sigar获取系统信息

Sigar 是一个跨平台的系统信息收集库，可以获取系统的 CPU、内存、磁盘、网络等信息。以下是获取系统信息的示例代码：

import org.hyperic.sigar.*;

public class SigarDemo {
    public static void main(String[] args) throws SigarException {
        Sigar sigar = new Sigar();
        System.out.println("CPU信息：");
        CpuInfo[] cpuInfos = sigar.getCpuInfoList();
        for (CpuInfo cpuInfo : cpuInfos) {
            System.out.println("CPU型号：" + cpuInfo.getModel());
            System.out.println("CPU频率：" + cpuInfo.getMhz() + "MHz");
            System.out.println("CPU核数：" + cpuInfo.getTotalCores());
        }
        System.out.println("内存信息：");
        Mem mem = sigar.getMem();
        System.out.println("总内存：" + mem.getTotal() / 1024 / 1024 + "MB");
        System.out.println("已用内存：" + mem.getUsed() / 1024 / 1024 + "MB");
        System.out.println("剩余内存：" + mem.getFree() / 1024 / 1024 + "MB");
        System.out.println("磁盘信息：");
        FileSystem[] fileSystems = sigar.getFileSystemList();
        for (FileSystem fileSystem : fileSystems) {
            System.out.println("盘符：" + fileSystem.getDirName());
            System.out.println("盘符类型：" + fileSystem.getTypeName());
            FileSystemUsage usage = sigar.getFileSystemUsage(fileSystem.getDirName());
            System.out.println("总大小：" + usage.getTotal() / 1024 / 1024 + "MB");
            System.out.println("已用大小：" + usage.getUsed() / 1024 / 1024 + "MB");
            System.out.println("剩余大小：" + usage.getFree() / 1024 / 1024 + "MB");
        }
        System.out.println("网络信息：");
        NetInterfaceConfig[] netConfigs = sigar.getNetInterfaceConfigList();
        for (NetInterfaceConfig netConfig : netConfigs) {
            System.out.println("网络设备名：" + netConfig.getName());
            System.out.println("IP地址：" + netConfig.getAddress());
            System.out.println("子网掩码：" + netConfig.getNetmask());
        }
    }
}

注意：需要引入 sigar.jar 和 sigar-amd64-winnt.dll（或其它平台对应的库文件）。