getBytes(), 0, m_strLoginInfo.sDeviceAddress, 0, m_sDeviceIP.length());
m_strLoginInfo.sUserName = new byte[HCNetSDK.NET_DVR_LOGIN_USERNAME_MAX_LEN];
System.arraycopy(m_sUsername.getBytes(), 0, m_strLoginInfo.sUserName, 0, m_sUsername.length());
m_strLoginInfo.sPassword = new byte[HCNetSDK.NET_DVR_LOGIN_PASSWD_MAX_LEN];
System.arraycopy(m_sPassword.getBytes(), 0, m_strLoginInfo.sPassword, 0, m_sPassword.length());
m_strLoginInfo.wPort = m_sPort;
m_strLoginInfo.bUseAsynLogin = false; //是否异步登录：0- 否，1- 是
m_strLoginInfo.write();
//设备信息, 输出参数
int lUserID = hCNetSDK.NET_DVR_Login_V40(m_strLoginInfo,m_strDeviceInfo);
System.out.println("lUserID.size-->" + lUserID);
if(lUserID< 0){
System.out.println("hCNetSDK.NET_DVR_Login_V30()"+"\n" +hCNetSDK.NET_DVR_GetErrorMsg(null));
hCNetSDK.NET_DVR_Cleanup();
return;
//设置报警回调函数
hCNetSDK.NET_DVR_SetDVRMessageCallBack_V31(new MemberFlowUPloadCallBackImpl(),null );
//启用布防-其他报警布防参数不需要设置，不支持
HCNetSDK.NET_DVR_SETUPALARM_PARAM lpSetupParam = new HCNetSDK.NET_DVR_SETUPALARM_PARAM();
lpSetupParam.dwSize = 0;
int lAlarmHandle = hCNetSDK.NET_DVR_SetupAlarmChan_V41(lUserID,lpSetupParam);
if (lAlarmHandle< 0)
System.out.println("NET_DVR_SetupAlarmChan_V41 error, %d\n"+hCNetSDK.NET_DVR_GetLastError());
hCNetSDK.NET_DVR_Logout(lUserID);
hCNetSDK.NET_DVR_Cleanup();
return;
//等待过程中，如果设备上传报警信息，在报警回调函数里面接收和处理报警信息
Timer timer = new Timer();// 实例化Timer类
timer.schedule(new TimerTask() {
public void run() {
//撤销布防上传通道
if (! hCNetSDK.NET_DVR_CloseAlarmChan_V30(lAlarmHandle))
System.out.println("! hCNetSDK.NET_DVR_CloseAlarmChan_V31(lAlarmHandle)\n"+ hCNetSDK.NET_DVR_GetLastError() +"\n" +hCNetSDK.NET_DVR_GetErrorMsg(null) );
hCNetSDK.NET_DVR_Logout(lUserID);
hCNetSDK. NET_DVR_Cleanup();
return;
//注销用户
hCNetSDK.NET_DVR_Logout(lUserID);
//释放SDK资源
hCNetSDK.NET_DVR_Cleanup();
this.cancel();
System.gc();//主动回收垃圾
}, remainMinuteTime * 60 * 1000 );// 这里毫秒
源码2：MemberFlowUPloadCallBackImpl类
package com.hs.api.service.haikang.meberflow;
import com.hs.dao.entity.saichang.statistics.StatisticsMemberInOut;
import com.hs.dao.service.impl.saichang.statistics.StatisticsMemberInOutService;
import com.sun.jna.Pointer;
import org.springframework.beans.factory.annotation.Autowired;
import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
public class MemberFlowUPloadCallBackImpl implements HCNetSDK.FMSGCallBack_V31 {
@Autowired
private StatisticsMemberInOutService statisticsMemberInOutService;
@Override
public boolean invoke(int lCommand, HCNetSDK.NET_DVR_ALARMER pAlarmer, Pointer pAlarmInfo, int dwBufLen, Pointer pUser) {
System.out.println("进入回调了");
try {
String sAlarmType = new String();
//报警时间
Date today = new Date();
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String[] sIP = new String[2];
sAlarmType = new String("lCommand=") + lCommand;
//lCommand是传的报警类型
HCNetSDK.NET_DVR_PDC_ALRAM_INFO strPDCResult = new HCNetSDK.NET_DVR_PDC_ALRAM_INFO();
strPDCResult.write();
Pointer pPDCInfo = strPDCResult.getPointer();
pPDCInfo.write(0, pAlarmInfo.getByteArray(0, strPDCResult.size()), 0, strPDCResult.size());
strPDCResult.read();
if (strPDCResult.byMode == 0) {
strPDCResult.uStatModeParam.setType(HCNetSDK.NET_DVR_STATFRAME.class);
sAlarmType = sAlarmType + "：客流量统计，进入人数：" + strPDCResult.dwEnterNum + "，离开人数：" + strPDCResult.dwLeaveNum +
", byMode:" + strPDCResult.byMode + ", dwRelativeTime:" + strPDCResult.uStatModeParam.struStatFrame.dwRelativeTime +
", dwAbsTime:" + strPDCResult.uStatModeParam.struStatFrame.dwAbsTime;
if (strPDCResult.byMode == 1) {
strPDCResult.uStatModeParam.setType(HCNetSDK.NET_DVR_STATTIME.class);
//在这里实现数据的保存等业务逻辑，下面注释的代码是SDK提供的参考示例
/* String strtmStart = "" + String.format("%04d", strPDCResult.uStatModeParam.struStatTime.tmStart.dwYear) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmStart.dwMonth) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmStart.dwDay) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmStart.dwHour) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmStart.dwMinute) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmStart.dwSecond);
String strtmEnd = "" + String.format("%04d", strPDCResult.uStatModeParam.struStatTime.tmEnd.dwYear) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmEnd.dwMonth) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmEnd.dwDay) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmEnd.dwHour) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmEnd.dwMinute) +
String.format("%02d", strPDCResult.uStatModeParam.struStatTime.tmEnd.dwSecond);
sAlarmType = sAlarmType + "：客流量统计，进入人数：" + strPDCResult.dwEnterNum + "，离开人数：" + strPDCResult.dwLeaveNum +
", byMode:" + strPDCResult.byMode + ", tmStart:" + strtmStart + ",tmEnd :" + strtmEnd;*/
System.out.println("sAlarmType---》" +sAlarmType);
//报警类型
//报警设备IP地址
sIP = new String(strPDCResult.struDevInfo.struDevIP.sIpV4).split("\0", 2);
return true;
} catch (Exception ex) {
Logger.getLogger(MemberFlowUPloadCallBackImpl.class.getName()).log(Level.SEVERE, null, ex);
return false;
其他问题解决
项目开发没有问题，最后用maven打包项目时，HCNetSDK的加载出了问题，分析错误日志，发现是因为maven打包时进行了test，无法找到HCNetSDK，只要打包时不test就可以了；
windows server 2008 在jdk1.8.0_131下可以加载到HCNetSDK.dll(这里JDK默认在C:\Program Files ); 在更新的JDK版本中就不行(这里JDK默认在C:\Program Files (x86))
