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  • java程序 启动时参数

     
    iEMP34:/opt/version/lktest/b030/jre/jre_linux/bin # ./java -classpath .  SysInfo
    Exception in thread "main" java.lang.NoClassDefFoundError: org/hyperic/sigar/SigarException
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
        at java.lang.Class.getMethod0(Unknown Source)
        at java.lang.Class.getMethod(Unknown Source)
        at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
    Caused by: java.lang.ClassNotFoundException: org.hyperic.sigar.SigarException
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 6 more
    iEMP34:/opt/version/lktest/b030/jre/jre_linux/bin # ./java -classpath  "."  SysInfo
    Exception in thread "main" java.lang.NoClassDefFoundError: org/hyperic/sigar/SigarException
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
        at java.lang.Class.getMethod0(Unknown Source)
        at java.lang.Class.getMethod(Unknown Source)
        at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
    Caused by: java.lang.ClassNotFoundException: org.hyperic.sigar.SigarException
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 6 more
    iEMP34:/opt/version/lktest/b030/jre/jre_linux/bin # ./java -classpath  /opt/version/lktest/b030/jre/jre_linux/bin:.  SysInfo
    Exception in thread "main" java.lang.NoClassDefFoundError: org/hyperic/sigar/SigarException
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
        at java.lang.Class.getMethod0(Unknown Source)
        at java.lang.Class.getMethod(Unknown Source)
        at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
        at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
    Caused by: java.lang.ClassNotFoundException: org.hyperic.sigar.SigarException
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 6 more
    iEMP34:/opt/version/lktest/b030/jre/jre_linux/bin # ./java -classpath  /opt/version/lktest/b030/jre/jre_linux/bin/sigar.jar:.  SysInfo
    no libsigar-amd64-linux.so in java.library.path
    org.hyperic.sigar.SigarException: no libsigar-amd64-linux.so in java.library.path
        at org.hyperic.sigar.Sigar.loadLibrary(Sigar.java:172)
        at org.hyperic.sigar.Sigar.<clinit>(Sigar.java:100)
        at SysInfo.getCpuCount(SysInfo.java:39)
        at SysInfo.main(SysInfo.java:25)
    Exception in thread "main" java.lang.UnsatisfiedLinkError: org.hyperic.sigar.Sigar.getCpuInfoList()[Lorg/hyperic/sigar/CpuInfo;
        at org.hyperic.sigar.Sigar.getCpuInfoList(Native Method)
        at SysInfo.getCpuCount(SysInfo.java:41)
        at SysInfo.main(SysInfo.java:25)
    You have new mail in /var/mail/root
    View Code

    必须指定具体jar才行吗?

    同时注意-cp 和 classpath  是一个意思

    -cp <class search path of directories and zip/jar files>
    -classpath <class search path of directories and zip/jar files>
    A ; separated list of directories, JAR archives,
    and ZIP archives to search for class files.

    这样都不行吗:-classpath /opt/version/lktest/b030/jre/jre_linux/bin/ 

    ———— 看来就是必须指定具体jar,而不能是目录!

    -D<name>=<value> ----- 这就是相当于设置了system参数,之后可以使用System.getProperty(name)来获取。
    set a system property

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  • 原文地址:https://www.cnblogs.com/FlyAway2013/p/3663756.html
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