javax.el.PropertyNotFoundException:找不到类型为org.hibernate.collection.internal.PersistentSet的属性 [英] javax.el.PropertyNotFoundException: Property not found on type org.hibernate.collection.internal.PersistentSet
问题描述
我尝试从关联ManyToMany中恢复数据,但我不能,这是我的代码。
实体产品:
@Entity
public class实现Serializable {
@Id
@Column(name =Produit_ID)
@GeneratedValue
私人长ID;
私人字符串dq;
私人字符串icForme;
private String ich;
私人字符串icht;
@ManyToMany(cascade = {CascadeType.ALL})
@JoinTable(name =produit_terminal,
joinColumns = {@ JoinColumn(name =Produit_ID)},
inverseJoinColumns = {@ JoinColumn(name =Terminal_ID)})
private Set< Terminal> terminals = new HashSet< Terminal>();
// getter setter
实体终端:
@Entity
public class Terminal实现Serializable {
@Id
@GeneratedValue
@Column(name =Terminal_ID)
私人长ID;
private String crimpkontakt;
私人字符串设备;
private String geometrie;
私人字符串dcbt;
private String icb;
private String ak;
@ManyToMany(mappedBy =terminals)
private Set<产品> produit = new HashSet< Produit>();
// getter setter
Class:ModuleJPADao
public List<产品> parProduit(String cat){
cat =%+ cat +%;
查询查询= getEntityManger()。createQuery(from+ getPersistentClass()。getSimpleName()
+u其中u.produit LIKE:cat)。setParameter(cat,cat);
列表<产品> module =(List)query.getResultList();
返回模块;
$ b $ / code>
Class:ModuleService
public List<产品> tousModuleProduit(String produit){
if(produit!= null){
return moduleDao.parProduit(produit);
}
else {
return null;
$ / code $ / pre
main-flow.xml
< view-state id =accueilview =accueil.xhtml>
< on-render>
< evaluate expression =moduleService.tousModuleProduit(module.getProduit())
result =viewScope.recherche/>
< / on-render>
< / view-state>
file.xhtml
< p:accordionPanel value =#{recherche}var =car>
< h:panelGrid columns =4cellspacing =20>
< p:outputLabel value =ICHT:/>
< p:inputText value =#{car.icht}/>
< p:outputLabel value =terminals:/>
< h:form>
< h:dataTable value =#{car.terminals}var =der>
< p:栏>
< h:outputText value =#{der.geometrie}/>
< / p:栏>
< / h:dataTable>
< / h:表格>
< / h:panelGrid>
....
我无法获得geometrie的值;我得到了这个错误:
javax.el.PropertyNotFoundException:/WEB-INF/flows/main/accueil.xhtml @ 84,53 value =#{ der.geometrie}:未在类型org.hibernate.collection.internal.PersistentSet中找到属性'geometrie'
解决方案
< h:dataTable value =#{car.terminals}var =der>
< p:栏>
< h:outputText value =#{der.geometrie}/>
javax.el.PropertyNotFoundException:未在类型org.hibernate.collection.internal上找到属性'geometrie' .PersistentSet
因此,#{car.terminals}
是一个组< E - 代替;
。 < h:dataTable>
,< p:dataTable>
和< ui :repeat>
组件不支持遍历 Set< E>
。然后,#{der}
将基本上代表 Set < / code>本身。迭代 Set< E>
的内置支持将在未来的JSF 2.3版本中出现。
如果它不是一个用 List< E>替换 Set< E>
;
,然后从下面获取一个数组:
< h:dataTable value =#{car.terminals.toArray()}var =terminal>
I try to recuperate data from association ManyToMany but i can't, this is my code.
Entity Produit :
@Entity
public class Produit implements Serializable {
@Id
@Column(name="Produit_ID")
@GeneratedValue
private Long id;
private String dq;
private String icForme;
private String ich;
private String icht;
@ManyToMany(cascade = {CascadeType.ALL})
@JoinTable(name="produit_terminal",
joinColumns={@JoinColumn(name="Produit_ID")},
inverseJoinColumns={@JoinColumn(name="Terminal_ID")})
private Set<Terminal> terminals = new HashSet<Terminal>();
//getter setter
Entity Terminal :
@Entity
public class Terminal implements Serializable{
@Id
@GeneratedValue
@Column(name="Terminal_ID")
private Long id;
private String crimpkontakt;
private String equipment;
private String geometrie;
private String dcbt;
private String icb;
private String ak;
@ManyToMany(mappedBy="terminals")
private Set<Produit> produit = new HashSet<Produit>();
//getter setter
Class : ModuleJPADao
public List<Produit> parProduit(String cat){
cat = "%" + cat + "%";
Query query = getEntityManger().createQuery( "from "+ getPersistentClass().getSimpleName()
+" u where u.produit LIKE :cat").setParameter( "cat", cat );
List<Produit> module = (List) query.getResultList();
return module;
}
Class : ModuleService
public List<Produit> tousModuleProduit(String produit) {
if(produit!= null){
return moduleDao.parProduit(produit);
}
else{
return null;
}
}
main-flow.xml
<view-state id="accueil" view="accueil.xhtml">
<on-render>
<evaluate expression="moduleService.tousModuleProduit(module.getProduit())"
result="viewScope.recherche" />
</on-render>
</view-state>
file.xhtml
<p:accordionPanel value="#{recherche}" var="car">
<p:tab title="IcForme : #{car.icForme}">
<h:panelGrid columns="4" cellspacing="20">
<p:outputLabel value="ICHT: " />
<p:inputText value="#{car.icht}" />
<p:outputLabel value="terminals : " />
<h:form>
<h:dataTable value="#{car.terminals}" var="der" >
<p:column>
<h:outputText value="#{der.geometrie}" />
</p:column>
</h:dataTable>
</h:form>
</h:panelGrid>
....
i can't get the value of geometrie; i got this erreur:
javax.el.PropertyNotFoundException: /WEB-INF/flows/main/accueil.xhtml @84,53 value="#{der.geometrie}": Property 'geometrie' not found on type org.hibernate.collection.internal.PersistentSet
解决方案
<h:dataTable value="#{car.terminals}" var="der">
<p:column>
<h:outputText value="#{der.geometrie}" />
javax.el.PropertyNotFoundException: Property 'geometrie' not found on type org.hibernate.collection.internal.PersistentSet
Thus, the #{car.terminals}
is a Set<E>
. The <h:dataTable>
, <p:dataTable>
and <ui:repeat>
components doesn't support iterating over a Set<E>
. The #{der}
will then basically represent the Set<E>
itself. The builtin support for iterating over Set<E>
will come in future JSF 2.3 version.
If it's not an option to replace Set<E>
by a List<E>
, then just get an array out of it as below:
<h:dataTable value="#{car.terminals.toArray()}" var="terminal">
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