java.lang.IllegalArgumentException：來自託管類型[T]的屬性[A]不存在

我試圖做一個搜索頁面，使用JPA 2.0 Criteria API從我的數據庫中檢索一些數據。每次我嘗試執行搜索時，都會收到相同的異常錯誤。java.lang.IllegalArgumentException：來自託管類型[T]的屬性[A]不存在

這裏是我的搜索方法：

public List<Matches> search(SearchCommercialsDTO searchCommercialsDTO) { 

    CriteriaBuilder builder = em.getCriteriaBuilder(); 
    CriteriaQuery<Matches> criteria = builder.createQuery(Matches.class); 
    Root<Matches> matchesRoot = criteria.from(Matches.class); 
    criteria.select(matchesRoot); 

    List<Predicate> predicateList = new ArrayList<Predicate>(); 

    Predicate date, equipmentName, channelCode, advertiserName, agencyName, productName, duration; 

    if(!ObjectUtil.isEmpty(searchCommercialsDTO.getEquipmentName())) { 
     equipmentName = builder.like(matchesRoot.get("ID_RECORDER_FILES.EQUIPMENT_NAME").as(String.class), searchCommercialsDTO.getEquipmentName()); 
     predicateList.add(equipmentName); 
    } 
    if(!ObjectUtil.isEmpty(searchCommercialsDTO.getChannelCode())) { 
     channelCode = builder.equal(matchesRoot.get("ID_RECORDER_FILES.CHANNEL_CODE"), searchCommercialsDTO.getChannelCode()); 
     predicateList.add(channelCode); 
    } 
    if(!ObjectUtil.isEmpty(searchCommercialsDTO.getAdvertiserName())) { 
     advertiserName = builder.equal(matchesRoot.get("ID_SOURCE_MATERIAL.ADVERTISER_NAME"), searchCommercialsDTO.getAdvertiserName()); 
     predicateList.add(advertiserName); 
    } 
    if(!ObjectUtil.isEmpty(searchCommercialsDTO.getAgencyName())) { 
     agencyName = builder.equal(matchesRoot.get("ID_SOURCE_MATERIAL.AGENCY_NAME"), searchCommercialsDTO.getAgencyName()); 
     predicateList.add(agencyName); 
    } 
    if(!ObjectUtil.isEmpty(searchCommercialsDTO.getProductName())) { 
     productName = builder.equal(matchesRoot.get("ID_SOURCE_MATERIAL.PRODUCT_NAME"), searchCommercialsDTO.getProductName()); 
     predicateList.add(productName); 
    } 

    Predicate[] predicates = new Predicate[predicateList.size()]; 
    predicateList.toArray(predicates); 
    criteria.where(predicates); 

    return em.createQuery(criteria).getResultList(); 
}

當它試圖執行此部分：

equipmentName = builder.like(matchesRoot.get("ID_RECORDER_FILES.EQUIPMENT_NAME").as(String.class), searchCommercialsDTO.getEquipmentName());

它拋出以下異常：

java.lang.IllegalArgumentException: The attribute [ID_RECORDER_FILES.EQUIPMENT_NAME] from the managed type [[email protected]:Matches [ javaType: class net.checkmidia.auditoria.entity.Matches descriptor: RelationalDescriptor(net.checkmidia.auditoria.entity.Matches --> [DatabaseTable(MATCHES)]), mappings: 12]] is not present. 
    at org.eclipse.persistence.internal.jpa.metamodel.ManagedTypeImpl.getAttribute(ManagedTypeImpl.java:147) 
    at org.eclipse.persistence.internal.jpa.querydef.FromImpl.get(FromImpl.java:312) 
    at net.checkmidia.auditoria.business.MatchesBO.search(MatchesBO.java:50) 
    at net.checkmidia.auditoria.session.MatchesSession.searchMatches(MatchesSession.java:47) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052) 
    at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124) 
    at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388) 
    at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619) 
    at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800) 
    at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571) 
    at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:42) 
    at sun.reflect.GeneratedMethodAccessor126.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861) 
    at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800) 
    at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571) 
    at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162) 
    at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144) 
    at sun.reflect.GeneratedMethodAccessor72.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861) 
    at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800) 
    at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370) 
    at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5360) 
    at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348) 
    at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:214) 
    ... 51 more

這是怎麼引起的我該如何解決它？

來源

2013-03-22 Gabriel Bombardi

向我們展示您的ejb異常跟蹤。 – 2013-03-22 13:04:36

對不起！異常追蹤現在存在問題。我認爲這個問題是關於這個事實，我需要訪問一些數據庫中的其他表與主錶鏈接，在這種情況下，匹配。這就是爲什麼我的matchesRoot.get與我的代碼的某些部分中的字符串「idRecorderFiles.someattribute」，但我不知道這是否真的有效！ – 2013-03-22 14:59:40

變化

matchesRoot.get("ID_RECORDER_FILES.EQUIPMENT_NAME")

到

matchesRoot.get("ID_RECORDER_FILES").get("EQUIPMENT_NAME")

，並驗證「ID_RECORDER_FILES」是你的Java類Matches的字段的名稱，而「EQUIPMENT_NAME」是一個字段的名稱「ID_RECORDER_FILES」字段的類。

方法get()取屬性的名稱，所以您必須僅傳遞該ID，然後使用生成的Path來獲取包含在該對象中的字段。

來源

2013-03-23 02:24:40 dsh

matchesRoot.get（「ID_RECORDER_FILES」）。get（「EQUIPMENT_NAME」）爲我做了詭計。

來源

2014-01-03 20:39:50 user2296739

java.lang.IllegalArgumentException：來自託管類型[T]的屬性[A]不存在

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