[英]Data from sql server
我希望我的Android应用程序从在线数据库中获取数据。 以下是两种情况:
httpost
函数和我的本地机器的ip作为参数时,我看到输出我期望看到的内容( logcat
的数据库)。 我的问题是:如果我从手机运行应用程序,它是否会连接到我的本地机器服务器?
logcat
打印出整个html网站。 我在想这是因为服务器需要用户名和密码,我不知道我是否提供了这些用户名和密码? 所以,你建议做什么? 我希望我的数据库被发送到我的应用程序(以便以后使用它)。
我的代码如下所示(我在评论中只有两个场景之间的变化)
public class MainActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setImageClickListener();
}
private void setImageClickListener() {
ImageView map_image=(ImageView)findViewById(R.id.map_icon);
map_image.setOnTouchListener(new ImageView.OnTouchListener() {
//OnTouchListener listener = new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if(!(event.getAction() == MotionEvent.ACTION_DOWN))
return false; //If the touch event was not putting the finger down on the screen, return false(Actions may be move, up, and so on)
final float x = event.getX();
final float y = event.getY();
//System.out.println("Coordinates of button pressed are: X is %d"+x+" and Y is %d"+ y);
if(x>335 && x<395 && y>225 && y< 235)
DoFirst();
return true;
}
});
}
@SuppressWarnings("null")
private void DoFirst() {
Log.d("SnowReportApp","Do first thing");
setContentView(R.layout.layout_1);
String result = "";
InputStream is = null;
StringBuilder sb=null;
//the year data to send
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();//() before
nameValuePairs.add(new BasicNameValuePair("year","1980"));
//http post
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("192.168.1.67/test.php"); // only this changes to my server url : mysite.com/httpdocs/test.php
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
Log.e("log_tag", "Error in http connection "+e.toString());
}
//convert response to string
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
}catch(Exception e){
Log.e("log_tag", "Error converting result "+e.toString());
}
//parse JSON data
try{
//JSONObject json_data_1 = new JSONObject(result);
JSONArray jArray = new JSONArray(result);
for(int i=0;i<jArray.length();i++){
JSONObject json_data = jArray.getJSONObject(i);
Log.i("log_tag","id: "+json_data.getInt("id")+
", name: "+json_data.getString("name")+
", sex: "+json_data.getInt("sex")+
", birthyear: "+json_data.getInt("birthyear")
);
}
}catch(JSONException e){
Log.e("log_tag", "Error parsing data "+e.toString());
}
}
我的php文件位于c:\\xampp\\htdocs
或mysite服务器上是这样的:
<?php
mysql_connect("127.0.0.1","root","");
mysql_select_db("peopledata");
$q=mysql_query("SELECT * FROM people WHERE birthyear>'".$_REQUEST['year']."'");
while($e=mysql_fetch_assoc($q))
$output[]=$e;
print(json_encode($output));
mysql_close();?>
我的问题是:如果我从手机运行应用程序,它是否会连接到我的本地机器服务器?
答案可能不是 。 这完全取决于:
你最好将mysite.com
用于你的数据库以及你需要的任何后端。
至于你的其他问题,我不能回答它们,因为它们很模糊。 考虑更多地研究你的问题,或者回过头来回答一组有针对性的问题。
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