我正在寻找连续两天的答案，我似乎无法找到答案。所以我使用Play Framework时有以下两个独立的Ebean模型。
@Entity
public class User extends Model {
public static final AtomicInteger seed = new AtomicInteger();
@Id private final int id;
private String name;
private String surname;
private String email;
private String city;
private String country;
private String webpage;
private String profileImgURL;
private String rdfformat;
@OneToMany(cascade = CascadeType.ALL)
public List<Language> languages;
@OneToMany(cascade = CascadeType.ALL)
public List<Experience> experience;
@OneToMany(cascade = CascadeType.ALL)
public List<Diploma> education;
@OneToMany(cascade = CascadeType.ALL)
public List<Skill> skills;
@OneToMany(cascade = CascadeType.ALL)
public List<FriendRequest> friendRequests;
@OneToMany(cascade = CascadeType.ALL)
public List<Friend> friends;
@OneToMany(cascade = CascadeType.ALL)
public List<Recommendation> recommendations;
public User(String name, String surname, String email, String city, String country,
String webpage, String profileImgURL) {
this.id = seed.incrementAndGet();
this.name = name;
this.surname = surname;
this.email = email;
this.city = city;
this.country = country;
this.webpage = webpage;
this.profileImgURL = profileImgURL;
this.languages = new ArrayList<>();
this.experience = new ArrayList<>();
this.education = new ArrayList<>();
this.skills = new ArrayList<>();
this.friendRequests = new ArrayList<>();
this.friends = new ArrayList<>();
this.recommendations = new ArrayList<>();
this.rdfformat = "test";
}
public User() {
this.id = seed.incrementAndGet();
this.friends = new ArrayList<>();
this.languages = new ArrayList<>();
this.experience = new ArrayList<>();
this.education = new ArrayList<>();
this.skills = new ArrayList<>();
this.friendRequests = new ArrayList<>();
this.friends = new ArrayList<>();
this.recommendations = new ArrayList<>();
}
public int getId() { return id; }
public com.hp.hpl.jena.rdf.model.Model getModel() {return model;}
public String getRDFModel() {return rdfformat;}
public String getName() { return name; }
public String getSurname() { return surname; }
public String getEmail() { return email; }
public String getCity() { return city; }
public String getCountry() { return country; }
public String getWebpage() { return webpage; }
@JsonProperty("profile_img_url")
public String getProfileImgURL() { return profileImgURL; }
public List<Language> getLanguages() { return languages; }
public List<Experience> getExperience() { return experience; }
public List<Diploma> getEducation() { return education; }
public List<Skill> getSkills() { return skills; }
public List<FriendRequest> getFriendRequests() { return friendRequests; }
public List<Friend> getFriends() { return friends; }
public List<Recommendation> getRecommendations() { return recommendations; }
public void setName(String name) { this.name = name; }
public void setSurname(String surname) { this.surname = surname; }
public void setEmail(String email) { this.email = email; }
public void setCity(String city) { this.city = city; }
public void setCountry(String country) { this.country = country; }
public void setWebpage(String webpage) { this.webpage = webpage; }
@JsonProperty("profile_img_url")
public void setProfileImgURL(String profileImgURL) { this.profileImgURL = profileImgURL; }
public void setLanguages(List<Language> languages) { this.languages = languages; }
public void setExperience(List<Experience> experience) { this.experience = experience; }
public void setEducation(List<Diploma> education) { this.education = education; }
public void setSkills(List<Skill> skills) { this.skills = skills; }
public void setFriendRequests(List<FriendRequest> friendRequests) { this.friendRequests = friendRequests; }
public void setFriends(List<Friend> friends) { this.friends = friends; }
public void setRecommendations(List<Recommendation> recommendations) { this.recommendations = recommendations; }
}
和
@Entity
public class Vacancy extends Model {
