[SNMP4J] trap receive

[huang hongxing]

Hello, 

I have one trap receive question. I have seen in the class snmpRequest but I am not able to find problem. here two code examples,in wsad5,the console reports for the two examples are the same :
java.lang.NoClassDefFoundError: java/net/SocketAddress
 at Snmptraptest.<init>(Snmptraptest.java:20)
 at Snmptraptest.main(Snmptraptest.java:58)
Exception in thread "main" 

example 1:
import java.io.IOException;
import org.snmp4j.*;
import org.snmp4j.mp.*;
import org.snmp4j.security.*;
import org.snmp4j.smi.*;
import org.snmp4j.transport.*;
import org.snmp4j.util.*;
import org.snmp4j.event.*;

public class Snmptraptest {

 public Snmptraptest() {
  int numDispatcherThreads = 2;
  try {
   TransportMapping transport =
    new DefaultUdpTransportMapping(new UdpAddress("udp:127.0.0.1/162"));

   CommandResponder trapPrinter = new CommandResponder() {
    public synchronized void processPdu(CommandResponderEvent e) {
     PDU command = e.getPDU();
     if (command != null) {
      System.out.println(command.toString());
     }
    }
   };

   ThreadPool threadPool =
    ThreadPool.create("DispatcherPool", numDispatcherThreads);
   MessageDispatcher mtDispatcher =
    new MultiThreadedMessageDispatcher(
     threadPool,
     new MessageDispatcherImpl());
   mtDispatcher.addMessageProcessingModel(new MPv1());

   Snmp snmp = new Snmp(mtDispatcher, transport);
   snmp.addCommandResponder(trapPrinter);

   transport.listen();

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

  } catch (Exception ex) {
   ex.printStackTrace();
   System.out.println(ex.getMessage());
   System.exit(0);
  }

 }

 public static void main(String[] args) {
  Snmptraptest snmptrap = new Snmptraptest();
 }
}

example 2:

public class Snmptrap implements CommandResponder {

 public Snmptrap() {
 }

 public void init() {
  try {
   TransportMapping transport =
    new DefaultUdpTransportMapping(new UdpAddress("0.0.0.0/162"));
   Snmp snmp = new Snmp(transport);
   snmp.addCommandResponder(this);
   transport.listen();

   System.out.println("Listening on " + "localhost/162");
  } catch (IOException ex) {
   System.err.println(
    "Error while trying to send request: " + ex.getMessage());
   ex.printStackTrace();
  }

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

 /**
  * processPdu
  *
  * @param e CommandResponderEvent
  */
 public synchronized void processPdu(CommandResponderEvent e) {
  PDU command = e.getPDU();
  if (command != null) {
   System.out.println(command.toString());
  }
 }

 public static void main(String[] args) {
  Snmptrap snmptrap = new Snmptrap();
  snmptrap.init();

 }
}

Best regards,
　　　　　　　　huang hongxing
　　　　　　　　huanghongxing at tsinghua.org.cn
　　　　　　　　　　2005-08-24