Ich arbeite an einem Android Studio-Projekt mit mehreren Aktivitäten. Ich versuche derzeit, die Ausgabe eines Java-Servlets auf localhost zu lesen, aber es scheint aufgrund einer Socket-Berechtigung abzustürzen.
Ich habe ein neues Projekt erstellt, genau den gleichen Code verwendet und perfekt funktioniert. Ich verstehe also nicht, warum ich nicht bereit bin, an meinem Projekt zu arbeiten.
public class LoginActivity extends AppCompatActivity {
String apiUrl = "http://10.0.2.2:8080/ProyectService/Servlet?action=login";
EditText username;
EditText password;
AlertDialog dialog;
Usuario session;
@Override
public void onCreate(Bundle savedInstanceState) {
// Inicializacion de ventana
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
getSupportActionBar().hide();
// Inicializacion de componentes
username = findViewById(R.id.username);
password = findViewById(R.id.password);
// Inicializacion de funcionalidad de botones
Button button= (Button) findViewById(R.id.login);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
UserLoginTask mAuthTask = new UserLoginTask();
mAuthTask.execute();
}
});
password = findViewById(R.id.password);
createAlertDialog("Usuario o Contraseña Incorrectos");
}
private void createAlertDialog(String message){
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(message)
.setTitle("Error");
dialog = builder.create();
}
// ASYNCRONUS NETWORK PROCESS
public class UserLoginTask extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
}
@Override
protected String doInBackground(String... params) {
// implement API in background and store the response in current variable
String current = "";
try {
URL url;
HttpURLConnection urlConnection = null;
try {
url = new URL(apiUrl);
System.out.println(apiUrl);
urlConnection = (HttpURLConnection) url
.openConnection();
InputStream in = urlConnection.getInputStream();
InputStreamReader isw = new InputStreamReader(in);
int data = isw.read();
while (data != -1) {
current += (char) data;
data = isw.read();
//System.out.print(current);
}
System.out.print(current);
// return the data to onPostExecute method
return current;
} catch (Exception e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
} catch (Exception e) {
e.printStackTrace();
return "Exception: " + e.getMessage();
}
return current;
}
}
protected void onPostExecute(String success) {
Log.i(success, "");
//attemptLogin();
}
}
Ich erwarte, dass es die Daten liest, aber es stürzt in dieser Zeile ab:
InputStream in = urlConnection.getInputStream();
Dies ist die Fehlerausgabe:
java.net.SocketException: socket failed: EPERM (Operation not permitted)
at java.net.Socket.createImpl(Socket.java:492)
at java.net.Socket.getImpl(Socket.java:552)
at java.net.Socket.setSoTimeout(Socket.java:1180)
at com.android.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:143)
at com.android.okhttp.internal.io.RealConnection.connect(RealConnection.java:116)
at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:186)
at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:128)
at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:97)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:289)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:232)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:465)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:248)
at com.example.controller.LoginActivity$UserLoginTask.doInBackground(LoginActivity.java:114)
at com.example.controller.LoginActivity$UserLoginTask.doInBackground(LoginActivity.java:93)
at android.os.AsyncTask$3.call(AsyncTask.java:378)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:289)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)