Vaadin字段组将Enum与TextField等绑定

Question

Im pretty new it Vaadin and I cannot make simple binding (i google alot)

I have Person class with some field for example Gender. Gender - its typical java enum.

    fieldGroup.setItemDataSource ( new BeanItem<> ( person ) );
    fieldGroup.setReadOnly ( true );
    ....
    DateField field = new DateField ( "some_caption");
    fieldGroup.bind ( field, "geenger"); //property - "gender" field (type - enum Gender)

them Im receiving an exception:

Caused by: com.vaadin.data.util.converter.Converter$ConversionException: Unable to convert value of type model.Gender to presentation type class java.lang.String. No converter is set and the types are not compatible.

Can you please share your ideas how to fix it.

Answer 1

您将必须创建自己的Converter<String,Gender>并将其分配给TextField