java - 创建 JTextArea

Question

我正在使用一些代码来获取文件名并将其存储在数据库中，一切正常，但我想显示它存储在 TextArea 上的文件，我该怎么做？

这是用于存储文件名的代码。顺便说一句，我正在 NetBeans 中执行此操作。

private void ActualizerBDActionPerformed(java.awt.event.ActionEvent evt) {                                             
        Conectar();
        File folder = null;
    try {
        String ppp = new File(".").getCanonicalPath();            
        folder = new File(ppp + "\\ImagensDB");
    } catch (IOException iOException) {
    }
        File[] listOfFiles = folder.listFiles();
        String query = "insert into dados (Num, Nome, Autor, Data, Preco, Categoria)" +"values(?,?,?,?,?,?)";
        PreparedStatement prepStmt=null;
    try {
        prepStmt = con.prepareStatement(query);
    } catch (SQLException ex) {
        Logger.getLogger(JanelaPrincipal.class.getName()).log(Level.SEVERE, null, ex);
    }
        for (int j = 0; j < listOfFiles.length; j++) {
                 if (listOfFiles[j].isFile()) {
            try {
                String text = listOfFiles[j].getName();
                String txsp[] = text.split("-");
                      prepStmt.setString(1, txsp[0]);
                      prepStmt.setString(2, txsp[1]);
                      prepStmt.setString(3, txsp[2]);
                      prepStmt.setString(4, txsp[3]);
                      prepStmt.setString(5, txsp[4]);
                      prepStmt.setString(6, txsp[5]);
                      prepStmt.execute(); // executa o INSERT
            } catch (SQLException ex) {
                Logger.getLogger(JanelaPrincipal.class.getName()).log(Level.SEVERE, null, ex);
            }
      }
}
        JOptionPane.showMessageDialog(null, "Dados Introduzidos com Sucesso!");
        try {
            con.close();
        } catch (SQLException ex) {
            Logger.getLogger(JanelaPrincipal.class.getName()).log(Level.SEVERE, null, ex);
        }

}

提前致谢。

Answer 1

• 从数据库读取文件名:

"Select fileName from YourTable"

• 将名称添加到 for-each 中的文本区域

textArea.append(fileName + "\n");