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我有2个类Games和Fouls，游戏中有很多犯规。用户用游戏id发送一个参数来找到他想要的game，之后currentGame变量被创建。它的类型是Game。我有一个datatable这打印在当前游戏中的犯规提交后从数据库检索到更新变量
setCurentGame setter被称为形式页的主体onload。
到目前为止一切正常，但是当我添加一个新的foul，没有添加到数据表中，我的假设是游戏已经被检索（因为当前的游戏是之前创建的），所以新的犯规是在数据库中而不是在游戏currentGame中。
有没有什么办法可以在我每次犯规添加犯规时更新currentGame？
我曾尝试刷新页面，甚至打造犯规后，再次拨打seeter但是毫无效果
的datatable看起来是这样的：
<p:dataTable id="datalist" value="#{gameController.currentGame.foulCollection}" var="item">
<f:facet name="{exporters}">
</f:facet>
<p:ajax event="rowSelect" update="createButton viewButton editButton deleteButton"/>
<p:ajax event="rowUnselect" update="createButton viewButton editButton deleteButton"/>
<p:column width="32" sortBy="#{item.id}" filterBy="#{item.id}">
<f:facet name="header">
<h:outputText value="#{bundle.ListFoulTitle_id}"/>
</f:facet>
<h:outputText value="#{item.id}"/>
</p:column>
<p:column sortBy="#{item.quarter}" filterBy="#{item.quarter}">
<f:facet name="header">
<h:outputText value="#{bundle.ListFoulTitle_quarter}"/>
</f:facet>
<h:outputText value="#{item.quarter}"/>
</p:column>
<p:column sortBy="#{item.foultime}" filterBy="#{item.foultime}">
<f:facet name="header">
<h:outputText value="#{bundle.ListFoulTitle_foultime}"/>
</f:facet>
<h:outputText value="#{item.foultime}"/>
</p:column>
<f:facet name="footer">
<p:commandButton id="createButton" icon="ui-icon-plus" value="#{bundle.Create}" actionListener="#{foulController.prepareCreate}" update=":FoulCreateForm" oncomplete="PF('FoulCreateDialog').show()"/>
</f:facet>
</p:dataTable>
GameController豆：
package onisiforos.fouls.classes;
import onisiforos.fouls.db.Game;
import onisiforos.fouls.classes.util.JsfUtil;
import onisiforos.fouls.classes.util.JsfUtil.PersistAction;
import onisiforos.fouls.bean.GameFacade;
import java.io.Serializable;
import java.util.List;
import java.util.ResourceBundle;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.EJB;
import javax.ejb.EJBException;
import javax.inject.Named;
import javax.enterprise.context.SessionScoped;
import javax.faces.bean.ManagedProperty;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.FacesConverter;
@Named("gameController")
@SessionScoped
public class GameController implements Serializable {
@EJB
private onisiforos.fouls.bean.GameFacade ejbFacade;
private List<Game> items = null;
private Game selected;
private Game currentGame;
public Game getCurrentGame() {
return currentGame;
}
public void setCurrentGame() {
int gid =
Integer.parseInt(FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("gameid"));
Game cg = getGame(gid);
this.currentGame = cg;
}
public GameController() {
}
public Game getSelected() {
return selected;
}
public void setSelected(Game selected) {
this.selected = selected;
}
protected void setEmbeddableKeys() {
}
protected void initializeEmbeddableKey() {
}
private GameFacade getFacade() {
return ejbFacade;
}
public Game prepareCreate() {
selected = new Game();
initializeEmbeddableKey();
return selected;
}
public void create() {
setCurrentGame()
persist(PersistAction.CREATE, ResourceBundle.getBundle("/Bundle").getString("GameCreated"));
updateCurrentGame();
if (!JsfUtil.isValidationFailed()) {
items = null;
}
}
public void update() {
persist(PersistAction.UPDATE, ResourceBundle.getBundle("/Bundle").getString("GameUpdated"));
}
public void destroy() {
persist(PersistAction.DELETE, ResourceBundle.getBundle("/Bundle").getString("GameDeleted"));
if (!JsfUtil.isValidationFailed()) {
selected = null; // Remove selection
items = null;
}
}
public List<Game> getGames() {
if (items == null) {
items = getFacade().findAll();
}
return items;
}
private void persist(PersistAction persistAction, String successMessage) {
if (selected != null) {
setEmbeddableKeys();
try {
if (persistAction != PersistAction.DELETE) {
getFacade().edit(selected);
} else {
getFacade().remove(selected);
}
JsfUtil.addSuccessMessage(successMessage);
} catch (EJBException ex) {
String msg = "";
Throwable cause = ex.getCause();
if (cause != null) {
msg = cause.getLocalizedMessage();
}
if (msg.length() > 0) {
JsfUtil.addErrorMessage(msg);
} else {
JsfUtil.addErrorMessage(ex, ResourceBundle.getBundle("/Bundle").getString("PersistenceErrorOccured"));
}
} catch (Exception ex) {
Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, null, ex);
JsfUtil.addErrorMessage(ex, ResourceBundle.getBundle("/Bundle").getString("PersistenceErrorOccured"));
}
}
}
public Game getGame(java.lang.Integer id) {
return getFacade().find(id);
}
public List<Game> getItemsAvailableSelectMany() {
return getFacade().findAll();
}
public List<Game> getItemsAvailableSelectOne() {
return getFacade().findAll();
}
@FacesConverter(forClass = Game.class)
public static class GameControllerConverter implements Converter {
@Override
public Object getAsObject(FacesContext facesContext, UIComponent component, String value) {
if (value == null || value.length() == 0) {
return null;
}
GameController controller = (GameController) facesContext.getApplication().getELResolver().
getValue(facesContext.getELContext(), null, "gameController");
return controller.getGame(getKey(value));
}
java.lang.Integer getKey(String value) {
java.lang.Integer key;
key = Integer.valueOf(value);
return key;
}
String getStringKey(java.lang.Integer value) {
StringBuilder sb = new StringBuilder();
sb.append(value);
return sb.toString();
}
@Override
public String getAsString(FacesContext facesContext, UIComponent component, Object object) {
if (object == null) {
return null;
}
if (object instanceof Game) {
Game o = (Game) object;
return getStringKey(o.getId());
} else {
Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, "object {0} is of type {1}; expected type: {2}", new Object[]{object, object.getClass().getName(), Game.class.getName()});
return null;
}
}
}
}
是您的托管bean会话作用域还是请求作用域？我认为setter方法不适合从数据库中检索currentGame，你可以使用@PostConstruct方法来做到这一点（如果你的bean是请求作用域）。 –
感谢您的回应。我的bean的SessionScoped。 @Mojtaba Safaeian – user784512
请添加您的完整xhtml和豆类代码 –