www.pudn.com > network-java.rar > SubnetMask.java

package netManager.discovery; 
 
/** 
 * 
Title: SubnetMask 
 
 * 
Description: 获得本地子网掩码 
 
 * 
Copyright: Copyright (c) 2006 
 
 * 
Company: 
 
 * @author：谢飞 
 * @version 1.0 
 */ 
  
 import netManager.util.PropUtil; 
 import netManager.framework.exception.BaseException; 
 import org.apache.commons.logging.Log; 
 import org.apache.commons.logging.LogFactory; 
  
 public final class SubnetMask{ 
 	 
 	public static String getSubnetMask() throws BaseException{ 
 		String subnetMask = null; 
 		Log log = LogFactory.getLog("SubnetMask"); 
 		PropUtil prop = new PropUtil("prop.properties");  //注意：在struts中该文件默认在\bin中(使用Tomecat) 
 		subnetMask = prop.getSubnetMask();		//从配置文件中获取本机子网掩码 
		if(subnetMask == null || subnetMask.equals("")){ 
			BaseException be = new BaseException(); 
			log.error(be);			 
			be.setMessageKey("error.subnetmask"); 
			throw be; 
		} 
 		return subnetMask; 
 	} 
 }