Java使用Socket判断某服务能否连通代码实例

package com.thinkgem.wlw.modules.test.socketdemo;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.net.SocketTimeoutException;
import java.net.UnknownHostException;
/**
 * @Author zhouhe
 * @Date 2019/10/18 14:24
 */
public class SocketUtils {
  /**
   * 判断某服务能否连通
   *
   * @param host host
   * @param port port
   * @return boolean
   */
  public static boolean isRunning(String host, int port) {
    Socket sClient = null;
    try {
      SocketAddress saAdd = new InetSocketAddress(host.trim(), port);
      sClient = new Socket();
      sClient.connect(saAdd, 3000);  //设置超时 3s
    }
    catch (UnknownHostException e) {
      return false;
    }
    catch (SocketTimeoutException e) {
      return false;
    }
    catch (IOException e) {
      return false;
    }
    catch (Exception e) {
      return false;
    }
    finally {
      try {
        if (sClient != null) {
          sClient.close();
        }
      }
      catch (Exception e) {
      }
    }
    return true;
  }
}