Ubuntu - 在 Ad Hoc 网络中使用套接字连接到 PC 时出现 UnknownHostException

发布于 2024-11-01 05:45:33 字数 538 浏览 1 评论 0原文

我创建了一个 FileSystemListener 来侦听文件夹中的文件并将它们发送到指定的 IP 地址。这一切都已使用标准无线网络进行了测试，但在临时网络上运行时出现unkownhostexception。

我不确定这是否是我应该在超级用户或这里询问的问题，因为我不确定这是否是我的代码或 Ubuntu 的问题。

我可以 ping 无线网络上的另一台 PC，但通过 java 连接时不断出现上述异常。

不确定它是否有帮助，但这是我能想到的最基本的 SSCE：

import java.net.Socket;

public class ClientTester {

  public static void main(String[] args) {
        Socket s  = new Socket("192.168.0.1", 4440);
   }
}

之前有人遇到过这个问题，想看看在我交叉发布到超级用户之前这是否是一个 Java 问题。

谢谢！

原文

I have created a FileSystemListener that listens for files in a folder and sends them to a specified IP address. This has all been tested with a standard wireless network but I am getting an unkownhostexception when running it on an ad hoc network.

I was not sure if this was something I should ask on Superuser, or here, as I am not sure if it is an issue with my code or Ubuntu.

I can ping the other PC on the wireless network but I keep getting the above exception when connecting through java.

Not sure if it helps but here is the most basic SSCE I can think of:

import java.net.Socket;

public class ClientTester {

  public static void main(String[] args) {
        Socket s  = new Socket("192.168.0.1", 4440);
   }
}

Anyone come across this before, wanted to see if it was a Java issue before I cross posted in Superuser.

Thanks!

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世界和平 2024-11-08 05:45:33

为了正确编译，UnknownHostException“必须被捕获或声明为抛出”。

例如：

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class ClientTester {

    public static void main(String[] args)
        throws UnknownHostException, IOException {
        Socket s  = new Socket("192.168.0.1", 4440);
   }

}

To compile correctly, UnknownHostException "must be caught or declared to be thrown."

For example:

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class ClientTester {

    public static void main(String[] args)
        throws UnknownHostException, IOException {
        Socket s  = new Socket("192.168.0.1", 4440);
   }

}

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