ONVIF - beginning of Device discovery

问题:

I am planning to do a java onvif application. I have created a new project and generated sources from devicemgmt.wsdl.Also generated the classes from remote discovery.wsdl. How can I discover a device in a network using theses generated classes? Thanks for any help.

回答1:

devicemgmt.wsdl is not related to discovery process, the ONVIF discovery process is based on http://specs.xmlsoap.org/ws/2005/04/discovery it use SOAP over UDP.

If you are using apache-cxf, this can be achieve using

org.apache.cxf.ws.discovery.WSDiscoveryClient

A simple sample code could be :

import java.util.List;
import javax.xml.ws.EndpointReference;
import org.apache.cxf.ws.discovery.WSDiscoveryClient;

public class Main 
{
    public static void main(String[] args) 
    {
        WSDiscoveryClient client = new WSDiscoveryClient();
        client.setVersion10(); // use WS-discovery 1.0
        client.setDefaultProbeTimeout(1000); // timeout 1s

        System.out.println("Probe:" + client.getAddress());
        List<EndpointReference> references = client.probe();

        System.out.println("Nb answsers:" + references.size());
        for (EndpointReference ref : references)
        {
            System.out.println(ref.toString());
        }
    }
}

回答2:

I had the same problem, CXF is simply to big, please check my approach: JavaWsDiscovery at https://github.com/thhart/javaWsDiscovery.

It uses a simple network probe as suggested by Onvif standards to be able to identify any devices on your local network, following line will return you all available devices:

final Collection urls = DeviceDiscovery.discoverWsDevicesAsUrls("^http$", ".onvif.");