跨平台获取java历程id(Process ID in Java)
跨平台获取java进程id(Process ID in Java)对于不同平台，获取java进程id有不同的方法，这个做一个总结，写一
跨平台获取java进程id(Process ID in Java)
对于不同平台，获取java进程id有不同的方法，这个做一个总结，写一个工具类。
这个工具主要进行两种尝试来获得pid：
从 java.lang.management.RuntimeMXBean获得从操作系统获得windows系统非windows系统
工具代码：
/**??*?Process?ID?in?Java??*???*?@author?lichengwu??*?@created?2012-1-18??*???*?@version?1.0??*/??public?final?class?PID?{????????private?static?final?Log?log?=?LogFactory.getLog(PID.class);????????/**??????*?私有构造方法??????*/??????private?PID()?{??????????super();??????}????????/**??????*?获得java进程id??????*???????*?@author?lichengwu??????*?@created?2012-1-18??????*???????*?@return?java进程id??????*/??????public?static?final?String?getPID()?{??????????String?pid?=?System.getProperty("pid");??????????if?(pid?==?null)?{??????????????RuntimeMXBean?runtimeMXBean?=?ManagementFactory.getRuntimeMXBean();??????????????String?processName?=?runtimeMXBean.getName();??????????????if?(processName.indexOf('@')?!=?-1)?{??????????????????pid?=?processName.substring(0,?processName.indexOf('@'));??????????????}?else?{??????????????????pid?=?getPIDFromOS();??????????????}??????????????System.setProperty("pid",?pid);??????????}??????????return?pid;??????}????????/**??????*?从操作系统获得pid??????*?<p>??????*?对于windows，请参考:http://www.scheibli.com/projects/getpids/index.html??????*???????*?@author?lichengwu??????*?@created?2012-1-18??????*??????*?@return??????*/??????private?static?String?getPIDFromOS()?{????????????String?pid?=?null;????????????String[]?cmd?=?null;????????????File?tempFile?=?null;????????????String?osName?=?ParameterUtil.getParameter(Parameter.OS_NAME);??????????//?处理windows??????????if?(osName.toLowerCase().contains("windows"))?{??????????????FileInputStream?fis?=?null;??????????????FileOutputStream?fos?=?null;????????????????try?{??????????????????//?创建临时getpids.exe文件??????????????????tempFile?=?File.createTempFile("getpids",?".exe");??????????????????File?getpids?=?new?File(ParameterUtil.getResourcePath("getpids.exe"));??????????????????fis?=?new?FileInputStream(getpids);??????????????????fos?=?new?FileOutputStream(tempFile);??????????????????byte[]?buf?=?new?byte[1024];??????????????????while?(fis.read(buf)?!=?-1)?{??????????????????????fos.write(buf);??????????????????}??????????????????//?获得临时getpids.exe文件路径作为命令??????????????????cmd?=?new?String[]?{?tempFile.getAbsolutePath()?};??????????????}?catch?(FileNotFoundException?e)?{??????????????????log.equals(e);??????????????}?catch?(IOException?e)?{??????????????????log.equals(e);??????????????}?finally?{??????????????????if?(tempFile?!=?null)?{??????????????????????tempFile.deleteOnExit();??????????????????}??????????????????Closer.close(fis,?fos);??????????????}??????????}??????????//?处理非windows??????????else?{??????????????cmd?=?new?String[]?{?"/bin/sh",?"-c",?"echo?$$?$PPID"?};??????????}??????????InputStream?is?=?null;??????????ByteArrayOutputStream?baos?=?null;??????????try?{??????????????byte[]?buf?=?new?byte[1024];??????????????Process?exec?=?Runtime.getRuntime().exec(cmd);??????????????is?=?exec.getInputStream();??????????????baos?=?new?ByteArrayOutputStream();??????????????while?(is.read(buf)?!=?-1)?{??????????????????baos.write(buf);??????????????}??????????????String?ppids?=?baos.toString();??????????????//?对于windows参考：http://www.scheibli.com/projects/getpids/index.html??????????????pid?=?ppids.split("?")[1];??????????}?catch?(Exception?e)?{??????????????log.error(e);??????????}?finally?{??????????????if?(tempFile?!=?null)?{??????????????????tempFile.deleteOnExit();??????????????}??????????????Closer.close(is,?baos);??????????}??????????return?pid;??????}??}?
