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我已经阅读了一些关于这里处理此问题的问题，但似乎无法完全理解我的问题我制作了一个简单的 android 应用程序，当在屏幕上按下按钮时检索位置数据。这应该会在 Toast 小部件中弹出，但它并没有像我想象的那样提交给 MySQL 数据库......

我正在使用 apache.http.client 并使用 POST 发送数据（通过 wifi 网络）。

代码如下：

package com.example.GpsTest;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
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.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class GpsTestActivity extends Activity {
    //Set parameters for location updates
    private static final long minimumDistanceChangeBeforeUpdate = 10; //Meters
    private static final long minimumUpdatePeriod = 10000; //In Milliseconds

    protected LocationManager locationManager;
    protected Button gpsRequestButton;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        gpsRequestButton = (Button) findViewById(R.id.gpsRequestButton);
        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, minimumUpdatePeriod, minimumDistanceChangeBeforeUpdate, new MyLocationListener());

    gpsRequestButton.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            showCurrentLocation();
        }
    });
    }   

    protected void showCurrentLocation() {
        Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);

        if (location != null){
            String alert = String.format("Location \n Longitude: %1$s \n Latitude: %2$s", location.getLongitude(), location.getLatitude());
            Toast.makeText(GpsTestActivity.this, alert, Toast.LENGTH_LONG).show();
        }
    }

    private class MyLocationListener implements LocationListener {
        public void onLocationChanged(Location location) {
            String alert = String.format("Location Updated \n Longitude: %1$s \n Latitude: %2$s", location.getLongitude(), location.getLatitude());
            Toast.makeText(GpsTestActivity.this, alert, Toast.LENGTH_LONG).show();
            postData(location);
        }

        public void onStatusChanged(String s, int i, Bundle b){
            Toast.makeText(GpsTestActivity.this, "Provider Status Updated", Toast.LENGTH_LONG).show();
        }

        public void onProviderDisabled(String s) {
            Toast.makeText(GpsTestActivity.this, "GPS Deactivated", Toast.LENGTH_LONG).show();
        }

        public void onProviderEnabled(String s) {
            Toast.makeText(GpsTestActivity.this, "GPS Activated", Toast.LENGTH_LONG).show();
        }
        public void postData(Location location) {
            // Create a new HttpClient and Post Header
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("192.168.1.229/appTesting/gpsdb.php");
            try {
                // Add your data
                List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
                nameValuePairs.add(new BasicNameValuePair("gpsLastKnown","location"));
                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                // Execute HTTP Post Request
                HttpResponse response = httpclient.execute(httppost);
            } catch (ClientProtocolException e) {
                // TODO Auto-generated catch block
            } catch (IOException e) {
                // TODO Auto-generated catch block
            }
        } 
}}

这是我正在使用的简单 PHP 脚本：

<?php
$con = mysql_connect("localhost","root","************");
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }

mysql_select_db("3dprotect", $con);

$sql="INSERT INTO gps (gpsLastKnown)
VALUES
('$_POST[gpsLastKnown]')";

if (!mysql_query($sql,$con))
  {
  die('Error: ' . mysql_error());
  }
echo "1 record added";

mysql_close($con);
?>

就目前而言，没有数据写入数据库，也没有记录错误。让应用程序与数据库对话的任何帮助将不胜感激！

4

1 回答 1

0

尝试在 $_POST 数组中添加大括号

$sql="INSERT INTO gps (gpsLastKnown)
VALUES
('{$_POST[gpsLastKnown]}')";

此外，您能否记录发送到服务器的确切内容。IE 所有的 HTTP 流量。

于 2012-06-14T17:05:57.607 回答