android - 从 Android 模拟器连接到 MYSQL 数据库错误

Question

我正在尝试在 mysql 数据库中插入纬度和经度值，但它显示以下错误

http 连接 org.apache.http.conn.HttpHostConnectException 出错：连接到 * http://localhost被拒绝*

//My main.java code is :

public void insertdata()
{
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
 nameValuePairs.add(new BasicNameValuePair("Lat","34"));
nameValuePairs.add(new BasicNameValuePair("Lon","72"));

//http post
try{
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new      
   HttpPost("http://localhost/androidconnection/insertdata.php");
    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    HttpResponse response = httpclient.execute(httppost);
    HttpEntity entity = response.getEntity();
    InputStream is = entity.getContent();
    Log.i("postData", response.getStatusLine().toString());
}

catch(Exception e)
{
    Log.e("log_tag", "Error in http connection "+e.toString());
}

}

//在服务器端我的php插入代码是“insertdata.php”

 <?php
    mysql_connect("localhost","root","");
     mysql_select_db("PeopleData");
   //retrieve the data
   $lat = $_POST['lat'];
  $lon = $_POST['lon'];

  $sql = "INSERT INTO coords (Lat, Lon) VALUES('$lat', '$lon')";

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

            ?>

score 1 · Accepted Answer

localhost指当前运行代码的机器，在本例中是 Android 手机（或模拟器）。为了从android模拟器访问主机，您可以使用ip地址：10.0.2.2

更改您的网址，如下所示：

该行HttpPost("http://localhost/androidconnection/insertdata.php"); 应如下所示：HttpPost("http://10.0.2.2/androidconnection/insertdata.php");

score 0 · Accepted Answer

尝试转换

localhost

和你的

web server IP Address.

这里，HttpPost("http://localhost/androidconnection/insertdata.php");

还要确保您Internet在清单文件中添加了权限。

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

希望它可以帮助你。

谢谢。

android - 从 Android 模拟器连接到 MYSQL 数据库错误

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