使用http-post和AsyncTask插入數據到MySQL不起作用

Question

我正在製作一個應用程序，需要在MySQL數據庫中發佈一些數據。該代碼不顯示任何錯誤，但不發送數據。我的PHP文件和HttpPost似乎工作正常 - 我試圖改變PHP文件，以便它已經包含數據，然後它的工作。這裏是我的PHP：

<?php 

$username = "user"; 
$password = "password"; 
$hostname = "mysql.xxx.com"; 

//connection to the database 
$dbhandle = mysql_connect($hostname, $username, $password) 
    or die("Unable to connect to MySQL"); 
echo "Connected to MySQL<br>"; 


//select a database to work with 
$selected = mysql_select_db("myapp_xxx_com",$dbhandle) 
    or die("Could not select examples"); 


//retrieve the data 
$street = $_POST['Street']; 
$house = $_POST['House']; 
$city = $_POST['City']; 
$comment = $_POST['Comment']; 

mysql_query ("INSERT INTO Address (Street, Number, City, Comment, TimeOrdered) VALUES('$street', '$house, '$city', '$comment', NOW())"); 

mysql_close($dbhandle); 

?> 

這是我的Java代碼：

import java.util.ArrayList; 

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 android.annotation.TargetApi; 
import android.app.Activity; 
import android.os.AsyncTask; 
import android.os.Build; 
import android.os.Bundle; 
import android.support.v4.app.NavUtils; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.TextView; 

public class OrderSummary extends Activity implements OnClickListener { 

    private EditText editStreetText, editNumberText, editCityText, editCommentText; 
    private Button button; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_order_summary); 

     editStreetText = (EditText) findViewById(R.id.summary_street); 
     editNumberText = (EditText) findViewById(R.id.summary_house); 
     editCityText = (EditText) findViewById(R.id.summary_city); 
     editCommentText = (EditText) findViewById(R.id.summary_comment); 
     button = (Button)findViewById(R.id.button_post_data); 
     button.setOnClickListener(this); 


    @Override 
    public void onClick(View v) { 

     String streetValue = editStreetText.getText().toString(); 
     String numberValue = editNumberText.getText().toString(); 
     String cityValue = editCityText.getText().toString(); 
     String commentValue = editCommentText.getText().toString(); 
     new SummaryAsyncTask().execute(streetValue, numberValue, cityValue, commentValue); 

    } 

    @TargetApi(Build.VERSION_CODES.HONEYCOMB) 
    private void setupActionBar() { 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { 
      getActionBar().setDisplayHomeAsUpEnabled(true); 
     } 
    } 

    public void postData(String street, String number, String city, String comment) 
    { 

     HttpClient httpclient = new DefaultHttpClient(); 
     HttpPost httppost = new HttpPost("http://xxxxxxx.com/postdata.php"); 

     try{ 
      ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4); 
      nameValuePairs.add(new BasicNameValuePair("Street", street)); 
      nameValuePairs.add(new BasicNameValuePair("House", number)); 
      nameValuePairs.add(new BasicNameValuePair("City", city)); 
      nameValuePairs.add(new BasicNameValuePair("Comment", comment)); 

      httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
      HttpResponse response = httpclient.execute(httppost); 
     } 
     catch(Exception e) 
     { 
      Log.e("log_tag", "Error: "+e.toString()); 
     } 

    } 

    private class SummaryAsyncTask extends AsyncTask<String, Void, Void>{ 

     protected Void doInBackground(String... params){ 
      postData(params[0], params[1], params[2], params[3]); 
      return null; 
     } 
    } 

    } 
} 

我根據這個教程http://mobiledevtuts.com/android/android-http-with-asynctask-example/的代碼。我希望有人能幫助我。

Answer 1

你有在PHP的錯誤：'$house必須'$house'

Java代碼進行測試和工作，我只是改變它一點點

import android.os.Bundle; 
import android.app.Activity; 

import java.util.ArrayList; 

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 android.os.AsyncTask; 
import android.util.Log; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 

public class OrderSummary extends Activity { 

    String streetValue; 
    String numberValue; 
    String cityValue; 
    String commentValue; 

    private EditText editStreetText, editNumberText, editCityText, editCommentText; 
    private Button button; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_order_summary); 

     editStreetText = (EditText) findViewById(R.id.summary_street); 
     editNumberText = (EditText) findViewById(R.id.summary_house); 
     editCityText = (EditText) findViewById(R.id.summary_city); 
     editCommentText = (EditText) findViewById(R.id.summary_comment); 

     button = (Button) findViewById(R.id.button_post_data); 

     button.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       streetValue = editStreetText.getText().toString(); 
       numberValue = editNumberText.getText().toString(); 
       cityValue = editCityText.getText().toString(); 
       commentValue = editCommentText.getText().toString(); 
       new SummaryAsyncTask().execute((Void) null); 
      } 
     }); 
    } 

    class SummaryAsyncTask extends AsyncTask<Void, Void, Boolean> { 

     private void postData(String street, String number, String city, 
       String comment) { 

      HttpClient httpclient = new DefaultHttpClient(); 
      HttpPost httppost = new HttpPost("http://xxxxxxx.com/postdata.php"); 

      try { 
       ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4); 
       nameValuePairs.add(new BasicNameValuePair("Street", street)); 
       nameValuePairs.add(new BasicNameValuePair("House", number)); 
       nameValuePairs.add(new BasicNameValuePair("City", city)); 
       nameValuePairs.add(new BasicNameValuePair("Comment", comment)); 
       httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
       HttpResponse response = httpclient.execute(httppost); 
      } 
      catch(Exception e) 
      { 
       Log.e("log_tag", "Error: "+e.toString()); 
      } 
     } 

     @Override 
     protected Boolean doInBackground(Void... params) { 
      postData(streetValue, numberValue, cityValue, commentValue); 
      return null; 
     } 
    } 
} 

不要忘記在Android清單

Internet權限

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

您可以在<uses-sdk />標籤

個

Answer 2

公共類和refreshChildren擴展的AsyncTask {

WebService service; 
Helper helper; 

RefreshChildren(){ 
    service =new WebService(); 
    helper =new Helper(null); 
} 

@Override 
protected String doInBackground(String... params) { 
    refreshChildren(); 
    return null; 
} 

private void refreshChildren() { 
    Log.d("Refresh", "children started"); 
    List<ChildrenInstallBeen> childrenList=new ArrayList<ChildrenInstallBeen>(); 
    childrenList=service.getChildrenListRefresh(); 
    Iterator<ChildrenInstallBeen> iterator=childrenList.iterator(); 
    while (iterator.hasNext()) { 
     ChildrenInstallBeen been = (ChildrenInstallBeen) iterator 
       .next(); 
     Log.d("refresh children : ", ""+been.getFirst_name()); 

    } 

} 

}