异常错误:mappedBy引用未知目标实体属性:在www.example.com中显示用户配置文件com.vitoria.models.UserProfile.show
嗨!我正在尝试开发一个将UserProfile类型与Show recommendations相关联的系统,现在我正在做一些基本的工作:我尝试了很多mappedBy和不同注解的组合,但似乎都不起作用。
下面是我的代码:
使用者设定档:
package com.vitoria.models;
import java.io.Serializable;
import java.util.List;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import javax.persistence.Table;
@Entity
@Table(name="user_profile")
public class UserProfile implements Serializable{
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name="user_profile_id")
private Integer id;
@Column(name="user_profile_type")
private String type;
@OneToOne(mappedBy="user_profile")
private User user;
@OneToMany(mappedBy="user_profile")
private List<Show> show;
public UserProfile() {
super();
}
public UserProfile(Integer id, String type, User user, List<Show> show) {
super();
this.id = id;
this.type = type;
this.user = user;
this.show = show;
}
public Integer getId() {
return id;
}
public void ListId(Integer id) {
this.id = id;
}
public String getType() {
return type;
}
public void ListType(String type) {
this.type = type;
}
public User getUser() {
return user;
}
public void ListUser(User user) {
this.user = user;
}
public List<Show> getshow() {
return show;
}
public void ListShow(List<Show> show) {
this.show= show;
}
}
显示:
package com.vitoria.models;
import java.io.Serializable;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
@Entity
@Table(name="show")
public class Show implements Serializable{
private static final long serialVersionUID = 1L;
@Column(name="show_name", unique=true)
private String name;
@Column(name="show_genre")
private String genre;
@Column(name="show_synopsis")
private String synopsis;
@Column(name="show_id")
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Id
private Integer id;
@ManyToOne(cascade = CascadeType.PERSIST)
@JoinColumn(name="user_profile_id")
private UserProfile userProfile;
public Show() {
}
public Show(String name, String genre, String synopsis, Integer id, UserProfile userProfile) {
this.name = name;
this.genre = genre;
this.synopsis = synopsis;
this.id = id;
this.userProfile = userProfile;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGenre() {
return genre;
}
public void setGenre(String genre) {
this.genre = genre;
}
public String getSynopsis() {
return synopsis;
}
public void setSynopsis(String synopsis) {
this.synopsis = synopsis;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public UserProfile getUserProfile() {
return userProfile;
}
public void setUserProfile(UserProfile userProfile) {
this.userProfile = userProfile;
}
}
我知道问题出在注解上,但不知道出在哪里。如果有人能告诉我如何解决这个问题,我会非常感激!〈3
1条答案
按热度按时间14ifxucb1#
您误用了
mappedBy
属性。它必须包含Java类属性的名称。而不是列的名称。