When the select item value is null, then JSF won’t render <option value>, but only <option>. As consequence, browsers will submit the option’s label instead. This is clearly specified in HTML specification (emphasis mine): value = cdata [CS] This attribute specifies the initial value of the control. If this attribute is not set, the initial … Read more
This is an Eclipse quirk. Try one of the following things: Close/reopen project. Rightclick project > Validate. Project > Clean… and clean selected project. Restart Eclipse.
Just declare an <error-page> in web.xml wherein you can specify the page which should be displayed on a certain Throwable (or any of its subclasses) or a HTTP status code. E.g. <error-page> <exception-type>java.lang.Exception</exception-type> <location>/error.jsp</location> </error-page> which will display the error page on any subclass of the java.lang.Exception, but thus not java.lang.Throwable or java.lang.Error. This way … Read more
I thought everything that was not JSF was passed to the browswer for rendering? This assumption is thus wrong. Unspecified component attributes are ignored by the JSF renderers. You have basically the following options to get it to work: If you’re already on JSF 2.2 or newer, set it as a passthrough attribute. <… xmlns:a=”http://xmlns.jcp.org/jsf/passthrough”> … Read more
To handle the exception whenever the user invokes a synchronous POST request on a page while the HTTP session has been expired and the JSF view state saving method is set to server, add an <error-page> to the web.xml which catches the JSF ViewExpiredException and shows the home page. <error-page> <exception-type>javax.faces.application.ViewExpiredException</exception-type> <location>/home.xhtml</location> </error-page> To handle … Read more
Use <f:convertDateTime>. You can nest this in any input and output component. Pattern rules are same as java.text.SimpleDateFormat. <h:outputText value=”#{someBean.dateField}” > <f:convertDateTime pattern=”dd.MM.yyyy HH:mm” /> </h:outputText>
From EL 2.2 specification (get the one below “Click here to download the spec for evaluation”): 1.10 Empty Operator – empty A The empty operator is a prefix operator that can be used to determine if a value is null or empty. To evaluate empty A If A is null, return true Otherwise, if A … Read more
Facelets is a XML based view technology. XML has only five predefined entities. The is not among them. It works only when used in plain HTML or in legacy JSP (note: it doesn’t work in JSPX as that’s also XML based!). To fix this, you either need to declare the entity yourself in the … Read more
You might want to check this out: making distinctions between different kinds of JSF managed beans. Here is a description of the different bean types, as defined in the above article by Neil Griffin: Model Managed-Bean: Normally session scope. This type of managed-bean participates in the “Model” concern of the MVC design pattern. When you … Read more
Your concrete problem is caused by 2 facts: When JSF needs to decode a form submit action or a submitted input value, then it also checks if the component is rendered or not (as safeguard against hacked/tampered requests). Request scoped beans are recreated on every HTTP request (an ajax request counts also as one request!). … Read more