java - 从 Swingworker 线程填充 jTable

Question

我无法从 SwingWorker 线程更新我的 JTable。我的代码；

public class FillTable extends SwingWorker<Void, Void> {

        protected Void doInBackground() throws Exception {
            ResultSet rsaccounts;
            Statement stmt;
            String queryaccounts = "select NAME from acc (nolock)\n" + "order by Name";

            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            String connectionUrl = "jdbc:sqlserver://192.100.100.23;" + "databaseName=Dbacc;" + "user=" + "sa" + ";" + "password=" + "sapassword!" + ";"; 
            Connection con = DriverManager.getConnection(connectionUrl);
            stmt = con.createStatement();
            rsaccounts = stmt.executeQuery(queryaccounts);
            ResultSetMetaData rsmd = rsaccounts.getMetaData();


            Vector<String> columnNames = new Vector<String>();
            columnNames.add(rsmd.getColumnName(1)); 
            System.out.println(columnNames);
            int columnCount = rsmd.getColumnCount();

            Vector<Vector<Object>> data = new Vector<Vector<Object>>();

           while (rsaccounts.next()) {
                Vector<Object> vector = new Vector<Object>();
                for (int columnIndex = 1; columnIndex <= columnCount; columnIndex++) {
                vector.add(rsaccounts.getObject(columnIndex));
                }
                data.add(vector);

             }
           DefaultTableModel model = new DefaultTableModel(columnNames,data);
           jTable3.setModel(model);

            rsaccounts.close();
            stmt.close();
            return null;

        }
      public void done() {
            SearchButton.setEnabled(true);
            CreateButton.setEnabled(true);
        } 

    }

我在 GUI 的 init 组件中执行此 swingworker 线程，以便在程序启动时填充 jtable。

fillAccList = new FillTable();
fillAccList.execute();

当程序启动时，我在屏幕上看到[NAME]，因为我添加了这一行 System.out.println(columnNames);如您所见，用于控制 Swing worker 。但我的jtable没有填满。有什么想法吗？

Answer 1

DefaultTableModel 的构造函数首先需要数据，然后是列名称。

更改:

DefaultTableModel model = new DefaultTableModel(columnNames,data);

致:

DefaultTableModel model = new DefaultTableModel(data, columnNames);