从数据库中填充 jtable 并将 tinyint 转换为 java 中的复选框

Question

我如何从 MySQL 获取数据到 JTable 并添加 JTable 列号 3 复选框这是我的代码

String sql = "select `id`,`CostCentersName`, case when `Status` = 1 then true else false end AS Status from costcenters limit 0,10 ";
    Clas.classtable obj = new Clas.classtable();
    DefaultTableModel dtm = obj.Query(sql);
    datatable.setModel(dtm);
    CheckBoxRenderer checkBoxRenderer = new CheckBoxRenderer();
    datatable.getColumnModel().getColumn(2).setCellRen  derer(checkBoxRenderer);

我看到这个错误

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
at test.CheckBoxRenderer.getTableCellRendererComponent(CheckBoxRenderer.java:28)

这是我的 class

public class CheckBoxRenderer extends JCheckBox implements TableCellRenderer {


public CheckBoxRenderer() {
    JCheckBox checkBox = new JCheckBox();
    setHorizontalAlignment(JLabel.CENTER);
        checkBox.setHorizontalAlignment(SwingConstants.CENTER);
        checkBox.setBackground( Color.blue);
    }
public static final DefaultTableCellRenderer DEFAULT_RENDERER = new DefaultTableCellRenderer();

public Component getTableCellRendererComponent(JTable table, Object value,
        boolean isSelected, boolean hasFocus, int row, int column) {
    Component c = DEFAULT_RENDERER.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);


    if (isSelected) {
        setForeground(table.getSelectionForeground());
        super.setBackground(table.getSelectionBackground());
        setBackground(table.getSelectionBackground());
        return c;
    } else {
        setForeground(table.getForeground());
        setBackground(table.getBackground());          
    }
   setSelected((value != null && ((Boolean) value).booleanValue())); 
    
    return this;
    }
 }

谁能帮帮我？

Answer 1

我终于解决了这个问题

里面class

setSelected((value != null && ((Boolean) value).booleanValue()));

应该更换

setSelected(value != null && (Boolean.valueOf(value.toString()).booleanValue()));

github

从数据库中填充 jtable 并将 tinyint 转换为 java 中的复选框

Fill jtable from database and convert tinyint to checkbox in java

java

mysql

swing

jtable

jcheckbox