通过Hyperic-hq产品的基础包sigar.jar来实现服务器状态数据的获取。Sigar.jar包是通过本地方法来调用操作系统API来获取系统相关数据。Windows操作系统下Sigar.jar依赖sigar-amd64-winnt.dll或sigar-x86-winnt.dll，linux 操作系统下则依赖libsigar-amd64-linux.so或libsigar-x86-linux.so……而Sigar.jar还依赖于jug-asl-2.0.0.jar、log4j-1.2.14.jar、Junit.jar，
Sigar.jar包的使用方法：
1、 CPU资源信息
a) CPU数量（单位：个）
privatestaticint getCpuCount() throws SigarException {
Sigar sigar = new Sigar();
try {
return sigar.getCpuInfoList().length;
} finally {
sigar.close();
}
}
b) CPU的总量（单位：HZ）及CPU的相关信息
Sigar sigar = getSigar();
CpuInfo infos[] = sigar.getCpuInfoList();
for (int i = 0; i < infos.length; i++) {//不管是单块CPU还是多CPU都适用
CpuInfo info = infos[i];
traceln("mhz=" + info.getMhz());//CPU的总量MHz
traceln("vendor=" + info.getVendor());//获得CPU的卖主，如：Intel
traceln("model=" + info.getModel());//获得CPU的类别，如：Celeron
traceln("cache size=" + info.getCacheSize());//缓冲存储器数量
}
c) CPU的用户使用量、系统使用剩余量、总的剩余量、总的使用占用量等（单位：100%）
publicvoid testCpuPerc() {
Sigar sigar = new Sigar();
// 方式一，主要是针对一块CPU的情况
CpuPerc cpu;
try {
cpu = sigar.getCpuPerc();
printCpuPerc(cpu);
} catch (SigarException e) {
e.printStackTrace();
}
// 方式二，不管是单块CPU还是多CPU都适用
CpuPerc cpuList[] = null;
try {
cpuList = sigar.getCpuPercList();
} catch (SigarException e) {
e.printStackTrace();
return;
}
for (int i = 0; i < cpuList.length; i++) {
printCpuPerc(cpuList[i]);
}
}
privatevoid printCpuPerc(CpuPerc cpu) {
println("User :" + CpuPerc.format(cpu.getUser()));// 用户使用率
println("Sys :" + CpuPerc.format(cpu.getSys()));// 系统使用率
println("Wait :" + CpuPerc.format(cpu.getWait()));// 当前等待率
println("Nice :" + CpuPerc.format(cpu.getNice()));//
println("Idle :" + CpuPerc.format(cpu.getIdle()));// 当前空闲率
println("Total :" + CpuPerc.format(cpu.getCombined()));// 总的使用率
}
d) ……
2、 内存资源信息
a) 物理内存信息
Sigar sigar = new Sigar();
Mem mem = sigar.getMem();
// 内存总量
System.out.println("Total = " + mem.getTotal() / 1024L + "K av");
// 当前内存使用量
System.out.println("Used = " + mem.getUsed() / 1024L + "K used");
// 当前内存剩余量
System.out.println("Free = " + mem.getFree() / 1024L + "K free");
b) 系统页面文件交换区信息
Sigar sigar = new Sigar();
Swap swap = sigar.getSwap();
// 交换区总量
System.out.println("Total = " + swap.getTotal() / 1024L + "K av");
// 当前交换区使用量
System.out.println("Used = " + swap.getUsed() / 1024L + "K used");
// 当前交换区剩余量
System.out.println("Free = " + swap.getFree() / 1024L + "K free");
c) ……
3、 操作系统信息
a) 取到当前操作系统的名称：
private String getPlatformName() {
String hostname = "";
try {
hostname = InetAddress.getLocalHost().getHostName();
} catch (Exception exc) {
Sigar sigar = new Sigar();
try {
hostname = sigar.getNetInfo().getHostName();
} catch (SigarException e) {
hostname = "localhost.unknown";
} finally {
sigar.close();
}
}
return hostname;
}
b) 取当前操作系统的信息
publicvoid testGetOSInfo() {
OperatingSystem OS = OperatingSystem.getInstance();
// 操作系统内核类型如： 386、486、586等x86
System.out.println("OS.getArch() = " + OS.getArch());
System.out.println("OS.getCpuEndian() = " + OS.getCpuEndian());//
System.out.println("OS.getDataModel() = " + OS.getDataModel());//
// 系统描述
System.out.println("OS.getDescription() = " + OS.getDescription());
System.out.println("OS.getMachine() = " + OS.getMachine());//
// 操作系统类型
System.out.println("OS.getName() = " + OS.getName());
System.out.println("OS.getPatchLevel() = " + OS.getPatchLevel());//
// 操作系统的卖主
System.out.println("OS.getVendor() = " + OS.getVendor());
// 卖主名称
System.out.println("OS.getVendorCodeName() = " + OS.getVendorCodeName());
