Bonjour,
J'ai vu qu'il y à plusieurs post sur ce thème mais je n'arrive pas à comprendre comment le résoudre.
J’exécute ce code :
Et j’obtiens :
Code : Sélectionner tout - Visualiser dans une fenêtre à part
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42 public class MainActivity extends AppCompatActivity { private static final String url = "jdbc:mysql://192.168.1.155:3306/***"; //*** = DB. private static final String user = "***"; private static final String pass = "***"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); testDB(); } public void testDB() { TextView tv = (TextView)this.findViewById(R.id.text_view); try { Class.forName("com.mysql.jdbc.Driver"); Connection con = DriverManager.getConnection(url, user, pass); /* System.out.println("Database connection success"); */ String result = "Database connection success\n"; Statement st = con.createStatement(); ResultSet rs = st.executeQuery("select * from personne"); ResultSetMetaData rsmd = rs.getMetaData(); while(rs.next()) { result += rsmd.getColumnName(1) + ": " + rs.getInt(1) + "\n"; result += rsmd.getColumnName(2) + ": " + rs.getString(2) + "\n"; result += rsmd.getColumnName(3) + ": " + rs.getString(3) + "\n"; } tv.setText(result); } catch(Exception e) { e.printStackTrace(); tv.setText(e.toString()); } } }
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
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