Я пытаюсь отправить местоположение (широта, долгота) пользователя android в базу данных MySQL с HTTP-сообщениями, но при запуске программы получаю следующие ошибки:
W/System.err: После:
Ошибки:
Ошибка E/Buffer: результат преобразования ошибки java.lang.NullPointerException
E/JSON Parser: Ошибка анализа данных org.json.JSONException: Конец ввода с символом 0
Logcat:
Logcat после изменения "localhost" на мой IP-адрес
Logcat после изменения "localhost" на мой IP-адрес
05-15 21: 03: 52.905 28777-28777/? E/Zygote: isWhitelistProcess - процесс белый
05-15 21: 03: 52.906 28777-28777/? E/libpersona: scanKnoxPersonas
Не удалось открыть файл -/data/system/users/0/personalist.xml - нет такого файла или каталога
Основная деятельность:
import android.os.StrictMode;
import android.util.Log;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import android.Manifest;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import com.indooratlas.android.sdk.IALocation;
import com.indooratlas.android.sdk.IALocationListener;
import com.indooratlas.android.sdk.IALocationManager;
import com.indooratlas.android.sdk.IALocationRequest;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
JSONParser jsonParser = new JSONParser();
IALocationManager mLocationManager;
IALocationListener mLocationListener = new IALocationListener() {
@Override
public void onLocationChanged(IALocation iaLocation) {
TextView txtLoc = (TextView) findViewById(R.id.textView);
txtLoc.setText(String.valueOf(iaLocation.getLongitude() + ", " +
iaLocation.getLatitude()));
// build HTTP POST request to send these data to the database
List<NameValuePair> params = new ArrayList<NameValuePair>();
String deviceId = "1";
params.add(new BasicNameValuePair("deviceId", deviceId));
System.out.println("DEVICE ID " + deviceId);
params.add(new BasicNameValuePair("latitude",
Double.toString(iaLocation.getLongitude())));
System.out.println("Latitude + " + iaLocation.getLongitude());
params.add(new BasicNameValuePair("longitude",
Double.toString(iaLocation.getLatitude())));
System.out.println("Longitude+ " + iaLocation.getLatitude());
jsonParser.makeHttpRequest("http://localhost/android_connect/update11.php",
"POST", params);
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
};
private final int CODE_PERMISSIONS = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView txtLoc = (TextView) findViewById(R.id.textView);
mLocationManager = IALocationManager.create(this);
String[] neededPermissions = {
Manifest.permission.CHANGE_WIFI_STATE,
Manifest.permission.ACCESS_WIFI_STATE,
Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.BLUETOOTH,
Manifest.permission.BLUETOOTH_ADMIN
};
ActivityCompat.requestPermissions(this, neededPermissions,
CODE_PERMISSIONS);
StrictMode.ThreadPolicy policy = new
StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
public void onRequestPermissionsResult(int requestCode, String[]
permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions,
grantResults);
//Handle if any of the permissions are denied, in grantResults
}
protected void onResume() {
super.onResume();
mLocationManager.requestLocationUpdates(IALocationRequest.create(),
mLocationListener);
}
protected void onPause() {
mLocationManager.removeLocationUpdates(mLocationListener);
super.onPause();
}
protected void onDestroy() {
mLocationManager.destroy();
super.onDestroy();
}
}
ANDROID_MANIFEST:
<?xml version="1.0" encoding="utf-8"?>
<uses-feature android:name="android.hardware.sensor.accelerometer"
android:required="true" />
<uses-feature android:name="android.hardware.sensor.compass"
android:required="true" />
<uses-feature android:name="android.hardware.sensor.gyroscope"
android:required="true" />
<uses-feature android:name="android.hardware.wifi"
android:required="true" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="IndoorAtlasExample"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<meta-data
android:name="com.indooratlas.android.sdk.API_KEY"
android:value="<API key here>"/>
<meta-data android:name="com.indooratlas.android.sdk.API_SECRET"
android:value="<API secret here>"/>
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
JSONParser:
import android.util.Log;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.List;
/**
* Used to submit new IndoorAtlas readings to the MySQL server via JSON on
the phone (this
* class) & PHP on the Web server.
*/
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
// function get json from url
// by making HTTP POST or GET mehtod
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
// Making HTTP request
try {
// check for request method
if(method == "POST"){
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}else if(method == "GET"){
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
PHP-код для обновления и вставки в базу данных MySQL:
<?php
/*
All product details are read from HTTP Post Request
*/
// error_reporting(E_ALL & ~E_DEPRECATED & ~E_NOTICE);
// error_reporting(E_ERROR | E_PARSE);
if ($_SERVER ["REQUEST_METHOD"]=="POST"){
require'connectiontest.php';
createStudent();
}
// array for JSON response
$response = array();
function createstudent()
{
// check for required fields
if (isset($_POST['deviceId']) && isset($_POST['latitude']) &&
isset($_POST['longitude'])) {
// extract data from POST into variables
global $connect;
$deviceId = $_POST['deviceId'];
$latitude = $_POST['latitude'];
$longitude = $_POST['longitude'];
// $time = $_POST['time'];
$query = "SELECT * FROM cord WHERE deviceId = '$deviceId';";
$result=mysqli_query($connect,$query);
$count=mysqli_num_rows($result);
if($count>0)
{error_log("Database already has that deviceId, doing an UPDATE.", 0);
$query = "UPDATE cord SET latitude = '$latitude', longitude =
'$longitude' WHERE deviceId = '$deviceId';";
}
else{
error_log("Database is empty, doing an INSERT.", 0);
$query = "INSERT INTO cord (deviceId, latitude, longitude) VALUES
('$deviceId', '$latitude', '$longitude');";
}
mysqli_query($connect, $query) or die (mysqli_error($connect));
mysqli_close($connect);
// check if row inserted or not
if ($query) {
// successfully inserted into database
$response["success"] = 1;
$response["message"] = "Entry successfully inserted or updated.";
// echoing JSON response
echo json_encode($response);
} else {
// failed to insert row
$response["success"] = 0;
$response["message"] = "Entry was not successfully inserted or
updated.";
// echoing JSON response
echo json_encode($response);
}
} else {
// required field is missing
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";
// echoing JSON response
echo json_encode($response);
}
}
?>
если ваш сервер по-прежнему локально, вы должны использовать ip-адрес вместо localhost, например:
jsonParser.makeHttpRequest("http://192.168.1.4/android_connect/update11.php",
"POST", params);
}
note: измените 192.168.1.4 на свой локальный IP-адрес и убедитесь, что ваш телефон и компьютер подключены к одной сети.
ваш хост php-сервера на вашем компьютере? Если это так, вы должны использовать это
поэтому вы создадите туннель для своего серверного приложения. ваша внешняя машина не является "локальным" хостом для вашего приложения для Android
org.apache.http
устарело, вот класс JSONParser, обновленный для использования HttpURLConnection: stackoverflow.com/questions/33030660/…