run:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet successfully received from the server was 123.583 milliseconds ago. The last packet sent successfully to the server was 13 milliseconds ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1122)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3056)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2942)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3485)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1960)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2114)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2690)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2619)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1465)
at Comum.ExecutaSqls.ExecutaSql(ExecutaSqls.java:25)
at CadastroDeRua.FunçoesRua.consultaRua(FunçoesRua.java:81)
at CadastroDeRua.CadastrodeRua.<init>(CadastrodeRua.java:58)
at br.DaysOfEvolution.telas.ChamaTelas.jMenuCadRuaActionPerformed(ChamaTelas.java:375)
at br.DaysOfEvolution.telas.ChamaTelas.access$400(ChamaTelas.java:34)
at br.DaysOfEvolution.telas.ChamaTelas$7.actionPerformed(ChamaTelas.java:222)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
at java.awt.Component.processMouseEvent(Component.java:6263)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6028)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2503)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2953)
... 40 more
java.lang.NullPointerException
at CadastroDeRua.FunçoesRua.consultaRua(FunçoesRua.java:84)
at CadastroDeRua.CadastrodeRua.<init>(CadastrodeRua.java:58)
at br.DaysOfEvolution.telas.ChamaTelas.jMenuCadRuaActionPerformed(ChamaTelas.java:375)
at br.DaysOfEvolution.telas.ChamaTelas.access$400(ChamaTelas.java:34)
at br.DaysOfEvolution.telas.ChamaTelas$7.actionPerformed(ChamaTelas.java:222)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
at java.awt.Component.processMouseEvent(Component.java:6263)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6028)
at java.awt.Container.processEvent(Container.java:2041)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2099)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4460)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
o codigo da minha classe conexao é:
package br.DaysOfEvolution.funcoesBanco;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*09/08/10 as 17:18h
* @author Neylon
*/
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JOptionPane;
import com.sun.corba.se.spi.orbutil.fsm.Guard.Result;
public class ConexaoBanco {
private static ConexaoBanco instancia;
private static Connection conn;
public static Connection connection = null;//gerencia a conexao
public Statement statement = null;//instrucao de consulta
public ResultSet result = null;//gerencia resultados
private String servidor = null;
private static String usuario = null;
private static String senha = null;
private static String url = null;
private static String jdbcDriver = null;
private String banco = null;
private String ender = null;
private String porta = null;
//construtor
private void ConexaoBanco(){
jdbcDriver = "org.gjt.mm.mysql.Driver";
/*servidor = "localhost";
usuario = "root";//Usuario do bancoo
senha = "";//senha do banco
banco= "pintounovidades";//nome do banco em uso
ender = "jdbc:mysql://";*/
servidor = "dbmy0020.whservidor.com";
usuario = "yuricosta_4";//Usuario do bancoo
senha = "teste123";//senha do banco
banco= "yuricosta_4";//nome do banco em uso
ender = "jdbc:mysql://";
porta = "3306";
//URL do banco de dados
url = ender + servidor + ":"+porta+"/" + banco + "?useUnicode=true&characterEncoding=utf8";
}//fim do metodo Conexao
//conecta no banco
private Connection connect() throws SQLException {
try{
Class.forName("com.mysql.jdbc.Driver");
// connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/pintounovidades","root","");
connection = DriverManager.getConnection("jdbc:mysql://dbmy0020.whservidor.com:3306/yuricosta_7",
"yuricosta_4","casa");
return connection;
}catch (ClassNotFoundException e){
throw new SQLException(e.getMessage());
//e.printStackTrace();
}catch (SQLException e){
throw new SQLException(e.getMessage());
//e.printStackTrace();
}
}//fim do metodo getConeection
//Fecha conecao com BD.
public void closeConnection(){
if(connection != null){
try{
connection.close();
}catch (SQLException e){
e.printStackTrace();
}
}
}//fim do metodo closeConnection
public static Connection getConexao() throws SQLException{
if ( conn == null )
{
instancia = new ConexaoBanco();
conn = instancia.connect();
}
return conn;
}//fim do metodo get Instancia
}//fim da classe ConexaoBanco
alguem pode me ajudar ?
