snmp4j agent　配置

在开发snmp4j agent时候，在配置V3　用户时出现这样的问题．设置DES加密时总是设置不成功．不加DES没有问题．现在付上代码，那位高手指点一下．把SecurityLevel设成AUTH_NOPRIV，能正常访问，设成AUTH_PRIV就出现这样的错误．Encryption support not enabled.snmpgetnext: USM encryption error，但是我的用户名密码这些方式都是正确的．public class SNMPAgent extends BaseAgent
{
    
    private Snmp4jHeartbeatMib heartbeatMIB;
    private AgentppSimulationMib agentppSimulationMIB;
    
    static {
        LogFactory.setLogFactory(new Log4jLogFactory());
    }
    
    private String address;
    
    public SNMPAgent(File bootCounterFile, File configFile) throws IOException {
        super(bootCounterFile, configFile,
              new CommandProcessor(new OctetString(MPv3.createLocalEngineID())));
        agent.setWorkerPool(ThreadPool.create("RequestPool", 4));
    }
    
    protected SNMPAgent(String address)
    {
        super(new File("conf.agent"), new File("bootCounter.agent"), new CommandProcessor(new OctetString(
            MPv3.createLocalEngineID())));
        this.address = address;
    }
    
    /**
     * 设置团体字，此方法只限于V1,V2
     * */
    protected void addCommunities(SnmpCommunityMIB communityMIB)
    {
        Variable[] com2sec = new Variable[] {new OctetString("public"), // community name
            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(row);
    }
    
    /**
     * 注册mibs
     * */
    protected void registerSnmpMIBs() {
        heartbeatMIB = new Snmp4jHeartbeatMib(super.getNotificationOriginator(),
                                              new OctetString(),
                                              super.snmpv2MIB.getSysUpTime());
        agentppSimulationMIB = new AgentppSimulationMib();
        super.registerSnmpMIBs();
   }
    
    /**
     * 设置组安全级别,及过滤方式．
     * 
     */
    protected void addNotificationTargets(SnmpTargetMIB targetMIB, SnmpNotificationMIB notificationMIB)
    {
        targetMIB.addDefaultTDomains();
        
        targetMIB.addTargetParams(new OctetString("v3notify"),
            MessageProcessingModel.MPv3,
            SecurityModel.SECURITY_MODEL_USM,
            new OctetString("v3notify"),
            SecurityLevel.AUTH_NOPRIV,
            StorageType.permanent);
    }
    
    /**
     * 设置安全账户，指定加密方式，指定私有加密协议．此方法只用于V3
     * */
    protected void addUsmUser(USM usm)
    {
        UsmUser user =
            new UsmUser(
                new OctetString("enocsnmpv3"), //账户名
                AuthMD5.ID,                    //加密协议
                new OctetString("enocsnmpv3pw"), //密码
                PrivDES.ID,                      //私有协议类型
                new OctetString("enocsnmpv3pk")      //私有密码
                );
        usm.addUser(user.getSecurityName(), usm.getLocalEngineID(), user);// ghu update
    }
    
    
    /**
     * 此方法先创建安全组，向安全组授权相应的视图，最后定义视图
     * */
    protected void addViews(VacmMIB vacmMIB)
    {
        //把用户加入安全组,并说明用户是V3用户
        vacmMIB.addGroup(SecurityModel.SECURITY_MODEL_USM,
            new OctetString("enocsnmpv3"),
            new OctetString("v3group"),
            StorageType.permanent);
        
        vacmMIB.addAccess(new OctetString("v3group"), new OctetString(),//ghu add public
            SecurityModel.SECURITY_MODEL_USM,
            SecurityLevel.AUTH_NOPRIV,                                    //设置组的安全级别
            MutableVACM.VACM_MATCH_EXACT,
            new OctetString("fullReadView"),
            new OctetString("fullWriteView"),
            new OctetString("fullNotifyView"),
            StorageType.nonVolatile);
        
        vacmMIB.addViewTreeFamily(new OctetString("fullReadView"),
            new OID("1.3"),
            new OctetString(),
            VacmMIB.vacmViewIncluded,
            StorageType.nonVolatile);
        
        vacmMIB.addViewTreeFamily(new OctetString("fullWriteView"), new OID("1.3"),
            new OctetString(), VacmMIB.vacmViewIncluded,
            StorageType.nonVolatile);
        
        vacmMIB.addViewTreeFamily(new OctetString("fullNotifyView"), new OID("1.3"),
            new OctetString(), VacmMIB.vacmViewIncluded,
            StorageType.nonVolatile);
        
    }
    
    
    /**
     * 此方法向服务注册其它托管对象
     * */
    protected void registerManagedObjects()
    {
        try {
          agentppSimulationMIB.registerMOs(server, null);
          heartbeatMIB.registerMOs(server, null);
        }
        catch (DuplicateRegistrationException ex) {
          ex.printStackTrace();
        }
        
    }
    
    protected void unregisterManagedObjects()
    {
        agentppSimulationMIB.unregisterMOs(server, null);
        heartbeatMIB.unregisterMOs(server, null);
    }
    
    protected void initTransportMappings()
        throws IOException
    {
        
        transportMappings = new TransportMapping[1];
        
        Address addr = GenericAddress.parse(address);
        
        TransportMapping tm = TransportMappings.getInstance().createTransportMapping(addr);
        
        transportMappings[0] = tm;
        
    }
    
    public static void main(String[] args) {
        String address;
        if (args.length > 0) {
          address = args[0];
        }
        else {
          address = "0.0.0.0/163";
        }
        BasicConfigurator.configure();
        try {
          SNMPAgent testAgent1 = new SNMPAgent(new File("SNMP4JTestAgentBC.cfg"),
                                               new File("SNMP4JTestAgentConfig.cfg"));
          testAgent1.address = address;
          testAgent1.init();
          testAgent1.loadConfig(ImportModes.REPLACE_CREATE);
          testAgent1.addShutdownHook();
          //testAgent1.getServer().addContext(new OctetString("public"));//多块网卡时指定上下文用于区分。
          testAgent1.finishInit();
          testAgent1.run();
          testAgent1.sendColdStartNotification();
          
          while (true) {
            try {
              Thread.sleep(1000);
            }
            catch (InterruptedException ex1) {
              break;
            }
          }
        }
        catch (IOException ex) {
          ex.printStackTrace();
        }      }
    
}snmp4j agent V3