在play框架2上使用ManyToOne字段绑定表单请求

public class User {
    @Id
    public Long id;
    public String name;
    @ManyToOne
    public Address address;
}

public class Address {
    @Id
    public Long id;
    public String street;
    public String city;
    public String country;
}

Form<User> userForm = formFactory.form(User.class);

@form(routes.HomeController.save())
@helper.inputText(userForm("name"))
@helper.inputText(userForm("address.street"))
@helper.inputText(userForm("address.city"))
@helper.inputText(userForm("address.country"))