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

package netManager.discovery; 
 
/** 
 * 
Title: PingThread 
 
 * 
Description: 	保存在线IP地址 
 *					通过JNI调用C++写的Ping.dll，测试该IP地址是否在线.
 
 * 
Copyright: Copyright (c) 2006 
 
 * 
Company: 
 
 * @author：谢飞 
 * @version 1.0 
 */ 
  
 //import java.util.concurrent.Callable;				//类似于Runnable,可以从线程中返回一个值 
 //import netManager.util.ConnDB;	 
 //import java.sql.Connection; 
 import org.apache.commons.logging.Log; 
 import org.apache.commons.logging.LogFactory; 
  
 public class PingThread implements Runnable { 
 	 
 	private String hostIP;						//需要测试的IP地址 
 	private IPSaving ips; 
 	private Log log = LogFactory.getLog("PingThread"); 
 	 
 	public PingThread(String hostIP,IPSaving ips){ 
 		this.hostIP = hostIP; 
 		this.ips = ips; 
 	} 
  
 	static String path = System.getProperty("user.dir"); 
 	 
 	static { 
 		System.load(path + "\\ping.dll");			//调用ping.dll执行ping 
 		//System.load(path + "/ping.dll");			//调用ping.dll执行ping 
 	} 
 		 
 	public native int ping(String hostIP); 
 		 
 	public synchronized void run() { 
 		try{ 
 			//log.info(hostIP); 
 			//ips.amountAdding(1); 
 			//System.out.print("ss"); 
 			int rs = ping(hostIP);				//rs - 1；主机在线，否则不在线或异常 
 			if(rs == 1){ 
 				ips.getIP(hostIP); 
 				ips.amountAdding(1); 
 			} 
 			else{ 
 				ips.amountAdding(0); 
 			} 
 			//ips.setFlag(true); 
 		} 
 		catch(Exception e){ 
 			log.error(e); 
 		} 
  	} 
 	 
 }