java snmp_java-snmp4j之snmp

package com.Snmp4jFirstDemo;

import org.snmp4j.*;

import org.snmp4j.mp.SnmpConstants;

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;

import org.snmp4j.util.DefaultPDUFactory;

import org.snmp4j.util.TableEvent;

import org.snmp4j.util.TableUtils;

import java.io.IOException;

import java.util.List;

public class SnmpDemo2 {

public static void main(String[] args) {

creatSnmp();

}

public static void creatSnmp() {

TransportMapping transport = null;

Snmp snmp = null;

CommunityTarget target = null;

try {

transport = new DefaultUdpTransportMapping();

snmp = new Snmp(transport);//创建snmp

snmp.listen();//监听消息

target = new CommunityTarget();

target.setCommunity(new OctetString("public"));//社区名称

target.setRetries(3);//连接次数

target.setAddress(GenericAddress.parse("udp:172.18.12.96/161"));//监控的主机

target.setTimeout(8000);//

target.setVersion(SnmpConstants.version2c);

String memory = collectMemory(snmp, target);

System.out.println("内存使用率为：" + memory);

String cpu = collectCPU(snmp, target);

System.out.println("CPU利用率为：" + cpu);

} catch (IOException e) {

e.printStackTrace();

} finally {

try {

if (transport != null)

transport.close();

if (snmp != null)

snmp.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

//获取内存相关信息

public static String collectMemory(Snmp snmp, CommunityTarget target) {

String memory = null;

String[] oids = {"1.3.6.1.2.1.25.2.3.1.2", //type 存储单元类型

"1.3.6.1.2.1.25.2.3.1.3", //descr

"1.3.6.1.2.1.25.2.3.1.4", //unit 存储单元大小

"1.3.6.1.2.1.25.2.3.1.5", //size 总存储单元数

"1.3.6.1.2.1.25.2.3.1.6"}; //used 使用存储单元数;

String PHYSICAL_MEMORY_OID = "1.3.6.1.2.1.25.2.1.2";//物理存储

try {

TableUtils tableUtils = new TableUtils(snmp, new DefaultPDUFactory(PDU.GETBULK));

OID[] columns = new OID[oids.length];

for (int i = 0; i < oids.length; i++)

columns[i] = new OID(oids[i]);

List list = tableUtils.getTable(target, columns, null, null);

for (TableEvent event : list) {

VariableBinding[] values = event.getColumns();

if (values == null) continue;

int unit = Integer.parseInt(values[2].getVariable().toString());//unit 存储单元大小

int totalSize = Integer.parseInt(values[3].getVariable().toString());//size 总存储单元数

int usedSize = Integer.parseInt(values[4].getVariable().toString());//used 使用存储单元数

String oid = values[0].getVariable().toString();

if (PHYSICAL_MEMORY_OID.equals(oid)) {

memory = (long) usedSize * 100 / totalSize + "%";

}

}

} catch (Exception e) {

e.printStackTrace();

}

return memory;

}

//获取cpu使用率

public static String collectCPU(Snmp snmp, CommunityTarget target) {

String cpu = null;

String[] oids = {"1.3.6.1.2.1.25.3.3.1.2"};

try {

TableUtils tableUtils = new TableUtils(snmp, new DefaultPDUFactory(PDU.GETBULK));

OID[] columns = new OID[oids.length];

for (int i = 0; i < oids.length; i++)

columns[i] = new OID(oids[i]);

List list = tableUtils.getTable(target, columns, null, null);

int percentage = 0;

for (TableEvent event : list) {

VariableBinding[] values = event.getColumns();

if (values != null)

percentage += Integer.parseInt(values[0].getVariable().toString());

}

cpu = percentage / list.size() + "%";

} catch (Exception e) {

e.printStackTrace();

}

return cpu;

}

}

==============

org.snmp4j

snmp4j

2.6.2