??????java??ó??????У??????????????????????????????????????????????????????xml??????????java?д???.properties???????????????????á???java?У???Properties????????????????????????????????????????????????????????
public static String getvalue(String key)
{
Properties p=new Properties();
FileInputStream fis;
String url = new File("").getAbsolutePath() + File.separator+  "config.properties"; // ???λ?????????μ?config.properties???????·??
try {
fis = new FileInputStream(url);
p.load(fis);
fis.close();
} catch (Exception e) {
// TODO Auto-generated catch block
System.out.print("problems with properties");
e.printStackTrace();
}
return p.getProperty(key);
}