休眠的mappedBy引用一个未知的目标实体

Question

我从数据库动态生成的实体类，但是当我有关系加以批注我有以下错误

mappedBy reference an unknown target entity property:   coma.entity.impl.CompetenceCriteriaEntityImpl.competence in coma.entity.impl.CompetenceEntityImpl.competenceCriteriaEntityImpl] with root cause 

org.hibernate.AnnotationException：引用的mappedBy一个未知的目标实体属性：coma.entity.impl.CompetenceCriteriaEntityImpl.competence在coma.entity.impl.CompetenceEntityImpl.competenceCriteriaEntityImpl

我的实体类如下

package coma.entity.impl; 
import java.io.Serializable; 
import java.util.Set; 
import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.FetchType; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.OneToMany; 
import javax.persistence.Table; 
import coma.entity.CompetenceEntity; 
import coma.exception.InvalidIDException; 


@Entity 
@Table(name = "competence") 
public class CompetenceEntityImpl implements CompetenceEntity, Serializable { 
@OneToMany(fetch = FetchType.EAGER, mappedBy = "competence", targetEntity = JobProfileCompetenceEntityImpl.class) 
public Set<JobProfileCompetenceEntityImpl> jobProfileCompetenceEntityImpl; 

@OneToMany(fetch = FetchType.EAGER, mappedBy = "competence",targetEntity = CompetenceCriteriaEntityImpl.class) 
public Set<CompetenceCriteriaEntityImpl> competenceCriteriaEntityImpl; 
/** 
* 
*/ 



/** 
* Identifier of competence 
*/ 
@Id 
@GeneratedValue(strategy = GenerationType.IDENTITY) 
@Column(name = "id_competence") 
private int idCompetence; 



public Set<JobProfileCompetenceEntityImpl> getJobProfileCompetenceEntityImpl() { 
    return jobProfileCompetenceEntityImpl; 
} 

public void setJobProfileCompetenceEntityImpl(Set<JobProfileCompetenceEntityImpl> jobProfileCompetenceEntityImpl) { 
    this.jobProfileCompetenceEntityImpl = jobProfileCompetenceEntityImpl; 
} 

public Set<CompetenceCriteriaEntityImpl> getCompetenceCriteriaEntityImpl() { 
    return competenceCriteriaEntityImpl; 
} 

public void setCompetenceCriteriaEntityImpl(Set<CompetenceCriteriaEntityImpl> competenceCriteriaEntityImpl) { 
    this.competenceCriteriaEntityImpl = competenceCriteriaEntityImpl; 
} 

public void setIdCompetence(int idCompetence) { 
    this.idCompetence = idCompetence; 
} 

/** 
* Name of competence 
*/ 
@Column(name = "name_competence") 
private String nameCompetence; 

/** 
* Identifier category competence 
*/ 
@Column(name = "id_category_competence_enum") 
private int idCategoryCompetenceEnum; 

/** 
* Constructor without parameters 
*/ 
public CompetenceEntityImpl() { 

} 

/** 
* Constructor with parameters 
* 
* @param idCompetence 
* @param nameCompetence 
* @param idCategoryCompetenceEnum 
*/ 
public CompetenceEntityImpl(int idCompetence, String nameCompetence, int idCategoryCompetenceEnum) { 
    this.idCompetence = idCompetence; 
    this.nameCompetence = nameCompetence; 
    this.idCategoryCompetenceEnum = idCategoryCompetenceEnum; 
} 

/** 
* Return identifier of current competence 
* 
* @return idCompetence 
*/ 
@Override 
public int getIdCompetence() { 
    return idCompetence; 
} 

/** 
* Return name of current competence 
* 
* @return nameCompetence 
*/ 
@Override 
public String getNameCompetence() { 
    return nameCompetence; 
} 

/** 
* Set name of current competence 
* 
* @param nameCompetence 
*/ 
@Override 
public void setNameCompetence(String nameCompetence) { 
    this.nameCompetence = nameCompetence; 
} 

/** 
* Return identifier category competence 
* 
* @return idCategoryCompetence 
*/ 
@Override 
public int getIdCategoryCompetenceEnum() { 
    return idCategoryCompetenceEnum; 
} 

/** 
* Set identifier category competence 
* 
* @param idCategoryCompetenceEnum 
*/ 
@Override 
public void setIdCategoryCompetenceEnum(int idCategoryCompetenceEnum) throws InvalidIDException { 
    if (idCategoryCompetenceEnum < 0) { 
     throw new InvalidIDException("The idCategoryCompetenceEnum must be greater than 0"); 
    } else { 
     this.idCategoryCompetenceEnum = idCategoryCompetenceEnum; 
    } 

} 

@Override 
public int hashCode() { 
    final int prime = 31; 
    int result = 1; 
    result = prime * result + idCategoryCompetenceEnum; 
    result = prime * result + idCompetence; 
    result = prime * result + ((nameCompetence == null) ? 0 : nameCompetence.hashCode()); 
    return result; 
} 

@Override 
public boolean equals(Object obj) { 
    if (this == obj) 
     return true; 
    if (obj == null) 
     return false; 
    if (getClass() != obj.getClass()) 
     return false; 
    CompetenceEntityImpl other = (CompetenceEntityImpl) obj; 
    if (idCategoryCompetenceEnum != other.idCategoryCompetenceEnum) 
     return false; 
    if (idCompetence != other.idCompetence) 
     return false; 
    if (nameCompetence == null) { 
     if (other.nameCompetence != null) 
      return false; 
    } else if (!nameCompetence.equals(other.nameCompetence)) 
     return false; 
    return true; 
} 

@Override 
public String toString() { 
    return "CompetenceEntityImpl [idCompetence=" + idCompetence + ", nameCompetence=" + nameCompetence 
      + ", idCategoryCompetenceEnum=" + idCategoryCompetenceEnum + "]"; 
} 

} 

和

package coma.entity.impl; 

import java.io.Serializable; 

import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.FetchType; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.JoinColumn; 
import javax.persistence.ManyToOne; 
import javax.persistence.Table; 

import coma.entity.CompetenceCriteriaEntity; 
import coma.exception.InvalidIDException; 

@Entity 
@Table(name = "competence_criteria") 
public class CompetenceCriteriaEntityImpl implements CompetenceCriteriaEntity, Serializable { 

/** 
* 
*/ 

@Id 
@GeneratedValue(strategy = GenerationType.AUTO) 
@Column(name = "id_competence_criteria") 
private int idCompetenceCriteria; 

@ManyToOne(fetch = FetchType.EAGER, targetEntity = CompetenceEntityImpl.class) 
@JoinColumn(name = "id_competence") 
CompetenceEntityImpl competenceEntityImpl; 

@ManyToOne(fetch = FetchType.EAGER, targetEntity = CriteriaEntityImpl.class) 
@JoinColumn(name = "id_criteria") 
CriteriaEntityImpl criteriaEntityImpl; 

@Column(name = "id_criteria", insertable = false, updatable = false) 
private int idCriteria; 

@Column(name = "id_competence", insertable = false, updatable = false) 
private int idCompetence; 



public CompetenceEntityImpl getCompetenceEntityImpl() { 
    return competenceEntityImpl; 
} 


public void setCompetenceEntityImpl(CompetenceEntityImpl competenceEntityImpl) { 
    this.competenceEntityImpl = competenceEntityImpl; 
} 


public CriteriaEntityImpl getCriteriaEntityImpl() { 
    return criteriaEntityImpl; 
} 


public void setCriteriaEntityImpl(CriteriaEntityImpl criteriaEntityImpl) { 
    this.criteriaEntityImpl = criteriaEntityImpl; 
} 


public CompetenceCriteriaEntityImpl() { 
} 


public CompetenceCriteriaEntityImpl(int idCompetenceCriteria, int idCompetence, int idCriteria) { 
    this.idCompetenceCriteria = idCompetenceCriteria; 
    this.idCompetence = idCompetence; 
    this.idCriteria = idCriteria; 
} 



@Override 
public int getIdCompetenceCriteria() { 
    return idCompetenceCriteria; 
} 

@Override 
public void setIdCompetenceCriteria(int idCompetenceCriteria) { 
    this.idCompetenceCriteria = idCompetenceCriteria; 
} 

@Override 
public int getIdCompetence() { 
    return idCompetence; 
} 

@Override 
public void setIdCompetence(int idCompetence) throws InvalidIDException { 
    if (idCompetence < 0) { 
     throw new InvalidIDException("The idCompetence must be greater than 0"); 
    } else { 
     this.idCompetence = idCompetence; 
    } 
} 

@Override 
public int getIdCriteria() { 
    return idCriteria; 
} 

@Override 
public void setIdCriteria(int idCriteria) throws InvalidIDException { 
    if (idCriteria < 0) { 
     throw new InvalidIDException("The idCriteria must be greater than 0"); 
    } else { 
     this.idCriteria = idCriteria; 
    } 

} 


@Override 
public int hashCode() { 
    final int prime = 31; 
    int result = 1; 
    result = prime * result + idCompetence; 
    result = prime * result + idCompetenceCriteria; 
    result = prime * result + idCriteria; 
    return result; 
} 


@Override 
public boolean equals(Object obj) { 
    if (this == obj) 
     return true; 
    if (obj == null) 
     return false; 
    if (getClass() != obj.getClass()) 
     return false; 
    CompetenceCriteriaEntityImpl other = (CompetenceCriteriaEntityImpl) obj; 
    if (idCompetence != other.idCompetence) 
     return false; 
    if (idCompetenceCriteria != other.idCompetenceCriteria) 
     return false; 
    if (idCriteria != other.idCriteria) 
     return false; 
    return true; 
} 


@Override 
public String toString() { 
    return "CompetenceCriteriaEntityImpl [idCompetenceCriteria=" + idCompetenceCriteria + ", idCompetence=" 
      + idCompetence + ", idCriteria=" + idCriteria + "]"; 
} 


} 

我得到真的很困惑和绝望的Hibernate ...

Answer 1

至于有消息说你的 “的mappedBy” 值是错误的。它应该是BIDIRECTIONAL关系另一侧的FIELD/PROPERTY的名称，它返回到这个类。例如CompetenceEntityImpl.competenceCriteriaEntityImpl声称通过字段CompetenceCriteriaEntityImpl.competence链接回来，但不存在。相反的mappedBy应该是 “competenceEntityImpl”。这在任何基本的JPA文档