java获取一些硬件配置

MonitorInfoBean.java

package com.mxx.test;

public class MonitorInfoBean {   

    /** 可使用内存. */   

    private long totalMemory;       

    /**  剩余内存. */   

    private long freeMemory;       

    /** 最大可使用内存. */   

    private long maxMemory;     

    /** 操作系统. */   

    private String osName;      

    /** 总的物理内存. */   

    private long totalMemorySize;     

    /** 剩余的物理内存. */   

    private long freePhysicalMemorySize;   

    /** 已使用的物理内存. */   

    private long usedMemory;   

    /** 线程总数. */ 

    private int totalThread;   

    /** cpu使用率. */   

    private double cpuRatio;   

    public long getFreeMemory() {   

        return freeMemory;   

    }   

    public void setFreeMemory(long freeMemory) {   

        this.freeMemory = freeMemory;   

    }   

    public long getFreePhysicalMemorySize() {   

        return freePhysicalMemorySize;   

    }   

    public void setFreePhysicalMemorySize(long freePhysicalMemorySize) {   

        this.freePhysicalMemorySize = freePhysicalMemorySize;

   

    }   

    public long getMaxMemory() {   

        return maxMemory;   

    }   

    public void setMaxMemory(long maxMemory) {   

        this.maxMemory = maxMemory;   

    }   

    public String getOsName() {   

        return osName;   

    }   

    public void setOsName(String osName) {   

        this.osName = osName;   

    }   

    public long getTotalMemory() {   

        return totalMemory;   

    }   

 

IMonitorService.java

 

    public long getUsedMemory() {   

        return usedMemory;   

    }   

    public void setUsedMemory(long usedMemory) {   

        this.usedMemory = usedMemory;   

    }   

    public double getCpuRatio() {   

        return cpuRatio;   

    }   

    public void setCpuRatio(double cpuRatio) {   

        this.cpuRatio = cpuRatio;   

    }   

}   

    public void setTotalMemory(long totalMemory) {   

        this.totalMemory = totalMemory;   

    }   

    public long getTotalMemorySize() {   

        return totalMemorySize;   

    }   

    public void setTotalMemorySize(long totalMemorySize) {   

        this.totalMemorySize = totalMemorySize;   

    }   

    public int getTotalThread() {   

        return totalThread;   

    }   

    public void setTotalThread(int totalThread) {   

        this.totalThread = totalThread;   

    }   

IMonitorService.java

package com.mxx.test;

//之后，建立bean的接口   

public interface IMonitorService {   

    public MonitorInfoBean getMonitorInfoBean() throws Exception;   

}   

MonitorServiceImp.java

package com.mxx.test;    

import java.io.InputStreamReader;   

import java.io.LineNumberReader;   

  

import sun.management.ManagementFactory;   

  

import com.sun.management.OperatingSystemMXBean;   

import java.io.*;   

import java.util.StringTokenizer;   

  

/**  

 

* 获取系统信息的业务逻辑实现类.  

* @author GuoHuang  

*/   

//然后，就是最关键的，得到cpu的利用率，已用内存，可用内存，最大内存等信息。

public class MonitorServiceImp implements IMonitorService {   

    

//cpu时间

    private static final int CPUTIME = 30;   

    //百分比

    private static final int PERCENT = 100;   

    //长度

    private static final int FAULTLENGTH = 10;   

    //Linux版本号

    private static String linuxVersion = null;   

  

    /**  

   * 获得当前的监控对象.  

