在mysql db中插入一条记录使用php

我在android上的一个调查项目上工作，它是关于登录（这部分工作）和插入数据这部分不起作用的问卷，当调查的人登录到应用程序中有一项调查要做，在这个项目中，我以5个问题作为原型开头，答案是否定的，他必须回答问题，同时点击保存按钮，他们必须添加到mysql数据库中。但是，这并不工作（在logcat的正下方）这里的类questionnaire.java：在mysql db中插入一条记录使用php

public class Questionnaire extends Activity implements LocationListener { 
// Progress Dialog 
    private ProgressDialog pDialog; 
//latitude et longitude 
    private LocationManager lm; 
    Location location; 
    double longitude = 0; 
    double latitude = 0; 
    private double altitude; 
    private float accuracy; 
    int i; 
    JSONParser jsonParser = new JSONParser(); 
    Button enregistrer; 
    EditText zone; 
    RadioGroup mRadioGroup1, mRadioGroup2, mRadioGroup3, mRadioGroup4, mRadioGroup5; 
    RadioButton b1, b2, b3, b4, b5; 
// url to create new product 
    private static String url_insertion = "http://10.0.2.2/android/insertion.php"; 
// JSON Node names 
    private static final String TAG_SUCCESS = "success"; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.questions); 
     Bundle params = getIntent().getExtras(); 
     i = params.getInt("compteur"); 
     i++; 

     // Edit zone text 
     EditText zone1 = (EditText) findViewById(R.appreciation.zone); 

     // edit latitude longitude 
     latitude = location.getLatitude(); 
     longitude = location.getLongitude(); 

     // edit radiogroup 
     mRadioGroup1 = (RadioGroup) findViewById(R.appreciation.rep1); 
     mRadioGroup2 = (RadioGroup) findViewById(R.appreciation.rep2); 
     mRadioGroup3 = (RadioGroup) findViewById(R.appreciation.rep3); 
     mRadioGroup4 = (RadioGroup) findViewById(R.appreciation.rep4); 
     mRadioGroup5 = (RadioGroup) findViewById(R.appreciation.rep5); 

     //edit radio button 
     b1 = (RadioButton) findViewById(mRadioGroup1.getCheckedRadioButtonId()); 
     b2 = (RadioButton) findViewById(mRadioGroup2.getCheckedRadioButtonId()); 
     b3 = (RadioButton) findViewById(mRadioGroup3.getCheckedRadioButtonId()); 
     b4 = (RadioButton) findViewById(mRadioGroup4.getCheckedRadioButtonId()); 
     b5 = (RadioButton) findViewById(mRadioGroup5.getCheckedRadioButtonId()); 

     // Create button 
     Button enregistrer = (Button) findViewById(R.appreciation.enregistrer); 

     // button click event 
     enregistrer.setOnClickListener(new OnClickListener() { 

      public void onClick(View view) { 
       new InsertAppreciation().execute(); 
      } 
     }); 
    } 

    class InsertAppreciation extends AsyncTask<String, String, String> { 

     /** 
     * Before starting background thread Show Progress Dialog 
     * */ 
     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 
      pDialog = new ProgressDialog(Questionnaire.this); 
      pDialog.setMessage("Creating Product.."); 
      pDialog.setIndeterminate(false); 
      pDialog.setCancelable(true); 
      pDialog.show(); 
     } 

     /** 
     * Creating appreciation 
     * */ 
     protected String doInBackground(String... args) { 
      String zone1 = zone.getText().toString(); 
      // String latitude = String.valueOf(latitude).toString(); 
      // String longitude = String.valueOf(longitude).toString(); 
      String rep1 = b1.getText().toString(); 
      String rep2 = b2.getText().toString(); 
      String rep3 = b3.getText().toString(); 
      String rep4 = b4.getText().toString(); 
      String rep5 = b5.getText().toString(); 

      // Building Parameters 
      List<NameValuePair> params = new ArrayList<NameValuePair>(); 
      params.add(new BasicNameValuePair("zone", zone1)); 
      // params.add(new BasicNameValuePair("latitude", latitude)); 
      // params.add(new BasicNameValuePair("longitude", longitude)); 
      params.add(new BasicNameValuePair("rep1", rep1)); 
      params.add(new BasicNameValuePair("rep2", rep2)); 
      params.add(new BasicNameValuePair("rep3", rep3)); 
      params.add(new BasicNameValuePair("rep4", rep4)); 
      params.add(new BasicNameValuePair("rep5", rep5)); 

