如何使用绑定类通过代码将 JComboBox selectedItem 绑定到 Jtable？
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【中文标题】如何使用绑定类通过代码将 JComboBox selectedItem 绑定到 Jtable？【英文标题】：How to bind a JComboBox selectedItem to a Jtable by code using binding classes? 【发布时间】：2017-03-21 08:42:05 【问题描述】：我使用此代码成功地将 JTextField 绑定到 JTable 中的选定行：
public static final void BindTableToFields(JTable Table, Object[] Fields)
for (Object Field : Fields)
BeanProperty<JTable, Object> tableBeanProperty;
String DesignCallID;
String PropertyName;
if (Field instanceof JTextField)
BeanProperty<JTextField, String> BindingFieldProperty;
Binding<JTable, Object, JTextField, String> binding;
JTextField jTextField = (JTextField) Field;
DesignCallID = jTextField.getText();
PropertyName = "selectedElement." + GetCorrespondingColumn(Table, DesignCallID);
jTextField.setText("");
System.out.println("property name =" + PropertyName.trim());
tableBeanProperty = BeanProperty.create(PropertyName);
BindingFieldProperty = BeanProperty.create("text");
binding = Bindings.createAutoBinding(UpdateStrategy.READ_WRITE,
Table,
tableBeanProperty,
jTextField,
BindingFieldProperty);
Converter<Object, String> old = binding.getConverter();
Converter<Object, String> converter = new Converter<Object, String>()
@Override
public String convertForward(Object value)
try
if (value instanceof HashMap)
HashMap hashMap = (HashMap) value;
System.out.println(hashMap);
// Object get = hashMap.get(GetCorrespondingColumn(Table, DesignCallID));
return (String) hashMap.get(GetCorrespondingColumn(Table, DesignCallID));
else if (value instanceof String)
return (String) value;
else if (value instanceof Integer)
Integer integer = (Integer) value;
return integer.toString();
else if (value instanceof Float)
Float float1 = (Float) value;
return float1.toString();
else if (value instanceof Double)
Double double1 = (Double) value;
return double1.toString();
else if (value instanceof Date)
Date date = (Date) value;
return date.toLocalDate().format(DateTimeFormatter.ISO_LOCAL_DATE);
MyLogger.Log_to_local(new Exception("Binding Class Not Handled" + value.getClass().getName()));
return "";
catch (Exception e)
e.printStackTrace();
MyLogger.Log_to_local(e);
return "impossible";
@Override
public Object convertReverse(String value)
try
return value;
catch (Exception e)
e.printStackTrace();
return null;
;
binding.setConverter(converter);
binding.bind();
else
//
//
// other component as JPasswordField .....
然后是我尝试绑定一个 JComboBox 我尝试了这两个版本：
if (Field instanceof JComboBox)
//<editor-fold>
System.out.println("binding ");
JComboBox jComboBox = (JComboBox) Field;
BeanProperty<JComboBox, String> BindingFieldProperty;
Binding<JTable, Object, JComboBox, String> binding;
DesignCallID = jComboBox.getName();
PropertyName = "selectedElement." + GetCorrespondingColumn(Table, DesignCallID);
System.out.println("property name =" + PropertyName.trim());
tableBeanProperty = BeanProperty.create(PropertyName);
BindingFieldProperty = BeanProperty.create("selectedItem");
binding = Bindings.createAutoBinding(UpdateStrategy.READ_WRITE,
Table,
tableBeanProperty,
jComboBox,
BindingFieldProperty);
Converter<Object, String> old = binding.getConverter();
Converter<Object, String> converter = new Converter<Object, String>()
@Override
public String convertForward(Object value)
try
if (value instanceof HashMap)
HashMap hashMap = (HashMap) value;
System.out.println(hashMap);
// Object get = hashMap.get(GetCorrespondingColumn(Table, DesignCallID));
return (String) hashMap.get(GetCorrespondingColumn(Table, DesignCallID));
else if (value instanceof String)
return (String) value;
else if (value instanceof Integer)
