el

Difference between client id generated by component.clientId and p:component()

时光总嘲笑我的痴心妄想 提交于 2019-12-04 13:08:37
I am trying to retrieve the client id of a h:panelGroup that is within a p:dataList. I tried 2 approaches: 1.Using component.clientId e.g: <h:panelGroup id="listItem"> <h:outputText value="#{component.clientId}" /> </h:panelGroup> 2.Using p:component() e.g: <h:panelGroup id="listItem"> <h:outputText value="#{p:component('listItem')}" /> </h:panelGroup> Please note that this panel group is within a datalist. Now, the client ids generates in both the cases is different. (1) does not have the value 'listItem' appended to the client id while (2) has the value 'listItem' in the generated clientId.

How to use square bracket in EL JSF

被刻印的时光 ゝ 提交于 2019-12-04 12:36:28
I have seen people using square bracket in JSF, and I am not sure if I understand its use correctly. So maybe an JSF guru can help me understand it 1.So let say I have this #{bean.x} and x is a two dimensional array (x[][]), how do I display x[0] using EL? I would imagine that I need to use square bracket in this case. I think I use #{bean.x[0]} , but I got exception. 2.The second scenario is from BalusC code Pass Argument to a composite-component action attribute <composite:interface> <composite:attribute name="bean" type="java.lang.Object" /> <composite:attribute name="action" type="java

param : implicit EL (Expression Language) object in JSP

戏子无情 提交于 2019-12-04 12:14:03
问题 What if I have URL like: servlet.jsp?myparam=myvalue These 2 ELs should return output "myvalue" , but I actually don't understand why?: ${param.values["myparam"]["0"]} ${param.values.myparam[0]} 回答1: Where did you get this information from? This won't work in standard JSP 2.1 EL. The correct syntax would be: ${param["myparam"]} ${param.myparam} In the first example, singlequotes are also allowed and actually more preferred. ${param['myparam']} It can even be another EL variable in any scope:

Access the size of a collection in JSP/JSTL/EL [duplicate]

感情迁移 提交于 2019-12-04 08:26:30
问题 This question already has answers here : Check a collection size with JSTL (4 answers) Closed 3 years ago . I have a List variable called services in my JSP page. I need to add some markup to the page if there's more than 1 element in the list. What I'd like to do is... <c:if test="${services.size() gt 1}"> <!-- markup... --> </c:if> But you can't invoke methods on Java objects in EL (I think this is perhaps the 364823782 time I've regretted that fact). You can only access getters on Java

Code assist in (jsp /jstl) view for Spring MVC model objects in Eclipse

*爱你&永不变心* 提交于 2019-12-04 07:24:07
In Spring MVC when placing an object in the view model like so: public String getUser( Model model ) { //...fetch user... model.addAttribute( "user", user ); return "viewName"; } and accessing it's values in the JSP / JSTL view like this: ... <p> ${user.name} </p> ... I'm wondering if it is possible to have code assist for the user object in the view? The IDE I'm using is MyEclipse but it would be interesting to know if this is possible in other editors as well. Thanks. Kannan Ekanath Ideally you want the JSP/JSTL standard tags to be agnostic of the technology that supplies these objects but

Is there an equivalent of '==' from Java in EE 6 JSF EL

醉酒当歌 提交于 2019-12-04 06:38:30
问题 I am working in JSF 2 with Primefaces 3.4 and I found an example where '==' in my xhtml does not behave like '==' in Java. I could not find details for '==' operator in Java EE 6 documentation. What does it exactly do? Is there an equivalent of Java '==' for Objects in EL? 回答1: Is there an equivalent of Java '==' for Objects in EL? Looks like it is not, but you don't really need it. EL == (and eq ) will use the equals method when comparing object references, and it already supports null

jsf passing parameters in a method expression failes in ViewScoped bean

送分小仙女□ 提交于 2019-12-04 06:33:25
问题 I have jsf page backed by a ViewScoped bean which lists a bunch of transactions like below <ui:repeat value="#{transactions_byaccount.pageList}" var="item"> <tr class="dataRow"> <td class="dataCell cltdtransactionsdatetransaction"> <h:outputText value="#{item.datetransaction}" > <f:convertDateTime pattern="EEE dd-MMM-yyyy HH:mm" /> </h:outputText> </td> ... ... <td colspan="2"> <span class="pagerDBspan" style="font-weight: bold;"> <h:commandLink action="#{transactions_byaccount.updateCategory

javax.el.PropertyNotFoundException: The class ' does not have a readable property 'preference'

我是研究僧i 提交于 2019-12-04 06:32:16
问题 I have been through almost all the related questions on SO but couldn't find the answer because I don't have the issues that were the cause of errors for other still I've same error result. I have implemented a primefaces selectBooleanButton element and included the bean code as per that only. The error means that the system is unable to read the property of the managedBean but I have proper getter/setter methods as it should be for boolean property. Below is the code for reference: View

Cant access some (Capitalized) fields in JSF controller?

谁说胖子不能爱 提交于 2019-12-04 06:02:04
I Cant access some (Capitalized) fields in controllers For Example My controller (*.java) package com.co.controller; public class MyController { // fields private String FIELD; private String F1; // .... Controller code // Setters and Getters public String getFIELD() { return FIELD; } public void setFIELD(String fIELD) { FIELD = fIELD; } public String getF1() { return F1; } public void setF1(String f1) { F1 = f1; } } My Screen (*.xhtml) When i try to use <h:panelGrid> <h:outputText value="#{myController.FIELD}" /> <h:outputText value="#{myController.F1}" /> </h:panelGrid> The result is F1

How to pass EL argument in method?

*爱你&永不变心* 提交于 2019-12-04 05:02:11
问题 I have just a question in passing parameters on backing beans method. I would like pass an EL value between a method parameters like: <p:selectOneMenu id="somsgroup" value="#{store_itemController.filter_sgroup}"> <f:selectItems value="#{commonDataFunctions.getItemByName('store_sgroup', 'id', 'title', '[tb:store_sgroup][fd:title]=${store_itemController.filter_group}', '[tb:store_sgroup][fd:title]', true)}"/> </p:selectOneMenu> it seems like ${store_itemController.filter_group} it is not