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無法通過PHP連接到mysql數據庫

2013-01-15 476 views
0

最後，我完全按照這個頁面（connecting android apps to mysql database）創建一個應用程序。 更改爲10.0.2.2後，提問者終於可以連接到mysql，但我不能。 我的代碼有什麼問題？ 我可以在瀏覽器上使用localhost獲取數據 - firefox。無法通過PHP連接到mysql數據庫

幾個問題，我從目前存在的教程中得到解決的問題，但對我不起作用：

  1. 是否也應該改變PHP腳本主機10.0.2.2？
  2. 我需要添加用戶權限 <uses-permission android:name="android.permission.INTERNET"></uses-permission>
  3. 林已經在使用具有相同API=17

模擬器，這是我的PHP代碼

mysql_connect("10.0.2.2","root","password"); 
mysql_select_db("mydbname"); 
$q=mysql_query("SELECT * FROM people 
WHERE 
birthyear>'".$_REQUEST['year']."'"); 
while($e=mysql_fetch_assoc($q)) 
$output[]=$e; 
print(json_encode($output)); 
mysql_close();

我的SQL查詢

CREATE TABLE `people` (
`id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY , 
`name` VARCHAR(100) NOT NULL , 
`sex` BOOL NOT NULL DEFAULT '1', 
`birthyear` INT NOT NULL 
)

代碼在android

package com.example.peoplework; 

import java.io.BufferedReader; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.util.ArrayList; 

import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.NameValuePair; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.entity.UrlEncodedFormEntity; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.apache.http.message.BasicNameValuePair; 
import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import android.os.Bundle; 
import android.app.Activity; 
import android.util.Log; 
import android.view.Menu; 
import android.widget.TextView; 
import android.widget.Toast; 

public class Main extends Activity { 

InputStream is; 
private TextView tv; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    String result = ""; 
    //the year data to send 
    ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); 
    nameValuePairs.add(new BasicNameValuePair("year","1990")); 

    //http post 
    try{ 
      HttpClient httpclient = new DefaultHttpClient(); 
      HttpPost httppost = new HttpPost("http://10.0.2.2/index.php"); 
      httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
      HttpResponse response = httpclient.execute(httppost); 
      HttpEntity entity = response.getEntity(); 
      is = entity.getContent(); 
      Log.e("log_tag", "connection success "); 
      Toast.makeText(getApplicationContext(), "pass", Toast.LENGTH_SHORT).show(); 
    }catch(Exception e){ 
      Log.e("log_tag", "Error in http connection "+e.toString()); 
      Toast.makeText(getApplicationContext(), "fail1", Toast.LENGTH_SHORT).show(); 

    } 
    //convert response to string 
    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"); 
        Toast.makeText(getApplicationContext(), "pass", Toast.LENGTH_SHORT).show(); 
      } 
      is.close(); 

      result=sb.toString(); 
    }catch(Exception e){ 
      Log.e("log_tag", "Error converting result "+e.toString()); 
     Toast.makeText(getApplicationContext(), "fail2", Toast.LENGTH_SHORT).show(); 

    } 

    //parse json data 
    try{ 
      JSONArray jArray = new JSONArray(result); 
      for(int i=0;i<jArray.length();i++){ 
        JSONObject json_data = jArray.getJSONObject(i); 
        Log.i("log_tag","id: "+json_data.getInt("id")+ 
          ", name: "+json_data.getString("name")+ 
          ", sex: "+json_data.getInt("sex")+ 
          ", birthyear: "+json_data.getInt("birthyear") 
        ); 
        Toast.makeText(getApplicationContext(), "pass", Toast.LENGTH_SHORT).show(); 
      } 
      tv = (TextView)findViewById(R.id.get_record); 
      tv.setText(jArray.toString()); 

    }catch(JSONException e){ 
      Log.e("log_tag", "Error parsing data "+e.toString()); 
      Toast.makeText(getApplicationContext(), "fail3", Toast.LENGTH_SHORT).show(); 
    } 
} 

}

清單

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.example.peoplework" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="17" 
    android:targetSdkVersion="17" /> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name="com.example.peoplework.Main" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application>

