I'm using Apache Tile in Spring Web App,
I have to include some dependencies under certain conditions,
So I want to know if in file "tiles.xml" we can set some conditions as below ?
<definition name=".tpl1" extends=".MainTpl"
template="/WEB-INF/views/templates/tpl1.jsp">
<put-attribute name="header" value="XX" />
<put-attribute name="dashboard" value="XX" />
<if [Some condition] >
<put attribute name="isOk" value="XX />
/>
<else>
<put-attribute name="isNok" value="YY" />
/>
</definition>
I'm really not sure about this part but I want to know if it's possible or not :)
Kind regards :)
There is no condition in Apache Tiles. Instead you can compose your definition like this :
<definition name=".tpl1" extends=".MainTpl"
template="/WEB-INF/views/templates/tpl1.jsp">
<put-attribute name="header" value="XX" />
<put-attribute name="dashboard" value="XX" />
<put-attribute name="condition" value="condition.jsp" />
<put-attribute name="isOk" value="XX" />
<put-attribute name="isNOk" value="XX" />
</definition>
And in condition.jsp have something like this
<%# page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%# taglib prefix="tiles" uri="http://tiles.apache.org/tags-tiles"%>
<c:choose>
<c:when test="[some condition]">
<tiles:insertAttribute name="isOk">
</c:when>
<c:otherwise>
<tiles:insertAttribute name="isNOk">
</c:otherwise>
</c:choose>
Your question is very similar to this, you can refer to the answer there.
Related
I'm using Tiles for the first time. Trying to layout my JSP pages in my Spring MVC project.
Please take a look at what I'm doing and let me know if this is the "correct" way to do it ... my specific question is at the bottom ...
I have the file structured like this ... folder /src/main/webapp/WEB-INF/layouts/ contains ...
standard.jsp
// ...
<html>
<title><tiles:insertAttribute name="title"/></title>
// ... LOTS OF HTML ...
<tiles:insertAttribute name="header"/>
<tiles:insertAttribute name="body"/>
<tiles:insertAttribute name="footer"/>
// ... LOTS OF HTML
</html>
// ...
tiles.xml
<tiles-definitions>
<definition name="standardLayout" template="/WEB-INF/layouts/standard.jsp">
<put-attribute name="title" value="My Directory" />
<put-attribute name="header" value="/WEB-INF/layouts/header.jsp" />
<put-attribute name="body" value="" />
<put-attribute name="footer" value="" />
</definition>
</tiles-definitions>
And my viewable JSPs are in folder /src/main/webapp/WEB-INF/views/ which contains ...
tiles.xml
<tiles-definitions>
<definition name="home" extends="standardLayout">
</definition>
</tiles-definitions>
home.jsp
<%# taglib prefix="tiles" uri="http://tiles.apache.org/tags-tiles"%>
<tiles:insertDefinition name="home">
<tiles:putAttribute name = "body" value="/WEB-INF/views/home-body.jsp"/>
</tiles:insertDefinition>
home-body.jsp
<div>
// LOTS OF HTML FOR THE BODY OF THE HOME PAGE
</div>
QUESTIONS: I'd like to just have one home.jsp but it looks like I have to pull the body content (and any other content) from a separate file. Is there an appropriate way to simplify home.jsp and home-body.jsp into one file, or am I actually doing this all correctly?
You need to update your tiles.xml, standard.jsp and home.jsp as below,
tiles.xml
<tiles-definitions>
<definition name="home" extends="standardLayout">
<put-attribute name="body" value="/WEB-INF/views/home.jsp"></put-attribute>
</definition>
</tiles-definitions>
standard.jsp
<html>
<title><tiles:insertAttribute name="title"/></title>
<header>
<tiles:insertAttribute name="header"/>
</header>
<body>
<tiles:insertAttribute name="body"/>
</body>
<footer>
<tiles:insertAttribute name="footer"/>
</footer>
</html>
home.jsp
<!-- Actual body content goes here.. -->
<%# taglib prefix="tiles" uri="http://tiles.apache.org/tags-tiles"%>
<p>The content of the home page.</p>
I'm using Apache Tiles on a Sprint MVC app and I have this tiles.xml:
<tiles-definitions>
<definition name="defaultLayout" template="/WEB-INF/tiles/template/defaultLayout.jsp">
<put-attribute name="title" value="" />
<put-attribute name="header" value="/WEB-INF/tiles/template/header.jsp" />
<put-attribute name="content" value=""/>
<put-attribute name="footer" value="/WEB-INF/tiles/template/footer.jsp" />
</definition>
<definition name="home" extends="defaultLayout">
<put-attribute name="title" value="Alsa" />
<put-attribute name="content" value="/WEB-INF/pages/home.jsp" />
<put-attribute name="active" value="index" />
</definition>
</tiles-definitions>
What I'm trying to do is use the attribute active to add a class to active menu item. For that I have this in header.jsp:
<%# taglib uri="http://tiles.apache.org/tags-tiles-extras" prefix="tilesx" %>
<tilesx:useAttribute name="active" />
The problem is that everytime I try to render the page I get this error:
org.apache.tiles.template.NoSuchAttributeException: Error importing
attributes. Attribute 'active' is null
What am I doing wrong?
The trick here is to add cascade=true to your attribute so that it will be available to nested definitions and templates.
<definition name="home" extends="defaultLayout">
<put-attribute name="title" value="Alsa" />
<put-attribute name="content" value="/WEB-INF/pages/home.jsp" />
<put-attribute name="active" value="index" cascade="true"/>
</definition>
See:
https://tiles.apache.org/framework/tutorial/advanced/nesting-extending.html
You may need to declare the class. You'll also need id.
