java.net.ConnectException：无法连接到/192.xxx.x.51（端口8080）：连接失败：ECONNREFUSED（连接被拒绝）

Question

嗨，我是Android新手，我将以形式发送一些文字    使用套接字从一个Android应用程序吐司到另一个，这里我安装两个    应用程序在不同的Android设备，我通过编辑文本配置IP    从消息接收器应用程序，当我通过change_URL按钮吐司    消息必须显示在另一个应用程序，当我尝试我得到日志
   （连接失败：ECONNREFUSED（连接拒绝））和.....我需要帮助
   如果有人已经尝试过这个。

- ＆gt;类Server_test_send

`public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_sender_main_);
    text = (TextView) findViewById(R.id.msg_view);
    updateConversationHandler = new Handler();
    // this.serverThread = new Thread(new ServerThread());
    //this.serverThread.start();
    testBtn = (Button) findViewById(R.id.TestBtn);
    urlbtn = (Button) findViewById(R.id.changeurl);
    changeurl = new Dialog(this);
    changeurl.requestWindowFeature(Window.FEATURE_NO_TITLE);
    changeurl.setContentView(R.layout.changeurl);
    okbt = (Button) changeurl.findViewById(R.id.okbt);
    utlet = (AutoCompleteTextView) changeurl.findViewById(R.id.urlet);
    urlbtn.setOnClickListener(new View.OnClickListener() {

 @Override
   public void onClick(View v) {
   changeurl.show();
        }
    });
    okbt.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            path = utlet.getText().toString();
            SharedPreferences sp = getSharedPreferences(
                    "doorcameraurlsas",
                    Activity.MODE_PRIVATE);
            SharedPreferences.Editor editor = sp
                    .edit();
            editor.putString("doorcameraurlsas", path);
            editor.commit();
            new SendText().execute(path);
            changeurl.dismiss();
        }
    });
    testBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        }
    });
  }
 public class SendText extends AsyncTask<String, Void, Void> {
    @Override
    protected Void doInBackground(String... strings) {
        try {
            String url = strings[0];
            client = new Socket(url, 8080); 
            printwriter = new PrintWriter(client.getOutputStream(), true);
            printwriter.write("Message from other app"); 
            printwriter.flush();
            printwriter.close();
            client.close(); 
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
      }
      }
     }

 Another Class

 public class MainActivity_Receiver extends Activity  implements          
View.OnClickListener{
private String off;
private Switch enbmode;
private Socket socket;
private static final int SERVERPORT = 8080;
private static final String SERVER_IP = "192.168.1.60";
ServerSocket serverSocket;
private static Socket clientSocket;
private static InputStreamReader inputStreamReader;
private static BufferedReader bufferedReader;
private static String message;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    new Thread(new ClientThread()).start();
}
public void onClick(View view) {
    try {
        enbmode = (Switch) findViewById(R.id.switch1);
        String str = enbmode.getText().toString();
        PrintWriter out = new PrintWriter(new BufferedWriter(
                new OutputStreamWriter(socket.getOutputStream())),
                true);
        out.println(str);
    } catch (UnknownHostException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    }
    try {
        serverSocket = new ServerSocket(8080); // Server socket
    } catch (IOException e) {
        Log.i(" PortID","Could not find the port:4444");
    }
     Log.i("ServerStarted"," with port id :4444");

    while (true) {
        try {
            clientSocket = serverSocket.accept(); 
            inputStreamReader = new  
      InputStreamReader(clientSocket.getInputStream());
            bufferedReader = new BufferedReader(inputStreamReader); 
            message = bufferedReader.readLine();
            Toast.makeText(getApplicationContext(),"The Massage from   
          client "+message,Toast.LENGTH_LONG).show();
            Log.d("Message ", " From server "+message);
            inputStreamReader.close();
            clientSocket.close();

        } catch (IOException ex) {
            Log.i("Problem","Problem in message reading");
        }
    }
  }
   class ClientThread implements Runnable {
    @Override
    public void run() {
        try {
            InetAddress serverAddr = InetAddress.getByName(SERVER_IP);
            socket = new Socket(serverAddr, SERVERPORT);
        } catch (UnknownHostException e1) {
            e1.printStackTrace();
        } catch (IOException e1) {
            e1.printStackTrace();
        }

      }

    }
     }

`

Answer 1

如果连接被拒绝，则表示已到达目标主机，但拒绝接受连接。

在标准情况下，这意味着没有套接字正在侦听指定的端口。