public static final AtomicInteger seed = new AtomicInteger();
@Id private final int vacId;
private int authorId;
private String title;
private String location;
private int months;
private String salary;
private String description;
@OneToMany(cascade = CascadeType.ALL)
public List<Diploma> requiredDiplomas;
@OneToMany(cascade = CascadeType.ALL)
public List<Experience> requiredExperience;
@OneToMany(cascade = CascadeType.ALL)
public List<Skill> requiredSkills;
@OneToMany(cascade = CascadeType.ALL)
public List<Language> requiredLanguages;
public Vacancy(int userId, String title, String location, int months, String salary, String description) {
this.vacId = seed.incrementAndGet();
this.authorId = userId;
this.title = title;
this.location = location;
this.months = months;
this.salary = salary;
this.description = description;
this.requiredDiplomas = new ArrayList<>();
this.requiredExperience = new ArrayList<>();
this.requiredSkills = new ArrayList<>();
this.requiredLanguages = new ArrayList<>();
}
public Vacancy() {
this.vacId = seed.incrementAndGet();
this.requiredDiplomas = new ArrayList<>();
this.requiredExperience = new ArrayList<>();
this.requiredSkills = new ArrayList<>();
this.requiredLanguages = new ArrayList<>();
}
public int getVacId() { return vacId; }
public int getAuthorId() { return authorId; }
public String getTitle() { return title; }
public String getLocation() { return location; }
public int getMonths() { return months; }
public String getSalary() { return salary; }
public String getDescription() { return description; }
public List<Diploma> getRequiredDiplomas() { return requiredDiplomas; }
public List<Experience> getRequiredExperience() { return requiredExperience; }
public List<Skill> getRequiredSkills() { return requiredSkills; }
public List<Language> getRequiredLanguages() { return requiredLanguages; }
public void setAuthorId(int userId) { this.authorId = userId; }
public void setTitle(String title) { this.title = title; }
public void setLocation(String location) { this.location = location; }
public void setMonths(int months) { this.months = months; }
public void setSalary(String salary) { this.salary = salary; }
public void setDescription(String description) { this.description = description; }
public void setRequiredDiplomas(List<Diploma> requiredDiplomas) { this.requiredDiplomas = requiredDiplomas; }
public void setRequiredExperience(List<Experience> requiredExperience) { this.requiredExperience = requiredExperience; }
public void setRequiredSkills(List<Skill> requiredSkills) { this.requiredSkills = requiredSkills; }
public void setRequiredLanguages(List<Language> requiredLanguages) { this.requiredLanguages = requiredLanguages; }
}
两个模型都有一个@Id，并且有自己的写入getter。现在在我的应用程序控制器中，我有一个名为populate（）的函数，它清理数据库并用数据填充它。功能如下：
public static Result populate() throws ParseException {
cleanup();
DateFormat df = new SimpleDateFormat("dd-MM-yyyy");
// USER 2
User user2 = new User("John", "Doe", "john.doe@gmoil.com", "London", "United Kingdom", "www.johndoe.com", "");
user2.addLanguage(new Language("english",4));
user2.save();
// VACANCY 1
Vacancy vacancy1 = new Vacancy(5, "Software Developer", "London, UK", 24, "60-80K", "Program things");
vacancy1.addRequiredDiploma(new Diploma("Bachelor's degree", "Computer Science"));
vacancy1.addRequiredExperience(new Experience("Software Developer", 3));
vacancy1.addRequiredSkill(new Skill("Java", 4));
vacancy1.addRequiredLanguage(new Language("english", 4));
vacancy1.save(); // ERROR HERE
return ok("Users added! (" + User.find().findRowCount() + ")\nVacancies added! (" + Vacancy.find().findRowCount() + ")\n");
}
现在当我尝试调用populate时，我在vacacancy1.save（）行上收到以下错误消息：
[RuntimeException: get id on [models.User] type[models.Vacancy] threw error.]
请记住，当只有一个模型（用户）时，一切都能正常运行。根据我的理解，它与模型的id有关，但我无法弄清楚是什么。我已经尝试过几个方面，比如重命名它们，给它们命名相同，为OneToMany模型中的id提供getter。有人有想法吗？提前谢谢。
EDIT1：我弄清楚导致错误的原因，但我还没有找到解决方案。这主要是因为我在用户和空缺中使用了一些模型（列表），因此我猜这些模型时，它不知道它属于哪个（用户或空缺）？我不确定，但是当我从Vacancy中删除列表时错误消失了。