通过JVM获取相关的服务器信息

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());}}