      // getting JSON Object 
      // Note that create product url accepts POST method 
      JSONObject json = jsonParser.makeHttpRequest(url_insertion, 
        "POST", params); 

      // check log cat fro response 
      Log.d("Create Response", json.toString()); 

      // check for success tag 
      try { 
       int success = json.getInt(TAG_SUCCESS); 

       if (success == 1) { 
        // successfully created appreciation 
        Toast.makeText(getBaseContext(), "Successful insertion", Toast.LENGTH_SHORT).show(); 
        if (i < 5) { 
         Intent intent1 = new Intent(Questionnaire.this, Questionnaire.class); 
         intent1.putExtra("compteur", i); 
         startActivity(intent1); 
        } else { 
         Intent intent2 = new Intent(Questionnaire.this, Endsurvey.class); 
         startActivity(intent2); 
        } 

       } else { 
        // failed to create appreciation 
        Toast.makeText(getBaseContext(), "failed insertion", Toast.LENGTH_SHORT).show(); 
       } 
      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 

      return null; 
     } 

     /** 
     * After completing background task Dismiss the progress dialog 
     * **/ 
     protected void onPostExecute(String file_url) { 
      // dismiss the dialog once done 
      pDialog.dismiss(); 

     } 
    } 
}

对不起，我知道这是太长时间，但我没有任何选择。这里的logcat的：

08-15 22:15:31.620: D/AndroidRuntime(241): Shutting down VM 
08-15 22:15:31.630: W/dalvikvm(241): threadid=3: thread exiting with uncaught exception (group=0x4001b188) 
08-15 22:15:31.640: E/AndroidRuntime(241): Uncaught handler: thread main exiting due to uncaught exception 
08-15 22:15:31.671: E/AndroidRuntime(241): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.stage.sondage/com.stage.sondage.Questionnaire}: java.lang.NullPointerException 
08-15 22:15:31.671: E/AndroidRuntime(241): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496) 
08-15 22:15:31.671: E/AndroidRuntime(241): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512) 
08-15 22:15:31.671: E/AndroidRuntime(241): at android.app.ActivityThread.access$2200(ActivityThread.java:119) 
08-15 22:15:31.671: E/AndroidRuntime(241): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863) 
08-15 22:15:31.671: E/AndroidRuntime(241): at android.os.Handler.dispatchMessage(Handler.java:99) 
08-15 22:15:31.671: E/AndroidRuntime(241): at android.os.Looper.loop(Looper.java:123) 
08-15 22:15:31.671: E/AndroidRuntime(241): at android.app.ActivityThread.main(ActivityThread.java:4363) 
08-15 22:15:31.671: E/AndroidRuntime(241): at java.lang.reflect.Method.invokeNative(Native Method) 
08-15 22:15:31.671: E/AndroidRuntime(241): at java.lang.reflect.Method.invoke(Method.java:521) 
08-15 22:15:31.671: E/AndroidRuntime(241): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
08-15 22:15:31.671: E/AndroidRuntime(241): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
08-15 22:15:31.671: E/AndroidRuntime(241): at dalvik.system.NativeStart.main(Native Method) 
08-15 22:15:31.671: E/AndroidRuntime(241): Caused by: java.lang.NullPointerException 
08-15 22:15:31.671: E/AndroidRuntime(241): at com.stage.sondage.Questionnaire.onCreate(Questionnaire.java:73) 
08-15 22:15:31.671: E/AndroidRuntime(241): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
08-15 22:15:31.671: E/AndroidRuntime(241): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459) 
08-15 22:15:31.671: E/AndroidRuntime(241): ... 11 more 
08-15 22:15:31.730: I/dalvikvm(241): threadid=7: reacting to signal 3 
08-15 22:15:31.730: E/dalvikvm(241): Unable to open stack trace file '/data/anr/traces.txt': Permission denied 
08-15 22:15:35.341: I/Process(241): Sending signal. PID: 241 SIG: 9 
08-15 22:15:36.380: E/ActivityThread(282): Failed to find provider info for com.google.settings 
08-15 22:15:36.390: E/ActivityThread(282): Failed to find provider info for com.google.settings 
08-15 22:15:36.430: E/ActivityThread(282): Failed to find provider info for com.google.settings 
08-15 22:15:36.982: D/dalvikvm(282): GC freed 1983 objects/133688 bytes in 137ms 
08-15 22:15:37.110: D/LocationManager(282): Constructor: service = [email protected] 
08-15 22:15:37.212: D/LocationManager(282): removeUpdates: listener = [email protected] 
08-15 22:15:37.222: I/Maps.MyLocationOverlay(282): Request updates from gps 
08-15 22:15:37.360: D/SensorManager(282): found sensor: Goldfish 3-axis Accelerometer, handle=0 
08-15 22:15:37.520: D/SensorManager(282): found sensor: Goldfish 3-axis Magnetic field sensor, handle=1 
08-15 22:15:37.672: D/SensorManager(282): found sensor: Goldfish Orientation sensor, handle=2 
08-15 22:15:37.830: D/SensorManager(282): found sensor: Goldfish Temperature sensor, handle=3 
08-15 22:15:37.970: I/MapActivity(282): Handling network change notification:CONNECTED 
08-15 22:15:37.980: E/MapActivity(282): Couldn't get connection factory client 
08-15 22:15:38.460: D/dalvikvm(282): GC freed 5048 objects/299360 bytes in 90ms 
08-15 22:16:00.971: D/dalvikvm(282): GC freed 13338 objects/892160 bytes in 200ms

