Java 找到多个具有给定标识符的行：1，用于类：com.model.Diagnosis

下面是我的代码的模型、服务实现和错误跟踪

模型类：

@Entity
@Table(name = "ph_diagnosis_history")
@JsonIdentityInfo(generator = ObjectIdGenerators.PropertyGenerator.class, property = "id",scope=Diagnosis.class)
public class Diagnosis extends AbstractEntity {
    @Column(name = "diagnosis_notes", length=255)
    @Length(max = 255, message = IprProp.MAX_LEN_255_MSG)
    private String diagnosisNote;

    @Enumerated(EnumType.STRING)
    private DiagnosisTypeEnum type;

    @Temporal(TemporalType.DATE)
    @Column(name = "diagnosis_date")
    @JsonSerialize(using = JsonDateSerializer.class)
    private Date diagnosisDate;

    @ManyToOne
    @JoinColumn(name = "patient_chart_id")
    private PatientChart patientChart;

    public String getDiagnosisNote() {
        return diagnosisNote;
    }

    public void setDiagnosisNote(String diagnosisNote) {
        this.diagnosisNote = diagnosisNote;
    }

    public DiagnosisTypeEnum getType() {
        return type;
    }

    public void setType(DiagnosisTypeEnum type) {
        this.type = type;
    }

    public Date getDiagnosisDate() {
        return diagnosisDate;
    }

    public void setDiagnosisDate(Date diagnosisDate) {
        this.diagnosisDate = diagnosisDate;
    }

    public PatientChart getPatientChart() {
        return patientChart;
    }

    public void setPatientChart(PatientChart patientChart) {
        this.patientChart = patientChart;
    }
}

我的服务：

public Diagnosis updateDiagnosis(IPRDTO clientDto, Long userId,
        Long patientChartId, DiagnosisDTO diagnosisDTO, Long diagnosisId) throws Exception {
    Diagnosis diagnosis = diagnosisRepository.findOne(diagnosisId);
    if (diagnosis!=null){
        if(diagnosis.getType().equals(DiagnosisTypeEnum.WORKING)){
            BeanCopyUtil.copyProperties(diagnosisDTO, diagnosis, true);
            return this.diagnosisRepository.saveAndFlush(diagnosis);
        }
        else{
            throw new BusinessException("updateDiagnosisValidation"); 
        }
    }
    throw new BusinessException("noDiagnosis"); 
}

我的堆栈跟踪：

 [2014-09-08 11:34:08,148] INFO  com.zurelsoft.ipr.service.IDiagnosisService- Logged In User Id [1]:Started  updateDiagnosis
    diagnosis id 2
    [2014-09-08 11:34:08,969] INFO  org.hibernate.event.internal.DefaultLoadEventListener- HHH000327: Error performing load command : org.hibernate.HibernateException: More than one row with the given identifier was found: 2, for class: com.zurelsoft.ipr.model.Diagnosis
    [2014-09-08 11:34:09,001] ERROR com.zurelsoft.ipr.service.IDiagnosisService- Logged In User Id [1]:Error Occurred updateDiagnosis
    org.springframework.orm.jpa.JpaSystemException: org.hibernate.HibernateException: More than one row with the given identifier was found: 2, for class: com.zurelsoft.ipr.model.Diagnosis; nested exception is javax.persistence.PersistenceException: org.hibernate.HibernateException: More than one row with the given identifier was found: 2, for class: com.zurelsoft.ipr.model.Diagnosis
    [2014-09-08 11:34:09,006] ERROR com.zurelsoft.ipr.client.DiagnosisWebService- org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:321)
    org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:403)
    org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:58)
    org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
    org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:163)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    com.sun.proxy.$Proxy85.findOne(Unknown Source)
    com.zurelsoft.ipr.service.impl.DiagnosisServiceImpl.updateDiagnosis(DiagnosisServiceImpl.java:76)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:51)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:51)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.aspectj.AspectJAfterThrowingAdvice.invoke(AspectJAfterThrowingAdvice.java:55)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    com.sun.proxy.$Proxy86.updateDiagnosis(Unknown Source)
    com.zurelsoft.ipr.client.DiagnosisWebService.updateDiagnosis(DiagnosisWebService.java:98)
    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.invoke(InvocableHandlerMethod.java:219)
    org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
    org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
    org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
    org.springframework.web.servlet.FrameworkServlet.doPut(FrameworkServlet.java:849)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
    org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    java.lang.Thread.run(Unknown Source)

我在这行中得到了HibernateException，尽管我的表现在有两行具有相同id

Diagnosis diagnosis = diagnosisRepository.findOne(diagnosisId);

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请任何人帮我纠正我的错误。我的代码中可能有什么错误。

听起来数据库中有多行具有相同的id值！ 你确定你的id在数据库中是唯一的吗

休眠异常

More than one row with the given identifier was found: 2, for class: com.zurelsoft.ipr.model.Diagnosis

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告诉hibernate query executes返回类诊断的多行（即2行）请启用SQL日志记录并手动执行select，并查看它从Spring文档返回的内容：

T findOne(ID id)

Retrieves an entity by its id.

似乎DiagnostisID不是主键。

Hy，它对我有用：

似乎我有两个选择：要么在一对一关系中级联所有并删除孤立项，要么在每次移除原始图纸与板材的关系时显式调用我的存储库类来查找并保存原始图纸。我选择了第一个选项，并将其添加到plate类中：

@OneToOne(mappedBy = "plate", cascade = CascadeType.ALL, orphanRemoval = true)