和日誌,,錯誤加粗。

01-15 15:29:34.805: D/AndroidRuntime(1741): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 
01-15 15:29:34.805: D/AndroidRuntime(1741): CheckJNI is ON 
01-15 15:29:34.825: D/dalvikvm(1741): Trying to load lib libjavacore.so 0x0 
01-15 15:29:34.835: D/dalvikvm(1741): Added shared lib libjavacore.so 0x0 
01-15 15:29:34.845: D/dalvikvm(1741): Trying to load lib libnativehelper.so 0x0 
01-15 15:29:34.845: D/dalvikvm(1741): Added shared lib libnativehelper.so 0x0 
01-15 15:29:35.305: D/AndroidRuntime(1741): Calling main entry com.android.commands.pm.Pm 
01-15 15:29:35.315: D/AndroidRuntime(1741): Shutting down VM 
01-15 15:29:35.326: D/dalvikvm(1741): GC_CONCURRENT freed 100K, 19% free 470K/576K, paused 1ms+1ms, total 8ms 
01-15 15:29:35.326: D/dalvikvm(1741): Debugger has detached; object registry had 1 entries 
01-15 15:29:35.795: D/AndroidRuntime(1754): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 
01-15 15:29:35.795: D/AndroidRuntime(1754): CheckJNI is ON 
01-15 15:29:35.815: D/dalvikvm(1754): Trying to load lib libjavacore.so 0x0 
01-15 15:29:35.825: D/dalvikvm(1754): Added shared lib libjavacore.so 0x0 
01-15 15:29:35.835: D/dalvikvm(1754): Trying to load lib libnativehelper.so 0x0 
01-15 15:29:35.835: D/dalvikvm(1754): Added shared lib libnativehelper.so 0x0 
01-15 15:29:36.305: D/AndroidRuntime(1754): Calling main entry com.android.commands.am.Am 
01-15 15:29:36.305: D/dalvikvm(1754): Note: class Landroid/app/ActivityManagerNative; has 156 unimplemented (abstract) methods 
01-15 15:29:36.325: I/ActivityManager(263): Force stopping package com.example.peoplework appid=10047 user=-1 
01-15 15:29:36.325: I/ActivityManager(263): Killing proc 1726:com.example.peoplework/u0a10047: force stop com.example.peoplework 
01-15 15:29:36.325: W/ActivityManager(263): Force removing ActivityRecord{2c4b7b80 u0 com.example.peoplework/.Main}: app died, no saved state 
01-15 15:29:36.375: I/WindowState(263): WIN DEATH: Window{2c6ce6e8 u0 com.example.peoplework/com.example.peoplework.Main} 
01-15 15:29:36.415: I/ActivityManager(263): START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.example.peoplework/.Main} from pid 1754 
01-15 15:29:36.435: D/AndroidRuntime(1754): Shutting down VM 
01-15 15:29:36.446: D/dalvikvm(1754): GC_CONCURRENT freed 101K, 18% free 504K/608K, paused 0ms+1ms, total 8ms 
01-15 15:29:36.446: D/jdwp(1754): Got wake-up signal, bailing out of select 
01-15 15:29:36.446: D/dalvikvm(1754): Debugger has detached; object registry had 1 entries 
01-15 15:29:36.515: E/SurfaceFlinger(37): ro.sf.lcd_density must be defined as a build property 
01-15 15:29:36.526: I/Choreographer(394): Skipped 33 frames! The application may be doing too much work on its main thread. 
**01-15 15:29:36.675: E/SurfaceFlinger(37): ro.sf.lcd_density must be defined as a build property** 
01-15 15:29:36.696: D/dalvikvm(1765): Not late-enabling CheckJNI (already on) 
01-15 15:29:36.715: I/ActivityManager(263): Start proc com.example.peoplework for activity com.example.peoplework/.Main: pid=1765 uid=10047 gids={50047, 3003, 1028} 
01-15 15:29:36.725: W/InputMethodManagerService(263): Got RemoteException sending setActive(false) notification to pid 1726 uid 10047 
**01-15 15:29:36.985: E/Trace(1765): error opening trace file: No such file or directory (2)** 
01-15 15:29:37.005: W/ActivityThread(1765): Application com.example.peoplework is waiting for the debugger on port 8100... 
01-15 15:29:37.036: I/System.out(1765): Sending WAIT chunk 
01-15 15:29:37.045: I/dalvikvm(1765): Debugger is active 
01-15 15:29:37.234: I/System.out(1765): Debugger has connected 
01-15 15:29:37.234: I/System.out(1765): waiting for debugger to settle... 
01-15 15:29:37.374: I/Choreographer(263): Skipped 34 frames! The application may be doing too much work on its main thread. 
01-15 15:29:37.435: I/System.out(1765): waiting for debugger to settle... 
01-15 15:29:37.594: I/Choreographer(263): Skipped 55 frames! The application may be doing too much work on its main thread. 
01-15 15:29:37.604: E/SurfaceFlinger(37): ro.sf.lcd_density must be defined as a build property 
01-15 15:29:37.644: I/System.out(1765): waiting for debugger to settle... 
01-15 15:29:37.845: I/System.out(1765): waiting for debugger to settle... 
01-15 15:29:38.045: I/System.out(1765): waiting for debugger to settle... 
01-15 15:29:38.270: I/System.out(1765): waiting for debugger to settle... 
01-15 15:29:38.490: I/System.out(1765): waiting for debugger to settle... 
01-15 15:29:38.720: I/System.out(1765): debugger has settled (1359) 
