URL url 
								=
								 UserServiceImpl.
								class
								.getResource(
								"
								/config/log4j.properties
								"
								);
Properties properties 
								=
								 
								new
								 Properties();
								try
								 {
     properties.load(
								new
								 InputStreamReader(url.openStream()));
    } 
								catch
								 (IOException e) {
        e.printStackTrace();
    }
PropertyConfigurator.configure(properties);
						
				
				
						
								
/config/log4j.properties 可以放在对应的jar文件中