java – JTable和DefaultTableModel

我有一个表从我的本地MySQL服务器获取信息.它很好地读取数据并将其发布在GUI上.

我的问题是,当我更改table命令时,如何刷新表格,例如：

private String sql = "select * from profildb.tbl_detailed";  //to
private String sql = "select * from profildb.tbl_detailed where Y.."; //this

此操作将在我的Button Action Listener中处理;

    JButton btnOK = new JButton("");
    btnOK.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent arg0) {

            if( (tfBirinci.getText().isEmpty() || tfBirinci.getText() == null) && (tfIkinci.getText().isEmpty() || tfIkinci.getText() == null ))
            {
                taLog.setText("Database alani bos birakilamaz...\n");
            }
            else if ( (!(tfBirinci.getText().isEmpty() )) && (tfIkinci.getText().isEmpty() || tfIkinci.getText() == null ) )
            {
                sql = ("SELECT * FROM " + tfBirinci.getText());
                taLog.setText("Komut elde edildi : " + sql + "\n");
                System.out.println("aaaa " + tfBirinci.getText());
                //anaFrame.dispose();
                //databaseHistoryCalistir(); doesnt work
            }
            else if ( ( !(tfBirinci.getText().isEmpty() ) &&  !(tfBirinci.getText() == null) )  && ( !(tfIkinci.getText().isEmpty() ) && !(tfBirinci.getText() == null) ) )
            {
                sql = ("SELECT * FROM " + tfBirinci.getText() + " WHERE " + tfIkinci.getText());
                taLog.setText("Komut elde edildi : " + sql + "\n" );
                System.out.println("bbbb " + tfBirinci.getText());
                //anaFrame.dispose();
                //databaseHistoryCalistir(); doesnt work
            }else 
                taLog.setText("Lütfen Database alanini doldurunuz, aksi taktirde komut elde edilemez...\n");
        }
    });

那么,当我更改字符串的语句时,我需要实现什么才能更新表？

提前致谢. (给出一个关于DefaultTableModel的例子会很棒)

编辑,你可以在这里看到我的完整代码：http://pastebin.com/eQCJVuKn

解决方法:

1)使用Table from Database by @camickr

2)使用ResultsetTableModel之一

3)从Runnable #Thread调用SQL语句,但输出到XxxTableModel必须在invokeLater内部,更多在Concurency in Swing中关于事件调度线程(EDT)

4)从SwingWorker调用SQL语句,然后从progress(),publish()或done()输出应该在EDT上

5)DefaultTableModel不需要覆盖方法fireXxxTableXxx,所有这些都正确实现

6)来自数据库(ResultsetTableModel)和Runnable #Thread(SwingWorker)的逻辑表之间的区别是

>数据库表(ResultsetTableModel)调用EDT上的所有更新,然后GUI等待所有事件完成,从数据库加载数据期间GUI不负责任或冻结
> Runnable #Thread(SwingWorker)所有更新都来自backgourng任务,GUI可用于鼠标和键盘事件,

标签：java,mysql,swing,jtable,defaulttablemodel
来源： https://codeday.me/bug/20190630/1332781.html