我正在开发一个Android应用程序，它从SQL Server导入lat / long以在地图中显示为标记。我把jtds-1.21.jar放到了lib的路径上，但是我得到了错误
java.sql.SQLEXPCEPTION: No suitable driver found
这是我的代码 map.java
package com.example.ahmed.activeatm;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.LocationManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.provider.Settings;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Arrays;
import java.util.List;
class Checker {
/* FIELDS */
private Activity activity;
private Pass pass;
private List<Resource> resourcesList;
/* TYPES */
public enum Resource {
NETWORK, GPS, BLUETOOTH
}
public static abstract class Pass {
public abstract void pass();
}
/* API */
public Checker(Activity activity) {
this.activity = activity;
}
public void check(Resource... resources) {
resourcesList = Arrays.asList(resources);
if (resourcesList.contains(Resource.GPS) && !isGPSActivated(activity)) {
new AlertDialog.Builder(activity).setMessage("GPS required.").setCancelable(false).setPositiveButton("GPS", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
activity.startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
}).setNegativeButton("Exit", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
activity.finish();
}
}).create().show();
} else if (resourcesList.contains(Resource.NETWORK) && !isNetworkActivated(activity)) {
new AlertDialog.Builder(activity).setMessage("Network required.").setCancelable(false).setPositiveButton("3G", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setClassName("com.android.phone", "com.android.phone.Settings");
activity.startActivity(intent);
}
}).setNeutralButton("WiFi", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
activity.startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));
}
}).setNegativeButton("Exit", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
activity.finish();
}
}).create().show();
}
}
public Checker pass(Pass pass) {
this.pass = pass;
return this;
}
/* PRIVATE */
private boolean isGPSActivated(Context context) {
return ((LocationManager) context.getSystemService(Context.LOCATION_SERVICE)).isProviderEnabled(LocationManager.GPS_PROVIDER);
}
private boolean isNetworkActivated(Context context) {
ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
return networkInfo != null && networkInfo.isConnected();
}
}
public class map1 extends FragmentActivity {
private GoogleMap mMap; // Might be null if Google Play services APK is not available.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map1);
Toast.makeText(getBaseContext(), " test ", Toast.LENGTH_LONG).show();
setUpMapIfNeeded();
connect();
}
@Override protected void onResume() {
super.onResume();
new Checker(this).pass(new Checker.Pass() {
@Override public void pass() {
//do your stuff here, do nothing outside here
}
}).check(Checker.Resource.GPS, Checker.Resource.NETWORK);
}
/**
* Sets up the map if it is possible to do so (i.e., the Google Play services APK is correctly
* installed) and the map has not already been instantiated.. This will ensure that we only ever
* call {@link #setUpMap()} once when {@link #mMap} is not null.
* <p/>
* If it isn't installed {@link SupportMapFragment} (and
* {@link com.google.android.gms.maps.MapView MapView}) will show a prompt for the user to
* install/update the Google Play services APK on their device.
* <p/>
* A user can return to this FragmentActivity after following the prompt and correctly
* installing/updating/enabling the Google Play services. Since the FragmentActivity may not
* have been completely destroyed during this process (it is likely that it would only be
* stopped or paused), {@link #onCreate(Bundle)} may not be called again so we should call this
* method in {@link #onResume()} to guarantee that it will be called.
*/
public void setUpMapIfNeeded() {
// Do a null check to confirm that we have not already instantiated the map.
if (mMap == null) {
// Try to obtain the map from the SupportMapFragment.
mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
.getMap();
// Check if we were successful in obtaining the map.
if (mMap != null) {
setUpMap();
}
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_help, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public String makeURL (double sourcelat, double sourcelog, double destlat, double destlog ){
StringBuilder urlString = new StringBuilder();
urlString.append("http://maps.googleapis.com/maps/api/directions/json");
urlString.append("?origin=");// from
urlString.append(Double.toString(sourcelat));
urlString.append(",");
urlString
.append(Double.toString( sourcelog));
urlString.append("&destination=");// to
urlString
.append(Double.toString( destlat));
urlString.append(",");
urlString.append(Double.toString( destlog));
urlString.append("&sensor=false&mode=driving&alternatives=true");
urlString.append("&key=YOUR_API_KEY");
return urlString.toString();
}
/**
* This is where we can add markers or lines, add listeners or move the camera. In this case, we
* just add a marker near Africa.
* <p/>
* This should only be called once and when we are sure that {@link #mMap} is not null.
*/
private void setUpMap() {
//mMap.addMarker(new MarkerOptions().icon(BitmapDescriptorFactory.fromResource(R.drawable.logo6))
// .position(new LatLng(0, 0)).title("Marker"));
mMap.setMyLocationEnabled(true);//my location button
mMap.getUiSettings().setZoomGesturesEnabled(true);// zoom button
// Toast.makeText(getBaseContext(), " view map ", Toast.LENGTH_LONG).show();
mMap.getUiSettings().setZoomControlsEnabled(true);
}
public void connect() {
Connection conn = null;
ResultSet rs = null;
// String url = "jdbc:jtds:sqlserver://192.168.56.1:1433/lear_db;user=admim;password=admin";
//String username = "admin";
//String password = "admin";
//String driver = "net.sourceforge.jtds.jdbc.Driver";
try {
Class.forName("net.sourceforge.jtds.jdbc.Driver").newInstance();
conn = DriverManager.getConnection("jdbc:sqlserver://192.168.43.46:1433;databaseName=active_atm;user=admin;password=admin;");
PreparedStatement ps;
Toast.makeText(getBaseContext(), "Connected", Toast.LENGTH_LONG).show();
ps=conn.prepareStatement("select x,y,status,bank_name from [atm_info]");
ResultSet res = ps.executeQuery();
while(res.next())
{
double x = Double.parseDouble(res.getString("x"));
double y = Double.parseDouble(res.getString("y"));
String status = res.getString("status");
String bank = res.getString("bank_name");
mMap.addMarker(new MarkerOptions().icon(BitmapDescriptorFactory.fromResource(R.drawable.logo6))
.position(new LatLng(x, y)).title("bank :"+bank+" Status :"+ status));
//res.getString("x")
}
} catch (Exception ex) {
Toast.makeText(getBaseContext(), ex.toString(), Toast.LENGTH_LONG).show();
ex.printStackTrace();
}
}
}
答案 0 :(得分：0)
尝试使用此代码加载驱动程序：
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
您应该使用SQL Server JDBC Driver 2.0。
同时检查this answer。