     * @return 返回构造好的监控对象  

     * @throws Exception  

     * @author GuoHuang  

     */   

    public MonitorInfoBean getMonitorInfoBean() throws Exception {

        int kb = 1024;   

        // 可使用内存   

        long totalMemory = Runtime.getRuntime().totalMemory() / kb;   

        // 剩余内存   

        long freeMemory = Runtime.getRuntime().freeMemory() / kb;   

        // 最大可使用内存   

        long maxMemory = Runtime.getRuntime().maxMemory() / kb;   

  

        OperatingSystemMXBean osmxb = (OperatingSystemMXBean) ManagementFactory   

                .getOperatingSystemMXBean();   

  

        // 操作系统   

        String osName = System.getProperty("os.name");

        // 总的物理内存   

        long totalMemorySize = osmxb.getTotalPhysicalMemorySize() / kb; 

        // 剩余的物理内存   

        long freePhysicalMemorySize = osmxb.getFreePhysicalMemorySize() / kb;   

        // 已使用的物理内存   

        long usedMemory = (osmxb.getTotalPhysicalMemorySize() - osmxb   

                .getFreePhysicalMemorySize())   / kb;   

  

        // 获得线程总数   

        ThreadGroup parentThread;   

        for (parentThread = Thread.currentThread().getThreadGroup(); parentThread  

                .getParent() != null; parentThread = parentThread.getParent()) ;   

        int totalThread = parentThread.activeCount();   

        double cpuRatio = 0;   

        if (osName.toLowerCase().startsWith("windows")) {   

            cpuRatio = this.getCpuRatioForWindows();   

        }   

        else {   

         cpuRatio = this.getCpuRateForLinux();   

        }   

       // 构造返回对象   

        MonitorInfoBean infoBean = new MonitorInfoBean();   

        infoBean.setFreeMemory(freeMemory);   

        infoBean.setFreePhysicalMemorySize(freePhysicalMemorySize);   

        infoBean.setMaxMemory(maxMemory);   

        infoBean.setOsName(osName);   

        infoBean.setTotalMemory(totalMemory);   

        infoBean.setTotalMemorySize(totalMemorySize);   

        infoBean.setTotalThread(totalThread); 

    

        infoBean.setUsedMemory(usedMemory);   

        infoBean.setCpuRatio(cpuRatio);   

        return infoBean;   

    }   

    private static double getCpuRateForLinux(){   

        InputStream is = null;   

        InputStreamReader isr = null;   

        BufferedReader brStat = null;   

        StringTokenizer tokenStat = null;   

        try{   

            System.out.println("Get usage rate of CUP , linux version: "+linuxVersion);   

  

            Process process = Runtime.getRuntime().exec("top -b -n 1");   

            is = process.getInputStream();                     

            isr = new InputStreamReader(is);   

            brStat = new BufferedReader(isr);   

            if(linuxVersion.equals("2.4")){   

                brStat.readLine();   

                brStat.readLine();   

                brStat.readLine();   

                brStat.readLine();   

                tokenStat = new StringTokenizer(brStat.readLine());   

                tokenStat.nextToken();   

                tokenStat.nextToken();   

                String user = tokenStat.nextToken();   

                tokenStat.nextToken();   

                String system = tokenStat.nextToken();   

                tokenStat.nextToken();   

                String nice = tokenStat.nextToken();   

                System.out.println(user+" , "+system+" , "+nice);   

                user = user.substring(0,user.indexOf("%"));   

                system = system.substring(0,system.indexOf("%"));   

                nice = nice.substring(0,nice.indexOf("%"));   

                 

                float userUsage = new Float(user).floatValue();   

                float systemUsage = new Float(system).floatValue();   

                float niceUsage = new Float(nice).floatValue();   

                return (userUsage+systemUsage+niceUsage)/100;   

            }else{   

                brStat.readLine();   

                brStat.readLine();     

                tokenStat = new StringTokenizer(brStat.readLine());   

                tokenStat.nextToken();   

                tokenStat.nextToken();   

                tokenStat.nextToken();   

                tokenStat.nextToken();   

                tokenStat.nextToken();   

                tokenStat.nextToken();   

                tokenStat.nextToken();   

                String cpuUsage = tokenStat.nextToken();   

                     

                 

                System.out.println("CPU idle : "+cpuUsage);   

                Float usage = new Float(cpuUsage.substring(0,cpuUsage.indexOf("%")));   

                 

                return (1-usage.floatValue()/100);   

            }   

  

              

        } catch(IOException ioe){   

            System.out.println(ioe.getMessage());   

            freeResource(is, isr, brStat);   

            return 1;   

        } finally{   

            freeResource(is, isr, brStat);   

        }   

  

    }   

    private static void freeResource(InputStream is, InputStreamReader isr, BufferedReader br){   

        try{   

            if(is!=null)   

                is.close();   

            if(isr!=null)   

                isr.close();   

            if(br!=null)   

                br.close();   

        }catch(IOException ioe){   

            System.out.println(ioe.getMessage());   

        }   

    }   

 

    /**  

     * 获得CPU使用率.  

