Java 仅当部署到Heroku时，mappedBy Hibernate错误

我有一个使用Hibernate、ClearDBMySQL和Heroku的简单Java项目。当我通过Eclipse在本地运行（Tomcat 9.0）时，一切都正常（包括检索持久化对象），但一旦我部署到Heroku，我就会在我的一个OneToMany连接上收到Hibernate“mappedBy reference a unknown target entity property”

以下是部署时（由Main.java HttpServlet捕获并打印）得到的堆栈跟踪错误：

[PersistenceUnit:coloradotaghunter\u管理器]无法构建Hibernate
会话工厂
由…引起的。。。
mappedBy引用未知的目标实体属性：com.coloradotaghunter.gmu.tags中的com.coloradotaghunter.Tag.gmu
org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException（EntityManagerFactoryBuilderImpl.java:1249）
org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.access$600（EntityManagerFactoryBuilderImpl.java:120）
org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform（EntityManagerFactoryBuilderImpl.java:860）
org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform（EntityManagerFactoryBuilderImpl.java:850）
org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl（ClassLoaderServiceImpl.java:425）
org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build（EntityManagerFactoryBuilderImpl.java:849）
org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory（HibernatePersistenceProvider.java:75）
persistence.persistence.createEntityManagerFactory（persistence.java:79）
persistence.persistence.createEntityManagerFactory（persistence.java:54）
TagHunterService.（TagHunterService.java:30）
doGet（Main.java:23）
javaservlet.http.HttpServlet.service（HttpServlet.java:635）
javaservlet.http.HttpServlet.service（HttpServlet.java:742）
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:231）
org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）
org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:198）
org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:96）
org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:493）
org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:140）
org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:81）
org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:87）
org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:342）
org.apache.coyote.http11.Http11Processor.service（Http11Processor.java:800）
org.apache.coyote.AbstractProcessorLight.process（AbstractProcessorLight.java:66）
org.apache.coyote.AbstractProtocol$ConnectionHandler.process（AbstractProtocol.java:806）
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun（NioEndpoint.java:1498）
org.apache.tomcat.util.net.SocketProcessorBase.run（SocketProcessorBase.java:49）
java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149）
java.util.concurrent.ThreadPoolExecutor$Worker.run（ThreadPoolExecutor.java:624）
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run（TaskThread.java:61）
run（Thread.java:748）

下面是涉及的Gmu（父对象）和标记（子对象）对象：

Gmu.java

/**
 * Gmu generated by hbm2java
 */
@Entity
@Table(name = "gmu", catalog = "heroku_74dfffe65503eee")
public class Gmu implements java.io.Serializable {

    /**
     * 
     */
//  private static final long serialVersionUID = -501255736919935566L;
    private int gmuNbr;
    private String regionCode;
    private Set<HarvestEstimate> harvestEstimates = new HashSet<HarvestEstimate>(0);
    private Set<Tag> tags = new HashSet<Tag>(0);

    public Gmu() {
    }

    public Gmu(int gmuNbr) {
        this.gmuNbr = gmuNbr;
    }

    public Gmu(int gmuNbr, Set<HarvestEstimate> harvestEstimates, Set<Tag> tags) {
        this.gmuNbr = gmuNbr;
        this.harvestEstimates = harvestEstimates;
        this.tags = tags;
    }

    @Id
    @Column(name = "gmu_nbr", unique = true, nullable = false)
    public int getGmuNbr() {
        return this.gmuNbr;
    }

    public void setGmuNbr(int gmuNbr) {
        this.gmuNbr = gmuNbr;
    }

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "gmu")
    public Set<HarvestEstimate> getHarvestEstimates() {
        return this.harvestEstimates;
    }

    public void setHarvestEstimates(Set<HarvestEstimate> harvestEstimates) {
        this.harvestEstimates = harvestEstimates;
    }

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "gmu")
    public Set<Tag> getTags() {
        return this.tags;
    }

    public void setTags(Set<Tag> tags) {
        this.tags = tags;
    }

    @Column(name = "region_code", nullable = true, length = 45)
    public String getRegionCode() {
        return regionCode;
    }

    public void setRegionCode(String regionCode) {
        this.regionCode = regionCode;
    }

