JAVA代码中获取JVM信息

一、JAVA中获取JVM的信息

　　原理，利用JavaSDK自带的ManagementFactory类来获取。

二、获取信息

1、获取进程ID

    @Test
    public void test1() {
        RuntimeMXBean mxb = ManagementFactory.getRuntimeMXBean();
        System.out.println(mxb.getName()); //2668@Sindrol-PC
    }

2、获取ManagementFactory.getRuntimeMXBean()的其它信息

RuntimeMXBean mxb = ManagementFactory.getRuntimeMXBean();
mxb.getSystemProperties() = {HashMap@866}  size = 56
mxb.getInputArguments() = {Collections$UnmodifiableRandomAccessList@1039}  size = 5
mxb.getBootClassPath() = "C:\Program Files\Java\jdk1.8.0_161\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\rt.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_161\jre\classes;D:\Applicaton\DevTools\JetBrains\IntelliJIDEA\lib\rt\debugger-agent-storage.jar"
mxb.getLibraryPath() = "C:\Program Files\Java\jdk1.8.0_161\bin;C:\windows\Sun\Java\bin;C:\windows\system32;C:\windows;C:\Program Files\Docker\Docker\Resources\bin;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\bin;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\libnvvp;C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\lib\x64;D:\Applicaton\DevTools\Python\3.5\Scripts\;D:\Applicaton\DevTools\Python\3.5\;D:\Applicaton\DevTools\cudnn-8.0-windows10-x64-v5.1\cuda;D:\Applicaton\DevTools\cudnn-8.0-windows10-x64-v5.1\cuda\bin;D:\Applicaton\DevTools\cudnn-8.0-windows10-x64-v5.1\cuda\lib\x64;D:\Applicaton\DevTools\cudnn-8.0-windows10-x64-v5.1\cuda\lib;C:\Program Files (x86)\Common Files\NetSarang;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program Files\Microsoft SQL Server\120\Tools\Binn\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft\Web Platform Installer\;C:\Program Files (x86)\Microsoft SDKs\Azure\CL"
mxb.getClassPath() = "D:\Applicaton\DevTools\JetBrains\IntelliJIDEA\lib\idea_rt.jar;D:\Applicaton\DevTools\JetBrains\IntelliJIDEA\plugins\junit\lib\junit-rt.jar;D:\Applicaton\DevTools\JetBrains\IntelliJIDEA\plugins\junit\lib\junit5-rt.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_161\jre\lib\ext\sunpkcs11.jar;C:\Pr"
mxb.getManagementSpecVersion() = "1.2"
mxb.getSpecName() = "Java Virtual Machine Specification"
mxb.getSpecVendor() = "Oracle Corporation"
mxb.getStartTime() = 1527587462275
mxb.getUptime() = 95372
mxb.getVmVendor() = "Oracle Corporation"
mxb.getObjectName() = {ObjectName@1052} "java.lang:type=Runtime"
mxb.getName() = "2668@Sindrol-NTB"

 3、获取操作系统信息

    @Test
    public void test2() {
        OperatingSystemMXBean osb = ManagementFactory.getOperatingSystemMXBean();
        System.out.println(osb.getName()); //Windows 10
        System.out.println(osb.getArch()); //amd 64
        System.out.println(osb.getAvailableProcessors()); //4
        System.out.println(osb.getVersion()); //10.0
        System.out.println(osb.getSystemLoadAverage()); //-1.0

    }