Java ClassCastException类。不能将住宿分配给类。吸引
这些是我的蒙代尔：Java ClassCastException类。不能将住宿分配给类。吸引,java,polymorphism,classcastexception,Java,Polymorphism,Classcastexception,这些是我的蒙代尔： public class Accomodation { ... } 及 我在我的控制器类中有此方法： protected Accomodation getAccomodationByFormData(CrudView crudView) { Accomodation accomodation = new Accomodation(); // setters return accomodation; } 在At
public class Accomodation {
...
}
控制器protected Accomodation getAccomodationByFormData(CrudView crudView) {
Accomodation accomodation = new Accomodation();
// setters
return accomodation;
}
AttractionController控制器AttractionController...
Attraction attraction = (Attraction) getAccomodationByFormData(crudAttractionView); // throws ClassCastException
...
crudatractionviewCrudView- 我该怎么修理
public class Attraction extends Accomodation {
private String openingTime;
public Attraction() {
}
public Attraction(Accomodation accomodation) {
super(accomodation);
}
// getters and setters
}
public class Accomodation implements Serializable {
protected String id;
protected String name;
protected Integer avarageRating;
protected Integer avaragePrice;
protected String phoneNumber;
protected Address address;
protected Point point;
protected List<Review> reviews;
protected Long totalReviews;
protected Long totalRating;
protected List<String> images;
protected boolean hasCertificateOfExcellence;
protected String addedDate;
protected String lastModificationDate;
public Accomodation() {
}
public Accomodation(Accomodation accomodation) {
}
// getters and setters
}
public class Attraction extends Accomodation {
private String openingTime;
public Attraction() {
}
public Attraction(Accomodation accomodation) {
super(accomodation);
}
// getters and setters
}
public class Accomodation implements Serializable {
protected String id;
protected String name;
protected Integer avarageRating;
protected Integer avaragePrice;
protected String phoneNumber;
protected Address address;
protected Point point;
protected List<Review> reviews;
protected Long totalReviews;
protected Long totalRating;
protected List<String> images;
protected boolean hasCertificateOfExcellence;
protected String addedDate;
protected String lastModificationDate;
public Accomodation() {
}
public Accomodation(Accomodation accomodation) {
}
// getters and setters
}
公共类住宿实现可序列化{
受保护的字符串id；
受保护的字符串名称；
保护整数；
受保护的整数avaragePrice；
受保护的字符串电话号码；
受保护地址；
保护点；
受保护名单审查；
受保护的长期审查；
受保护的长期总额定值；
受保护的列表图像；
受保护的布尔hasfecertificateofeexcellence；
受保护的字符串加法；
受保护字符串lastModificationDate；
公共住宿（）{
}
Attraction attraction = (Attraction) super.getAccomodationByFormData(crudAttractionView);
Accomodation accomodation = super.getAccomodationByFormData(crudAttractionView);
Attraction attraction = new Attraction(accomodation);
attraction.setOpeningTime(getOpeningTimeWithFormData())
public Attraction(Accomodation accomodation){
attraction.setX(accomodation.getX())
...
}
import java.io.Serializable;
class Attraction extends Accomodation {
public Attraction() {
}
public Attraction(Accomodation accomodation) {
super(accomodation); // we let super do the simple mapping
}
// getters and setters
public void setOpeningTime(String test){
//
}
protected Accomodation getAccomodationByFormData() {
Accomodation accomodation= new Accomodation();//super.getAccomodationByFormData(crudAttractionView);
Attraction attraction = new Attraction(accomodation); // we convert our accomodation thanks to our constructor
attraction.setOpeningTime("...");
return attraction;
}
}
class Accomodation implements Serializable {
protected String id;
protected String name;
protected Integer avarageRating;
protected Integer avaragePrice;
protected String phoneNumber;
protected Long totalReviews;
protected Long totalRating;
protected boolean hasCertificateOfExcellence;
protected String addedDate;
protected String lastModificationDate;
public Accomodation(Accomodation accomodation) {
this.id = accomodation.id;
this.name = accomodation.name;
this.avarageRating = accomodation.avarageRating;
this.avaragePrice = accomodation.avaragePrice;
this.phoneNumber = accomodation.phoneNumber;
this.totalReviews = accomodation.totalReviews;
this.totalRating = accomodation.totalRating;
this.hasCertificateOfExcellence = accomodation.hasCertificateOfExcellence;
this.addedDate = accomodation.addedDate;
this.lastModificationDate = accomodation.lastModificationDate;
}
public Accomodation() {
}
// getters and setters
}