java代碼——返回當(dāng)前計算機所有進程ID怎么做？

獲取JAVA進程：

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package?com.test;

import?java.lang.management.ManagementFactory;

import?java.lang.management.RuntimeMXBean;

public?class?Target?{

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

System.out.println(getProcessID());

while(true)?{

Thread.sleep(10000);

}

}

public?static?final?int?getProcessID()?{??

RuntimeMXBean?runtimeMXBean?=?ManagementFactory.getRuntimeMXBean();

System.out.println(runtimeMXBean.getName());

return?Integer.valueOf(runtimeMXBean.getName().split("@")[0])??

.intValue();??

}?

}

獲取所有正在運行著的Java進程

package?com.test;

import?java.util.HashSet;

import?java.util.Set;

import?sun.jvmstat.monitor.MonitoredHost;

import?sun.jvmstat.monitor.MonitoredVm;

import?sun.jvmstat.monitor.MonitoredVmUtil;

import?sun.jvmstat.monitor.VmIdentifier;

public?class?ProcessID?{

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

//?獲取監(jiān)控主機

MonitoredHost?local?=?MonitoredHost.getMonitoredHost("localhost");

//?取得所有在活動的虛擬機集合

Set??vmlist?=?new?HashSetObject(local.activeVms());

//?遍歷集合，輸出PID和進程名

for(Object?process?:?vmlist)?{

MonitoredVm?vm?=?local.getMonitoredVm(new?VmIdentifier("http://"?+?process));

//?獲取類名

String?processname?=?MonitoredVmUtil.mainClass(vm,?true);

System.out.println(process?+?"?------?"?+?processname);

}

}

}

可以直接根據(jù)類找到對應(yīng)Java進程ID的方法

package?com.test;

import?java.net.URISyntaxException;

import?java.util.HashSet;

import?java.util.Set;

import?sun.jvmstat.monitor.MonitorException;

import?sun.jvmstat.monitor.MonitoredHost;

import?sun.jvmstat.monitor.MonitoredVm;

import?sun.jvmstat.monitor.MonitoredVmUtil;

import?sun.jvmstat.monitor.VmIdentifier;

public?class?ProcessID?{

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

int?pid?=?getProcess(Target.class);

System.out.println("PID:?"+pid);

}

public?static?int?getProcess(Class??cls)?throws?MonitorException,?URISyntaxException?{

if(cls?==?null)?{

return?-1;

}

//?獲取監(jiān)控主機

MonitoredHost?local?=?MonitoredHost.getMonitoredHost("localhost");

//?取得所有在活動的虛擬機集合

Set??vmlist?=?new?HashSetObject(local.activeVms());

//?遍歷集合，輸出PID和進程名

for(Object?process?:?vmlist)?{

MonitoredVm?vm?=?local.getMonitoredVm(new?VmIdentifier("http://"?+?process));

//?獲取類名

String?processname?=?MonitoredVmUtil.mainClass(vm,?true);

if(cls.getName().equals(processname))?{

return?((Integer)process).intValue();

}

}

return?-1;

}

}

java獲取進程名稱

代碼：

package com.test;

import java.lang.management.ManagementFactory;

import java.lang.management.RuntimeMXBean;

public class Target {

public static void main(String[] args) throws InterruptedException { System.out.println(getProcessID());

while(true) {

Thread.sleep(10000);

}

}

public static final int getProcessID() {

RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();

System.out.println(runtimeMXBean.getName());

return Integer.valueOf(runtimeMXBean.getName().split("@")[0]) .intValue();

}

}

運行結(jié)果：2896@PC-20150603VRPL2896

當(dāng)前進程ID為2896。

ManagementFactory是一個在運行時管理和監(jiān)控Java VM的工廠類，它能提供很多管理VM的靜態(tài)接口，比如RuntimeMXBean；

RuntimeMXBean是Java虛擬機的運行時管理接口.

java 獲取指定的進程id

package test;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.PrintWriter;

public class GetPid {

private static final String PNAME = "QQ";

public static void main(String[] args)

throws IOException {

System.out.println("包含關(guān)鍵字 "+PNAME+" 的進程有：");

System.out.println();

String path = System.getProperty("user.dir");

final File createFileName = new File(path + "\\mytempscript.vbe");

if(createFileName.exists()?createFileName.delete():createFileName.createNewFile()){}

final PrintWriter pw = new PrintWriter(new FileWriter(createFileName,

true), true);

pw.println("for each ps in getobject(\"winmgmts:\\\\.\\root\\cimv2:win32_process\").instances_");

pw.println("wscript.echo ps.handlevbtabps.name");

pw.println("next");

pw.close();

final InputStream ii = Runtime.getRuntime().exec(

"cscript " + path + "\\mytempscript.vbe").getInputStream();

final InputStreamReader ir = new InputStreamReader(ii);

final BufferedReader br = new BufferedReader(ir);

String str = null;

String[] ss = null;

while ((str = br.readLine()) != null) {

if (str.indexOf(PNAME)0str.endsWith(".exe")) {

ss = str.split("\\s");

for(int i=0;iss.length;i+=2){

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

System.out.println("進程名："+ss[i+1]+"\n進程ID："+ss[i]);

}

}

}

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

ir.close();

ii.close();

br.close();

}

}

運行結(jié)果如下

包含關(guān)鍵字 QQ 的進程有：

****************************

進程名：QQ.exe

進程ID：3956

****************************