Sigar获取网卡流量信息

在网络应用中，经常要对网卡的流量进行统计分析。

和网卡相关的统计数据主要有：网卡信息（ip地址、子网掩码、mac地址等）、网卡的吞吐量、流量等等。

当然了使用sigar也可以获得这些数据。

下面通过例子说明：

    package lab.sigar;            import java.util.ArrayList;      import java.util.List;            import org.hyperic.sigar.NetInterfaceConfig;      import org.hyperic.sigar.NetInterfaceStat;      import org.hyperic.sigar.Sigar;      import org.hyperic.sigar.SigarException;            import com.thoughtworks.xstream.XStream;            /**      * 网卡信息、接口数据、流量      *       * 使用Sigar获得网卡信息      *       */      public class NetInterfaceData {                private NetInterfaceConfig config;          private NetInterfaceStat stat;          private long rxbps;          private long txbps;                public NetInterfaceData() {}                public void populate(Sigar sigar, String name)              throws SigarException {                    config = sigar.getNetInterfaceConfig(name);                    try {                                    long start = System.currentTimeMillis();                  NetInterfaceStat statStart = sigar.getNetInterfaceStat(name);                  long rxBytesStart = statStart.getRxBytes();                  long txBytesStart = statStart.getTxBytes();                  Thread.sleep(1000);                  long end = System.currentTimeMillis();                  NetInterfaceStat statEnd = sigar.getNetInterfaceStat(name);                  long rxBytesEnd = statEnd.getRxBytes();                  long txBytesEnd = statEnd.getTxBytes();                                    rxbps = (rxBytesEnd - rxBytesStart)*8/(end-start)*1000;                  txbps = (txBytesEnd - txBytesStart)*8/(end-start)*1000;                  stat = sigar.getNetInterfaceStat(name);              } catch (SigarException e) {                                } catch (Exception e) {                                }          }                public static NetInterfaceData gather(Sigar sigar, String name)              throws SigarException {                        NetInterfaceData data = new NetInterfaceData();              data.populate(sigar, name);              return data;          }                public NetInterfaceConfig getConfig() {              return config;          }                public NetInterfaceStat getStat() {              return stat;          }                                        public long getRxbps() {              return rxbps;          }                public long getTxbps() {              return txbps;          }                public static void main(String[] args) throws Exception {              Sigar sigar = new Sigar();              String[] netIfs = sigar.getNetInterfaceList();              List netIfList = new ArrayList();              for ( String name:netIfs ) {                  NetInterfaceData netIfData1 = NetInterfaceData.gather(sigar, name);                  netIfList.add(netIfData1);              }              XStream xstream = new XStream();              xstream.alias("NetInterfaceDatas", List.class);              xstream.alias("NetInterfaceData", NetInterfaceData.class);              System.out.println(xstream.toXML(netIfList));          }      }  

输出：

<NetInterfaceDatas>  <NetInterfaceData>    <config>      <name>eth0</name>      <hwaddr>00:FF:AE:0F:32:92</hwaddr>      <type>Ethernet</type>      <description>TAP-Win32 Adapter V9 #2 - ????ü??????ò?????</description>      <address>0.0.0.0</address>      <destination>0.0.0.0</destination>      <broadcast>255.255.255.255</broadcast>      <netmask>0.0.0.0</netmask>      <flags>2050</flags>      <mtu>1500</mtu>      <metric>0</metric>    </config>    <stat>      <rxBytes>0</rxBytes>      <rxPackets>0</rxPackets>      <rxErrors>0</rxErrors>      <rxDropped>0</rxDropped>      <rxOverruns>-1</rxOverruns>      <rxFrame>-1</rxFrame>      <txBytes>0</txBytes>      <txPackets>0</txPackets>      <txErrors>0</txErrors>      <txDropped>0</txDropped>      <txOverruns>-1</txOverruns>      <txCollisions>-1</txCollisions>      <txCarrier>-1</txCarrier>      <speed>10000000</speed>    </stat>    <rxbps>0</rxbps>    <txbps>0</txbps>  </NetInterfaceData>  <NetInterfaceData>    <config>      <name>eth1</name>      <hwaddr>00:FF:C8:0A:AE:37</hwaddr>      <type>Ethernet</type>      <description>eetrust VAdapter - ????ü??????ò?????</description>      <address>0.0.0.0</address>      <destination>0.0.0.0</destination>      <broadcast>255.255.255.255</broadcast>      <netmask>0.0.0.0</netmask>      <flags>2050</flags>      <mtu>1500</mtu>      <metric>0</metric>    </config>    <stat>      <rxBytes>0</rxBytes>      <rxPackets>0</rxPackets>      <rxErrors>0</rxErrors>      <rxDropped>0</rxDropped>      <rxOverruns>-1</rxOverruns>      <rxFrame>-1</rxFrame>      <txBytes>0</txBytes>      <txPackets>0</txPackets>      <txErrors>0</txErrors>      <txDropped>0</txDropped>      <txOverruns>-1</txOverruns>      <txCollisions>-1</txCollisions>      <txCarrier>-1</txCarrier>      <speed>10000000</speed>    </stat>    <rxbps>0</rxbps>    <txbps>0</txbps>  </NetInterfaceData>  <NetInterfaceData>    <config>      <name>eth2</name>      <hwaddr>00:22:68:5D:C8:52</hwaddr>      <type>Ethernet</type>      <description>Realtek PCIe GBE Family Controller - ????ü??????ò?????</description>      <address>10.3.43.63</address>      <destination>0.0.0.0</destination>      <broadcast>10.3.43.255</broadcast>      <netmask>255.255.255.0</netmask>      <flags>2115</flags>      <mtu>1500</mtu>      <metric>0</metric>    </config>    <stat>      <rxBytes>177337765</rxBytes>      <rxPackets>295449</rxPackets>      <rxErrors>0</rxErrors>      <rxDropped>0</rxDropped>      <rxOverruns>-1</rxOverruns>      <rxFrame>-1</rxFrame>      <txBytes>27724399</txBytes>      <txPackets>203267</txPackets>      <txErrors>0</txErrors>      <txDropped>0</txDropped>      <txOverruns>-1</txOverruns>      <txCollisions>-1</txCollisions>      <txCarrier>-1</txCarrier>      <speed>100000000</speed>    </stat>    <rxbps>2000</rxbps>    <txbps>2000</txbps>  </NetInterfaceData>  <NetInterfaceData>    <config>      <name>lo0</name>      <hwaddr>00:00:00:00:00:00</hwaddr>      <type>Local Loopback</type>      <description>MS TCP Loopback interface</description>      <address>127.0.0.1</address>      <destination>0.0.0.0</destination>      <broadcast>0.0.0.0</broadcast>      <netmask>255.0.0.0</netmask>      <flags>73</flags>      <mtu>1520</mtu>      <metric>0</metric>    </config>    <stat>      <rxBytes>36535999</rxBytes>      <rxPackets>350095</rxPackets>      <rxErrors>0</rxErrors>      <rxDropped>0</rxDropped>      <rxOverruns>-1</rxOverruns>      <rxFrame>-1</rxFrame>      <txBytes>36535999</txBytes>      <txPackets>350031</txPackets>      <txErrors>0</txErrors>      <txDropped>0</txDropped>      <txOverruns>-1</txOverruns>      <txCollisions>-1</txCollisions>      <txCarrier>-1</txCarrier>      <speed>10000000</speed>    </stat>    <rxbps>1000</rxbps>    <txbps>1000</txbps>  </NetInterfaceData></NetInterfaceDatas>

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