使用php从mysql到android获取数据

我目前正在尝试开发一个应用程序，它可以从mysql服务器发送和接收数据

该应用程序调用一个php脚本，该脚本连接到mysql服务器。我已经成功开发了发送部分，现在我想从mysql中检索数据并在android手机上显示

mysql表由5列组成：

• bssid

• 建筑

• 楼层

• lon

• lat

php文件

getdata.php

包含：

     <?php
     $con = mysql_connect("localhost","root","xxx");
     if(!$con)
     {
        echo 'Not connected';
        echo ' - ';

     }else
     {
     echo 'Connection Established';
     echo ' - ';
     }

     $db = mysql_select_db("android");
     if(!$db)
     {
        echo 'No database selected';
     }else
     {
        echo 'Database selected';
     }
     $sql = mysql_query("SELECT building,floor,lon,lat FROM ap_location WHERE bssid='00:19:07:8e:f7:b0'");

     while($row=mysql_fetch_assoc($sql))
     $output[]=$row;
     print(json_encode($output));

      mysql_close(); ?>

---

使用HttpGet而不是HttpPost并解析您的url。
这里有一个我经常用来获取的类

public JSONObject get(String urlString){       
    URL currentUrl;
    try {
        currentUrl = new URL(currentUrlString);
    } catch (MalformedURLException e) {
        e.printStackTrace();
        return null;
    }

    HttpURLConnection urlConnection = null;
    InputStream in;
    BufferedReader streamReader = null;
    StringBuilder responseStrBuilder = new StringBuilder();
    String inputStr;
    try {
        urlConnection = (HttpURLConnection) currentUrl.openConnection();            
        in = new BufferedInputStream(urlConnection.getInputStream());
        streamReader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
        while ((inputStr = streamReader.readLine()) != null) {
            responseStrBuilder.append(inputStr);
        }
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        urlConnection.disconnect();
        if(null != streamReader){
            try {
                streamReader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    try {
        return new JSONObject(responseStrBuilder.toString());
    } catch (JSONException e) {
        e.printStackTrace();
    }
    return null;
}

尝试使用
get（“http://echo.jsontest.com/key/value");
碰撞。我需要进一步解释我的问题吗？我测试了代码，它对我来说运行良好。您是否已将此权限添加到清单文件中
@freddy您能帮我获取整列值并存储在一个数组中吗，谢谢
public JSONObject get(String urlString){       
    URL currentUrl;
    try {
        currentUrl = new URL(currentUrlString);
    } catch (MalformedURLException e) {
        e.printStackTrace();
        return null;
    }

    HttpURLConnection urlConnection = null;
    InputStream in;
    BufferedReader streamReader = null;
    StringBuilder responseStrBuilder = new StringBuilder();
    String inputStr;
    try {
        urlConnection = (HttpURLConnection) currentUrl.openConnection();            
        in = new BufferedInputStream(urlConnection.getInputStream());
        streamReader = new BufferedReader(new InputStreamReader(in, "UTF-8"));
        while ((inputStr = streamReader.readLine()) != null) {
            responseStrBuilder.append(inputStr);
        }
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        urlConnection.disconnect();
        if(null != streamReader){
            try {
                streamReader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    try {
        return new JSONObject(responseStrBuilder.toString());
    } catch (JSONException e) {
        e.printStackTrace();
    }
    return null;
}