如何在登录时显示带欢迎消息的通知? [英] How to display notification with welcome message when logged in?
问题描述
我想使用名为Notification bar的primefaces工具在用户登录时显示欢迎消息。问题是我不知道如何触发它,只有登录成功(如果错误)密码不应显示),即使我被重定向到另一页也要显示。
I want to use a primefaces tool called Notification bar to display a message that says welcome, when the user logs in. The problem is that i don't know how to trigger it, only if the login is successful(if wrong password should not be displayed) and also to be displayed even if i am redirected to another page.
这是我的登录页面的样子:
This is how my loggin page looks like:
<ui:composition template="WEB-INF/templates/BasicTemplate.xhtml">
<!-- THE REGISTRATION FORM -->
<ui:define name="loginForm">
<h2>Login page</h2>
<h:form>
<p:panel>
<h:outputText value="*Em@il:" />
<h:inputText id="email" value="#{securityController.email}" binding="#{emailComponent}"/>
<br/>
<h:outputText value="*Lozinka: " />
<h:inputSecret id="password" value="#{securityController.password}" validator="#{securityController.validate}">
<f:attribute name="emailComponent" value="#{emailComponent}" />
</h:inputSecret>
<br/>
<span style="color: red;"><h:message for="password"
showDetail="true" /></span>
<br/>
<h:commandButton value="Login" action="#{securityController.logIn()}" onclick="topBar.show()"/>
</p:panel>
</h:form>
</ui:define>
</ui:composition>
这是进行重定向的托管bean的方法:
This is the method of the managed bean that does the redirection:
@ManagedBean
@RequestScoped
public class SecurityController {
@EJB
private IAuthentificationEJB authentificationEJB;
public String logIn() {
if (authentificationEJB.saveUserState(email, password)) {
return "main.xhtml";
} else {
return null;
}
}
通知栏位于模板中,全部是页面使用(BasicTemplate.xhtml):
The notification bar is located in a Template that all the pages use(BasicTemplate.xhtml):
<f:view contentType="text/html">
<h:head>
...
</h:head>
<h:body>
...
<p:notificationBar position="top" widgetVar="topBar" styleClass="top">
<h:outputText value="Welcome, you are now logged in!"
style="color:#FFCC00;font-size:36px;" />
</p:notificationBar>
</h:body>
</f:view>
我希望它只在用户登录正确时出现一次(如果执行了else块,则不应该出现。)
I want it to appear only once when the user gets logged in correctly(If the else block is executed, it should not appear).
我如何实现这一目标?
更新
更改了logIn()方法:
changed the logIn() method:
public String logIn() {
if (authentificationEJB.saveUserState(email, password)) {
// Pass a parameter in ussing the URL.(The notification bar will
// read this parameter)
return "main.xhtml?faces-redirect=true&login=1";
} else {
return null;
}
}
在main.xhtml添加了这个
Added this at main.xhtml
<ui:composition template="WEB-INF/templates/BasicTemplate.xhtml">
<ui:define name="mainForm">
<h2>The main page</h2>
<script type="text/javascript">
jQuery(function() {
topBar.show()
});
</script>
<p:notificationBar id="notbar" position="top" widgetVar="topBar" styleClass="top" rendered="#{param.login == 1}">
<h:outputText value="Welcome, you are now logged in!"
style="color:#FFCC00;font-size:36px;" />
</p:notificationBar>
</ui:define>
</ui:composition>
推荐答案
包括 p:notificationBar main.xhtml 中的
(从模板中删除)并将以下javascript添加到 main.xhtml :
<script type="text/javascript">
jQuery(function() { topBar.show() });
</script>
这将显示页面加载时的栏。如果我正确阅读您的代码, main.xhtml 仅在成功登录后显示。
This will show the bar when the page loads. If I read your code right, main.xhtml is only shown after successful login.
这篇关于如何在登录时显示带欢迎消息的通知?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!