01-15 15:29:39.845: D/dalvikvm(1765): threadid=1: still suspended after undo (sc=1 dc=1) 
01-15 15:29:46.436: W/ActivityManager(263): Launch timeout has expired, giving up wake lock! 
01-15 15:29:46.948: W/ActivityManager(263): Activity idle timeout for ActivityRecord{2c9fdd70 u0 com.example.peoplework/.Main} 
01-15 15:30:51.805: I/InputDispatcher(263): Application is not responding: AppWindowToken{2c96db20 token=Token{2c9f1af8 ActivityRecord{2c9fdd70 u0 com.example.peoplework/.Main}}}. It has been 5031.2ms since event, 5030.0ms since wait started. Reason: Waiting because there is no touchable window that can handle the event but there is focused application that may eventually add a new window when it finishes starting up. 
01-15 15:30:51.805: I/WindowManager(263): Input event dispatching timed out sending to application AppWindowToken{2c96db20 token=Token{2c9f1af8 ActivityRecord{2c9fdd70 u0 com.example.peoplework/.Main}}} 
01-15 15:30:56.903: I/InputDispatcher(263): Dropped event because it is stale. 
01-15 15:30:56.905: I/InputDispatcher(263): Dropped event because it is stale. 
01-15 15:30:56.905: I/InputDispatcher(263): Dropped event because it is stale. 
01-15 15:31:30.845: D/AndroidRuntime(1780): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 
01-15 15:31:30.845: D/AndroidRuntime(1780): CheckJNI is ON 
01-15 15:31:30.865: D/dalvikvm(1780): Trying to load lib libjavacore.so 0x0 
01-15 15:31:30.875: D/dalvikvm(1780): Added shared lib libjavacore.so 0x0 
01-15 15:31:30.885: D/dalvikvm(1780): Trying to load lib libnativehelper.so 0x0 
01-15 15:31:30.885: D/dalvikvm(1780): Added shared lib libnativehelper.so 0x0 
01-15 15:31:31.345: D/AndroidRuntime(1780): Calling main entry com.android.commands.pm.Pm 
01-15 15:31:31.365: D/AndroidRuntime(1780): Shutting down VM 
01-15 15:31:31.365: D/dalvikvm(1780): GC_CONCURRENT freed 100K, 18% free 470K/572K, paused 1ms+1ms, total 5ms 
01-15 15:31:31.365: D/dalvikvm(1780): Debugger has detached; object registry had 1 entries 
01-15 15:31:31.834: D/AndroidRuntime(1792): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 
01-15 15:31:31.834: D/AndroidRuntime(1792): CheckJNI is ON 
01-15 15:31:31.864: D/dalvikvm(1792): Trying to load lib libjavacore.so 0x0 
01-15 15:31:31.864: D/dalvikvm(1792): Added shared lib libjavacore.so 0x0 
01-15 15:31:31.884: D/dalvikvm(1792): Trying to load lib libnativehelper.so 0x0 
01-15 15:31:31.884: D/dalvikvm(1792): Added shared lib libnativehelper.so 0x0 
01-15 15:31:32.325: D/AndroidRuntime(1792): Calling main entry com.android.commands.am.Am 
01-15 15:31:32.325: D/dalvikvm(1792): Note: class Landroid/app/ActivityManagerNative; has 156 unimplemented (abstract) methods 
01-15 15:31:32.345: I/ActivityManager(263): START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.example.peoplework/.Main} from pid 1792 
01-15 15:31:32.345: D/AndroidRuntime(1792): Shutting down VM 
01-15 15:31:32.355: D/dalvikvm(1792): GC_CONCURRENT freed 101K, 17% free 501K/604K, paused 0ms+0ms, total 6ms 
01-15 15:31:32.355: D/dalvikvm(1792): Debugger has detached; object registry had 1 entries 
01-15 15:31:37.545: D/dalvikvm(1765): Debugger has detached; object registry had 362 entries 
01-15 15:31:37.545: I/dalvikvm(1765): ignoring registerObject request in thread=1 
01-15 15:31:37.545: I/dalvikvm(1765): ignoring registerObject request in thread=1 
**01-15 15:31:37.585: E/log_tag(1765): Error in http connection android.os.NetworkOnMainThreadException 
01-15 15:31:37.596: E/log_tag(1765): Error converting result java.lang.NullPointerException: lock == null 
01-15 15:31:37.605: E/log_tag(1765): Error parsing data org.json.JSONException: End of input at character 0 of 
01-15 15:31:37.775: E/SurfaceFlinger(37): ro.sf.lcd_density must be defined as a build property 
01-15 15:31:37.875: E/SurfaceFlinger(37): ro.sf.lcd_density must be defined as a build property** 
01-15 15:31:37.895: I/Choreographer(1765): Skipped 31 frames! The application may be doing too much work on its main thread. 
01-15 15:31:37.935: D/gralloc_goldfish(1765): Emulator without GPU emulation detected. 
01-15 15:31:37.995: I/ActivityManager(263): Displayed com.example.peoplework/.Main: +2m1s309ms 
01-15 15:31:39.685: E/SurfaceFlinger(37): ro.sf.lcd_density must be defined as a build property 
01-15 15:31:41.855: E/SurfaceFlinger(37): ro.sf.lcd_density must be defined as a build property 
01-15 15:31:42.555: I/Choreographer(263): Skipped 38 frames! The application may be doing too much work on its main thread. 
: E/(): Device disconnected

