一段snmp代码

import java.io.IOException;import java.util.HashMap;import java.util.List;import java.util.Map;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.snmp4j.CommunityTarget;import org.snmp4j.PDU;import org.snmp4j.Snmp;import org.snmp4j.TransportMapping;import org.snmp4j.event.ResponseEvent;import org.snmp4j.mp.SnmpConstants;import org.snmp4j.smi.Address;import org.snmp4j.smi.Gauge32;import org.snmp4j.smi.GenericAddress;import org.snmp4j.smi.Integer32;import org.snmp4j.smi.Null;import org.snmp4j.smi.OID;import org.snmp4j.smi.OctetString;import org.snmp4j.smi.VariableBinding;import org.snmp4j.transport.DefaultUdpTransportMapping;import org.snmp4j.util.DefaultPDUFactory;import org.snmp4j.util.TableEvent;import org.snmp4j.util.TableListener;import org.snmp4j.util.TableUtils;import com.nufront.euht.util.StringUtil;import com.nufront.euht.web.common.util.MyStringUtil;import com.nufront.euht.web.deviceConfig.dataStruct.SnmpDataStruct;/** * snmp父类 * */public class ParentSnmp {private static Log log = LogFactory.getLog(ParentSnmp.class);public static final int DEFAULT_VERSION = SnmpConstants.version2c;public static final String DEFAULT_PROTOCOL = "udp";public static final int DEFAULT_PORT = 161;public static final long DEFAULT_TIMEOUT = 800L;   // mspublic static final int DEFAULT_RETRY = 2;public static final String COMMUNITY_PUBLIC = "euhtpub";public static final String COMMUNITY_PRIVATE = "euhtpri";private static final String DEFINE_OID ="59418";private static final int  BULK_MAX_ROWS_NUMBER = 20; // BULK每次请求最大的行数private Snmp snmp;/** * 创建对象communityTarget  *  *  targetAddress * @param community * @param version * @param timeOut * @param retry * @return C@paramommunityTarget */public static CommunityTarget createTargetDefault(String ip, String community) {if(StringUtil.isNullOrBlank(ip)){return null ;}Address address = GenericAddress.parse(DEFAULT_PROTOCOL + ":" + ip+ "/" + DEFAULT_PORT);CommunityTarget target = new CommunityTarget();target.setCommunity(new OctetString(community));target.setAddress(address);target.setVersion(DEFAULT_VERSION);target.setTimeout(DEFAULT_TIMEOUT); // millisecondstarget.setRetries(DEFAULT_RETRY);address = null;return target;}public String snmpGetOne(String ip, String community, String oid){if(ip!=null&&community!=null&&oid!=null){//初始化CommunityTargetCommunityTarget target = this.createTargetDefault(ip, community);PDU pdu = null;DefaultUdpTransportMapping transport = null;//初始化snmptry {pdu = new PDU();pdu.add(new VariableBinding(new OID(oid)));    transport = new DefaultUdpTransportMapping();snmp = new Snmp(transport);snmp.listen();pdu.setType(PDU.GET);//发送pduResponseEvent respEvent = snmp.send(pdu, target);log.debug("PeerAddress:" + respEvent.getPeerAddress());//得到响应信息PDU response = respEvent.getResponse();if (response == null) { //离线log.debug("response is null, request time out");} else {//解析数据VariableBinding vb = response.get(0);    String value = vb.getVariable().toString();    vb = null;return value;}respEvent = null;response = null;log.debug("SNMP GET one OID value finished !");} catch (Exception e) {log.error("SNMP Get Exception:" + e);} finally {if (snmp != null) {try {snmp.close();snmp = null;} catch (IOException ex1) {snmp = null;}}try{if(pdu!=null){pdu = null;}if(transport!=null){transport.close();transport = null;}}catch(Exception e){pdu = null;transport = null;e.printStackTrace();}}target = null;}return null;}/** * 创建对象communityTarget *  *  targetAddress * @param community * @param version * @param timeOut * @param retry * @return C@paramommunityTarget */public static CommunityTarget createDefault(String ip, String community) {if(StringUtil.isNullOrBlank(ip)){return null ;}Address address = GenericAddress.parse(DEFAULT_PROTOCOL + ":" + ip+ "/" + DEFAULT_PORT);CommunityTarget target = new CommunityTarget();target.setCommunity(new