JAVA use SNMP

前製作業
SNMP請到 http://gicl.cs.drexel.edu/people/sevy/snmp/
下載支援SNMP的API
我使用的是Version 1.4.2
以下使用JAVA IDE Eclipse來實驗
將SNMP的source匯入專案
1. 解壓縮剛下載的source_1.4.2.rar
2. 將surce資料夾下的snmp資料夾拖拉到專案例如SNMPTest上
3. Eclipse會自己匯入專案 (注意 : 專案內請不要有同名資料夾例如SNMP資料夾 Eclipse會自己產生)

程式範例:

import snmp.*;
import java.net.*; 

public class SnmpTest {
    public static void main(String[] args) {
         try
            {
                InetAddress hostAddress = InetAddress.getByName("遠端支援SNMP的IP位址");
                String community = "public";
                int version = 0;    // SNMPv1
                SNMPv1CommunicationInterface comInterface = new SNMPv1CommunicationInterface(version, hostAddress, community);
                
                String itemID = "1.3.6.1.2.1.1.1.0";
                System.out.println("Retrieving value corresponding to OID " + itemID);
                
                SNMPVarBindList newVars = comInterface.getMIBEntry(itemID);
                SNMPSequence pair = (SNMPSequence)(newVars.getSNMPObjectAt(0));
                SNMPObject snmpValue = pair.getSNMPObjectAt(1);
                System.out.println("Retrieved value: type " + snmpValue.getClass().getName() + ", value " + snmpValue.toString());
 
                
                itemID = "1.3.6.1.2.1.1.3.0";
                System.out.println("Retrieving value corresponding to OID " + itemID);
                
                newVars = comInterface.getMIBEntry(itemID);
                pair = (SNMPSequence)(newVars.getSNMPObjectAt(0));
                snmpValue = pair.getSNMPObjectAt(1);
                System.out.println("Retrieved value: type " + snmpValue.getClass().getName() + ", value " + snmpValue.toString());

            }
            catch(Exception e)
            {
                System.out.println("Exception during SNMP operation:  " + e + "\n");
            } 

    }

}