Java org.springframework.dao.InvalidDataAccessApiUsageException：同一实体的多个表示形式

欢迎光临

我也看到过同样的问题，但解决方案对我没有帮助

当我尝试添加另一次牙医就诊时，问题就出现了。 我添加了hashCode和equals方法，但没有任何帮助。 从访问中删除cascadeType.MERGE也没有帮助。 我无法从牙医中删除cascadeType.MERGE，因为这样会出现另一个问题，即在将其添加到牙医之前必须存在该就诊

堆栈跟踪：

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: Multiple representations of the same entity [com.virtualdent.entity.Visit#1] are being merged. Detached: [Visit [id=1, day=asd, time=999]]; Detached: [Visit [id=1, day=Monday, time=12]]; nested exception is java.lang.IllegalStateException: Multiple representations of the same entity [com.virtualdent.entity.Visit#1] are being merged. Detached: [Visit [id=1, day=asd, time=999]]; Detached: [Visit [id=1, day=Monday, time=12]]
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1013)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)


Root Cause
org.springframework.dao.InvalidDataAccessApiUsageException: Multiple representations of the same entity [com.virtualdent.entity.Visit#1] are being merged. Detached: [Visit [id=1, day=asd, time=999]]; Detached: [Visit [id=1, day=Monday, time=12]]; nested exception is java.lang.IllegalStateException: Multiple representations of the same entity [com.virtualdent.entity.Visit#1] are being merged. Detached: [Visit [id=1, day=asd, time=999]]; Detached: [Visit [id=1, day=Monday, time=12]]
    org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:370)
    org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:528)
    org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61)
    org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242)
    org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:153)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:135)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
    com.sun.proxy.$Proxy46.save(Unknown Source)
    com.virtualdent.service.DentistServiceImpl.saveDentist(DentistServiceImpl.java:32)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
    org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)
    org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
    com.sun.proxy.$Proxy55.saveDentist(Unknown Source)
    com.virtualdent.controller.DentistController.saveVisit(DentistController.java:63)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)
    org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
    org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
    org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)


Root Cause
java.lang.IllegalStateException: Multiple representations of the same entity [com.virtualdent.entity.Visit#1] are being merged. Detached: [Visit [id=1, day=asd, time=999]]; Detached: [Visit [id=1, day=Monday, time=12]]
    org.hibernate.event.internal.EntityCopyNotAllowedObserver.entityCopyDetected(EntityCopyNotAllowedObserver.java:45)
    org.hibernate.event.internal.MergeContext.put(MergeContext.java:245)
    org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:285)
    org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:151)
    org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:927)
    org.hibernate.internal.SessionImpl.merge(SessionImpl.java:897)
    org.hibernate.engine.spi.CascadingActions$6.cascade(CascadingActions.java:261)
    org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:490)
    org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:415)
    org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:216)
    org.hibernate.engine.internal.Cascade.cascadeCollectionElements(Cascade.java:523)
    org.hibernate.engine.internal.Cascade.cascadeCollection(Cascade.java:455)
    org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:418)
    org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:216)
    org.hibernate.engine.internal.Cascade.cascade(Cascade.java:149)
    org.hibernate.event.internal.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:441)
    org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:307)
    org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:151)
    org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:65)
    org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:905)
    org.hibernate.internal.SessionImpl.merge(SessionImpl.java:891)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:308)
    com.sun.proxy.$Proxy43.merge(Unknown Source)
    org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:492)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:359)
    org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:200)
    org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:644)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:608)
    org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke$3(RepositoryFactorySupport.java:595)
    org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:595)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)
    org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:135)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
    com.sun.proxy.$Proxy46.save(Unknown Source)
    com.virtualdent.service.DentistServiceImpl.saveDentist(DentistServiceImpl.java:32)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
    org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)
    org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
    com.sun.proxy.$Proxy55.saveDentist(Unknown Source)
    com.virtualdent.controller.DentistController.saveVisit(DentistController.java:63)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)
    org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
    org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
    org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

我的班级：

@Entity
@Table(name="dentysta")
public class Dentist implements Serializable{

    private static final long serialVersionUID = 3128830699411486597L;

    @Id
    @GeneratedValue
    private int id;

    @Column
    private String firstName;

    @Column
    private String lastName;

    @Column
    private String specialization;

    @Column
    private int number;

    @Column
    private String address;

    @OneToMany(mappedBy="dentist",cascade= {CascadeType.DETACH,CascadeType.MERGE,CascadeType.PERSIST,CascadeType.REFRESH},fetch=FetchType.EAGER)
    private List<Patient>patients;

