SNMP实例
1. 获取网络设备信息：
import java.io.IOException;import java.util.Vector;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.GenericAddress;import org.snmp4j.smi.OID;import org.snmp4j.smi.OctetString;import org.snmp4j.smi.VariableBinding;import org.snmp4j.transport.DefaultUdpTransportMapping;public class SnmpUtil { private Snmp snmp = null; private Address targetAddress = null; public void initComm() throws IOException { // 设置Agent方的IP和端口 targetAddress = GenericAddress.parse("udp:127.0.0.1/161"); TransportMapping transport = new DefaultUdpTransportMapping(); snmp = new Snmp(transport); transport.listen(); } public void sendPDU() throws IOException { // 设置 target CommunityTarget target = new CommunityTarget(); target.setCommunity(new OctetString("public")); target.setAddress(targetAddress); // 通信不成功时的重试次数 target.setRetries(2); // 超时时间 target.setTimeout(1500); target.setVersion(SnmpConstants.version1); // 创建 PDU PDU pdu = new PDU(); pdu.add(new VariableBinding(new OID(new int[] { 1, 3, 6, 1, 2, 1, 1, 5, 0 }))); // MIB的访问方式 pdu.setType(PDU.GET); // 向Agent发送PDU，并接收Response ResponseEvent respEvnt = snmp.send(pdu, target); // 解析Response if (respEvnt != null && respEvnt.getResponse() != null) { Vector<VariableBinding> recVBs = respEvnt.getResponse() .getVariableBindings(); for (int i = 0; i < recVBs.size(); i++) { VariableBinding recVB = recVBs.elementAt(i); System.out.println(recVB.getOid() + " : " + recVB.getVariable()); } } } public static void main(String[] args) { try { SnmpUtil util = new SnmpUtil(); util.initComm(); util.sendPDU(); } catch (IOException e) { e.printStackTrace(); } }}import java.io.IOException;import java.util.Vector;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.GenericAddress;import org.snmp4j.smi.OID;import org.snmp4j.smi.OctetString;import org.snmp4j.smi.VariableBinding;import org.snmp4j.transport.DefaultUdpTransportMapping;public class SnmpUtil { private Snmp snmp = null; private Address targetAddress = null; public void initComm() throws IOException { // 设置Agent方的IP和端口 targetAddress = GenericAddress.parse("udp:127.0.0.1/161"); TransportMapping transport = new DefaultUdpTransportMapping(); snmp = new Snmp(transport); transport.listen(); } public ResponseEvent sendPDU(PDU pdu) throws IOException { // 设置 target CommunityTarget target = new CommunityTarget(); target.setCommunity(new OctetString("public")); target.setAddress(targetAddress); // 通信不成功时的重试次数 target.setRetries(2); // 超时时间 target.setTimeout(1500); target.setVersion(SnmpConstants.version1); // 向Agent发送PDU，并返回Response return snmp.send(pdu, target); } public void setPDU() throws IOException { // set PDU PDU pdu = new PDU(); pdu.add(new VariableBinding(new OID(new int[] { 1, 3, 6, 1, 2, 1, 1, 5, 0 }), new OctetString("SNMPTEST"))); pdu.setType(PDU.SET); sendPDU(pdu); } public void getPDU() throws IOException { // get PDU PDU pdu = new PDU(); pdu.add(new VariableBinding(new OID(new int[] { 1, 3, 6, 1, 2, 1, 1, 5, 0 }))); pdu.setType(PDU.GET); readResponse(sendPDU(pdu)); } public void readResponse(ResponseEvent respEvnt) { // 解析Response if (respEvnt != null && respEvnt.getResponse() != null) { Vector<VariableBinding> recVBs = respEvnt.getResponse() .getVariableBindings(); for (int i = 0; i < recVBs.size(); i++) { VariableBinding recVB = recVBs.elementAt(i); System.out.println(recVB.getOid() + " : " + recVB.getVariable()); } } } public static void main(String[] args) { try { SnmpUtil util = new SnmpUtil(); util.initComm(); util.setPDU(); util.getPDU(); } catch (IOException e) { e.printStackTrace(); } }}private TransportMapping transport = null; public void initComm() throws IOException { // 设置Agent方的IP和端口 targetAddress = GenericAddress.parse("udp:192.168.1.1/161"); // 设置接收trap的IP和端口 transport = new DefaultUdpTransportMapping(new UdpAddress( "192.168.1.2/162")); snmp = new Snmp(transport); CommandResponder trapRec = new CommandResponder() { public synchronized void processPdu(CommandResponderEvent e) { // 接收trap PDU command = e.getPDU(); if (command != null) { System.out.println(command.toString()); } } }; snmp.addCommandResponder(trapRec); transport.listen(); }public void setTrap() throws IOException { // 构造Trap PDU PDU pdu = new PDU(); pdu.add(new VariableBinding(new OID(".1.3.6.1.2.3377.10.1.1.1.1"), new OctetString("SnmpTrap"))); pdu.setType(PDU.TRAP); sendPDU(pdu); System.out.println("Trap sent successfully."); }public synchronized void listen() { System.out.println("Waiting for traps.."); try { this.wait();//Wait for traps to come in } catch (InterruptedException ex) { System.out.println("Interrupted while waiting for traps: " + ex); System.exit(-1); } } public static void main(String[] args) { try { SnmpUtil util = new SnmpUtil(); util.initComm(); util.listen(); } catch (IOException e) { e.printStackTrace(); } }