对不起我的英语不好。
我想在 Android 中编写一个本机应用程序来连接服务器以进行交互式通信。Websocket 技术是完美的。我已经在我的笔记本电脑上安装并运行了 Tomcat 7.0.39，IP 为 192.168.1.250。我已经尝试了示例 echo、snake 等，使用 ws://localhost:8080/.... 和使用 ws://192.168.1.250:8080/...
我正在使用带有 eclipse 的高速公路连接到我的服务器。我已经在我的 Android 手机中安装了带有高速公路客户端 websocket 示例的 apk，它与 ws://echo.websocket.org 完美连接。
问题是从 android 到我的服务器（在我的笔记本电脑中）不起作用。从 android 到 ws://echo.websocket.org 运行良好（我认为高速公路示例运行良好），我的服务器运行良好，因为 de 示例附带 tomcat 运行良好。
因为我必须对在服务器和客户端之间传输的信息进行深入的工作，所以我不能在服务器端使用 javascript，我需要 java servlet 或其他人来处理数据库、文件等等。
怎么了？防火墙已关闭，wireshark 向我展示了 android 客户端如何尝试连接到我的笔记本电脑服务器（我不太了解 wireshark 信息）但连接丢失。
这是我的安卓代码：
package com.example.autobahnandroiddemo;
import de.tavendo.autobahn.WebSocketConnection;
import de.tavendo.autobahn.WebSocketException;
import de.tavendo.autobahn.WebSocketHandler;
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
static final String TAG = "de.tavendo.autobahn.echo";
private static final String PREFS_NAME = "AutobahnAndroidEcho";
static EditText mHostname;
static EditText mPort;
static TextView mStatusline;
static Button mStart;
static EditText mMessage;
static Button mSendMessage;
private SharedPreferences mSettings;
private void alert(String message) {
Toast toast = Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
}
private void loadPrefs() {
mHostname.setText(mSettings.getString("hostname", ""));
mPort.setText(mSettings.getString("port", "9000"));
}
private void savePrefs() {
SharedPreferences.Editor editor = mSettings.edit();
editor.putString("hostname", mHostname.getText().toString());
editor.putString("port", mPort.getText().toString());
editor.commit();
}
private void setButtonConnect() {
mHostname.setEnabled(true);
mPort.setEnabled(true);
mStart.setText("Connect");
mStart.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
start();
}
});
}
private void setButtonDisconnect() {
mHostname.setEnabled(false);
mPort.setEnabled(false);
mStart.setText("Disconnect");
mStart.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
mConnection.disconnect();
}
});
}
private final WebSocketConnection mConnection = new WebSocketConnection();
private void start() {
final String wsuri = mHostname.getText() + ":" + mPort.getText();
mStatusline.setText("Status: Connecting to " + wsuri + " ..");
setButtonDisconnect();
try {
mConnection.connect(wsuri, new WebSocketHandler() {
@Override
public void onOpen() {
mStatusline.setText("Status: Connected to " + wsuri);
savePrefs();
mSendMessage.setEnabled(true);
mMessage.setEnabled(true);
}
@Override
public void onTextMessage(String payload) {
alert("Got echo: " + payload);
}
@Override
public void onClose(int code, String reason) {
alert("Connection lost.");
mStatusline.setText("Status: Ready.");
setButtonConnect();
mSendMessage.setEnabled(false);
mMessage.setEnabled(false);
}
});
} catch (WebSocketException e) {
Log.d(TAG, e.toString());
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mHostname = (EditText) findViewById(R.id.hostname);
mPort = (EditText) findViewById(R.id.port);
mStatusline = (TextView) findViewById(R.id.statusline);
mStart = (Button) findViewById(R.id.start);
mMessage = (EditText) findViewById(R.id.msg);
mSendMessage = (Button) findViewById(R.id.sendMsg);
mSettings = getSharedPreferences(PREFS_NAME, 0);
loadPrefs();
setButtonConnect();
mSendMessage.setEnabled(false);
mMessage.setEnabled(false);
mSendMessage.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
mConnection.sendTextMessage(mMessage.getText().toString());
}
});
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mConnection.isConnected()) {
mConnection.disconnect();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.quit:
finish();
break;
default:
return super.onOptionsItemSelected(item);
}
return true;
}
}
这是我的 SERVLET TOMCAT 代码：
package servlets;
import org.apache.catalina.websocket.MessageInbound;
import org.apache.catalina.websocket.StreamInbound;
import org.apache.catalina.websocket.WebSocketServlet;
import org.apache.catalina.websocket.WsOutbound;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
public class SimpleWebSocketServlet extends WebSocketServlet {
private static final long serialVersionUID = 1L;
@Override
protected StreamInbound createWebSocketInbound(String string, HttpServletRequest hsr) {
return new MessageInbound() {
@Override
protected void onBinaryMessage(ByteBuffer bb) throws IOException {
}
@Override
protected void onTextMessage(CharBuffer cb) throws IOException {
System.out.println(cb.toString());
WsOutbound outbound = getWsOutbound();
outbound.writeTextMessage(cb);
}
};
}
}
我不知道怎么了。有另一种通过websockets将android客户端与服务器（类似技术上的java servlet）结合使用的解决方案吗？谢谢