    @ManyToMany(mappedBy="dentists", cascade=CascadeType.ALL)
    @LazyCollection(LazyCollectionOption.FALSE)
    private List<Visit>visits;

    public Dentist() {
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getSpecialization() {
        return specialization;
    }

    public void setSpecialization(String specialization) {
        this.specialization = specialization;
    }

    public int getNumber() {
        return number;
    }

    public void setNumber(int number) {
        this.number = number;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }


    public List<Patient> getPatients() {
        return patients;
    }


    public void setPatients(List<Patient> patients) {
        this.patients = patients;
    }



    public List<Visit> getVisits() {
        return visits;
    }

    public void setVisits(List<Visit> visits) {
        this.visits = visits;
    }

    public void addPatient(Patient patient)
    {
        System.out.println("DENTIST=PATIENT+ADDER");

        if(patients==null) {
        patients=new ArrayList<>();
        }

        patient.setDentist(this);
        patients.add(patient);
    }

    public void addVisit(Visit visit)
    {
        if(visits==null)
        {
            visits=new ArrayList<>();
        }
        visit.addDentist(this);
        visits.add(visit);
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((address == null) ? 0 : address.hashCode());
        result = prime * result + ((firstName == null) ? 0 : firstName.hashCode());
        result = prime * result + id;
        result = prime * result + ((lastName == null) ? 0 : lastName.hashCode());
        result = prime * result + number;
        result = prime * result + ((patients == null) ? 0 : patients.hashCode());
        result = prime * result + ((specialization == null) ? 0 : specialization.hashCode());
        result = prime * result + ((visits == null) ? 0 : visits.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;
        Dentist other = (Dentist) obj;
        if (address == null) {
            if (other.address != null)
                return false;
        } else if (!address.equals(other.address))
            return false;
        if (firstName == null) {
            if (other.firstName != null)
                return false;
        } else if (!firstName.equals(other.firstName))
            return false;
        if (id != other.id)
            return false;
        if (lastName == null) {
            if (other.lastName != null)
                return false;
        } else if (!lastName.equals(other.lastName))
            return false;
        if (number != other.number)
            return false;
        if (patients == null) {
            if (other.patients != null)
                return false;
        } else if (!patients.equals(other.patients))
            return false;
        if (specialization == null) {
            if (other.specialization != null)
                return false;
        } else if (!specialization.equals(other.specialization))
            return false;
        if (visits == null) {
            if (other.visits != null)
                return false;
        } else if (!visits.equals(other.visits))
            return false;
        return true;
    }

}

@Entity
@Table(name="wizyta")
public class Visit implements Serializable {

    private static final long serialVersionUID = -135088128548004469L;

    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    private int id;

    @Column
    private String day;

    @Column
    private String time;

    @ManyToMany(cascade={CascadeType.DETACH,CascadeType.PERSIST,CascadeType.REFRESH,CascadeType.MERGE}, fetch=FetchType.EAGER)
    private List<Dentist>dentists;

    public Visit() {}

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getDay() {
        return day;
    }

    public void setDay(String day) {
        this.day = day;
    }

    public String getTime() {
        return time;
    }

    public void setTime(String time) {
        this.time = time;
    }

    public List<Dentist> getDentists() {
        return dentists;
    }

    public void setDentists(List<Dentist> dentists) {
        this.dentists = dentists;
    }

    @Override
    public String toString() {
        return "Visit [id=" + id + ", day=" + day + ", time=" + time +"]";
    }


    public void addDentist(Dentist dentist)
    {
        if(dentists==null)
        {
            dentists=new ArrayList<>();
        }
        dentists.add(dentist);
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((day == null) ? 0 : day.hashCode());
        result = prime * result + ((dentists == null) ? 0 : dentists.hashCode());
        result = prime * result + id;
        result = prime * result + ((time == null) ? 0 : time.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;
        Visit other = (Visit) obj;
        if (day == null) {
            if (other.day != null)
                return false;
        } else if (!day.equals(other.day))
            return false;
        if (dentists == null) {
            if (other.dentists != null)
                return false;
        } else if (!dentists.equals(other.dentists))
            return false;
        if (id != other.id)
            return false;
        if (time == null) {
            if (other.time != null)
                return false;
        } else if (!time.equals(other.time))
            return false;
        return true;
    }   
}

