我到处搜索过，但没有找到解决问题的方法。我已经尝试了所有涉及更改社区名称，某些不同的集合类的解决方案，但仍然无法使该集合适用于SNMP4j。该代码执行正常，可以从iReasoning MIB浏览器访问该代码，但是在执行该设置后将不会更改OID的值。 SNMP类和测试器类如下。
SNMPManager代码：
public class SNMPManager {
Snmp snmp = null;
String address = null;
/**
* Constructor
*
* @param add
*/
public SNMPManager(String add) {
address = add;
}
public static void main(String[] args) throws IOException {
/**
* Port 161 is used for Read and Other operations Port 162 is used for the trap
* generation
*/
SNMPManager client = new SNMPManager("udp:127.0.0.1/161");
client.start();
/**
* OID - .1.3.6.1.2.1.1.1.0 => SysDec OID - .1.3.6.1.2.1.1.5.0 => SysName => MIB
* explorer will be usefull here, as discussed in previous article
*/
String sysDescr = client.getAsString(new OID(".1.3.6.1.2.1.1.1.0"));
System.out.println(sysDescr);
}
/**
* Start the Snmp session. If you forget the listen() method you will not get
* any answers because the communication is asynchronous and the listen() method
* listens for answers.
*
* @throws IOException
*/
public void start() throws IOException {
TransportMapping<?> transport = new DefaultUdpTransportMapping();
snmp = new Snmp(transport);
// Do not forget this line!
transport.listen();
}
/**
* Method which takes a single OID and returns the response from the agent as a
* String.
*
* @param oid
* @return
* @throws IOException
*/
public String getAsString(OID oid) throws IOException {
ResponseEvent event = get(new OID[] { oid });
return event.getResponse().get(0).getVariable().toString();
}
/**
* This method is capable of handling multiple OIDs
*
* @param oids
* @return
* @throws IOException
*/
public ResponseEvent get(OID oids[]) throws IOException {
PDU pdu = new PDU();
for (OID oid : oids) {
pdu.add(new VariableBinding(oid));
}
pdu.setType(PDU.GET);
ResponseEvent event = snmp.send(pdu, getTarget(), null);
if (event != null) {
return event;
}
throw new RuntimeException("GET timed out");
}
public ResponseEvent set(OID oid, String val) throws IOException {
PDU pdu = new PDU();
VariableBinding varBind = new VariableBinding(oid, new OctetString(val));
pdu.add(varBind);
pdu.setType(PDU.SET);
//pdu.setRequestID(new Integer32(1));
Target target = getTarget();
ResponseEvent event = snmp.set(pdu, target);
if (event != null) {
System.out.println("\nResponse:\nGot Snmp Set Response from Agent");
System.out.println("Snmp Set Request = " + event.getRequest().getVariableBindings());
PDU responsePDU = event.getResponse();
System.out.println("\nresponsePDU = " + responsePDU);
if (responsePDU != null) {
int errorStatus = responsePDU.getErrorStatus();
int errorIndex = responsePDU.getErrorIndex();
String errorStatusText = responsePDU.getErrorStatusText();
System.out.println("\nresponsePDU = " + responsePDU);
if (errorStatus == PDU.noError) {
System.out.println("Snmp Set Response = " + responsePDU.getVariableBindings());
} else {
System.out.println("errorStatus = " + responsePDU);
System.out.println("Error: Request Failed");
System.out.println("Error Status = " + errorStatus);
System.out.println("Error Index = " + errorIndex);
System.out.println("Error Status Text = " + errorStatusText);
}
}
return event;
}
throw new RuntimeException("SET timed out");
}
/**
* This method returns a Target, which contains information about where the data
* should be fetched and how.
*
* @return
*/
private Target getTarget() {
Address targetAddress = GenericAddress.parse(address);
CommunityTarget target = new CommunityTarget();
target.setCommunity(new OctetString("public"));
target.setAddress(targetAddress);
target.setRetries(2);
target.setTimeout(1500);
target.setVersion(SnmpConstants.version2c);
return target;
}
}
SNMPAgent代码：
public class SNMPAgent extends BaseAgent {
private String address;
/**
*
* @param address
* @throws IOException
*/
public SNMPAgent(String address) throws IOException {
/**
* Creates a base agent with boot-counter, config file, and a CommandProcessor
* for processing SNMP requests. Parameters: "bootCounterFile" - a file with
* serialized boot-counter information (read/write). If the file does not exist
* it is created on shutdown of the agent. "configFile" - a file with serialized
* configuration information (read/write). If the file does not exist it is
* created on shutdown of the agent. "commandProcessor" - the CommandProcessor
* instance that handles the SNMP requests.
*/
super(new File("conf.agent"), new File("bootCounter.agent"),
new CommandProcessor(new OctetString(MPv3.createLocalEngineID())));
this.address = address;
}
/**
* Adds community to security name mappings needed for SNMPv1 and SNMPv2c.
*/
@Override
protected void addCommunities(SnmpCommunityMIB communityMIB) {
Variable[] com2sec = new Variable[] { new OctetString("public"), new OctetString("cpublic"), // security name
getAgent().getContextEngineID(), // local engine ID
new OctetString("public"), // default context name
new OctetString(), // transport tag
new Integer32(StorageType.nonVolatile), // storage type
new Integer32(RowStatus.active) // row status
};
MOTableRow<?> row = communityMIB.getSnmpCommunityEntry()
.createRow(new OctetString("public2public").toSubIndex(true), com2sec);
communityMIB.getSnmpCommunityEntry().addRow((SnmpCommunityEntryRow) row);
}
/**
* Adds initial notification targets and filters.
