Question

我最初是使用Java main方法为Android应用程序运行服务器，但由于Android Studio而被迫通过Android主要活动运行它。在尝试从主活动运行它时，我遇到了绑定到指定端口的问题。当我尝试连接我的客户端（我知道工作正常）时，它返回连接拒绝错误，指示我的服务器实际上没有在指定端口上侦听。这是我的服务器和主要活动。我相信在设置它时我的语法一定存在一些小问题。

public class Server extends Thread {
ServerSocket serverSocket = null;
final Reactor reactor = new Reactor();
int port;
boolean running;

Server(int p) throws  IOException {
    running = true;
    port = p;
}


@Override
public void run() {
    try {
        serverSocket = new ServerSocket(port);
    } catch (IOException e) {
        e.printStackTrace();
    }
    while (running == true) {

        try {

            System.out.println("Connecting");
            System.out.println("Server running on port: " + port);

            Socket listener = serverSocket.accept();


        } catch (IOException e) {
            e.printStackTrace();
            running = false;
        }
    }
}
}

这是我的mainActivity，用于启动侦听指定端口的服务器线程

public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Server server = null;
    try {
        server = new Server(4600);
    } catch (IOException e) {
        e.printStackTrace();
    }
    server.start();

}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}
}

这是来自客户端的堆栈跟踪

  02-14 17:42:56.109    1314-1364/edu.carleton.l8client W/System.err﹕    j       java.net.UnknownHostException: Unable to resolve host "172.17.201.280": No address associated with hostname
 02-14 17:42:56.109    1314-1364/edu.carleton.l8client W/System.err﹕ at     java.net.InetAddress.lookupHostByName(InetAddress.java:424)
 02-14 17:42:56.117    1314-1364/edu.carleton.l8client W/System.err﹕ at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
 02-14 17:42:56.117    1314-1364/edu.carleton.l8client W/System.err﹕ at java.net.InetAddress.getAllByName(InetAddress.java:214)
02-14 17:42:56.117    1314-1364/edu.carleton.l8client W/System.err﹕ at java.net.Socket.tryAllAddresses(Socket.java:108)
 02-14 17:42:56.117    1314-1364/edu.carleton.l8client W/System.err﹕ at java.net.Socket.<init>(Socket.java:177)
 02-14 17:42:56.127    1314-1364/edu.carleton.l8client W/System.err﹕ at java.net.Socket.<init>(Socket.java:149)
  02-14 17:42:56.127    1314-1364/edu.carleton.l8client W/System.err﹕ at edu.carleton.l8client.Client.run(Client.java:99)
  02-14 17:42:56.127    1314-1364/edu.carleton.l8client W/System.err﹕ Caused by: libcore.io.GaiException: getaddrinfo failed: EAI_NODATA (No address associated with hostname)
  02-14 17:42:56.137    1314-1364/edu.carleton.l8client W/System.err﹕ at libcore.io.Posix.getaddrinfo(Native Method)
  02-14 17:42:56.137    1314-1364/edu.carleton.l8client W/System.err﹕ at libcore.io.ForwardingOs.getaddrinfo(ForwardingOs.java:55)
   02-14 17:42:56.147    1314-1364/edu.carleton.l8client W/System.err﹕ at java.net.InetAddress.lookupHostByName(InetAddress.java:405)

Answer 1

172.17.201.280不是有效的IP地址，因此它将其解释为主机名。

尝试范围0.0.0.0 - 255.255.255.255

（280> 255）

无法解析主机名的IP地址

1 个答案: