java - Intellij IDEA @OneToMany mappedBy属性错误解决

Question

我有点小问题JPA 中的 @OneToMany(mappedBy = "table_name") 注释。所以我们有 2 个表(屏幕截图中的所有详细信息)我添加了一个数据源，但我仍然有错误“无法解析属性”

我能以某种方式解决它吗？

@Id
@Column(name = "state_id")
public int getStateId() {
    return stateId;
}

public void setStateId(int stateId) {
    this.stateId = stateId;
}

@Basic
@Column(name = "description")
public String getDescription() {
    return description;
}

public void setDescription(String description) {
    this.description = description;
}

@Basic
@Column(name = "systemname")
public String getSystemName() {
    return systemName;
}

public void setSystemName(String systemname) {
    this.systemName = systemname;
}

@OneToMany(mappedBy = "note_states")
public Set<Note> getNotes() {
    return notes;
}

public void setNotes(Set<Note> notes) {
    this.notes = notes;
}

Answer 1

mappedBy 属性值不应是表名。在双向关联中，它应该是映射关联的另一个实体中的属性名称。

例子:

public class Country {
    // ...

    @OneToMany(mappedBy = "parentCountry");
    private Set<City> cities;
}

public class City {
    // ...

    @ManyToOne
    @JoinColomn(name = "country_id")
    private Country parentCountry;
}