     * @return 返回cpu使用率  

     * @author GuoHuang  

     */   

    private double getCpuRatioForWindows() {   

        try {   

            String procCmd = System.getenv("windir")   

                    + "\\system32\\wbem\\wmic.exe process get Caption,CommandLine,"   

                    + "KernelModeTime,ReadOperationCount,ThreadCount,UserModeTime,WriteOperationCount";   

            // 取进程信息   

            long[] c0 = readCpu(Runtime.getRuntime().exec(procCmd));   

            Thread.sleep(CPUTIME);   

            long[] c1 = readCpu(Runtime.getRuntime().exec(procCmd));   

            if (c0 != null && c1 != null) {   

                long idletime = c1[0] - c0[0];   

                long busytime = c1[1] - c0[1];   

                return Double.valueOf(   

                        PERCENT * (busytime) / (busytime + idletime))   

                        .doubleValue();   

            } else {   

                return 0.0;   

            }   

        } catch (Exception ex) {   

            ex.printStackTrace();   

            return 0.0;   

        }   

    }   

  

    /**       

 

* 读取CPU信息.  

     * @param proc  

     * @return  

     * @author GuoHuang  

     */   

    private long[] readCpu(final Process proc) {   

        long[] retn = new long[2];   

        try {   

            proc.getOutputStream().close();   

            InputStreamReader ir = new InputStreamReader(proc.getInputStream());   

            LineNumberReader input = new LineNumberReader(ir);   

            String line = input.readLine();   

            if (line == null || line.length() < FAULTLENGTH) {   

                return null;   

            }   

            int capidx = line.indexOf("Caption");   

            int cmdidx = line.indexOf("CommandLine");   

            int rocidx = line.indexOf("ReadOperationCount");   

            int umtidx = line.indexOf("UserModeTime");   

            int kmtidx = line.indexOf("KernelModeTime");   

            int wocidx = line.indexOf("WriteOperationCount");   

            long idletime = 0;   

            long kneltime = 0;   

            long usertime = 0;   

            while ((line = input.readLine()) != null) {   

                if (line.length() < wocidx) {   

                    continue;   

                }   

                // 字段出现顺序：Caption,CommandLine,KernelModeTime,ReadOperationCount,   

                // ThreadCount,UserModeTime,WriteOperation   

                String caption = Bytes.substring(line, capidx, cmdidx - 1)   

                        .trim();   

                String cmd = Bytes.substring(line, cmdidx, kmtidx - 1).trim();   

                if (cmd.indexOf("wmic.exe") >= 0) {   

                    continue;   

                }   

                // log.info("line="+line);   

                if (caption.equals("System Idle Process")   

                        || caption.equals("System")) {   

                    idletime += Long.valueOf(   

                            Bytes.substring(line, kmtidx, rocidx - 1).trim())   

                            .longValue();   

                    idletime += Long.valueOf(   

                            Bytes.substring(line, umtidx, wocidx - 1).trim())   

                            .longValue();   

                    continue;   

                }   

  

                kneltime += Long.valueOf( 

                        Bytes.substring(line, kmtidx, rocidx - 1).trim())   

                        .longValue();   

                usertime += Long.valueOf(   

                        Bytes.substring(line, umtidx, wocidx - 1).trim())   

                        .longValue();   

            }   

            retn[0] = idletime;   

            retn[1] = kneltime + usertime;   

            return retn;   

        } catch (Exception ex) {   

            ex.printStackTrace();   

        } finally {   

            try {   

                proc.getInputStream().close();   

            } catch (Exception e) {   

                e.printStackTrace();   

            }   

        }   

        return null;   

    }   

     

    /**     测试方法.  