OctetString(community));target.setAddress(address);target.setVersion(DEFAULT_VERSION);target.setTimeout(DEFAULT_TIMEOUT); // millisecondstarget.setRetries(DEFAULT_RETRY);return target;}/* 获取表格 */public static Map<String,Object> snmpWalk(String ip, String community, String targetOid) {Map<String,Object> resultMap =  new HashMap<String,Object>();CommunityTarget target = createDefault(ip, community);TransportMapping transport = null;PDU pdu = null;Snmp snmp = null;try {transport = new DefaultUdpTransportMapping();snmp = new Snmp(transport);transport.listen();pdu = new PDU();OID targetOID = new OID(targetOid);pdu.add(new VariableBinding(targetOID));boolean finished = false;System.out.println("----> demo start <----");while (!finished) {VariableBinding vb = null;ResponseEvent respEvent = snmp.getNext(pdu, target);PDU response = respEvent.getResponse();if (null == response) {System.out.println("responsePDU == null");finished = true;break;} else {vb = response.get(0);}// check finishfinished = checkWalkFinished(targetOID, pdu, vb);if (!finished) {System.out.println("==== walk each vlaue :");System.out.println(vb.getOid() + " = " + vb.getVariable());resultMap.put(vb.getOid().toString(), vb.getVariable());// Set up the variable binding for the next entry.pdu.setRequestID(new Integer32(0));pdu.set(0, vb);} else {System.out.println("SNMP walk OID has finished.");snmp.close();}respEvent =null;response = null;vb = null;}targetOID =null;System.out.println("----> demo end <----");} catch (Exception e) {e.printStackTrace();System.out.println("SNMP walk Exception: " + e);} finally {target = null;if (snmp != null) {try {snmp.close();} catch (IOException ex1) {snmp = null;}}try{if(pdu!=null){pdu = null;}if(transport!=null){transport.close();transport = null;}}catch(Exception e){pdu = null;transport = null;e.printStackTrace();}}return resultMap;}private static boolean checkWalkFinished(OID targetOID, PDU pdu,VariableBinding vb) {boolean finished = false;if (pdu.getErrorStatus() != 0) {System.out.println("[true] responsePDU.getErrorStatus() != 0 ");System.out.println(pdu.getErrorStatusText());finished = true;} else if (vb.getOid() == null) {System.out.println("[true] vb.getOid() == null");finished = true;} else if (vb.getOid().size() < targetOID.size()) {System.out.println("[true] vb.getOid().size() < targetOID.size()");finished = true;} else if (targetOID.leftMostCompare(targetOID.size(), vb.getOid()) != 0) {System.out.println("[true] targetOID.leftMostCompare() != 0");finished = true;} else if (Null.isExceptionSyntax(vb.getVariable().getSyntax())) {System.out.println("[true] Null.isExceptionSyntax(vb.getVariable().getSyntax())");finished = true;} else if (vb.getOid().compareTo(targetOID) <= 0) {System.out.println("[true] Variable received is not "+ "lexicographic successor of requested " + "one:");System.out.println(vb.toString() + " <= " + targetOID);finished = true;}return finished;}public Map<String,Object> snmpGetAll(String ip, String community, String[] oidArray) {Map<String,Object> map = new HashMap<String,Object>();if(ip!=null&&community!=null&&oidArray!=null){//初始化CommunityTargetCommunityTarget target = this.createTargetDefault(ip, community); PDU pdu = null;DefaultUdpTransportMapping transport = null;//初始化snmptry {pdu = new PDU();for(int i = 0 ; i < oidArray.length ; i++){pdu.add(new VariableBinding(new OID(oidArray[i])));}    transport = new DefaultUdpTransportMapping();snmp = new Snmp(transport);snmp.listen();pdu.setType(PDU.GET);//发送pduResponseEvent respEvent = snmp.send(pdu, target);log.debug("PeerAddress:" + respEvent.getPeerAddress());//得到响应信息PDU response = respEvent.getResponse();if (response == null) { //离线log.debug("response is null, request time out");} else {//解析数据//VariableBinding vb = response.get(0);for(int i = 0 ; i < response.size() ; i ++){VariableBinding vb = response.get(i);String oid = vb.getOid().toString();String value = vb.getVariable().toString();map.put(oid, value);vb = null; }}log.debug("SNMP GET one OID value finished !");respEvent = null;response = null;} catch (Exception e) {log.error("SNMP Get Exception:" + e);} finally {if (snmp != null) {try {snmp.close();} catch (IOException ex1) {snmp = null;}}try{if(pdu!