錯誤在Mac OS小牛的MySQL連接到Java的NetBeans

Question

下面是用於連接到數據庫的代碼：

public void database() 

{ 

    String temp=""; 

    Connection conn = null; 

    PreparedStatement preparedStatement = null; 


ResultSet resultSet = null; 

Statement statement=null; 
    try { 

       String url = "jdbc:mysql://127.0.0.1:3306/golf"; 

     Class.forName ("oracle.jdbc.driver.OracleDriver"); 

     conn = DriverManager.getConnection (url,"root",""); 

     if (!conn.isClosed()) 
     { 
      statement = conn.createStatement (); 
          resultSet = statement.executeQuery("select * from golfdb"); 
          writeResultSet(resultSet); 
      statement.close(); 
     } 
    } 
    catch (Exception e) 
    { 

       System.err.println("Exception: " + e.getMessage());} 

    finally 
    { 
     try 
     { 
      if (conn != null) 
      {conn.close();} 
     } 
     catch (SQLException e) 
     {} 
    } 
} 

，這裏是我收到的錯誤，當我運行程序：

Exception: oracle.jdbc.driver.OracleDriver 

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 0 >= 0 

    at java.util.Vector.elementAt(Vector.java:427) 

    at 

javax.swing.table.DefaultTableColumnModel.getColumn(DefaultTableColumnModel.java:277) 

    at golf.addeditpoints(golf.java:220) 

    at golf$17.actionPerformed(golf.java:728) 

    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028) 

    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351) 

    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) 

    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) 

    at 
javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) 

    at java.awt.Component.processMouseEvent(Component.java:6414) 

    at javax.swing.JComponent.processMouseEvent(JComponent.java:3275) 

    at java.awt.Component.processEvent(Component.java:6179) 

    at java.awt.Container.processEvent(Container.java:2084) 

    at java.awt.Component.dispatchEventImpl(Component.java:4776) 

    at java.awt.Container.dispatchEventImpl(Container.java:2142) 

    at java.awt.Component.dispatchEvent(Component.java:4604) 

    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4618) 

    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4279) 

    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4209) 

    at java.awt.Container.dispatchEventImpl(Container.java:2128) 

    at java.awt.Window.dispatchEventImpl(Window.java:2492) 

    at java.awt.Component.dispatchEvent(Component.java:4604) 

    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:717) 

    at java.awt.EventQueue.access$400(EventQueue.java:82) 

    at java.awt.EventQueue$2.run(EventQueue.java:676) 

    at java.awt.EventQueue$2.run(EventQueue.java:674) 

    at java.security.AccessController.doPrivileged(Native Method) 

    at 
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86) 

    at 
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:97) 

    at java.awt.EventQueue$3.run(EventQueue.java:690) 

    at java.awt.EventQueue$3.run(EventQueue.java:688) 

    at java.security.AccessController.doPrivileged(Native Method) 

    at 
java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:86) 

    at java.awt.EventQueue.dispatchEvent(EventQueue.java:687) 

    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) 

    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) 

    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201) 

    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196) 

    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188) 

    at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) 

Answer 1

您正嘗試使用Oracle驅動程序連接到MYSQL。 你應該使用這樣的：

Class.forName("com.mysql.jdbc.Driver"); 

當然你必須先獲得此驅動程序的罐子。 有一個很好的教程here。

Answer 2

您正在爲您的數據庫使用不兼容的驅動程序。如果你的數據庫是MySQL的數據和操作系統是Windows應該比你從這裏http://dev.mysql.com/downloads/connector/j

和使用下面的加載驅動

Class.forName("com.mysql.jdbc.Driver"); 

這link具有用於連接到MySQL使用Java一個很好的教程下載JAR。

Answer 3

這裏

下載驅動器MySQL Driver

，並嘗試這個例子

import java.sql.DriverManager; 
import java.sql.Connection; 
import java.sql.SQLException; 

public class JDBCExample { 

    public static void main(String[] argv) { 
    try { 
     Class.forName("com.mysql.jdbc.Driver"); 
    } catch (ClassNotFoundException e) { 
     System.out.println("Where is your MySQL JDBC Driver?"); 
     e.printStackTrace(); 
     return; 
    } 

    System.out.println("MySQL JDBC Driver Registered!"); 
    Connection connection = null; 

    try { 
     connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/suru","root", "password"); 
     System.out.println("Connection Success..."); 
    } catch (SQLException e) { 
     System.out.println("Connection Failed!"); 
     e.printStackTrace(); 
     return; 
    } 

    } 
}