// 操作系统名称
System.out.println("OS.getVendorName() = " + OS.getVendorName());
// 操作系统卖主类型
System.out.println("OS.getVendorVersion() = " + OS.getVendorVersion());
// 操作系统的版本号
System.out.println("OS.getVersion() = " + OS.getVersion());
}
c) 取当前系统进程表中的用户信息
publicvoid testWho() {
try {
Sigar sigar = new Sigar();
Who who[] = sigar.getWhoList();
if (who != null && who.length > 0) {
for (int i = 0; i < who.length; i++) {
Sysout.out.println("/n~~~~~~~~~" + String.valueOf(i) + "~~~~~~~~~");
Who _who = who[i];
Sysout.out.println ("getDevice() = " + _who.getDevice());
Sysout.out.println ("getHost() = " + _who.getHost());
Sysout.out.println ("getTime() = " + _who.getTime());
//当前系统进程表中的用户名
Sysout.out.println ("getUser() = " + _who.getUser());
}
}
} catch (SigarException e) {
e.printStackTrace();
}
}
d) ……
4、 资源信息（主要是硬盘）
a) 取硬盘已有的分区及其详细信息（通过sigar.getFileSystemList()来获得FileSystem列表对象，然后对其进行编历）：
publicvoid testFileSystemInfo() throws Exception {
Sigar sigar = getSigar();
FileSystem fslist[] = sigar.getFileSystemList();
String dir = System.getProperty("user.home");//当前用户文件夹路径
for (int i = 0; i < fslist.length; i++) {
System.out.println("/n~~~~~~~~~~" + i + "~~~~~~~~~~");
FileSystem fs = fslist[i];
// 分区的盘符名称
System.out.println("fs.getDevName() = " + fs.getDevName());
// 分区的盘符名称
System.out.println("fs.getDirName() = " + fs.getDirName());
System.out.println("fs.getFlags() = " + fs.getFlags());//
// 文件系统类型，比如 FAT32、NTFS
System.out.println("fs.getSysTypeName() = " + fs.getSysTypeName());
// 文件系统类型名，比如本地硬盘、光驱、网络文件系统等
System.out.println("fs.getTypeName() = " + fs.getTypeName());
// 文件系统类型
System.out.println("fs.getType() = " + fs.getType());
FileSystemUsage usage = null;
try {
usage = sigar.getFileSystemUsage(fs.getDirName());
} catch (SigarException e) {
if (fs.getType() == 2)
throw e;
continue;
}
switch (fs.getType()) {
case 0: // TYPE_UNKNOWN ：未知
break;
case 1: // TYPE_NONE
break;
case 2: // TYPE_LOCAL_DISK : 本地硬盘
// 文件系统总大小
System.out.println(" Total = " + usage.getTotal() + "KB");
// 文件系统剩余大小
System.out.println(" Free = " + usage.getFree() + "KB");
// 文件系统可用大小
System.out.println(" Avail = " + usage.getAvail() + "KB");
// 文件系统已经使用量
System.out.println(" Used = " + usage.getUsed() + "KB");
double usePercent = usage.getUsePercent() * 100D;
// 文件系统资源的利用率
System.out.println(" Usage = " + usePercent + "%");
break;
case 3:// TYPE_NETWORK ：网络
break;
case 4:// TYPE_RAM_DISK ：闪存
break;
case 5:// TYPE_CDROM ：光驱
break;
case 6:// TYPE_SWAP ：页面交换
break;
}
System.out.println(" DiskReads = " + usage.getDiskReads());
System.out.println(" DiskWrites = " + usage.getDiskWrites());
}
return;
}
b) ……
5、 网络信息
a) 当前机器的正式域名
public String getFQDN(){
try {
return InetAddress.getLocalHost().getCanonicalHostName();
} catch (UnknownHostException e) {
try {
Sigar sigar = new Sigar();
return sigar.getFQDN();
} catch (SigarException ex) {
returnnull;
} finally {
sigar.close();
}
}
}
b) 取到当前机器的IP地址
public String getDefaultIpAddress() {
String address = null;
try {
address = InetAddress.getLocalHost().getHostAddress();
// 没有出现异常而正常当取到的IP时，如果取到的不是网卡循回地址时就返回
// 否则再通过Sigar工具包中的方法来获取
if (!NetFlags.LOOPBACK_ADDRESS.equals(address)) {
return address;
}
} catch (UnknownHostException e) {
//hostname not in DNS or /etc/hosts
}
Sigar sigar = new Sigar();
try {
address = sigar.getNetInterfaceConfig().getAddress();
} catch (SigarException e) {
address = NetFlags.LOOPBACK_ADDRESS;
