java - 使用 Jackcess 在 Java 中创建新的 MS Access 文件

Question

我已引用此问题的选定答案:Java: Create MSAccess Database File (.mdb 0r .accdb) using Java .

我的机器上有 MS Office 2010。我正在尝试创建 Access 数据库文件(*.mdb/*.accdb)。但是，文件仍然没有被创建，抛出以下异常:

Exception in thread "main" java.io.FileNotFoundException: given file does not exist: C:\Users\473886\Desktop\employeedb1.mdb
    at com.healthmarketscience.jackcess.impl.DatabaseImpl.open(DatabaseImpl.java:360)
    at com.healthmarketscience.jackcess.DatabaseBuilder.open(DatabaseBuilder.java:170)
    at mdb.MDBWriter.createDatabase(MDBWriter.java:93)
    at mdb.MDBWriter.startDatabaseProcess(MDBWriter.java:107)
    at mdb.MDBWriter.main(MDBWriter.java:120)

我使用了答案中可用的相同代码，并进行了一项修改，我使用了文件对话框，该对话框会询问我要在哪里保存数据库文件:

public class MDBWriter {

    public static String saveFile(Frame f, String title, String defDir, String fileType) {
        FileDialog fd = new FileDialog(f, title, FileDialog.SAVE);
        fd.setFile(fileType);
        fd.setDirectory(defDir);
        fd.setLocation(50, 50);
        fd.show();
        return (fd.getDirectory() + "\\" + fd.getFile());
    }

    private static Database createDatabase(String databaseName) throws IOException {
//        return Database.create(new File(databaseName));
        File file = new File(databaseName);
        return new DatabaseBuilder(file)
        .setFileFormat(Database.FileFormat.V2010)
        .open();
    }

    private static TableBuilder createTable(String tableName) {
        return new TableBuilder(tableName);
    }

    public static void addColumn(Database database, TableBuilder tableName, String columnName, Types sqlType) throws SQLException, IOException {
        tableName.addColumn(new ColumnBuilder(columnName).setSQLType(Types.INTEGER).toColumn()).toTable(database);
    }

    public static void startDatabaseProcess() throws IOException, SQLException {
        String fileName = saveFile(new Frame(), "Save...", ".\\",   "*.mdb");
        String databaseName = "D:\\employeedb1.accdb"; // Creating an MS Access database
        Database database = createDatabase(fileName);

        String tableName = "Employee"; // Creating table
        Table table = createTable(tableName)
                .addColumn(new ColumnBuilder("Emp_Id").setSQLType(Types.INTEGER).toColumn())
                .addColumn(new ColumnBuilder("Emp_Name").setSQLType(Types.VARCHAR).toColumn())
                .addColumn(new ColumnBuilder("Emp_Employer").setSQLType(Types.VARCHAR).toColumn())
                .toTable(database);

        table.addRow(122875, "Sarath Kumar Sivan","Infosys Limited.");//Inserting values into the table
    }

    public static void main(String[] args) throws IOException, SQLException {
        startDatabaseProcess();
    }

}

请提出一些解决方案。

Answer 1

如果你想创建一个新数据库，你需要调用DatabaseBuilder.create()，而不是open()(它会打开现有数据库)。