使用 Spring Boot 实现前后端分离的海康威视 SDK 视频监控系统,可以分为以下几个步骤:
在 Spring Boot 中初始化海康威视 SDK。
@Service
public class HikvisionService {
static {
System.loadLibrary("hcnetsdk"); // 加载海康威视 SDK 动态库
}
public void initSDK() {
if (!HCNetSDK.INSTANCE.NET_DVR_Init()) {
throw new RuntimeException("SDK initialization failed!");
}
System.out.println("SDK initialized successfully.");
}
}
提供 API 接口,用于登录设备。
@RestController
@RequestMapping("/api/device")
public class DeviceController {
@Autowired
private HikvisionService hikvisionService;
@PostMapping("/login")
public ResponseEntity<String> loginDevice(@RequestParam String ip,
@RequestParam int port,
@RequestParam String username,
@RequestParam String password) {
Long lUserID = hikvisionService.loginDevice(ip, port, username, password);
return ResponseEntity.ok("Login successful. User ID: " + lUserID);
}
}
将视频流转换为 RTMP 或 HLS 格式,并推送到流媒体服务器。
@Service
public class VideoStreamService {
public void startStream(Long lUserID, int channel, String rtmpUrl) {
// 调用 SDK 获取视频流
// 使用 FFmpeg 将视频流推送到 RTMP 服务器
String command = String.format("ffmpeg -i rtsp://admin:[email protected]:554 -c copy -f flv %s", rtmpUrl);
try {
Runtime.getRuntime().exec(command);
} catch (IOException e) {
e.printStackTrace();
}
}
}
将视频流地址返回给前端。
@RestController
@RequestMapping("/api/video")
public class VideoController {
@Autowired
private VideoStreamService videoStreamService;
@GetMapping("/start")
public ResponseEntity<String> startVideoStream(@RequestParam Long lUserID,
@RequestParam int channel) {
String rtmpUrl = "rtmp://localhost/live/stream";
videoStreamService.startStream(lUserID, channel, rtmpUrl);
return ResponseEntity.ok("Stream started. RTMP URL: " + rtmpUrl);
}
}
使用 video.js
或 flv.js
播放 RTMP/FLV 视频流。
<video id="videoPlayer" class="video-js vjs-default-skin" controls>
<source src="rtmp://localhost/live/stream" type="rtmp/flv">
video>
<script src="https://cdnjs.cloudflare.com/ajax/libs/video.js/7.10.2/video.min.js">script>
<script>
var player = videojs('videoPlayer');
player.play();
script>
通过 Axios 或 Fetch 调用后端 API。
async function loginDevice(ip, port, username, password) {
const response = await axios.post('/api/device/login', {
ip, port, username, password
});
console.log(response.data);
}
async function startVideoStream(lUserID, channel) {
const response = await axios.get('/api/video/start', {
params: { lUserID, channel }
});
console.log(response.data);
}
使用 Nginx + RTMP 模块搭建流媒体服务器。
安装 Nginx 和 RTMP 模块:
sudo apt-get install libnginx-mod-rtmp
配置 Nginx:
编辑 /etc/nginx/nginx.conf
,添加以下内容:
rtmp {
server {
listen 1935;
application live {
live on;
allow play all;
}
}
}
启动 Nginx:
sudo systemctl restart nginx
后端:
java -jar your-application.jar
前端:
流媒体服务器:
SDK 兼容性:
视频流延迟:
安全性:
性能优化:
通过以上步骤,您可以实现一个基于 Spring Boot 前后端分离的海康威视 SDK 视频监控系统。