参考： http: //www.primefaces.org/showcase/ui/galleria.jsf
我的页面：
<p:galleria id="merchant-gallery" value="#{testController.imageIds}" var="item" autoPlay="false" >
<p:graphicImage width="300" value="#{imageStreamer.image}" >
<f:param name="id" value="#{item}" />
</p:graphicImage>
</p:galleria>
我尝试将其包含<p:galleria>在一个表格中并添加了一个<p:remoteCommand name="updateme" update="@form"/>，但在调用 updateme 之后，它只是让 Galleria 空白。
*更新
测试控制器 bean：
public List<Integer> getImageIds() {
int aId = (Integer) FacesContext.getCurrentInstance().getExternalContext().getSessionMap().get("user_id");
EntityManagerFactory emf = Persistence.createEntityManagerFactory("TEST2PU");
EntityManager em = emf.createEntityManager();
TypedQuery<Merchant> tp = em.createQuery("SELECT a FROM Account a WHERE a.id = :id", Account.class);
tp.setParameter("id", aId);
current = tp.getSingleResult();
Collection rawPhotoCollection = current.getPhotoCollection();
imageIds = new ArrayList<Integer>(rawPhotoCollection);
List<Photo> photoList = new ArrayList<Photo>(rawPhotoCollection);
for (int i = 0; i < photoList.size(); i++) {
int imageId = photoList.get(i).getId();
imageIds.set(i, imageId);
}
return imageIds;
}
imageStreamer 豆：
@EJB
private test.controller.photo.PhotoFacade ejbFacade;
public StreamedContent getImage() throws IOException {
FacesContext context = FacesContext.getCurrentInstance();
if (context.getCurrentPhaseId() == PhaseId.RENDER_RESPONSE) {
return new DefaultStreamedContent();
} else {
Map<String, String> param = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap();
String id = param.get("id");
Photo image = ejbFacade.find(Integer.valueOf(id));
return new DefaultStreamedContent(new ByteArrayInputStream(image.getImage()));
}
}