@实体
@表（name=“dentysta”）
公共类实现可序列化{
私有静态最终长serialVersionUID=3128830699411486597L；
@身份证
@生成值
私有int-id；
@纵队
私有字符串名；
@纵队
私有字符串lastName；
@纵队
私有字符串专门化；
@纵队
私有整数；
@纵队
私有字符串地址；
@OneToMany（mappedBy=“dentor”，cascade={CascadeType.DETACH，CascadeType.MERGE，CascadeType.PERSIST，CascadeType.REFRESH}，fetch=FetchType.EAGER）
私人病人名单；
@许多（mappedBy=“dentists”，cascade=CascadeType.ALL）
@LazyCollection（LazyCollectionOption.FALSE）
私人访问；
公共牙医（）{
}
公共int getId（）{
返回id；
}
公共无效集合id（内部id）{
this.id=id；
}
公共字符串getFirstName（）{
返回名字；
}
public void setFirstName（字符串firstName）{
this.firstName=firstName；
}
公共字符串getLastName（）{
返回姓氏；
}
public void setLastName（字符串lastName）{
this.lastName=lastName；
}
公共字符串getSpecialization（）{
回归专业化；
}
公共void集合专门化（字符串专门化）{
专业化=专业化；
}
public int getNumber（）{
返回号码；
}
公共无效集合号（整数）{
这个数字=数字；
}
公共字符串getAddress（）{
回信地址；
}
公共无效设置地址（字符串地址）{
this.address=地址；
}
公众病人名单（）{
返回病人；
}
公立医院病人（名单病人）{
这是病人=病人；
}
公众名单{
回访；
}
公众访问（列表访问）{
这个.访问量=访问量；
}
公共无效添加患者（患者）
{
System.out.println（“牙医=患者+加法器”）；
如果（患者==null）{
患者=新ArrayList（）；
}
病人。牙医（本）；
患者。添加（患者）；
}
公众参观（参观）
{
如果（访问次数==null）
{
访问次数=新建ArrayList（）；
}
看牙医（本）；
访问。添加（访问）；
}
@凌驾
公共int hashCode（）{
最终整数素数=31；
int结果=1；
result=prime*result+（（address==null）？0:address.hashCode（）；
result=prime*result+（（firstName==null）？0:firstName.hashCode（）；
结果=素数*结果+id；
result=prime*result+（（lastName==null）？0:lastName.hashCode（）；
结果=素数*结果+数字；
result=prime*result+（（patients==null）？0:patients.hashCode（）；
result=prime*result+（（专门化==null）？0:specialization.hashCode（））；
result=prime*result+（（visions==null）？0:visions.hashCode（））；
返回结果；
}
@凌驾
公共布尔等于（对象obj）{
if（this==obj）
返回true；
if（obj==null）
返回false；
如果（getClass（）！=obj.getClass（））
返回false；
牙医其他=（牙医）obj；
如果（地址==null）{
if（other.address！=null）
返回false；
}如果（！address.equals（other.address））
返回false；
if（firstName==null）{
if（other.firstName！=null）
返回false；
}else如果（！firstName.equals（other.firstName））
返回false；
if（id！=其他.id）
返回false；
if（lastName==null）{
if（other.lastName！=null）
返回false；
}else如果（！lastName.equals（other.lastName））
返回false；
如果（编号！=其他.编号）
返回false；
如果（患者==null）{
if（other.patients！=null）
返回false；
}如果（！patients.equals（other.patients））
返回false；
if（专门化==null）{
if（other.specialization！=null）
返回false；
}else如果（！specialization.equals（other.specialization））
返回false；
如果（访问次数==null）{
if（other.visions！=null）
返回false；
}如果（！visions.equals（其他访问））
返回false；
返回true；
}
}
@实体
@表（name=“wizyta”）
公共类访问实现了可序列化{
私有静态最终长serialVersionUID=-135088128548004469L；
@身份证
@GeneratedValue（策略=GenerationType.IDENTITY）
私有int-id；
@纵队
私人弦日；
@纵队
私有字符串时间；
@ManyToMany（cascade={CascadeType.DETACH，CascadeType.PERSIST，CascadeType.REFRESH，CascadeType.MERGE}，fetch=FetchType.EAGER）
私人牙医；
公众访问（）{}
公共int getId（）{
返回id；
}
公共无效集合id（内部id）{
this.id=id；
}
公共字符串getDay（）{
回归日；
}
公共无效设置日（字符串日）{
this.day=天；
}
公共字符串getTime（）{
返回时间；
}
公共无效设置时间（字符串时间）{
这个时间=时间；
}
公开名单（牙医）{
返回