2
내 응용 프로그램에서 누락 된 내용을 알고 싶습니다. 내 Android 응용 프로그램이 사용자 이름과 암호를 HTTP POST로 보내면 PHP 파일이 해당 사용자 이름의 데이터베이스 값에서 응답합니다. 문제는 사용자 이름을 입력하고 암호 아무것도 그것도HTTP 요청 없음 HTTP 응답
MainActivity
package com.example.postapp;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.URL;
import java.net.UnknownHostException;
import java.util.ArrayList;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
TextView tv;
EditText u,p;
Button login;
String result;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
login = (Button) findViewById(R.id.login);
login.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
u = (EditText) findViewById(R.id.username);
p = (EditText) findViewById(R.id.password);
Toast.makeText(getApplicationContext(), u.getText().toString(), Toast.LENGTH_LONG).show();
Toast.makeText(getApplicationContext(), p.getText().toString(), Toast.LENGTH_LONG).show();
new MyAsyncTask().execute(u.getText().toString(),p.getText().toString());
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public class MyAsyncTask extends AsyncTask<String, Integer, Boolean>{
String host;
@Override
protected Boolean doInBackground(String... params) {
// TODO Auto-generated method stub
Boolean a= postData(params[0],params[1]);
return a;
}
protected void onPostExecute(Boolean localres){
tv = (TextView) findViewById(R.id.tv);
if (localres){
tv.setText("A Correct Username and Password");
}else{
tv.setText("Incorrect Username or Password");
}
// Toast.makeText(getApplicationContext(), result.toString(), Toast.LENGTH_SHORT).show();
// Toast.makeText(getApplicationContext(), "command sent", Toast.LENGTH_SHORT).show();
if(host!=null)
{
// Toast.makeText(getApplicationContext(), host.toString(), Toast.LENGTH_LONG).show();
}
}
protected void onProgressUpdate(Integer... progress){
//pb.setProgress(progress[0]);
//Toast.makeText(getApplicationContext(), "Done", Toast.LENGTH_LONG).show();
}
public Boolean postData(String a,String b) {
// ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
// postParameters.add(new BasicNameValuePair("username", a));
// postParameters.add(new BasicNameValuePair("password", b));
HttpURLConnection connection;
OutputStreamWriter request = null;
URL url = null;
String response = null;
String parameters = "username="+a+"&password="+b;
try
{
url = new URL("http://"+"192.168.1.3"+"/new/check2.php");
connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestMethod("POST");
request = new OutputStreamWriter(connection.getOutputStream());
request.write(parameters);
request.flush();
request.close();
String line = "";
InputStreamReader isr = new InputStreamReader(connection.getInputStream());
BufferedReader reader = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
// Response from server after login process will be stored in response variable.
response = sb.toString();
// You can perform UI operations here
Toast.makeText(getApplicationContext(),"Message from Server: \n"+ response, 0).show();
isr.close();
reader.close();
}
catch(Exception e)
{
e.printStackTrace();
}
return true;
}
}
}
PHP
<?php
$con = mysqli_connect("localhost", "root", "123", "pet_home");
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$username = $_POST['username'];
$password = $_POST['password'];
$result = mysql_query("select * from users where username='$username' and password='$password'")or die (mysql_error());
$count = mysql_num_rows($result);
$row = mysql_fetch_array($result);
if ($count > 0) {
echo $row['filter_st'];
echo "<br>";
echo $row['heat_st'];
echo "<br>";
echo $row['led_st'];
} else {
echo 0;
}
mysqli_close($con);
로그 캣 당신은 public Boolean postData(String a,String b)에서
Boolean a= postData(params[0],params[1]); // in doInbackground
이 당신이 잘못 토스트를 표시
12-13 20:57:45.534: W/System.err(14768): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
12-13 20:57:45.534: W/System.err(14768): at android.os.Handler.<init>(Handler.java:197)
12-13 20:57:45.534: W/System.err(14768): at android.os.Handler.<init>(Handler.java:111)
12-13 20:57:45.538: W/System.err(14768): at android.widget.Toast$TN.<init>(Toast.java:324)
12-13 20:57:45.538: W/System.err(14768): at android.widget.Toast.<init>(Toast.java:91)
12-13 20:57:45.538: W/System.err(14768): at android.widget.Toast.makeText(Toast.java:238)
12-13 20:57:45.538: W/System.err(14768): at com.example.postapp.MainActivity$MyAsyncTask.postData(MainActivity.java:136)
12-13 20:57:45.538: W/System.err(14768): at com.example.postapp.MainActivity$MyAsyncTask.doInBackground(MainActivity.java:76)
12-13 20:57:45.538: W/System.err(14768): at com.example.postapp.MainActivity$MyAsyncTask.doInBackground(MainActivity.java:1)
12-13 20:57:45.538: W/System.err(14768): at android.os.AsyncTask$2.call(AsyncTask.java:287)
12-13 20:57:45.538: W/System.err(14768): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
12-13 20:57:45.538: W/System.err(14768): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
12-13 20:57:45.538: W/System.err(14768): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
12-13 20:57:45.538: W/System.err(14768): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
12-13 20:57:45.538: W/System.err(14768): at java.lang.Thread.run(Thread.java:841)