來源

2013-01-15 mary wong

+3

我猜你應該使用'mysqli'功能，而不是'mysql'。有關如何使用'mysqli'連接到數據庫的示例，請參見此頁。參考。 http://php.net/manual/en/mysqli.construct.php – user1477388

+0

你的手機是否連接到你的wifi？你可以在手機瀏覽器中加載'10.0.2.2'嗎？如果不是，那就是爲什麼。 – Prisoner

+0

到user1477388：我正在閱讀你的資料！謝謝。希望它可以幫助我解決問題..但是我應該在PHP腳本中寫什麼？ localhost或10.0.2.2 ??謝謝。 致囚犯： 也許我的措辭是誤解..瀏覽器只是意味着Firefox ...我的意思是，這是沒有關於Web服務的問題 –

回答

0

我按照這個教程，問題就解決了。 雖然解釋是中文的，但希望能幫助其他人解決類似的問題。 謝謝大家幫助我！

Connect to mysql using PHP

來源

2013-01-16 07:54:17

0

試試這個，而不是你的PHP代碼：

$link = mysqli_connect("10.0.2.2","root","password","mydbname"); 
    $q=mysqli_query("SELECT * FROM people WHERE birthyear>'".$_REQUEST['year']."'"); 
    while($e=mysqli_fetch_array($q, MYSQL_BOTH)) 
    $output[]=$e; 
    print(json_encode($output)); 
    mysqli_close($link);

來源

2013-01-15 18:10:51

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