}

/**
*hbm2java生成的Gmu
*/
@实体
@表（name=“gmu”，catalog=“Heroku74DFFFE65503EEE”）
公共类Gmu实现java.io.Serializable{
/**
* 
*/
//私有静态最终长serialVersionUID=-501255736919935566L；
私有int GMUNB；
私有字符串区域码；
私有集=新哈希集（0）；
私有集标记=新哈希集（0）；
公共Gmu（）{
}
公共Gmu（国际Gmu）{
this.gmunb=gmunb；
}
公共Gmu（整数GMUNB、集合估计、集合标记）{
this.gmunb=gmunb；
this.harvestEstimates=harvestEstimates；
this.tags=标签；
}
@身份证
@列（name=“gmu\u nbr”，unique=true，nullable=false）
public int getGmuNbr（）{
返回此.gmunb；
}
公共无效设置GMUNB（int GMUNB）{
this.gmunb=gmunb；
}
@OneToMany（fetch=FetchType.LAZY，mappedBy=“gmu”）
公共集getHarvestEstimates（）{
返回此文件，以获取估计值；
}
公共无效setHarvestEstimates（集合harvestEstimates）{
this.harvestEstimates=harvestEstimates；
}
@OneToMany（fetch=FetchType.LAZY，mappedBy=“gmu”）
公共集getTags（）{
返回此.tags；
}
公共无效集合标记（集合标记）{
this.tags=标签；
}
@列（name=“region\u code”，null=true，长度=45）
公共字符串getRegionCode（）{
返回区域代码；
}
公共无效setRegionCode（字符串regionCode）{
this.regionCode=regionCode；
}
}

Tag.java

/**
 * Tag generated by hbm2java
 */
@Entity
@Table(name = "tag", catalog = "heroku_74dfffe65503eee")
public class Tag implements java.io.Serializable {

    /**
     * 
     */
//  private static final long serialVersionUID = -5962836863381745774L;
    private String tagCode;
    private Gmu gmu;

    private char methodCode;
    private char seasonTypeCode;
    private int seasonNbr;
    private char speciesCode;
    private char genderCode;
    private char listCode;
    private Set<DrawResult> drawResults = new HashSet<DrawResult>(0);

    public Tag() {
    }

    public Tag(String tagCode, Gmu gmu, char methodCode, char seasonTypeCode, int seasonNbr, char speciesCode,
            char genderCode, char listCode) {
        this.tagCode = tagCode;
        this.gmu = gmu;
        this.methodCode = methodCode;
        this.seasonTypeCode = seasonTypeCode;
        this.seasonNbr = seasonNbr;
        this.speciesCode = speciesCode;
        this.genderCode = genderCode;
        this.listCode = listCode;
    }

    public Tag(String tagCode, Gmu gmu, char methodCode, char seasonTypeCode, int seasonNbr, char speciesCode,
            char genderCode, char listCode, Set<DrawResult> drawResults) {
        this.tagCode = tagCode;
        this.gmu = gmu;
        this.methodCode = methodCode;
        this.seasonTypeCode = seasonTypeCode;
        this.seasonNbr = seasonNbr;
        this.speciesCode = speciesCode;
        this.genderCode = genderCode;
        this.listCode = listCode;
        this.drawResults = drawResults;
    }

    @Id

    @Column(name = "tag_code", unique = true, nullable = false, length = 10)
    public String getTagCode() {
        return this.tagCode;
    }

    public void setTagCode(String tagCode) {
        this.tagCode = tagCode;
    }

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "gmu_nbr", nullable = false)
    public Gmu getGmu() {
        return this.gmu;
    }

    public void setGmu(Gmu gmu) {
        this.gmu = gmu;
    }

    @Column(name = "method_code", nullable = false, length = 1)
    public char getMethodCode() {
        return this.methodCode;
    }

    public void setMethodCode(char methodCode) {
        this.methodCode = methodCode;
    }

    @Column(name = "season_type_code", nullable = false, length = 1)
    public char getSeasonTypeCode() {
        return this.seasonTypeCode;
    }

    public void setSeasonTypeCode(char seasonTypeCode) {
        this.seasonTypeCode = seasonTypeCode;
    }

    @Column(name = "season_nbr", nullable = false)
    public int getSeasonNbr() {
        return this.seasonNbr;
    }

    public void setSeasonNbr(int seasonNbr) {
        this.seasonNbr = seasonNbr;
    }

    @Column(name = "species_code", nullable = false, length = 1)
    public char getSpeciesCode() {
        return this.speciesCode;
    }

    public void setSpeciesCode(char speciesCode) {
        this.speciesCode = speciesCode;
    }

    @Column(name = "gender_code", nullable = false, length = 1)
    public char getGenderCode() {
        return this.genderCode;
    }

    public void setGenderCode(char genderCode) {
        this.genderCode = genderCode;
    }

    @Column(name = "list_code", nullable = false, length = 1)
    public char getListCode() {
        return this.listCode;
    }

    public void setListCode(char listCode) {
        this.listCode = listCode;
    }

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "tag")
    public Set<DrawResult> getDrawResults() {
        return this.drawResults;
    }

    public void setDrawResults(Set<DrawResult> drawResults) {
        this.drawResults = drawResults;
    }

