Android实现snmp协议（一）

class SnmpManager {

     private TransportMapping transportMapping = null;
     private Snmp snmp = null;
     private int version;

     public final static int version1 = SnmpConstants. version1;
     public final static int version2c = SnmpConstants.version2c;
     public final static int version3 = SnmpConstants. version3;

     /**
      * 构造方法
      * @param version
      */
     public SnmpManager( int version) {
            this. version = version;
            try {
                 // 设置成Udp协议
                 transportMapping = new DefaultUdpTransportMapping();
                 snmp = new Snmp( transportMapping);

                 if (version == version3) {
                      // 设置安全信息
                     USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(MPv3.createLocalEngineID()), 0);
                     SecurityModels. getInstance().addSecurityModel(usm);
                }
                 transportMapping.listen();
           } catch (Exception e) {
                e.printStackTrace();
                System. out.println(e);
           }
     }

     /**
      * @param sync
      * @param bro
      * @param pdu
      * @param addr
      * 发送消息方法
      */
     public void sendMsg(boolean sync, final boolean bro, PDU pdu, String addr) {
           Address targetAddres = GenericAddress. parse(addr);
           Target target = null;
            if ( this. version == version3) {
                 snmp.getUSM().addUser( new OctetString( "MD5DES"), new UsmUser( new OctetString( "MD5DES"), AuthMD5. ID, new OctetString("MD5DESUserAuthPassword" ), PrivDES.ID, new OctetString("MD5DESUserPrivPassword" )));
                target = new UserTarget();
                 // 设置安全级别
                target.setSecurityLevel(SecurityLevel. AUTH_PRIV);
                target.setSecurityName( new OctetString("MD5DES"));
                target.setVersion(SnmpConstants. version3);
           } else {
                target = new CommunityTarget();
                 if ( this. version == version1) {
                     target.setVersion( version1);
                     ((CommunityTarget) target).setCommunity(new OctetString("public" ));
                } else {
                     target.setVersion( version2c);
                     ((CommunityTarget) target).setCommunity(new OctetString("public" ));
                }
           }

           target.setAddress(targetAddres);
           target.setRetries(2);
           target.setTimeout(1000);

            if (sync) {
                 // 发送报文 并且接受响应
                ResponseEvent response = null;
                 try {
                     response = snmp.send(pdu, target);
                } catch (IOException e) {
                      // TODO Auto-generated catch block
                     e.printStackTrace();
                     System. out.println(e);
                }
                 // 处理响应
                System. out.println( "Synchronize message from " + response.getPeerAddress() + "/nrequest:" + response.getRequest() + "/nresponse:" + response.getResponse());
                
           } else {
                ResponseListener listener = new ResponseListener() {
                      @Override
                      public void onResponse(ResponseEvent event) {
                            if (!bro) {
                                ((Snmp) event.getSource()).cancel(event.getRequest(), this );
                           }
                            // 处理响应
                           PDU request = event.getRequest();
                           PDU response = event.getResponse();
                           System. out.println( "Asynchronise message from " + event.getPeerAddress() + "/nrequest:" + request + "/nresponse:" + response);
                     }
                };
                 try {
                      snmp.send(pdu, target, null, listener);
                } catch (IOException e) {
                     e.printStackTrace();
                     System. out.println(e);
                }
           }
     }
}

public class SnmpTest {

     public static String myVersion = "";
     static boolean sync = false;
     static boolean bro = false;

     /**
      * 主函数
      * @param args
      */
     public static void main(String[] args) {

           SnmpManager manager = new SnmpManager(SnmpConstants.version2c );
            // 构造报文
           PDU pdu = new PDU();
            // PDU pdu = new ScopedPDU(); version3使用
            // 设置要获取的对象ID
           OID oids = new OID( "1.3.6.1.2.1.1.1.0");
//         OID oids = new OID(new int [] { 1, 3, 6, 1, 2, 1, 1, 1, 0 });
           pdu.add( new VariableBinding(oids));
            // 设置报文类型
           pdu.setType(PDU. GET);
//         ((ScopedPDU) pdu).setContextName(new OctetString("priv")); 
            // 发送消息 其中最后一个是想要发送的目标地址
           manager.sendMsg( true, true, pdu, "udp:127.0.0.1/161");
           
     }
}

等我把这段Java代码移植到Android工程中时，却不起作用了。我百度、google、stackoverflow等一些网站都看过了，在stackoverflow上有位朋友也是遇到和我一样的问题，有人回复snmp4j无法在Android上无法使用，究竟为什么，本人也不能解释给大家听，需要更厉害的人了！

因为是华为老师的项目，我不能这样尥蹶子，就继续查找相关资料，我想应该有人做出了类似snmp4j的Android版本吧，功夫不负有心人。

https://www.webnms.com/snmpapi-android/index.html

这个网站的闭源包提供了这个功能，做snmp的开发者，不妨研读一下，我就是在使用了此网站的开发包，完成了snmp的协议。