*/
@Override
protected void addNotificationTargets(SnmpTargetMIB arg0, SnmpNotificationMIB arg1) {
// TODO Auto-generated method stub
}
/**
* Adds all the necessary initial users to the USM.
*/
@Override
protected void addUsmUser(USM arg0) {
// TODO Auto-generated method stub
}
/**
* Adds initial VACM configuration.
*/
@Override
protected void addViews(VacmMIB vacm) {
vacm.addGroup(SecurityModel.SECURITY_MODEL_SNMPv2c, new OctetString("cpublic"), new OctetString("v1v2group"),
StorageType.nonVolatile);
vacm.addAccess(new OctetString("v1v2group"), new OctetString("public"), SecurityModel.SECURITY_MODEL_ANY,
SecurityLevel.NOAUTH_NOPRIV, MutableVACM.VACM_MATCH_EXACT, new OctetString("fullReadView"),
new OctetString("fullWriteView"), new OctetString("fullNotifyView"), StorageType.nonVolatile);
vacm.addViewTreeFamily(new OctetString("fullReadView"), new OID("1.3"), new OctetString(),
VacmMIB.vacmViewIncluded, StorageType.nonVolatile);
}
/**
* Unregister the basic MIB modules from the agent's MOServer.
*/
@Override
protected void unregisterManagedObjects() {
// TODO Auto-generated method stub
}
/**
* Register additional managed objects at the agent's server.
*/
@Override
protected void registerManagedObjects() {
// TODO Auto-generated method stub
}
@SuppressWarnings("unchecked")
protected void initTransportMappings() throws IOException {
transportMappings = new TransportMapping[1];
Address addr = GenericAddress.parse(address);
TransportMapping<?> tm = TransportMappings.getInstance().createTransportMapping(addr);
transportMappings[0] = tm;
}
/**
* Start method invokes some initialization methods needed to start the agent
*
* @throws IOException
*/
public void start() throws IOException {
init();
// This method reads some old config from a file and causes
// unexpected behavior.
// loadConfig(ImportModes.REPLACE_CREATE);
addShutdownHook();
getServer().addContext(new OctetString("public"));
finishInit();
run();
sendColdStartNotification();
}
/**
* Clients can register the MO they need
*/
public void registerManagedObject(ManagedObject mo) {
try {
server.register(mo, null);
} catch (DuplicateRegistrationException ex) {
throw new RuntimeException(ex);
}
}
public void unregisterManagedObject(MOGroup moGroup) {
moGroup.unregisterMOs(server, getContext(moGroup));
}
}
MOCreator代码：
public class MOCreator {
public static MOScalar<Variable> createReadOnly(OID oid,Object value ){
return new MOScalar<Variable>(oid,
MOAccessImpl.ACCESS_READ_WRITE,
getVariable(value));
}
private static Variable getVariable(Object value) {
if(value instanceof String) {
return new OctetString((String)value);
}
throw new IllegalArgumentException("Unmanaged Type: " + value.getClass());
}
}
测试器类：
public class TestSNMPAgent {
String siteOIDNumber = "1";
String dataOIDNumber = "1";
String sensorOIDNumber = "1";
OID newOIDdata = new OID("1.3.6.1.4.1.1234.5." + siteOIDNumber + ".2." + dataOIDNumber + "." + sensorOIDNumber + ".0");
OID newOIDdata2 = new OID("1.3.6.1.4.1.1234.5.1.2.1.2.0");
OID newOIDdata3 = new OID("1.3.6.1.4.1.1234.5.1.2.1.3.0");
public static void main(String[] args) throws IOException {
TestSNMPAgent client = new TestSNMPAgent("udp:127.0.0.1/161");
client.init();
}
SNMPAgent agent = null;
/**
* This is the client which we have created earlier
*/
SNMPManager client = null;
String address = null;
/**
* Constructor
*
* @param add
*/
public TestSNMPAgent(String add) {
address = add;
}
/**
* Initiates the testing of the SNMP Agent.
* @throws IOException
*/
private void init() throws IOException {
/*agent = new SNMPAgent("172.21.1.103/2001");*/
agent = new SNMPAgent("172.21.1.103/2010");
agent.start();
// Since BaseAgent registers some MIBs by default we need to unregister
// one before we register our own sysDescr. Normally you would
// override that method and register the MIBs that you need
agent.unregisterManagedObject(agent.getSnmpv2MIB());
//agent.registerManagedObject(MOCreator.createReadOnly(sysDescr,"This Description is set By KGrewe"));
agent.registerManagedObject(MOCreator.createReadOnly(newOIDdata, "50"));
agent.registerManagedObject(MOCreator.createReadOnly(newOIDdata2, "NaN"));
agent.registerManagedObject(MOCreator.createReadOnly(newOIDdata3, "3"));
SNMPManager client1 = new SNMPManager("udp:127.21.1.103/2010");
client1.start();
client1.set(newOIDdata, "30");
//System.out.println(newOIDdata);
// Get back Value which is set
//System.out.println(client1.getAsString(newOIDdata));
while(true) {
}
}
}
非常感谢您的帮助。