这里的php文件：

<?php 
    //turn off error reporting 
    error_reporting(E_ALL^E_NOTICE^E_WARNING); 

    //Create fields for the database 
    //server, username, password, database 

    $dbhost = "localhost"; 
    $dbuser = "root"; 
    $dbpass = ""; 
    $dbdb = "survey"; 

    //connect to mySQL 
    $connect = mysql_connect($dbhost, $dbuser, $dbpass) or die("connection error"); 

    //Select the database 
    mysql_select_db($dbdb)or die("database selection error"); 

    //Retrieve the login details via POST 
    $zone = $_POST['zone']; 
    $latitude = $_POST['latitude']; 
    $longitude = $_POST['longitude']; 
    $rep1 = $_POST['rep1']; 
    $rep2 = $_POST['rep2']; 
    $rep3 = $_POST['rep3']; 
    $rep4 = $_POST['rep4']; 
    $rep5 = $_POST['rep5']; 

    // mysql inserting a new row 
    $result = mysql_query("INSERT INTO appreciation(id, zone, latitude, longitude,     rep1, rep2, rep3, rep4, rep5) VALUES('', '$zone1', '', '', '$rep1', '$rep2', '$rep3', '$rep4', '$rep5')"); 



    // check if row inserted or not 
    if ($result) { 
    // successfully inserted into database 
    $response["success"] = 1; 
    $response["message"] = "Product successfully created."; 

    // echoing JSON response 
    echo json_encode($response); 
    } else { 
    // failed to insert row 
    $response["success"] = 0; 
    $response["message"] = "Oops! An error occurred."; 

    // 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); 
    //close the connection 
    mysql_close(); 


     } 



      ?>

请帮助它真的很迫切。谢谢

来源

2012-08-17 Asma.O

第1步：**不要使用** mysql_query，而是花费一小段时间来加快mysqli或PDO。您发布的这段代码充满了SQL注入漏洞，您的整个应用程序可能被一个恶意查询破坏。 [适当的SQL转义]（http://bobby-tables.com/php）不是可选的。 – tadman 2012-08-17 05:53:01

那么这是一个PHP问题还是Java问题？您已经发布了一个Java堆栈跟踪和一些随机（而且令人恐惧的）PHP代码，但并没有真正给出关于您的问题的具体性质的任何指导。 – tadman 2012-08-17 05:54:40

谢谢你的建议，我真的不知道是新的android，这是一个java问题，我猜，但我也张贴php文件谁知道！，我张贴logcat，但我不知道什么是exaclty问题？感谢您的帮助 – 2012-08-17 06:21:13

首先，其他人在评论中说过，请看看PDO，因为您的数据库交互非常不安全。

您提供的异常跟踪说明在Questionnaire活动的onCreate方法中发生了未捕获（使用try/catch开始）异常。我期望（请通过调试来检查）第二次在意向束中查看compteur（您将从Questionnaire到Questionnaire活动）时出现错误。

我可以看到，当您触发意图时，您正在将对象放入捆绑包中，但在对其进行处理之前，您没有检查它是否为空。

来源

2012-08-17 07:10:00 melodiouscode

Unable to open stack trace file '/data/anr/traces.txt': Permission denied

您是否添加了从清单xml文件中读取SD卡的权限？

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

来源

2012-08-17 07:32:15

在mysql db中插入一条记录使用php

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