通过JVM获取相关的服务器信息 .

转载于：http://blog.csdn.net/kongqz/article/details/4171539

 

 

在我们想监控我们的JVM状态的时候，除了可以通过JMX这类jvm提供的接口服务，还是可以自己通过程序来编写一些接口来获取服务器状态信息。

以下代码我在jdk1.5.10版本上测试通过。

import java.lang.management.CompilationMXBean;import java.lang.management.GarbageCollectorMXBean;import java.lang.management.MemoryMXBean;import java.lang.management.MemoryPoolMXBean;import java.lang.management.RuntimeMXBean;import java.lang.management.ThreadMXBean;import java.util.List;import sun.management.ManagementFactory;import com.sun.management.OperatingSystemMXBean;/** * java获取所在操作系统的信息，JVM的相关信息 * @author kongqz * */public class MyJvm {/** * @param 直接通过jdk来获取系统相关状态，在1.5.0_10-b03版本以上测试通过 */public static void main(String[] args) {System.out.println("=======================通过java来获取相关系统状态============================ ");int i = (int)Runtime.getRuntime().totalMemory()/1024;//Java 虚拟机中的内存总量,以字节为单位System.out.println("总的内存量 i is "+i);int j = (int)Runtime.getRuntime().freeMemory()/1024;//Java 虚拟机中的空闲内存量System.out.println("空闲内存量 j is "+j);System.out.println("最大内存量 is "+Runtime.getRuntime().maxMemory()/1024);System.out.println("=======================OperatingSystemMXBean============================ ");OperatingSystemMXBean osm = (OperatingSystemMXBean) ManagementFactory.getOperatingSystemMXBean();    System.out.println(osm.getFreeSwapSpaceSize()/1024);    System.out.println(osm.getFreePhysicalMemorySize()/1024);    System.out.println(osm.getTotalPhysicalMemorySize()/1024);        //获取操作系统相关信息    System.out.println("osm.getArch() "+osm.getArch());    System.out.println("osm.getAvailableProcessors() "+osm.getAvailableProcessors());    System.out.println("osm.getCommittedVirtualMemorySize() "+osm.getCommittedVirtualMemorySize());    System.out.println("osm.getName() "+osm.getName());    System.out.println("osm.getProcessCpuTime() "+osm.getProcessCpuTime());    System.out.println("osm.getVersion() "+osm.getVersion());    //获取整个虚拟机内存使用情况    System.out.println("=======================MemoryMXBean============================ ");    MemoryMXBean mm=(MemoryMXBean)ManagementFactory.getMemoryMXBean();    System.out.println("getHeapMemoryUsage "+mm.getHeapMemoryUsage());    System.out.println("getNonHeapMemoryUsage "+mm.getNonHeapMemoryUsage());    //获取各个线程的各种状态，CPU 占用情况，以及整个系统中的线程状况    System.out.println("=======================ThreadMXBean============================ ");    ThreadMXBean tm=(ThreadMXBean)ManagementFactory.getThreadMXBean();    System.out.println("getThreadCount "+tm.getThreadCount());    System.out.println("getPeakThreadCount "+tm.getPeakThreadCount());    System.out.println("getCurrentThreadCpuTime "+tm.getCurrentThreadCpuTime());    System.out.println("getDaemonThreadCount "+tm.getDaemonThreadCount());    System.out.println("getCurrentThreadUserTime "+tm.getCurrentThreadUserTime());        //当前编译器情况    System.out.println("=======================CompilationMXBean============================ ");    CompilationMXBean gm=(CompilationMXBean)ManagementFactory.getCompilationMXBean();    System.out.println("getName "+gm.getName());    System.out.println("getTotalCompilationTime "+gm.getTotalCompilationTime());        //获取多个内存池的使用情况    System.out.println("=======================MemoryPoolMXBean============================ ");    List<MemoryPoolMXBean> mpmList=ManagementFactory.getMemoryPoolMXBeans();    for(MemoryPoolMXBean mpm:mpmList){    System.out.println("getUsage "+mpm.getUsage());    System.out.println("getMemoryManagerNames "+mpm.getMemoryManagerNames().toString());    }        //获取GC的次数以及花费时间之类的信息    System.out.println("=======================MemoryPoolMXBean============================ ");    List<GarbageCollectorMXBean> gcmList=ManagementFactory.getGarbageCollectorMXBeans();    for(GarbageCollectorMXBean gcm:gcmList){    System.out.println("getName "+gcm.getName());    System.out.println("getMemoryPoolNames "+gcm.getMemoryPoolNames());    }        //获取运行时信息    System.out.println("=======================RuntimeMXBean============================ ");    RuntimeMXBean rmb=(RuntimeMXBean)ManagementFactory.getRuntimeMXBean();    System.out.println("getClassPath "+rmb.getClassPath());    System.out.println("getLibraryPath "+rmb.getLibraryPath());    System.out.println("getVmVersion "+rmb.getVmVersion());}}