import java.net.InetAddress;  
import java.net.UnknownHostException;  
  
import org.hyperic.sigar.CpuInfo;  
import org.hyperic.sigar.CpuPerc;  
import org.hyperic.sigar.FileSystem;  
import org.hyperic.sigar.FileSystemUsage;  
import org.hyperic.sigar.Mem;  
import org.hyperic.sigar.NetFlags;  
import org.hyperic.sigar.NetInterfaceConfig;  
import org.hyperic.sigar.NetInterfaceStat;  
import org.hyperic.sigar.OperatingSystem;  
import org.hyperic.sigar.Sigar;  
import org.hyperic.sigar.SigarException;  
import org.hyperic.sigar.SigarNotImplementedException;  
import org.hyperic.sigar.Swap;  

/**
 *使用sigar.jar、(将sigar-x86-winnt.dll、sigar-x86-winnt.lib放在系统的ClassPath中)
 */ 
public class SysInfo {  
    // 1.CPU资源信息  
    // a)CPU数量（单位：个）  
    public static int 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  
    public void getCpuTotal() {  
        Sigar sigar = new Sigar();  
        CpuInfo[] infos;  
        try {  
            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];  
                System.out.println("mhz=" + info.getMhz());// CPU的总量MHz  
                System.out.println("vendor=" + info.getVendor());// 获得CPU的卖主，如：Intel  
                System.out.println("model=" + info.getModel());// 获得CPU的类别，如：Celeron  
                System.out.println("cache size=" + info.getCacheSize());// 缓冲存储器数量  
            }  
        } catch (SigarException e) {  
            e.printStackTrace();  
        }  
    }  
  
    // 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%）  
    public void 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]);  
        }  
    }  
  
    private void printCpuPerc(CpuPerc cpu) {  
        System.out.println("User :" + CpuPerc.format(cpu.getUser()));// 用户使用率  
        System.out.println("Sys :" + CpuPerc.format(cpu.getSys()));// 系统使用率  
        System.out.println("Wait :" + CpuPerc.format(cpu.getWait()));// 当前等待率  
        System.out.println("Nice :" + CpuPerc.format(cpu.getNice()));//  
        System.out.println("Idle :" + CpuPerc.format(cpu.getIdle()));// 当前空闲率  
        System.out.println("Total :" + CpuPerc.format(cpu.getCombined()));// 总的使用率  
    }  
  
    // 2.内存资源信息  
    public void getPhysicalMemory() {  
        // a)物理内存信息  
        Sigar sigar = new Sigar();  
        Mem mem;  
        try {  
            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  
            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");  
        } catch (SigarException e) {  
            e.printStackTrace();  
        }  
    }  
  
    // 3.操作系统信息  
    // a)取到当前操作系统的名称：  
    public 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  
    public void 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  
    public void testWho() {  
        try {  
            Sigar sigar = new Sigar();  
            org.hyperic.sigar.Who[] who = sigar.getWhoList();  
            if (who != null && who.length > 0) {  
                for (int i = 0; i < who.length; i++) {  
                    System.out.println("\n~~~~~~~~~" + String.valueOf(i) + "~~~~~~~~~");  
                    org.hyperic.sigar.Who _who = who[i];  
                    System.out.println("getDevice() = " + _who.getDevice());  
                    System.out.println("getHost() = " + _who.getHost());  
                    System.out.println("getTime() = " + _who.getTime());  
                    // 当前系统进程表中的用户名  
                    System.out.println("getUser() = " + _who.getUser());  
                }  
            }  
        } catch (SigarException e) {  
            e.printStackTrace();  
        }  
    }  
  
    // 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）：  
    public void testFileSystemInfo() throws Exception {  
        Sigar sigar = new Sigar();  
        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;  
    }  
  
    // 5.网络信息  
    // a)当前机器的正式域名  
    public String getFQDN() {  
        Sigar sigar = null;  
        try {  
            return InetAddress.getLocalHost().getCanonicalHostName();  
        } catch (UnknownHostException e) {  
            try {  
                sigar = new Sigar();  
                return sigar.getFQDN();  
            } catch (SigarException ex) {  
                return null;  
            } 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) {  
            return null;  
        } finally {  
            if (sigar != null)  
                sigar.close();  
        }  
    }  
  
    // d)获取网络流量等信息  
    public void 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);  
    }  
  
    // e)一些其他的信息  
    public void 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();  
        }  
    }  
  
    public static void main(String[] arg) {  
        try {  
            SysInfo s = new SysInfo();  
            s.getCpuTotal();  
            s.getPhysicalMemory();  
            s.testGetOSInfo();  
            s.testWho();  
            s.testFileSystemInfo();  
            s.testNetIfList();  
            s.getEthernetInfo();  
        } catch (Exception e) {  
            // TODO Auto-generated catch block  
            e.printStackTrace();  
        }  
    }  
}