java获取一些硬件配置

àì夳堔傛蜴生んèń 2022-07-21 01:17 467阅读 0赞

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();

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

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();

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

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;

java获取一些硬件配置

发表评论取消回复

还没有评论，来说两句吧...

相关阅读

相关如何使用Python获取硬件信息？

相关使用 C# 获取计算机硬件信息

相关 java 获取计算机硬件运行信息 java探针

相关获取服务器硬件详情(python)

相关 js怎么获取电脑硬件信息？

相关 java获取一些硬件配置

相关面向硬件编程的一些思考

相关 C/C++通过Windows API和WMI系统函数获取获取系统硬件配置信息

相关 android获取硬件信息

相关技巧获取电脑硬件信息 -转发