为什么我无法通过android

分类：编程问答

如何解决为什么我无法通过android

虽然我可以使用pidgin登录，但我无法通过android仿真器登录到ejabberd服务器。以下是我的android代码，它尽可能少，并且包含一些已弃用的API，仅用于学习目的（我不认为过时的API是问题的一部分，但不是专家，是可以教的）。我已经尝试过this，this和许多others，但是没有解决方案的见解。

Android代码

 import androidx.appcompat.app.AppCompatActivity;
 import android.os.Bundle;
 import android.os.AsyncTask;
 import android.os.Bundle;
 //import android.support.v7.app.AppCompatActivity;
 import android.util.Log;

 import org.jivesoftware.smack.AbstractXMPPConnection;
 import org.jivesoftware.smack.ConnectionConfiguration;
 import org.jivesoftware.smack.MessageListener;
 import org.jivesoftware.smack.chat.Chat;
 import org.jivesoftware.smack.chat.ChatManager;
 import org.jivesoftware.smack.chat.ChatManagerListener;
 import org.jivesoftware.smack.chat.ChatMessageListener;
 import org.jivesoftware.smack.packet.Message;
 import org.jivesoftware.smack.tcp.XMPPTCPConnection;
 import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;
 import org.jxmpp.stringprep.XmppStringprepException;
 import org.minidns.dnsserverlookup.android21.AndroidUsingLinkProperties;

 import java.net.InetAddress;
 import java.net.UnknownHostException;

 public class MainActivity extends AppCompatActivity {

     //InetAddress addr = InetAddress.getByName("127.0.0.1");

     public MainActivity() throws UnknownHostException {
     }

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         MyLoginTask task = new MyLoginTask();
         task.execute("");
     }


     private class MyLoginTask extends AsyncTask<String,String,String> {


         @Override
         protected String doInBackground(String... params) {
             // Create a connection to the jabber.org server.
             XMPPTCPConnectionConfiguration config = null;
             try {
            //try {

            //AndroidUsingLinkProperties.setup(getApplicationContext());
                     config = XMPPTCPConnectionConfiguration.builder()
                              .setUsernameAndPassword("cray","1234")
                            //.setServiceName()
                            //.setHost("192.168.0.104")
                             .setHost("10.0.2.2")
                             .setXmppDomain("localhost")
                           //.setHost("localhost")
                                 //.setHostAddress(InetAddress.getByName("localhost"))
                        
 .setSecurityMode(ConnectionConfiguration.SecurityMode.disabled)
                            //.setServiceName("localhost")
                             .setPort(5280)
                           //.setDebuggerEnabled(true) // to view what's happening in detail
                        .build();
                 //} catch (UnknownHostException e) {
                //    e.printStackTrace();
                //}
             } catch (XmppStringprepException e) {
                 //e.printStackTrace();
               Log.e("XMMP_APP","Exception",e);
            }

             AbstractXMPPConnection conn1 = new XMPPTCPConnection(config);
             try {
                 conn1.connect();
                 if(conn1.isConnected())
                {
                     Log.w("app","------connetion successful-------");
                 }
                 conn1.login();
                 if(conn1.isAuthenticated())
                 {
                     Log.w("app","Auth done");
                     ChatManager chatManager =     ChatManager.getInstanceFor(conn1);
                     chatManager.addChatListener(
                             new ChatManagerListener() {
                                 @Override
                                 public void chatCreated(Chat chat,boolean createdLocally)
                                {

                                    chat.addMessageListener(new ChatMessageListener()
                                    {
                                         @Override
                                         public void processMessage(Chat chat,Message message) {
                                             System.out.println("Received message: "
                                                + (message != null ? message.getBody() : "NULL"));

                                    }


                                });

                                Log.w("app",chat.toString());
                            }
                        });

                 }
             }
             catch (Exception e) {
                 //Log.w("app",e.toString());
                 Log.e("XMMP_APP",e);
             }

             return "";
         }


         @Override
         protected void onPostExecute(String result) {
        // execution of result of Long time consuming operation
         }

    }
 }

我尝试确认用户是否使用 ejabberdctl connected_user_number 或仅使用 ejabberdctl connected_user 登录了ejabberd服务器，但是我看不到任何用户登录使用pidgin客户端轻松登录。

这是错误（堆栈跟踪）

  08-23 11:57:10.981 2681-2681/? I/art: Not late-enabling -Xcheck:jni (already on)
 08-23 11:57:11.002 2681-2687/? E/art: Failed writing handshake bytes (-1 of 14): Broken pipe
 08-23 11:57:11.002 2681-2687/? I/art: Debugger is no longer active
08-23 11:57:11.002 2681-2681/? W/System: ClassLoader referenced unknown path: /data/app/com.comcast.redfire-1/lib/x86
08-23 11:57:11.067 2681-2681/? W/art: Before Android 4.1,method android.graphics.PorterDuffColorFilter   androidx.vectordrawable.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter,android.content.res.ColorStateList,android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
08-23 11:57:13.853 2681-2681/com.comcast.redfire I/art: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$2>
08-23 11:57:13.853 2681-2681/com.comcast.redfire I/art: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$2>
08-23 11:57:14.052 2681-2704/com.comcast.redfire D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
08-23 11:57:14.093 2681-2704/com.comcast.redfire I/OpenGLRenderer: Initialized EGL,version 1.4
08-23 11:57:14.095 2681-2704/com.comcast.redfire W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED,retrying without...
08-23 11:57:14.292 2681-2704/com.comcast.redfire D/EGL_emulation: eglCreateContext: 0xb405abc0: maj 2 min 0 rcv 2
08-23 11:57:14.307 2681-2704/com.comcast.redfire D/EGL_emulation: eglMakeCurrent: 0xb405abc0: ver 2 0 (tinfo 0xaff49510)
08-23 11:57:14.424 2681-2704/com.comcast.redfire D/EGL_emulation: eglMakeCurrent: 0xb405abc0: ver 2 0 (tinfo 0xaff49510)
08-23 11:57:30.872 2681-2703/com.comcast.redfire W/app: org.jivesoftware.smack.SmackException$ConnectionException: The following addresses failed: '10.0.2.2:5222' failed because: org.minidns.util.MultipleIoException: null,failed to connect to /10.0.2.3 (port 53) after 5000ms: isConnected failed: ECONNREFUSED (Connection refused),null,failed to connect to /8.8.8.8 (port 53) after 5000ms: isConnected failed: ENETUNREACH (Network is unreachable),sendto failed: ENETUNREACH (Network is unreachable),failed to connect to /2001:4860:4860::8888 (port 53) after 5000ms: connect failed: ENETUNREACH (Network is unreachable),failed to connect to g.root-servers.net/192.112.36.4 (port 53) after 5000ms: isConnected failed: ENETUNREACH (Network is unreachable),failed to connect to i.root-servers.net/2001:7fe::53 (port 53) after 5000ms: connect failed: ENETUNREACH (Network is unreachable)

有人可以帮我解决这个难题吗？谢谢您的时间和关注。很抱歉，格式不正确且信息不完整。

我认为问题出在10.0.2.2。由于我使用的是Android模拟器，因此建议不要使用127.0.0.1，而应使用10.0.2.2。如您所见，10.0.2.2不会发送回数据包。如何解决此问题？

解决方法

很可能您没有有效的DNS设置。我强烈建议您将ejabberd安装在具有正确网络设置并且最重要的是域+有效证书的服务器上。

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