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Я написал программу и подключил ее к mysql. я написал класс веб-службы и с помощью клиента HTTP, но у меня есть ошибки во время выполнения, пожалуйста, проверьте мой код:Ошибка: при подключении к WebService
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class WebService {
public static String readUrl(String url) {
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
try {
HttpResponse httpResponse = httpClient.execute(httpPost);
InputStream inputStream = httpResponse.getEntity().getContent();
String result = convertInputStreamToString(inputStream);
return result;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
private static String convertInputStreamToString(InputStream inputStream) {
try {
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder stringBuilder = new StringBuilder();
String line = "";
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line);
}
return stringBuilder.toString();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
String result = WebService.readUrl("http://localhost/note-server/");
if (result != null) {
try {
JSONArray tasks = new JSONArray(result);
for(int i=0;i<tasks.length();i++){
JSONObject task=tasks.getJSONObject(i);
Log.i("L",task.getString("task tilte"));
}
} catch (JSONException e) {
e.printStackTrace();
}
}
и вот код ошибки, что у меня есть:
at com.example.parisa.noteapplication.WebService.read Url(WebService.java:26)
at com.example.parisa.noteapplication.MainActivity.on Create(MainActivity.java:47)
FATAL EXCEPTION: main
Process: com.example.parisa.noteapplication, PID: 29346
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.parisa.noteapplication/com.example.parisa.noteapplication.MainActivity}: android.os.NetworkOnMainThreadException
at android.app.ActivityThread.performLaunchActivity(A ctivityThread.java:2462)
и здесь
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
String result = WebService.readUrl("http://localhost/note-server/");
if (result != null) {
try {
JSONArray tasks = new JSONArray(result);
for(int i=0;i<tasks.length();i++){
JSONObject task=tasks.getJSONObject(i);
Log.i("L",task.getString("task tilte"));
}
} catch (JSONException e) {
e.printStackTrace();
}
}
Вы получаете NetworkOnMainThreadException см [Как исправить android.os.NetworkOnMainThreadException?] (Http://stackoverflow.com/questions/6343166/how-to-fix-android-os- networkonmainthreadexception) – peko
Добавить websevice в отдельной теме. Класс пользователя AsyncTask для этого –