}

/**
*由hbm2java生成的标记
*/
@实体
@表（name=“tag”，catalog=“heroku_74dfffe65503eee”）
公共类标记实现java.io.Serializable{
/**
* 
*/
//私有静态最终长serialVersionUID=-5962836863381745774L；
私有字符串标记码；
私人Gmu Gmu；
私有字符方法码；
私有字符类型码；
私人住宅；
私有字符规范；
私有字符性别码；
私有字符列表码；
私有集drawResults=新哈希集（0）；
公共标签（）{
}
公共标记（字符串标记代码、Gmu Gmu、char方法代码、char季节类型代码、int季节NBR、char规范代码、，
字符性别代码，字符列表代码）{
this.tagCode=tagCode；
this.gmu=gmu；
this.methodCode=methodCode；
this.seasonTypeCode=seasonTypeCode；
this.sensitenbr=sensitenbr；
this.speciesCode=speciesCode；
this.genderCode=genderCode；
this.listCode=list
/**
 * Tag generated by hbm2java
 */
@Entity
@Table(name = "tag", catalog = "heroku_74dfffe65503eee")
public class Tag implements java.io.Serializable {

    /**
     * 
     */
//  private static final long serialVersionUID = -5962836863381745774L;
    private String tagCode;
    private Gmu gmu;

    private char methodCode;
    private char seasonTypeCode;
    private int seasonNbr;
    private char speciesCode;
    private char genderCode;
    private char listCode;
    private Set<DrawResult> drawResults = new HashSet<DrawResult>(0);

    public Tag() {
    }

    public Tag(String tagCode, Gmu gmu, char methodCode, char seasonTypeCode, int seasonNbr, char speciesCode,
            char genderCode, char listCode) {
        this.tagCode = tagCode;
        this.gmu = gmu;
        this.methodCode = methodCode;
        this.seasonTypeCode = seasonTypeCode;
        this.seasonNbr = seasonNbr;
        this.speciesCode = speciesCode;
        this.genderCode = genderCode;
        this.listCode = listCode;
    }

    public Tag(String tagCode, Gmu gmu, char methodCode, char seasonTypeCode, int seasonNbr, char speciesCode,
            char genderCode, char listCode, Set<DrawResult> drawResults) {
        this.tagCode = tagCode;
        this.gmu = gmu;
        this.methodCode = methodCode;
        this.seasonTypeCode = seasonTypeCode;
        this.seasonNbr = seasonNbr;
        this.speciesCode = speciesCode;
        this.genderCode = genderCode;
        this.listCode = listCode;
        this.drawResults = drawResults;
    }

    @Id

    @Column(name = "tag_code", unique = true, nullable = false, length = 10)
    public String getTagCode() {
        return this.tagCode;
    }

    public void setTagCode(String tagCode) {
        this.tagCode = tagCode;
    }

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "gmu_nbr", nullable = false)
    public Gmu getGmu() {
        return this.gmu;
    }

    public void setGmu(Gmu gmu) {
        this.gmu = gmu;
    }

    @Column(name = "method_code", nullable = false, length = 1)
    public char getMethodCode() {
        return this.methodCode;
    }

    public void setMethodCode(char methodCode) {
        this.methodCode = methodCode;
    }

    @Column(name = "season_type_code", nullable = false, length = 1)
    public char getSeasonTypeCode() {
        return this.seasonTypeCode;
    }

    public void setSeasonTypeCode(char seasonTypeCode) {
        this.seasonTypeCode = seasonTypeCode;
    }

    @Column(name = "season_nbr", nullable = false)
    public int getSeasonNbr() {
        return this.seasonNbr;
    }

    public void setSeasonNbr(int seasonNbr) {
        this.seasonNbr = seasonNbr;
    }

    @Column(name = "species_code", nullable = false, length = 1)
    public char getSpeciesCode() {
        return this.speciesCode;
    }

    public void setSpeciesCode(char speciesCode) {
        this.speciesCode = speciesCode;
    }

    @Column(name = "gender_code", nullable = false, length = 1)
    public char getGenderCode() {
        return this.genderCode;
    }

    public void setGenderCode(char genderCode) {
        this.genderCode = genderCode;
    }

    @Column(name = "list_code", nullable = false, length = 1)
    public char getListCode() {
        return this.listCode;
    }

    public void setListCode(char listCode) {
        this.listCode = listCode;
    }

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "tag")
    public Set<DrawResult> getDrawResults() {
        return this.drawResults;
    }

    public void setDrawResults(Set<DrawResult> drawResults) {
        this.drawResults = drawResults;
    }

}