Integer integer = (Integer) value;
return integer.toString();
else if (value instanceof Float)
Float float1 = (Float) value;
return float1.toString();
else if (value instanceof Double)
Double double1 = (Double) value;
return double1.toString();
else if (value instanceof Date)
Date date = (Date) value;
return date.toLocalDate().format(DateTimeFormatter.ISO_LOCAL_DATE);
MyLogger.Log_to_local(new Exception("Binding Class Not Handled" + value.getClass().getName()));
return "";
catch (Exception e)
e.printStackTrace();
MyLogger.Log_to_local(e);
return "impossible";
@Override
public Object convertReverse(String value)
try
return value;
catch (Exception e)
e.printStackTrace();
return null;
;
binding.setConverter(converter);
binding.bind();
//</editor-fold>
另一个版本是：
System.out.println("binding jcombobox");
JComboBox jComboBox = (JComboBox) Field;
BeanProperty<JComboBox, Integer> BindingFieldProperty;
Binding<JTable, Object, JComboBox, Integer> binding;
DesignCallID = jComboBox.getName();
PropertyName = "selectedElement." + GetCorrespondingColumn(Table, DesignCallID);
System.out.println("property name =" + PropertyName.trim());
tableBeanProperty = BeanProperty.create(PropertyName);
BindingFieldProperty = BeanProperty.create("selectedItem");
binding = Bindings.createAutoBinding(UpdateStrategy.READ_WRITE,
Table,
tableBeanProperty,
jComboBox,
BindingFieldProperty);
Converter<Object, Integer> old = binding.getConverter();
Converter<Object, Integer> converter = new Converter<Object, Integer>()
@Override
public Integer convertForward(Object value)
try
if (value instanceof HashMap)
HashMap hashMap = (HashMap) value;
System.out.println(hashMap);
// Object get = hashMap.get(GetCorrespondingColumn(Table, DesignCallID));
return Integer.parseInt(""+hashMap.get(GetCorrespondingColumn(Table, DesignCallID)));
else if (value instanceof String)
return Integer.parseInt(""+value);
else if (value instanceof Integer)
Integer integer = (Integer) value;
return integer;
else if (value instanceof Float)
Float float1 = (Float) value;
return float1.intValue();
else if (value instanceof Double)
Double double1 = (Double) value;
return double1.intValue();
else if (value instanceof Date)
Date date = (Date) value;
MyLogger.Log_to_local(new Exception("Binding Class Not Handled" + value.getClass().getName()));
return 1;
MyLogger.Log_to_local(new Exception("Binding Class Not Handled" + value.getClass().getName()));
return 1;
catch (Exception e)
e.printStackTrace();
MyLogger.Log_to_local(e);
return 1;
@Override
public Object convertReverse(Integer value)
try
return value;
catch (Exception e)
e.printStackTrace();
return null;
;
binding.setConverter(converter);
binding.bind();
我不知道我是否错过了，它不适用于 JcomboBox ！ 所以请告诉我是否有任何错误或遗漏的逻辑，还有一个解决方案可以通过代码将我的 JComboBox 绑定到我的 JTable，告诉我如何操作。 谢谢
【问题讨论】：
【参考方案1】：首先，IMO，您提供的代码超过 100 行代码，所以大多数人不愿意回答这个问题。
回到您的问题，您问题的可能答案是使用setCellEditor 方法。如下面的代码
//provided you have instatiate the table.
//then instantiate the `TableColumn` object to accept the column
TableColumn sportColumn = table.getColumnModel().getColumn(2);
...
//add the desired items to be selected by the user
JComboBox comboBox = new JComboBox();
comboBox.addItem("Snowboarding");
comboBox.addItem("Rowing");
comboBox.addItem("Chasing toddlers");
comboBox.addItem("Speed reading");
comboBox.addItem("Teaching high school");
comboBox.addItem("None");
//add the combo box into the column
sportColumn.setCellEditor(new DefaultCellEditor(comboBox));
这里是参考：https://docs.oracle.com/javase/tutorial/uiswing/components/table.html#combobox
【讨论】：
问题不在于将表格列渲染为组合框，而在于将组合框内容的事件绑定到内容（列的值）以上是关于如何使用绑定类通过代码将 JComboBox selectedItem 绑定到 Jtable？的主要内容，如果未能解决你的问题，请参考以下文章