JAVA获取Linux服务器信息

其他 2019-04-03 11:31:25 阅读次数: 0
版权声明：巴啦啦小魔仙乌卡拉卡，变身---------------------------------------xiner https://blog.csdn.net/zhengsaisai/article/details/82458533

第一种–获取简单的基本信息，直接读取linux系统中的文件获取。

package hotelPro;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
public  final  class LinuxSystemTool  
{  
/**  
* get memory by used info  
*  
* @return int[] result  
* result.length==4;int[0]=MemTotal;int[1]=MemFree;int[2]=SwapTotal;int[3]=SwapFree;  
* @throws IOException  
* @throws InterruptedException  
*/ 
public  static  int [] getMemInfo() throws IOException, InterruptedException  
{  
File file = new File( "/proc/meminfo" );  
BufferedReader br = new BufferedReader( new InputStreamReader(  
new FileInputStream(file)));  
int [] result = new  int [ 4 ];  
String str = null ;  
StringTokenizer token = null ;  
while ((str = br.readLine()) != null )  
{  
token = new StringTokenizer(str);  
if (!token.hasMoreTokens())  
continue ;  

str = token.nextToken();  
if (!token.hasMoreTokens())  
continue ;  

if (str.equalsIgnoreCase( "MemTotal:" ))  
result[0 ] = Integer.parseInt(token.nextToken());  
else  if (str.equalsIgnoreCase( "MemFree:" ))  
result[1 ] = Integer.parseInt(token.nextToken());  
else  if (str.equalsIgnoreCase( "SwapTotal:" ))  
result[2 ] = Integer.parseInt(token.nextToken());  
else  if (str.equalsIgnoreCase( "SwapFree:" ))  
result[3 ] = Integer.parseInt(token.nextToken());  
}  

return result;  
}  

/**  
* get memory by used info  
*  
* @return float efficiency  
* @throws IOException  
* @throws InterruptedException  
*/ 
public  static  float getCpuInfo() throws IOException, InterruptedException  
{  
File file = new File( "/proc/stat" );  
BufferedReader br = new BufferedReader( new InputStreamReader(  
new FileInputStream(file)));  
StringTokenizer token = new StringTokenizer(br.readLine());  
token.nextToken();  
int user1 = Integer.parseInt(token.nextToken());  
int nice1 = Integer.parseInt(token.nextToken());  
int sys1 = Integer.parseInt(token.nextToken());  
int idle1 = Integer.parseInt(token.nextToken());  

Thread.sleep(1000 );  

br = new BufferedReader(  
new InputStreamReader( new FileInputStream(file)));  
token = new StringTokenizer(br.readLine());  
token.nextToken();  
int user2 = Integer.parseInt(token.nextToken());  
int nice2 = Integer.parseInt(token.nextToken());  
int sys2 = Integer.parseInt(token.nextToken());  
int idle2 = Integer.parseInt(token.nextToken());  

return ( float )((user2 + sys2 + nice2) - (user1 + sys1 + nice1)) / ( float )((user2 + nice2 + sys2 + idle2) - (user1 + nice1 + sys1 + idle1));  
}  

public static void main(String[] args) throws IOException, InterruptedException {
    int[] a = LinuxSystemTool.getMemInfo();
    float b = LinuxSystemTool.getCpuInfo();
    for(int i=0;i<a.length;i++) {
        System.out.println(a[i]);
    }
    System.out.println(b);
}
}

这里写图片描述

第二种 理用第三方jar包

package hotelPro;

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;

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;
            }
            if (hwaddr != null) {
                return hwaddr;
            } else {
                return 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[] args) throws SigarException {
        int a = SysInfo.getCpuCount();
        SysInfo sys = new SysInfo();
        String b = sys.getDefaultIpAddress();
        sys.getEthernetInfo();
        //getEthernetInfo
        System.out.println(a);
    }
}

这里需要导入sigar.jar. 另外需要下载libsigar-amd64-linux.so或者libsigar-x86-linux.so放到jdk 的bin目录下。
https://pan.baidu.com/s/1H80Yyj_T9EknR0GEnf3DmA（libsigar-amd64-linux.so下载链接）

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