Java基于Snmp4j库实现SNMP协议的调用方式

# 查看路由表
route print
# 将访问ip地址为10.137.5.86，且掩码为255.255.255.255的流量转发到192.168.31.104中
route add 10.137.5.86 mask 255.255.255.255 192.168.31.104
# 删除路由表
route delete 10.137.5.86 mask 255.255.255.255 192.168.31.104

# 查看路由表
ip route
# 将访问ip地址为192.168.31.224/32的流量转发到10.137.5.1中
ip route add 192.168.31.224/32 via 10.137.5.1
# 删除路由表
ip route del 192.168.31.224/32 via 10.137.5.1

<dependency>
      <groupId>org.snmp4j</groupId>
      <artifactId>snmp4j</artifactId>
      <version>2.8.15</version>
</dependency>

//定义snmp类，存储常量
public class MySnmp {
    //设备描述信息
    public final String Sys_Desc = "1.3.6.1.2.1.1.1";
    //设备开启时间
    public final String Sys_Up_Time = "1.3.6.1.2.1.1.5";
    //设备名称
    public final String Sys_Name = "1.3.6.1.2.1.1.3";
    //网卡接口速率
    public final String If_Speed = "1.3.6.1.2.1.2.2.1.5.126";
    //网卡接口当前时刻进流量
    public final String If_In_Octets = "1.3.6.1.2.1.2.2.1.10.126";
    //网卡接口当前时刻出流量
    public final String If_Out_Octets = "1.3.6.1.2.1.2.2.1.16.126";
}

//用来获取设备信息
public class GetMessage {
    public String getMessageByIpAndOid(String ip,String oid) throws IOException {
        String result = null ;
        // 1. 创建 SNMP 管理器
        CommunityTarget target = new CommunityTarget();
        target.setCommunity(new OctetString("public"));
        target.setAddress(GenericAddress.parse("udp:"+ip+"/161"));
        target.setRetries(2);
        target.setTimeout(1000);

        TransportMapping<UdpAddress> transport = new DefaultUdpTransportMapping();
        Snmp snmp = new Snmp(transport);
        snmp.listen();

        // 2. 创建 OID
        OID oid1 = new OID(oid);

        // 3. 发送 SNMP 请求并处理响应
        PDU pdu = new PDU();
        pdu.add(new VariableBinding(oid1));
        pdu.setType(PDU.GETNEXT);

        ResponseEvent event = snmp.send(pdu, target);
        PDU response = event.getResponse();

        if (response == null) {
            System.out.println("没有得到响应");
        } else {
            result = String.valueOf(response.get(0).getVariable());
        }

        // 4. 关闭 SNMP 管理器
        snmp.close();
        return result;
    }
}

public class Test {
    public static void main(String[] args) throws IOException {
        MySnmp mySnmp = new MySnmp();
        GetMessage getMessage = new GetMessage();
        System.out.println("获取容器信息："+getMessage.getMessageByIpAndOid("10.137.5.86",mySnmp.Sys_Desc));
        System.out.println("获取容器名称："+getMessage.getMessageByIpAndOid("10.137.5.86",mySnmp.Sys_Name));
        System.out.println("获取容器开启时长："+getMessage.getMessageByIpAndOid("10.137.5.86",mySnmp.Sys_Up_Time));
        System.out.println("获取容器eth0网口当前速率："+getMessage.getMessageByIpAndOid("10.137.5.86",mySnmp.If_Speed));
        System.out.println("获取容器eth0网口当前时刻进流量："+getMessage.getMessageByIpAndOid("10.137.5.86", mySnmp.If_In_Octets));
        System.out.println("获取容器eth0网口当前时刻出流量："+getMessage.getMessageByIpAndOid("10.137.5.86", mySnmp.If_Out_Octets));
    }
}

//实现流量监控
public class TrafficMonitoring {
    public void getTrafficMonitoring(int time) throws IOException {
        //获取oid
        MySnmp mySnmp = new MySnmp();
        //输入流
        FileOutputStream fos = null;
        OutputStreamWriter writer = null;
        BufferedWriter bf = null;
        //根据oid获取结果
        GetMessage getMessage = new GetMessage();
        try {
            //表示内容的追加
            fos = new FileOutputStream("src/main/java/org/example/logFile.log",true);
            writer = new OutputStreamWriter(fos);
            bf = new BufferedWriter(writer);
            bf.write("====================切割线==========================\n");
            //格式化当前时间
            SimpleDateFormat formatter= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            for (int i = 0 ; i<time ; i++) {
                Date date = new Date(System.currentTimeMillis());
                //获得当前时间
                String nowTime = formatter.format(date);
                //活得当前流量
                String If_In_Octets = getMessage.getMessageByIpAndOid("10.137.5.86", mySnmp.If_In_Octets);
                String If_Out_Octets = getMessage.getMessageByIpAndOid("10.137.5.86", mySnmp.If_Out_Octets);
                bf.write(nowTime+"-"+"If_In_Octets:"+If_In_Octets+"bytes,If_Out_Octets:"+If_Out_Octets+"bytes\n");
                Thread.sleep(1000);
            }
            bf.flush();
            System.out.println(time+"秒内的流量监控完毕,请查看日志文件");
        } catch (FileNotFoundException e) {
            throw new RuntimeException(e);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        } finally {
            if (fos != null) {
                fos.close();
            }
            if (writer != null) {
                writer.close();
            }
            if (bf != null) {
                bf.close();
            }
        }
    }
}