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String osName = props.getProperty("os.name"); //²Ù×÷ϵͳÃû³Æ
String osArch = props.getProperty("os.arch"); //²Ù×÷ϵͳ¹¹¼Ü
String osVersion = props.getProperty("os.version"); //²Ù×÷ϵͳ°æ±¾
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java.version
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user.name
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