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我尝试使用以下代码从我的 Backing-Bean 创建一个对话框：

<i>Map<String, Object> options = new HashMap<String, Object>();
        options.put("modal", true);
        options.put("draggable", true);
        options.put("resizable", false);
        options.put("closable", true);
        options.put("contentHeight", 240);
        options.put("contentWidth", 500);

        // hint: available options are modal, draggable, resizable, width,
        // height, contentWidth and contentHeight
        RequestContext.getCurrentInstance().openDialog(
                "/verwaltung/registrierung.xhtml", options, null);</i>

这是我的对话框：

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">

<h:head>

</h:head>

<h:body>
    <h:form id="form">
        <h:panelGrid columns="2" var="Registrierung">
            <p:outputLabel value="Benutzer:"
                style="font-family: Arial, Helvetica, sans-serif;font-size:small;"></p:outputLabel>
            <p:inputText
                style="font-family: Arial, Helvetica, sans-serif;font-size:small;"
                required="
                true" value="#{userBean.user.username}"></p:inputText>
            <p:outputLabel value="E-Mail:"
                style="font-family: Arial, Helvetica, sans-serif;font-size:small;"></p:outputLabel>
            <p:inputText
                style="font-family: Arial, Helvetica, sans-serif;font-size:small;"
                required="
                true" value="#{userBean.user.email}"></p:inputText>
            <p:outputLabel value="Passwort:"
                style="font-family: Arial, Helvetica, sans-serif;font-size:small;"></p:outputLabel>
            <p:inputText
                style="font-family: Arial, Helvetica, sans-serif;font-size:small;"
                required="
                true" value="#{userBean.user.password}"></p:inputText>
            <p:outputLabel value="Passwort wiederholen:"
                style="font-family: Arial, Helvetica, sans-serif;font-size:small;"></p:outputLabel>
            <p:inputText
                style="font-family: Arial, Helvetica, sans-serif;font-size:small;"
                required="
                true" value="#{userBean.user.retypePassword}"></p:inputText>
        </h:panelGrid>

        <p:commandButton value="Anmelden" ajax="false"
            actionListener="#{menuBean.hideRegisterDialog}"
            style="margin-top:20px;font-size:small;"
            icon="ui-icon ui-icon-arrow-1-e">
            <p:ajax event="dialogReturn" update="form" />
        </p:commandButton>
    </h:form>
</h:body>

</html><i>

我想在按下命令按钮后再次销毁对话框。

和：

public void hideRegisterDialog() {
        RequestContext.getCurrentInstance().closeDialog(null);
    }

但对话框仍然出现。

4

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