Question

代码：

    private TextField tfTableName = new TextField();
    private TextArea taResult = new TextArea();
    private Button btShowContents = new Button("Show Contents");
    private Label lblStatus = new Label();

    // Statement for executing queries
    private Statement stmt;

    @Override // Override the start method in the Application class
    public void start(Stage primaryStage) {
        HBox hBox = new HBox(5);
        hBox.getChildren().addAll(new Label("Table Name"), tfTableName,
                btShowContents);
        hBox.setAlignment(Pos.CENTER);

        BorderPane pane = new BorderPane();
        pane.setCenter(new ScrollPane(taResult));
        pane.setTop(hBox);
        pane.setBottom(lblStatus);

        // Create a scene and place it in the stage
        Scene scene = new Scene(pane, 500, 200);
        primaryStage.setTitle("Exercise32_05"); // Set the stage title
        primaryStage.setScene(scene); // Place the scene in the stage
        primaryStage.show(); // Display the stage  

        initializeDB();

        btShowContents.setOnAction(e -> showContents());
    }

    private void initializeDB() {
        try {
            // Load the JDBC driver
            Class.forName("net.ucanaccess.jdbc.UcanaccessDriver");
            System.out.println("Driver loaded");

            // Establish a connection
            Connection connection = DriverManager.getConnection("jdbc:ucanaccess://C:/Data/exampleMDB.accdb");
//    ("jdbc:oracle:thin:@liang.armstrong.edu:1521:ora9i",
//     "scott", "tiger");
            System.out.println("Database connected");

            // Create a statement
            stmt = connection.createStatement();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    private void showContents() {
        String tableName = tfTableName.getText();

        try {
            String queryString = "select * from " + tableName;

            ResultSet resultSet = stmt.executeQuery(queryString);

            ResultSetMetaData rsMetaData = resultSet.getMetaData();
            for (int i = 1; i <= rsMetaData.getColumnCount(); i++) {
                taResult.appendText(rsMetaData.getColumnName(i) + "    ");
            }
            taResult.appendText("\n");

            // Iterate through the result and print the student names
            while (resultSet.next()) {
                for (int i = 1; i <= rsMetaData.getColumnCount(); i++) {
                    taResult.appendText(resultSet.getObject(i) + "     ");
                }
                taResult.appendText("\n");
            }
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
    }

    /**
     * The main method is only needed for the IDE with limited JavaFX support.
     * Not needed for running from the command line.
     */
    public static void main(String[] args) {
        launch(args);
    }
}

错误堆栈跟踪；

net.ucanaccess.jdbc.UcanaccessSQLException：UCAExc ::: 4.0.1解码不支持。请选择一个支持阅读的CodecProvider 当前的数据库编码。在 net.ucanaccess.jdbc.UcanaccessDriver.connect（UcanaccessDriver.java:264）

我用谷歌搜索了所有可能的解决方案，但是没有用...请帮助

UcanaccessSQLException：UCAExc ::: 4.0.1

0 个答案: