package seablog.reconet;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.text.SimpleDateFormat;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.Timer;
import java.util.TimerTask;
/**
* 每分钟自动检测是否断网,若断网,便重启网卡
* <br>
* Usage: java -jar RecoNet.jar -dev dev_id [-host ping_host]
* <br>
* 附:<a href="http://www.233.com/microsoft/zonghe/20110103/144530473.html">devcon.exe程序下载</a>
*/
public class RecoNet extends TimerTask {
RecoNetConfig cfg;
public RecoNet(RecoNetConfig cfg) {
this.cfg = cfg;
}
/**
* 网络是否正常
*/
public boolean isConnected(String host) {
try {
InetAddress.getByName(host);
return true;
} catch (UnknownHostException e) {
return false;
}
}
public void disableDev(String dev) throws IOException {
Runtime.getRuntime().exec("devcon disable " + dev);
}
public void enableDev(String dev) throws IOException {
Runtime.getRuntime().exec("devcon enable " + dev);
}
static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
Set<String> runningSet = Collections.synchronizedSet(new HashSet<String>());
public void run() {
try {
// isRunning = true;
String now = sdf.format(new Date());
if (runningSet.contains(now)) {
System.out.println(now + " Already Run.");
return;
}
if (runningSet.size() > 24 * 60) {
runningSet.clear();
}
runningSet.add(now);
if (isConnected(cfg.getHost())) {
System.out.println(now + " Ping OK.[" + cfg.getHost() + "]");
return;
}
System.out.println(now + " Reboot " + cfg.getDevID() + ".");
disableDev(cfg.getDevID());
// 休眠5秒钟,等待disableDev执行...
Thread.sleep(1000 * 5);
enableDev(cfg.getDevID());
} catch (Throwable e) {
e.printStackTrace();
}
}
static String ARG_HELP = "help";
static String ARG_DEV = "-dev";
static String ARG_HOST = "-host";
/**
* 定时检测无线网络
*/
public static void main(String[] args) {
if (args.length == 0 || ARG_HELP.equalsIgnoreCase(args[0])) {
System.out
.println("Usage:\tjava -jar RecoNet.jar -dev dev_id [-host ping_host]");
System.out
.println("e.g.\tjava -jar RecoNet.jar -dev *DEV_422C* -host baidu.com\n");
return;
}
Map<String, String> map = new HashMap<String, String>();
try {
for (int i = 0; i < args.length; i += 2) {
map.put(args[i].toLowerCase(), args[i + 1]);
}
} catch (IndexOutOfBoundsException e) {
// do nothing
}
RecoNetConfig cfg = new RecoNetConfig();
if (map.get(ARG_DEV) != null){
cfg.setDevID(map.get(ARG_DEV));
}
if (map.get(ARG_HOST) != null){
cfg.setHost(map.get(ARG_HOST));
}
map.clear();
// 每分钟执行
new Timer().scheduleAtFixedRate(new RecoNet(cfg), 1000, 1000 * 60);
}
}
package seablog.reconet;
public class RecoNetConfig {
/**
* 网卡标识
*/
String devID = "*DEV_422C*";
/**
* 用于测试是否断网
*/
String host = "baidu.com";
public String getDevID() {
return devID;
}
public void setDevID(String devID) {
this.devID = devID;
}
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
}
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