     * @param args  

     * @throws Exception  

     * @author GuoHuang  

       */   

    public static void main(String[] args) throws Exception {   

    

        IMonitorService service = new MonitorServiceImp();   

        MonitorInfoBean monitorInfo = service.getMonitorInfoBean();   

        System.out.println("cpu占有率=" + monitorInfo.getCpuRatio());   

         

        System.out.println("可使用内存=" + monitorInfo.getTotalMemory());   

        System.out.println("剩余内存=" + monitorInfo.getFreeMemory());   

        System.out.println("最大可使用内存=" + monitorInfo.getMaxMemory());   

         

        System.out.println("操作系统=" + monitorInfo.getOsName());   

        System.out.println("总的物理内存=" + monitorInfo.getTotalMemorySize() + "kb");   

        System.out.println("剩余的物理内存=" + monitorInfo.getFreeMemory() + "kb");   

        System.out.println("已使用的物理内存=" + monitorInfo.getUsedMemory() + "kb");   

        System.out.println("线程总数=" + 

 monitorInfo.getTotalThread() + "kb");   

    }   

}   

Byte.java

package com.mxx.test;

//其中，Bytes类用来处理字符串   

public class Bytes {   

public static String substring(String src, int start_idx, int end_idx){   

    byte[] b = src.getBytes();   

    String tgt = "";   

    for(int i=start_idx; i<=end_idx; i++){   

        tgt +=(char)b[i];   

    }   

    return tgt;   

}   

}   

示例二：

package com.mxx.demo;

 

import java.io.InputStreamReader;

import java.io.LineNumberReader;

 

import sun.management.ManagementFactory;

 

import com.mxx.test.Bytes;

import com.sun.management.OperatingSystemMXBean;

 

public class Demo1 {

static double cpuRation = 0.0;

public static void main(String[] args) {

//操作系统

String osName = System.getProperty("os.name");

System.out.println("操作系统" + osName);

OperatingSystemMXBean osmxb = (OperatingSystemMXBean) ManagementFactory   

                .getOperatingSystemMXBean();

 // 可使用内存   

        long totalMemory = Runtime.getRuntime().totalMemory() / 1000;   

        // 剩余内存   

        long freeMemory = Runtime.getRuntime().freeMemory() / 1000;   

        // 最大可使用内存   

        long maxMemory = Runtime.getRuntime().maxMemory() / 1000;

        

        System.out.println("可使用内存"+totalMemory +"kb");

        System.out.println("剩余内存  "+freeMemory +"kb");

        System.out.println("最大可使用内存"+maxMemory +"kb");

        

        System.out.println("-------------------------------");

//总物理内存

long totalPhyMemory = osmxb.getTotalPhysicalMemorySize()/1000;

System.out.println("总物理内存" + totalPhyMemory + "kb");

//剩余物理内存

long freePhyMemory = osmxb.getFreePhysicalMemorySize() / 1000;

System.out.println("剩余物理内存" + freePhyMemory + "kb");

//已用物理内存

long usedPhyMemory = (totalPhyMemory - freePhyMemory) / 1000;

System.out.println("已用物理内存" + usedPhyMemory + "kb");

 // 获得线程总数   

        ThreadGroup parentThread = Thread.currentThread().getThreadGroup();   

        for (; parentThread.getParent() != null; parentThread = parentThread.getParent())   

            ;  

        

        int totalThread = parentThread.activeCount();

        

        System.out.println("线程总数：" +totalThread);

        System.out.println("------------------------");

        

        //java虚拟机空闲内存量

        long javaFreeMemory = Runtime.getRuntime().freeMemory();

        System.out.println("java虚拟机空闲内存" + javaFreeMemory);

        

