Java实现批量ping IP地址

• 代码

  package com.ruoyi.web.controller.earlywarn;
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStreamReader;
  
  /**
   * 可以实现对指定网段的IP地址进行ping测试
   */
  public class Ping {
      public static void main(String[] args) {
          Ping p = new Ping();
          for (int ip = 1; ip < 255; ip++) {
              int finalIp = ip;
              new Thread(() -> p.ping(finalIp)).start();
          }
      }
      boolean ping(int i) {
          // 前缀根据自己需求调整
          String ip = "192.168.19." + i;
          String ins = "ping " + ip;
          try {
              Process p = Runtime.getRuntime().exec(ins);
              BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream(), "GBK"));
              String line = null;
              while ((line = reader.readLine()) != null) {
                  if (line.indexOf("来自") != -1) { //这里不同的cmd可能不一样
                      System.out.println(ip + " 连接成功");
                      return true;
                  }
                  if (line.indexOf("请求超时") != -1) { //这里也是
                      System.out.println(ip + " 连接失败");
                      return false;
                  }
              }
          } catch (IOException e) {
              e.printStackTrace();
          }
          return false;
      }
  }