添加pingutil
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@@ -8,7 +8,7 @@ import java.math.BigDecimal;
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* 作者: xiangwb
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* 说明: 数字工具类
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*/
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public class DoubleUtil {
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public class DecimalUtil {
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private static final int DEF_DIV_SCALE = 10;
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/**
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@@ -0,0 +1,101 @@
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package com.xwbing.util;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.net.InetAddress;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* 项目名称: boot-module-demo
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* 创建时间: 2017/11/17 11:43
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* 作者: xiangwb
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* 说明: PingUtil
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*/
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public class PingUtil {
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/**
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* Jdk1.5的InetAddresss,代码简单
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*
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* @param ipAddress
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* @return
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*/
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public static boolean ping(String ipAddress) {
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int timeOut = 3000; // 超时应该在3钞以上
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try {
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return InetAddress.getByName(ipAddress).isReachable(timeOut);// 当返回值是true时,说明host是可用的,false则不可。
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} catch (IOException e) {
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throw new RuntimeException("无法连接该地址");
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}
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}
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/**
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* 使用java调用cmd命令,这种方式最简单,可以把ping的过程显示在本地。
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*
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* @param ipAddress
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*/
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public static boolean pingCmd(String ipAddress) {
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String line;
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try {
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Process pro = Runtime.getRuntime().exec("ping " + ipAddress);
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//根据操作系统修改字符,否则乱码(windows:gbk,linux:utf-8)
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BufferedReader buf = new BufferedReader(new InputStreamReader(pro.getInputStream(), "gbk"));
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while ((line = buf.readLine()) != null)
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System.out.println(line);
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return true;
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} catch (Exception ex) {
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throw new RuntimeException("无法连接该地址");
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}
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}
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/**
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* 也是使用java调用控制台的ping命令,这个比较可靠,还通用,使用起来方便:传入个ip,设置ping的次数和超时,就可以根据返回值来判断是否ping通。
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*
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* @param ipAddress
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* @param pingTimes
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* @param timeOut
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* @return
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*/
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public static boolean ping(String ipAddress, int pingTimes, int timeOut) {
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BufferedReader br;
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Runtime r = Runtime.getRuntime(); // 将要执行的ping命令,此命令是windows格式的命令
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String pingCommand = "ping " + ipAddress + " -n " + pingTimes + " -w " + timeOut;
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try { // 执行命令并获取输出
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System.out.println(pingCommand);
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Process p = r.exec(pingCommand);
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if (p == null) {
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return false;
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}
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br = new BufferedReader(new InputStreamReader(p.getInputStream())); // 逐行检查输出,计算类似出现=23ms
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// TTL=62字样的次数
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int connectedCount = 0;
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String line;
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while ((line = br.readLine()) != null) {
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connectedCount += getCheckResult(line);
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} // 如果出现类似=23ms TTL=62这样的字样,出现的次数=测试次数则返回真
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br.close();
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return connectedCount == pingTimes;
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} catch (Exception ex) {
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throw new RuntimeException("无法连接该地址");
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}
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}
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// 若line含有=18ms TTL=16字样,说明已经ping通,返回1,否則返回0.
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private static int getCheckResult(String line) { // System.out.println("控制台输出的结果为:"+line);
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Pattern pattern = Pattern.compile("(\\d+ms)(\\s+)(TTL=\\d+)",
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Pattern.CASE_INSENSITIVE);
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Matcher matcher = pattern.matcher(line);
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while (matcher.find()) {
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return 1;
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}
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return 0;
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}
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public static void main(String[] args) throws Exception {
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String ipAddress = "127.0.0.1";
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pingCmd(ipAddress);
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System.out.println(ping(ipAddress));
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System.out.println(ping(ipAddress, 5, 5000));
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}
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}
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