0

我使用来自 org.snmp4j 的 snmp4j 版本 1.10.1，这是我的陷阱接收器代码，用于从 snmp 陷阱捕获数据。

public class TrapReceiver extends Thread implements CommandResponder {

//@Autowired
private CarService carService;
List<PDUv1> listPdu = new ArrayList<PDUv1>();
List<PDUv1> temp = new ArrayList<PDUv1>();  
String message = "";
int totReceivedTrap = 0;

public TrapReceiver(CarService carService){
    this.carService = carService;
}

public synchronized void processPdu(CommandResponderEvent cmdRespEvent) {
    PDUv1 pdu = (PDUv1) cmdRespEvent.getPDU();
    if (pdu != null) {
        System.out.println(pdu.getVariableBindings().toString());           
    }
    totReceivedTrap++;
    System.out.println("total received trap "+totReceivedTrap);
}

public void run() {
    while (true) {
        try { 
            this.listen(new UdpAddress("192.168.1.5/162")); //alamat PDU akan listen
        } catch (Exception e) {
            e.printStackTrace();
        } 
    }
}

public synchronized void listen(TransportIpAddress address) throws IOException {
    AbstractTransportMapping transport;
    if (address instanceof TcpAddress) {
        transport = new DefaultTcpTransportMapping((TcpAddress) address);
    } else {
        transport = new DefaultUdpTransportMapping((UdpAddress) address);
    }

    ThreadPool threadPool = ThreadPool.create("DispatcherPool", 10);
    MessageDispatcher mDispathcher = new MultiThreadedMessageDispatcher(
            threadPool, new MessageDispatcherImpl());

    // add message processing models
    mDispathcher.addMessageProcessingModel(new MPv1());
    mDispathcher.addMessageProcessingModel(new MPv2c());

    // add all security protocols
    SecurityProtocols.getInstance().addDefaultProtocols();
    SecurityProtocols.getInstance().addPrivacyProtocol(new Priv3DES());

    // Create Target
    CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString("public"));

    Snmp snmp = new Snmp(mDispathcher, transport);
    snmp.addCommandResponder(this);

    transport.listen();
    message ="Listening on " + address;
    System.out.println(message);

    try {
        this.wait();
    } catch (InterruptedException ex) {
        Thread.currentThread().interrupt();
    }
}

public String getMessage(){
    return this.message;
}   
}

但是缺少一个变量值，这个变量的值是纬度和经度（格式：-903849323.20384;+230349402.03000）。当我使用wireshark捕获数据时，我得到的值也丢失了。

截图 http://www.mediafire.com/view/?kjz1drb9jhda88a http://www.mediafire.com/view/?ov6lqn6u9n669my

为什么数据为空，有什么问题。

4

1 回答 1

1

如果您在wireshark捕获的数据包中没有看到值，那么您在代码中获取空值是完全有效的。你还能期待什么？

这似乎更有可能是设备上运行的 SNMP 代理的问题/功能（例如，未设置地理位置、GPS 信号不可用等）

于 2013-03-05T16:27:00.953 回答