转自:http://www.mkyong.com/wicket/wicket-propertymodel-example/
In Wicket, you can use “PropertyModel” class bind form component to a property of a class. See following example to show you how :
1. User class
An User class, with two properties – “name” and “age”.
package com.mkyong.user;
import java.io.Serializable;
public class User implements Serializable{
private String name;
private int age;
//setter and getter methods
}
2. PropertyModel example
Uses “PropertyModel” to bind textbox components to property of “user” object.
package com.mkyong.user;
import org.apache.wicket.PageParameters;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.model.PropertyModel;
public class UserPage extends WebPage {
private User user = new User();
private String nickname;
public UserPage(final PageParameters parameters) {
add(new FeedbackPanel("feedback"));
final TextField<String> tName = new TextField<String>("name",
new PropertyModel<String>(user, "name"));
final TextField<Integer> tAge = new TextField<Integer>("age",
new PropertyModel<Integer>(user, "age"));
final TextField<String> tNickname = new TextField<String>("nickname",
new PropertyModel<String>(this, "nickname"));
Form<?> form = new Form<Void>("userForm") {
@Override
protected void onSubmit() {
PageParameters pageParameters = new PageParameters();
pageParameters.add("name", user.getName());
pageParameters.add("age", Integer.toString(user.getAge()));
pageParameters.add("nickname", nickname);
setResponsePage(SuccessPage.class, pageParameters);
}
};
add(form);
form.add(tName);
form.add(tAge);
form.add(tNickname);
}
}
Binds “tName” textbox component to “User” object, “name” property.
final TextField<String> tName = new TextField<String>("name",
new PropertyModel<String>(user, "name"));
Binds “tNickname” textbox component to current UserPage’s “nickname” property.
final TextField<String> tNickname = new TextField<String>("nickname",
new PropertyModel<String>(this, "nickname"));