这种情况下Properties文件放在和‘当前类’同一目录下 

<span style="font-size:14px;">Properties p = new Properties();   
InputStream in = 当前类.class.getResourceAsStream("Properties文件名");  
p.load(in); </span>

这种情况下Properties文件放在src根目录下

<span style="font-size:14px;">Properties p = new Properties();   
InputStream in = 当前类.class.getClassLoader().getResourceAsStream("Properties文件名");  
p.load(in);  </span>

http://memomemo.iteye.com/blog/978210