1

我需要创建一个带有自动增量主键列的表>我尝试使用以下代码，但它抛出错误。

我的代码： 

     CreateTableAccess.CreateAccessTable("CREATE TABLE D_Centre\n"
            + "(\n"
            + "    SlNo AUTOINCREMENT,\n"
            + "    CentreID VARCHAR,\n"
            + "    CentreName VARCHAR,\n"
            + "    [Createddate] DateTime,  \n"
            + "    CreatedBy VARCHAR, \n"
            + "    [Updateddate] DateTime\n"
           + ")", "D_Centre");


    public static void CreateAccessTable(String sqlscript, String tablename )
{
    String dbFileSpec = DataEntryScreen.homedirectory+"/"+"Dataentry.accdb";
    Connection conn = null ;
    try {
        conn = DriverManager.getConnection("jdbc:ucanaccess://" + dbFileSpec);
    } catch (SQLException ex) {
        Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
    }
        DatabaseMetaData dmd = null;
    try {
        dmd = conn.getMetaData();
    } catch (SQLException ex) {
        Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
    }
            ResultSet rs = null;
    try {
        rs = dmd.getTables(null, null, tablename , new String[]{"TABLE"});
    } catch (SQLException ex) {
        Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
    }
        // }
        {
        try {
            if (rs.next()) {
                System.out.println("Table ["+tablename+"] already exists.");
            } else {
                System.out.println("Table ["+tablename+"] does not exist.");
                Statement s = conn.createStatement();
                  s.executeUpdate(sqlscript);
                System.out.println("Table ["+tablename+"] created.");
            }
        } catch (SQLException ex) {
            Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
            System.err.println("Error in table creation  --> "+ex.toString());
        }
        try {
            conn.commit();
        } catch (SQLException ex) {
            Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
        }
        try {
            conn.close();
        } catch (SQLException ex) {
            Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
        }

}
}

错误： 2014 年 11 月 4 日下午 3:39:28 org.DataEntryApplication.view.CreateTableAccess CreateAccessTable SEVERE：null net.ucanaccess.jdbc.UcanaccessSQLException：找不到类型或用户缺少权限：net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate（UcanaccessStatement）的 AUTOINCREMENT .java:164) 在 org.DataEntryApplication.view.CreateTableAccess.CreateAccessTable(CreateTableAccess.java:53) 在 org.DataEntryApplication.view.AccessProcess.accessProcess(AccessProcess.java:40) 在 org.DataEntryApplication.view.DataEntryScreen.addComponentsToPane( DataEntryScreen.java:188) at org.DataEntryApplication.view.DataEntryScreen.createAndShowGUI(DataEntryScreen.java:1092) at org.DataEntryApplication.view.Login$7.actionPerformed(Login.java:277) at javax.swing.AbstractButton.fireActionPerformed( AbstractButton.java:2018) 在 javax.swing。AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.plaf.basic .BasicButtonListener.mouseReleased(BasicButtonListener.java:252) 在 java.awt.Component.processMouseEvent(Component.java:6505) 在 javax.swing.JComponent.processMouseEvent(JComponent.java:3320) 在 java.awt.Component.processEvent( Component.java:6270) 在 java.awt.Container.processEvent(Container.java:2229) 在 java.awt.Component.dispatchEventImpl(Component.java:4861) 在 java.awt.Container.dispatchEventImpl(Container.java:2287) ) 在 java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832) 在 java.awt.Component.dispatchEvent(Component.java:4687) 在 java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492) 在 java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422) 在 java.awt.Container.dispatchEventImpl(Container.java:2273) 在 java.awt.Window.dispatchEventImpl (Window.java:2719) 在 java.awt.Component.dispatchEvent(Component.java:4687) 在 java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735) 在 java.awt.EventQueue.access$200(EventQueue.java :103) 在 java.awt.EventQueue$3.run(EventQueue.java:694) 在 java.awt.EventQueue$3.run(EventQueue.java:692) 在 java.security.AccessController.doPrivileged(Native Method) 在 java. security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) at java.awt.EventQueue$4.run(EventQueue.java:708) 在 java.awt.EventQueue$4.run(EventQueue.java:706) 在 java.security.AccessController.doPrivileged(Native Method) 在 java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) 在 java.awt .EventQueue.dispatchEvent(EventQueue.java:705) 在 java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242) 在 java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161) 在 java.awt.EventDispatchThread.pumpEventsForHierarchy( EventDispatchThread.java:150) 在 java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146) 在 java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138) 在 java.awt.EventDispatchThread.run(EventDispatchThread.java:91 ) 原因：java.sql.SQLException：找不到类型或用户缺少权限：AUTOINCREMENT at net.ucanaccess.jdbc.AbstractExecute.addDDLCommand(AbstractExecute.java:105) at net.ucanaccess.jdbc.AbstractExecute.executeBase(AbstractExecute.java:127) at net.ucanaccess.jdbc.ExecuteUpdate.execute(ExecuteUpdate.java: 56) 在 net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate(UcanaccessStatement.java:162) ... 41 更多

创建表时出错 --> net.ucanaccess.jdbc.UcanaccessSQLException: type not found or user lacks privilege: AUTOINCREMENT

4

1 回答 1

3

确保您使用的是最新版本的 UCanAccess，可在此处获得。

我刚刚使用 UCanAccess 2.0.9.1 尝试了以下操作，它对我来说效果很好。

s.executeUpdate(
        "CREATE TABLE D_Centre (" +
                "slNo AUTOINCREMENT PRIMARY KEY, " +
                "CentreID VARCHAR(100) " +
            ")");

编辑回复：评论

UCanAccess 2.0.9.1（及更高版本）也支持列的默认值。我刚刚对此进行了测试，并且有效：

s.executeUpdate(
        "CREATE TABLE D_Centre (" +
                "slNo AUTOINCREMENT PRIMARY KEY, " +
                "Centre VARCHAR(100) DEFAULT 'foo' " +
            ")");
于 2014-11-04T11:28:21.330 回答