遍历一下Properties

Properties p=System.getProperties();for(Enumeration e=p.propertyNames(); e.hasMoreElements();){String key=(String) e.nextElement();System.out.println(key+"===>"+p.getProperty(key));}

方法二：

Properties p=System.getProperties();for(Object t:p.keySet()){System.out.println(t+"="+p.getProperty(t.toString()));}