=null){pdu = null;}if(transport!=null){transport.close();transport = null;}}catch(Exception e){pdu = null;transport = null;e.printStackTrace();}}//回收内存target = null;pdu = null;transport = null;}return map;    } /** * 设置信息 * type = 0 为 long * type = 1 为 string * */public static String setPDU(String ip, String community, String oid , Object value,int type)throws IOException {String snmpTipsInfo ="";if(!StringUtil.isNullOrBlank(ip)){CommunityTarget target = createTargetDefault(ip, community);Snmp snmp = null;PDU pdu = new PDU();if(type==0){pdu.add(new VariableBinding(new OID(oid), new Gauge32(Long.parseLong(value+""))));}else if(type==1){pdu.add(new VariableBinding(new OID(oid), new OctetString((String)value)));}pdu.setType(PDU.SET);DefaultUdpTransportMapping transport = new DefaultUdpTransportMapping();snmp = new Snmp(transport);snmp.listen();log.debug("-------> setPDU single <-------");ResponseEvent response =  snmp.send(pdu, target);PDU responsePDU = response.getResponse();if(responsePDU!=null){String errorText = responsePDU.getErrorStatusText();if(errorText.contains("Success")){snmpTipsInfo = "成功";}else{snmpTipsInfo = "ip或者oid出错";}}else{snmpTipsInfo = "网络不通";}snmp.close();}return snmpTipsInfo;}/* 设置信息 */public static void setPDU(String ip, String community, List<SnmpDataStruct> list)throws IOException {if(!StringUtil.isNullOrBlank(ip)){CommunityTarget target = createTargetDefault(ip, community);Snmp snmp = null;PDU pdu = new PDU();if(list!=null){SnmpDataStruct snmpDataStruct = null;for(int i = 0 ; i < list.size() ; i++){ snmpDataStruct = list.get(i);if(snmpDataStruct.getType()==0){if( Integer.parseInt(snmpDataStruct.getValue()+"")!=-1){pdu.add(new VariableBinding(new OID(snmpDataStruct.getOid()), new Gauge32(Long.parseLong(snmpDataStruct.getValue()+""))));}}else if(snmpDataStruct.getType()== 1){if(snmpDataStruct.getValue()!=null&&!"".equals((snmpDataStruct.getValue()+"").replace(" ", "")))pdu.add(new VariableBinding(new OID(snmpDataStruct.getOid()), new OctetString(snmpDataStruct.getValue()+"")));}} }pdu.setType(PDU.SET);DefaultUdpTransportMapping transport = new DefaultUdpTransportMapping();snmp = new Snmp(transport);snmp.listen();log.debug("-------> setPDU list <-------");snmp.send(pdu, target);snmp.close();}}/** * 采用读表Oid,读取所有信息 * @throws IOException  * */public Map<String,String> Snmp4jTableUtils(String ip,String community,String tableOid,Snmp snmp) throws IOException{Map<String,String> map = new HashMap<String,String>();if( MyStringUtil.strIsNullOrBlank(ip) || MyStringUtil.strIsNullOrBlank(community) || MyStringUtil.strIsNullOrBlank(tableOid)  || snmp == null ){return map ;}OID[] columnOIDs = {new OID(tableOid)};CommunityTarget target = createDefaultSnmpTarget(ip,community);TableListener listener;snmp.listen();TableUtils utils = new TableUtils(snmp, new DefaultPDUFactory(PDU.GET));utils.setMaxNumRowsPerPDU(BULK_MAX_ROWS_NUMBER);   // max 20 rows each BULK requestList<TableEvent> events = utils.getTable(target, columnOIDs, null, null);  //rows: allVariableBinding[] vbs = null;String oid = null;String value = null;for( TableEvent e :events ){vbs = e.getColumns();if(vbs!=null){oid = vbs[0].getOid().toString();value = vbs[0].getVariable().toString();if( oid.contains(DEFINE_OID)){map.put(oid, value);}}}return map;}private static CommunityTarget createDefaultSnmpTarget(String ip, String community) {Address address = GenericAddress.parse("udp:" + ip + "/" + SnmpConstants.DEFAULT_COMMAND_RESPONDER_PORT);CommunityTarget target = new CommunityTarget();target.setCommunity(new OctetString(community));target.setAddress(address);target.setVersion( SnmpConstants.version2c  );target.setTimeout(1000); target.setRetries(3);return target;}}