-1
Ich benutze Android Asyntask mit Pycharm (Python mit Kolben) Server und es wird ein Array zurückgeben. Wenn ich versuchte, mich mit dem Server zu verbinden, wird die Verbindung abgelehnt. Ich brauche die Lösung, warum es den Fehler wie Verbindung abgelehnt zeigt.verursacht durch: android.system.ErrnoException: isConnected fehlgeschlagen: ECONNREFUSED (Verbindung abgelehnt)
Android Code:
public static String ip = "http://192.168.43.221:3000/";
private class BackTask extends AsyncTask<String, String, String> {
private String result = null,name,batch,id,dept,dob,phno,add,credits;
@Override
protected String doInBackground(String... params) {
try {
String data = URLEncoder.encode("device", "UTF-8") + "=" +
URLEncoder.encode(device, "UTF-8") + "&" +
URLEncoder.encode("ID", "UTF-8") + "=" +
URLEncoder.encode(regno1, "UTF-8") + "&" +
URLEncoder.encode("Password", "UTF-8") + "=" +
URLEncoder.encode(password1, "UTF-8");
BufferedReader reader = null;
Log.d("checking", data);
try {
URL url = new URL(ip + "login/");
URLConnection con = url.openConnection();
con.setDoOutput(true);
OutputStreamWriter writer = new OutputStreamWriter(con.getOutputStream());
writer.write(data);
writer.flush();
//getting response back
reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
Toast.makeText(getBaseContext(),reader.readLine(),Toast.LENGTH_LONG).show();
StringBuilder s = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
s.append(line + "\n");
}
result = s.toString();
} catch (Exception e) {
// Toast.makeText(getBaseContext(),"Connection error",Toast.LENGTH_LONG).show();
e.printStackTrace();
}
} catch (UnsupportedEncodingException e) {
Toast.makeText(getBaseContext(),"Connection error",Toast.LENGTH_LONG).show();
e.printStackTrace();
}
return result;
}
@Override
protected void onPostExecute(String result) {
Toast.makeText(getBaseContext(), result, Toast.LENGTH_LONG).show();
SharedPreferences.Editor e = sp1.edit();
if(!sp1.equals(null))
{
e.putString("uname", regno1);
e.putString("pass", password1);
e.apply();
}
// progress.dismiss();
//notification.setText(result);
if (result != null) {
Toast.makeText(getBaseContext(), result, Toast.LENGTH_SHORT).show();
result = result.trim();
name= setDetails(result);
if (name.equals("success")) {
Intent intent1 = new Intent(LoginActivity.this, HrActivity.class);
//intent.putExtra("json",result);
startActivity(intent);
} else {
errormsg.setText("*Check id/password");
}
}
}
@Override
protected void onPreExecute() {
progress.show();
}
@Override
protected void onProgressUpdate(String... text) {
// progress. For example updating ProgessDialog
}
Logcat:
03-12 13:52:48.194 23394-23527/com.example.dinesh.eis W/System.err: at libcore.io.IoBridge.isConnected(IoBridge.java:267)
03-12 13:52:48.194 23394-23527/com.example.dinesh.eis W/System.err: at libcore.io.IoBridge.connectErrno(IoBridge.java:191)
03-12 13:52:48.194 23394-23527/com.example.dinesh.eis W/System.err: at libcore.io.IoBridge.connect(IoBridge.java:127)
03-12 13:52:48.194 23394-23527/com.example.dinesh.eis W/System.err: at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:188)
03-12 13:52:48.194 23394-23527/com.example.dinesh.eis W/System.err: at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:461)
03-12 13:52:48.194 23394-23527/com.example.dinesh.eis W/System.err: at java.net.Socket.connect(Socket.java:918)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at com.android.okhttp.internal.Platform.connectSocket(Platform.java:174)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at com.android.okhttp.Connection.connect(Connection.java:152)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:282)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:216)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:391)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:106)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:217)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at com.example.dinesh.eis.LoginActivity$BackTask.doInBackground(LoginActivity.java:121)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at com.example.dinesh.eis.LoginActivity$BackTask.doInBackground(LoginActivity.java:101)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:292)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
03-12 13:52:48.195 23394-23527/com.example.dinesh.eis W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
03-12 13:52:48.197 23394-23527/com.example.dinesh.eis W/System.err: at java.lang.Thread.run(Thread.java:818)
03-12 13:52:48.197 23394-23527/com.example.dinesh.eis W/System.err: Caused by: android.system.ErrnoException: isConnected failed: ECONNREFUSED (Connection refused)
03-12 13:52:48.198 23394-23527/com.example.dinesh.eis W/System.err: at libcore.io.IoBridge.isConnected(IoBridge.java:252)
03-12 13:52:48.198 23394-23527/com.example.dinesh.eis W/System.err: ... 20 more