el

问题 In my composite component, I iterate a list<list<javaDetailClass>> . I get all my <h:commandButon> attribute's values through value expression like #{iterator.value} . But the problem comes with attribute action , where action accepts only method expression . whereas I can assign only value expression there, resulting in MethodNotFoundException <cc:interface> <cc:attribute name="formElements" /> </cc:interface> <cc:implementation> <c:forEach items="#{cc.attrs.formElements}" var="element"> <c

问题 My dispatcher servlet is : SampleModel model = new SampleModel(); model.setModelName("someName"); request.setAttribute("model", model); request.getRequestDispatcher("nulltester.jsp").forward(request, response); Here SampleModel class has only a single property named modelName . Snippet of JSP where the request is forwarded : The undefined bar property is : ${model.bar} , <c:out value="${model.bar}"> If we hit the servlet and servlet then dispatches the request to the jsp , this code throws

问题 There's a small problem with my servlets/jsp web application. I'm trying to use jstl in jsp page. When I use any tag for example: <c:out value="${command}"/> it shows me ${command} in my browser instead of parameter 'command' value. I'm using maven (and I guess the problem is here). Here is pom xml dependencies: <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>jstl<

问题 I use "Working with server: Apache Tomcat/6.0.36 Servlet Specification: 2.5 JSP version: 2.1" In my JSP page, I used EL with this tag <c:out value="${inquiryListID.id}"/> . When it renders the page, it is displaying ${inquiryListID.id} only. Its value does not show. Please explain me what to do? 回答1: In the page directive of your jsp place this attribute isELIgnored="false" Example : <%@ page isELIgnored="false" %> This should display the value of ${inquiryListID.id} check if this works 来源：

问题 My problem is that I can't figure out how to make EL code inside <f:facet> work with <h:dataTable> var attribute. JSF code: <h:dataTable value="#{backingBean.someList}" var="absolutelyUniqueVar"> <h:column> <f:facet name="header">#{backingBean.someEntity}</f:facet> <h:outputText value="#{backingBean.someEntity.someField}"/> </h:column> <h:column> <f:facet name="header">#{absolutelyUniqueVar.anotherField}</f:facet> <h:outputText value="#{absolutelyUniqueVar.anotherField}"/> </h:column> </h

问题 How can I create a dynamic id of li tag using the foodInfo which is set to c:set ? <c:forEach var="food" varStatus="i" items="${selectedIngredientsList}"> <c:set var="foodInfo" value="${food.foodItemId}~${food.foodCategoryId}~${food.foodName}~${food.foodPortionName}"/> <ul> <li id="??"><c:out value="${food.foodName}"/> </li> </ul> </c:forEach> 回答1: I used like below to assign dynamic id with the prefix that I want to use. <li id="my_${foodInfo}"> 来源： https://stackoverflow.com/questions

问题 The following statement in JSP page encounters error near first equals occurence.What is the reason and how we can solve this problem.Please rectify me as soon as possible ${(fn:length(updateStock.todayDimensionStones)==i.count) && (!DimensionStones.status.equals('New')||!DimensionStones.isInspected.equals('No'))} Page is loaded successfully.But in JBOSS VISUAL STUDIO editor says that Multiple annotations found at this line:- Encountered "(" at line 1, column 86. Was expecting one of: "." ...

问题 I was working on a JSF 1.x example, which has some EL conflict in JSPs. the line actionListener="#{helloBean.addControls} is shooting an issue. The error is : HTTP Status 500 - /JSP/hello.jsp (line: 37, column: 2) A literal value was specified for attribute actionListener that is defined as a deferred method with a return type of void. JSP.2.3.4 does not permit literal values in this case My project Description is as follows : Package Structure : Maven Dependencies : <project xmlns="http:/

问题 As I was told and found on websites, my bean will only be executed if I have a call for it on my .xhtml . Is it possible to call my bean without any EL expression? I need this because my HomeController is calling a method that checks for the session status and on my home.xhtml and don't have any need for fall this bean, for now. 回答1: You need to look for a solution in a different direction. If you're homegrowing user authentication instead of using container managed authentication, then you

问题 I am trying to create a simple DB web application using MySQL, JDBC, Netbeans. I have the following code in a .jsp page <c:if ${sessionScope.Staff.getStatus() == sessionScope.Staff.financial_staff_status} > Financial staff </c:if> where sessionScope.Staff contains an object of Staff Data type: public class StaffData { //constants public final byte default_staff_status = 0; public final byte financial_staff_status = 1; public final byte legal_staff_status = 2; public final byte secretarial