        //java虚拟机试图使用最大内存量

        long javaMaxMemory = Runtime.getRuntime().maxMemory();

        System.out.println("java虚拟机试图使用最大内存" + javaMaxMemory);

        

        //java虚拟机最大内存量

    long javaTotalMemory = Runtime.getRuntime().totalMemory();

    System.out.println("java虚拟机最大内存" + javaTotalMemory);

           

        if (osName.toLowerCase().startsWith("windows")) {   

            cpuRation = getCpuRatioForWindows();  

        }

        

        System.out.println("cpu使用率：" + cpuRation +"%");

}

private static double getCpuRatioForWindows() {   

        try {   

            String procCmd = System.getenv("windir")   

                    + "\\system32\\wbem\\wmic.exe process get Caption,CommandLine,"   

                    + "KernelModeTime,ReadOperationCount,ThreadCount,UserModeTime,WriteOperationCount";   

            // 取进程信息   

            long[] c0 = readCpu(Runtime.getRuntime().exec(procCmd));   

            Thread.sleep(30);   

            long[] c1 = readCpu(Runtime.getRuntime().exec(procCmd));

            

            System.out.println(c0[0] + "," + c0[1]);            

            if (c0 != null && c1 != null) {   

                long idletime = c1[0] - c0[0];   

                long busytime = c1[1] - c0[1];   

                return Double.valueOf(   

                        100 * (busytime) / (busytime + idletime))   

                        .doubleValue();   

            } else {   

                return 0.0;   

            }   

        } catch (Exception ex) {   

            ex.printStackTrace();   

            return 0.0;   

        }   

    }  

private static long[] readCpu(final Process proc) {   

        long[] retn = new long[2];   

        try {   

            proc.getOutputStream().close();   

            InputStreamReader ir = new InputStreamReader(proc.getInputStream());   

            LineNumberReader input = new LineNumberReader(ir);   

            String line = input.readLine();

            if (line == null || line.length() < 10) {   

                return null;   

            }    

            int capidx = line.indexOf("Caption");   

            int cmdidx = line.indexOf("CommandLine");   

            int rocidx = line.indexOf("ReadOperationCount");   

            int umtidx = line.indexOf("UserModeTime");   

            int kmtidx = line.indexOf("KernelModeTime");   

            int wocidx = line.indexOf("WriteOperationCount");

            

            long idletime = 0;   

            long kneltime = 0;   

            long usertime = 0;   

            

            while ((line = input.readLine()) != null) {

                if (line.length() < wocidx) {   

                    continue;   

                }   

                

                // 字段出现顺序：

Caption,CommandLine,KernelModeTime,ReadOperationCount,   

                // ThreadCount,UserModeTime,WriteOperation   

                String caption = Bytes.substring(line, capidx, cmdidx - 1)   

                        .trim();   

                String cmd = Bytes.substring(line, cmdidx, kmtidx - 1).trim();   

                if (cmd.indexOf("wmic.exe") >= 0) {   

                    continue;   

                }   

                // log.info("line="+line);   

                if (caption.equals("System Idle Process")   

                        || caption.equals("System")) {

                

                    idletime += Long.valueOf(   

                            Bytes.substring(line, kmtidx, rocidx - 1).trim())   

                            .longValue();   

                    idletime += Long.valueOf(   

                            Bytes.substring(line, umtidx, wocidx - 1).trim())   

                            .longValue();   

                    continue;   

                }   

  

                kneltime += Long.valueOf(   

                        Bytes.substring(line, kmtidx, rocidx - 1).trim())   

                        .longValue();   

                usertime += Long.valueOf(   

                        Bytes.substring(line, umtidx, wocidx - 1).trim())   

                        .longValue();   

            }   

            retn[0] = idletime;   

            retn[1] = kneltime + usertime;   

            return retn;   

        } catch (Exception ex) {   

            ex.printStackTrace();   

        } finally {   

            try {   

                proc.getInputStream().close();   

            } catch (Exception e) {   

                e.printStackTrace();   

            }   

        }   

       return null;   

    }   

}