} finally {
sigar.close();
}
return address;
}
c) 取到当前机器的MAC地址
public String getMAC() {
Sigar sigar = null;
try {
sigar = new Sigar();
String[] ifaces = sigar.getNetInterfaceList();
String hwaddr = null;
for (int i = 0; i < ifaces.length; i++) {
NetInterfaceConfig cfg = sigar.getNetInterfaceConfig(ifaces[i]);
if (NetFlags.LOOPBACK_ADDRESS.equals(cfg.getAddress())
|| (cfg.getFlags() & NetFlags.IFF_LOOPBACK) != 0
|| NetFlags.NULL_HWADDR.equals(cfg.getHwaddr())) {
continue;
}
/*如果存在多张网卡包括虚拟机的网卡，默认只取第一张网卡的MAC地址，如果要返回所有的网卡（包括物理的和虚拟的）则可以修改方法的返回类型为数组或Collection，通过在for循环里取到的多个MAC地址。*/
hwaddr = cfg.getHwaddr();
break;
}
return hwaddr != null ? hwaddr : null;
} catch (Exception e) {
returnnull;
} finally {
if (sigar != null)
sigar.close();
}
}
d) 根据MAC地址来获得一个GUID号
public String getGUID(String mac) {
if (mac == null)
returnnull;
EthernetAddress eAddr = new EthernetAddress(mac);
return UUIDGenerator.getInstance().generateTimeBasedUUID(eAddr)
.toString();
}
e) 获取网络流量等信息
publicvoid testNetIfList() throws Exception {
Sigar sigar = new Sigar();
String ifNames[] = sigar.getNetInterfaceList();
for (int i = 0; i < ifNames.length; i++) {
String name = ifNames[i];
NetInterfaceConfig ifconfig = sigar.getNetInterfaceConfig(name);
print("/nname = " + name);//网络设备名
print("Address = "+ ifconfig.getAddress());//IP地址
print("Netmask = "+ ifconfig.getNetmask());//子网掩码
if ( (ifconfig.getFlags() & 1L) <= 0L) {
print("!IFF_UP...skipping getNetInterfaceStat");
continue;
}
try {
NetInterfaceStat ifstat = sigar.getNetInterfaceStat(name);
print("RxPackets = " + ifstat.getRxPackets());//接收的总包裹数
print("TxPackets = " + ifstat.getTxPackets());//发送的总包裹数
print("RxBytes = " + ifstat.getRxBytes());//接收到的总字节数
print("TxBytes = " + ifstat.getTxBytes());//发送的总字节数
print("RxErrors = " + ifstat.getRxErrors());//接收到的错误包数
print("TxErrors = " + ifstat.getTxErrors());//发送数据包时的错误数
print("RxDropped = " + ifstat.getRxDropped());//接收时丢弃的包数
print("TxDropped = " + ifstat.getTxDropped());//发送时丢弃的包数
} catch (SigarNotImplementedException e) {
} catch (SigarException e) {
print(e.getMessage());
}
}
}
void print(String msg){
System.out.println(msg);
}
f) 一些其他的信息
privatevoid getEthernetInfo(){
Sigar sigar = null;
try {
sigar = new Sigar();
String[] ifaces = sigar.getNetInterfaceList();
for (int i = 0; i < ifaces.length; i++) {
NetInterfaceConfig cfg = sigar.getNetInterfaceConfig(ifaces[i]);
if (NetFlags.LOOPBACK_ADDRESS.equals(cfg.getAddress())
|| (cfg.getFlags() & NetFlags.IFF_LOOPBACK) != 0
|| NetFlags.NULL_HWADDR.equals(cfg.getHwaddr())) {
continue;
}
System.out.println("cfg.getAddress() = " + cfg.getAddress());//IP地址
System.out.println("cfg.getBroadcast() = " + cfg.getBroadcast());//网关广播地址
System.out.println("cfg.getHwaddr() = " + cfg.getHwaddr());//网卡MAC地址
System.out.println("cfg.getNetmask() = " + cfg.getNetmask());//子网掩码
System.out.println("cfg.getDescription() = " + cfg.getDescription());//网卡描述信息
System.out.println("cfg.getType() = " + cfg.getType());//
System.out.println("cfg.getDestination() = " + cfg.getDestination());
System.out.println("cfg.getFlags() = " + cfg.getFlags());//
System.out.println("cfg.getMetric() = " + cfg.getMetric());
System.out.println("cfg.getMtu() = " + cfg.getMtu());
System.out.println("cfg.getName() = " + cfg.getName());
System.out.println();
}
} catch (Exception e) {
System.out.println("Error while creating GUID" + e);
} finally {
if (sigar != null)
sigar.close();
}
}
