java查看网络是不是通

java查看网络是否通

思路：利用runtime调用 ping命令。

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package test.network;import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;public class TestNetworkConnection {public static void main(String[] args) {new TestNetworkConnection().start();}public void start(){Runtime runtime=Runtime.getRuntime();try {Process process=runtime.exec("ping "+"10.4.46.194");InputStream is=process.getInputStream();InputStreamReader isr=new InputStreamReader(is);BufferedReader br=new BufferedReader(isr);String line=null;StringBuffer sb=new StringBuffer();while((line=br.readLine())!=null){sb.append(line);//System.out.println("返回值为:"+line);}is.close();isr.close();br.close();if(null != sb && !sb.toString().equals("")){if(sb.toString().indexOf("TTL")>0){System.out.println("网络通畅");}else{System.out.println("网络有问题");}}} catch (Exception e) {e.printStackTrace();}}}

refurl:http://www.itpub.net/thread-340898-1-1.html

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