a4j:mediaOutput dans un composite component pose problème
Bonjour,
j'ai développé un petit site qui gère l'enregistrement et la récupération d'images en base de données.
Ma table est la suivante :
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| CREATE TABLE `portfolio` (
`ID` BIGINT(20) NOT NULL,
`DESCRIPTION` VARCHAR(255) DEFAULT NULL,
`NAME` VARCHAR(255) DEFAULT NULL,
`URL` VARCHAR(255) DEFAULT NULL,
`CONTENTTYPE` VARCHAR(255) DEFAULT NULL,
`FILENAME` VARCHAR(255) DEFAULT NULL,
`IMAGEFILE` LONGBLOB,
`IMAGESIZE` BIGINT(20) DEFAULT NULL,
PRIMARY KEY (`ID`)
) ENGINE=INNODB DEFAULT CHARSET=latin1 |
La classe entity associée est la suivante :
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| @Entity
public class Portfolio implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(generator = "Portfolio_Gen")
@TableGenerator(name = "Portfolio_Gen",
table = "ID_GEN",
pkColumnValue = "Portfolio_Gen",
valueColumnName = "GEN_VAL",
pkColumnName = "GEN_NAME",
initialValue=0,
allocationSize = 20)
private Long id;
private String name;
private String description;
private String url;
@Embedded
private Image image;
//Getters et setters
} |
avec une classe image :
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| @Embeddable
@Access(AccessType.FIELD)
public class Image implements Serializable {
private static final long serialVersionUID = 1L;
private byte[] imageFile;
private String fileName;
private long imageSize;
private String contentType;
//Getters et setters
} |
Pour m'entraîner avec les composites components, j'essaye d'afficher une image avec diverses infos la concernant :
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| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:composite="http://java.sun.com/jsf/composite"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:a4j="http://richfaces.org/a4j">
<composite:interface>
<composite:attribute name="portfolio"
required="true"/>
<composite:attribute name="createContentAction"
method-signature="void createContent(java.io.OutputStream,java.lang.Object) throws java.io.IOException"
required="true"/>
<composite:attribute name="sitePrompt"
default="#{cc.resourceBundleMap.sitePrompt}"/>
<composite:attribute name="urlPrompt"
default="#{cc.resourceBundleMap.urlPrompt}"/>
<composite:attribute name="timeStamp" required="true"/>
</composite:interface>
<composite:implementation>
<div>
<a4j:mediaOutput id="portfolioImage"
element="img"
mimeType="#{cc.attrs.portfolio.image.contentType}"
createContent="#{cc.attrs.createContentAction}"
value="#{cc.attrs.portfolio.id}"
cacheable="false">
<f:param value="#{cc.attrs.timeStamp}" name="time" />
</a4j:mediaOutput>
<p>
<h:outputText styleClass="gras"
value="#{cc.attrs.sitePrompt}"/>
<h:outputText value="#{cc.attrs.portfolio.name}"/>
</p>
<p>
<h:outputText styleClass="gras"
value="#{cc.attrs.urlPrompt}"/>
<h:outputText value="#{cc.attrs.portfolio.url}"/>
</p>
</div>
</composite:implementation>
</html> |
Enfin, la page qui doit l'afficher :
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| <?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:myComp="http://java.sun.com/jsf/composite/components/portfolio">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
<myComp:Portfolio portfolio="#{portfolioTest.portfolio}" createContentAction="#{portfolioTest.paint}" timeStamp="#{portfolioTest.timeStamp}"/>
</h:body>
</html> |
ainsi que le managedBean :
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| @ManagedBean
@RequestScoped
public class portfolioTest implements Serializable {
private static final long serialVersionUID = 1L;
@EJB
private CrudService<Portfolio> crudService;
public portfolioTest() {
}
public Portfolio getPortfolio() {
return crudService.find((long) 2);
}
public void paint(OutputStream stream, Object object) throws IOException {
Portfolio portfolio = crudService.find(object);
stream.write(portfolio.getImage().getImageFile());
stream.close();
}
public long getTimeStamp() {
return System.currentTimeMillis();
}
} |
Le soucis que j'ai c'est que ça ne fonctionne pas.
Lorsque que je lance la page web qui doit m'afficher le composite component, j'ai l'erreur suivante :
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| ATTENTION: StandardWrapperValve[Faces Servlet]: PWC1406: Servlet.service() for servlet Faces Servlet threw exception
javax.faces.FacesException: Unable to resolve composite component from using page using EL expression '#{cc.attrs.createContentAction}'
at com.sun.faces.facelets.tag.TagAttributeImpl$AttributeLookupMethodExpression.invoke(TagAttributeImpl.java:444)
at org.richfaces.resource.MediaOutputResource.encode(MediaOutputResource.java:62)
at org.richfaces.resource.UserResourceWrapperImpl.encode(UserResourceWrapperImpl.java:188)
at org.richfaces.resource.ResourceHandlerImpl.handleResourceRequest(ResourceHandlerImpl.java:222)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:591)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:662) |
Je précise que si je supprime la balise a4j:mediaOutput les informations (name et url) sont bien récupérées en bases.
J'ai pas trouvé d'utilisation de a4j:mediaOutput dans un composite component sur le web, donc la je sèche carrément d'où ce message sur le forum.
Merci d'avance pour votre aide.
