SnmpHandler.java
3.89 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
package com.sitech.ismp.util;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
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;
/**
* ClassName:SnmpHandler
* Description: SNMP工具类
*
* @author Linxc
* @version
* @since Ver 1.1
* @Date 2012 Feb 28, 2012 5:19:22 PM
*/
public class SnmpHandler {
private String ipAddr;
private int port;
private String community;
private int version;
private Snmp snmp = null;
private Address targetAddress = null;
private CommunityTarget target = null;
public SnmpHandler(String ipAddr, int port, String community, int version) throws Exception {
this.ipAddr = ipAddr;
this.port = port;
this.community = community;
this.version = version;
init();
}
@SuppressWarnings("unchecked")
public String get(String oid) {
PDU pdu = new PDU();
pdu.add(new VariableBinding(new OID(oid)));
pdu.setType(PDU.GET);
try {
ResponseEvent respEvnt = snmp.send(pdu, target);
if (respEvnt != null && respEvnt.getResponse() != null) {
Vector<VariableBinding> recVBs = respEvnt.getResponse().getVariableBindings();
if (recVBs.size() > 0) {
VariableBinding recVB = recVBs.elementAt(0);
return recVB.getVariable().toString();
}
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
public String getNext(String oid) {
return null;
}
@SuppressWarnings("unchecked")
public List<String> walk(String sOid) {
if(sOid.startsWith(".")){
sOid = sOid.substring(1, sOid.length());
}
List<String> result = new ArrayList<String>();
try {
OID oid = new OID(sOid);
for(int i=0; i<3000; i++) {
PDU pdu = new PDU();
pdu.add(new VariableBinding(oid));
pdu.setType(PDU.GETNEXT);
ResponseEvent respEvnt = snmp.send(pdu, target);
if (respEvnt != null && respEvnt.getResponse() != null) {
Vector<VariableBinding> recVBs = respEvnt.getResponse()
.getVariableBindings();
if (recVBs !=null && recVBs.size() > 0) {
VariableBinding recVB = recVBs.elementAt(0);
oid = recVB.getOid();
String sRecOid = oid.toString();
if(sRecOid.substring(0, sRecOid.lastIndexOf(".")).equals(sOid)){
result.add(recVB.getVariable().toString());
System.out.println(sRecOid + "\t " + recVB.getVariable().toString());
}else{
break;
}
}else{
break;
}
}
}
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
public void init() throws IOException {
targetAddress = GenericAddress.parse("udp:" + ipAddr + "/" + port + "");
;
TransportMapping transport = new DefaultUdpTransportMapping();
snmp = new Snmp(transport);
transport.listen();
target = new CommunityTarget();
target.setCommunity(new OctetString(community));
target.setAddress(targetAddress);
target.setRetries(2);
target.setTimeout(1500);
switch (version) {
case 1:
target.setVersion(SnmpConstants.version1);
break;
case 2:
target.setVersion(SnmpConstants.version2c);
break;
case 3:
// 暂时不支持V3版本
target.setVersion(SnmpConstants.version3);
break;
default:
break;
}
}
public void destroy() {
if (snmp != null) {
try {
snmp.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) throws Exception {
// System.out.println();
// new SnmpHandler("172.21.0.253",161,"public",1).get(".1.3.6.1.4.1.9.2.1.57.0");
new SnmpHandler("172.21.0.253",161,"public",1).walk(".1.3.6.1.4.1.9.9.48.1.1.1.5");
}
}