Java——ping & telnet实现

ping & telnet 实现类：

import org.springframework.data.web.JsonPath;

import java.io.IOException;
import java.net.*;

public class PTUtil {
    /***
     *  ping操作
     * @param hostname
     * @param timeout in milliseconds
     * @return
     */
    public static JsonResult pingResult(String hostname,Integer timeout){
        JsonResult jsonResult = new JsonResult();
        try {
            InetAddress address = InetAddress.getByName(hostname);
            boolean flag = address.isReachable(timeout);
            if(flag){
                jsonResult.setMessage("ping结果:the address is reachable.");
            }else{
                jsonResult.setCode(Constants.ResultCode.EXCEPTION);
                jsonResult.setMessage("ping结果:the address is unreachable.");
            }
        } catch (UnknownHostException e) {
            jsonResult.setCode(Constants.ResultCode.EXCEPTION);
            jsonResult.setMessage("ping结果:UnknownHostException:"+e.getMessage());
        } catch (IOException e) {
            jsonResult.setCode(Constants.ResultCode.EXCEPTION);
            jsonResult.setMessage("ping结果:IOException:"+e.getMessage());
        }
        return jsonResult;
    }
    /***
     *  telnet 操作
     * @param hostname
     * @param timeout in milliseconds
     * @return
     */
    public static JsonResult telnetResult(String hostname,Integer port,Integer timeout){
        JsonResult jsonResult = new JsonResult();
        try {
            Socket server = new Socket();
            InetSocketAddress address = new InetSocketAddress(hostname,port);
            server.connect(address, timeout);
            server.close();
            jsonResult.setMessage("telnet结果:success!");
        }catch (UnknownHostException e) {
            jsonResult.setCode(Constants.ResultCode.EXCEPTION);
            jsonResult.setMessage("telnet结果:UnknownHostException:"+e.getMessage());
        } catch (IOException e) {
            jsonResult.setCode(Constants.ResultCode.EXCEPTION);
            jsonResult.setMessage("telnet结果:IOException:"+e.getMessage());
        }
        return jsonResult;
    } 
}

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