<tilesx:useAttribute name="active" id="active" class="java.lang.String"/>
Also if there are other tiles definitions in your app other than "home" and if any of them do not define an "active" attribute, you may want to set "ignore" to true as part of your definition to avoid runtime errors. More here:https://tiles.apache.org/framework/tiles-jsp/tlddoc/index.html
I'm brand new to Tiles so this is probably a very easy question. I've created a web application using Java / Spring 3 / JSPs without the use of tiles and now I'm realizing my life would be much easier with it.
I'm a bit confused on one aspect thus far, and that's defining the layouts. My problem is that in examples I've seen online you define a layout.jsp which contains the information (including tags and tags).
My question is, the "layout.jsp" file is supposed to be the generic "one-size-fits-all" type of file, but what happens when I create another file (say welcome.jsp) which should USE the layout template, but I need to define more and tags... if I define them inside of the welcome.jsp file then the rendered JSP file is not formatted correctly... i.e:
<head>
<!-- This is content from the layout.jsp file -->
<title>Welcome</title>
<link rel="shortcut icon" href="images/favicon.ico"/>
<script type="text/javascript">
// some javascript
</script>
</head>
<body>
<!-- This is content from the welcome.jsp file which is malformed -->
<head>
<script src="js/jquery.mousewheel.min.js"></script>
</head>
</body>
Any help would be greatly appreciated.
Here's my tiles.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE tiles-definitions PUBLIC
"-//Apache Software Foundation//DTD Tiles Configuration 2.0//EN"
"http://tiles.apache.org/dtds/tiles-config_2_0.dtd">
<tiles-definitions>
<definition name="baseLayout" template="/WEB-INF/jsp/layout/layout.jsp">
<put-attribute name="title" value="" />
<put-attribute name="header" value="/WEB-INF/jsp/layout/header.jsp" />
<put-attribute name="body" value="" />
<put-attribute name="footer" value="/WEB-INF/jsp/layout/footer.jsp" />
</definition>
<definition name="videos" extends="baseLayout">
<put-attribute name="title" value="Videos" />
<put-attribute name="body" value="/WEB-INF/jsp/videos.jsp" />
</definition>
</tiles-definitions>
layout.jsp
<%# taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles"%>
<%# taglib prefix="sec" uri="http://www.springframework.org/security/tags" %>
<%# include file="../tracking.jsp" %>
<!DOCTYPE HTML>
<html>
<head>
<title><tiles:insertAttribute name="title" ignore="true" /></title>
<link rel="shortcut icon" href="images/favicon.ico"/>
<link href="css/templatemo_style.css" rel="stylesheet" type="text/css" />
<link rel="stylesheet" type="text/css" href="css/jquery-ui-1.10.css" media="screen" />
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/jquery.lightbox-0.5.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
</head>
<body>
<tiles:insertAttribute name="header" />
<tiles:insertAttribute name="body" />
<tiles:insertAttribute name="footer" />
</body>
</html>
Create a new definition to change the header content:
<definition name="baseLayout" template="/WEB-INF/jsp/layout/layout.jsp">
<!-- Defined here -->
<put-attribute name="head" value="" />
<put-attribute name="title" value="" />
...
</definition>
<definition name="videos" extends="baseLayout">
<!-- Overridden here -->
<put-attribute name="head" value="/WEB-INF/jsp/videos-additionalHeadDefinitions.jsp" />
...
</definition>
And add this to you layout.jsp:
<head>
<!-- This is content from the layout.jsp file -->
<title>Welcome</title>
...
<tiles:insertAttribute name="head" />
</head>
I am using the Spring MVC framework with Apache Tiles 2. I want to be able to have multiple controllers all use the same view (different logic, some basic presentation). I can do that easily. What I want now is to have different Tiles definitions for each controller, all using the same JSP file, but each passing different template variables (page header, short description, etc). This is my Tiles template definition file:
<tiles-definitions>
<!-- Default Main Template -->
<definition name=".mainTemplate" template="/WEB-INF/templates/main.jsp">
<put-attribute name="shortTitle" value="Company ABC" type="string" />
<put-attribute name="body" value="/WEB-INF/templates/blank.jsp" />
</definition>
<!-- Overriding Templates -->
<definition name="index" extends=".mainTemplate">
<put-attribute name="title" value="Company Alpha Bravo Charlie" type="string" />
<put-attribute name="body" value="/WEB-INF/views/index.jsp" />
</definition>
<definition name="index2" extends=".mainTemplate">
<put-attribute name="title" value="Company Other Page" type="string" />
<put-attribute name="body" value="/WEB-INF/views/index.jsp" />
</definition>
</tiles-definitions>
I then try to have this /WEB-INF/views/index.jsp:
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%# taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles" %>
<h1>
Hello world, it's <tiles:getAsString name="title" />!
</h1>
When I load this into Tomcat and bring up the page, I get a long stack trace of exceptions. The top of the pile says org.apache.tiles.impl.CannotRenderException: ServletException including path '/WEB-INF/templates/main.jsp'.} with root cause org.apache.tiles.template.NoSuchAttributeException: Attribute 'title' not found. Anybody know what's going on?
I then try to have this /WEB-INF/views/index.jsp:
How do you try this? In your controller you would specify the name of the Tiles view, not one of the multiple JSP Tiles will use in order to render the page:
#RequestMapping("index2")
public String index2() {
// ...
return "index2";
}
I have a usability problem in my Spring webapp which uses Tiles as the view technology.
At the moment all of the pages display the same HEAD_TITLE and the PAGE_TITLE is page specific:
<html>
<head><title>HEAD_TITLE</title></head>
<body>
<h1>PAGE_TITLE</h1>
</body>
</html>
This is a major usability problem as the browsers history lists all different pages of the application with the same title. The reason why the HEAD_TITLE is same for all pages is that I haven't found a reasonable way to use the PAGE_TITLE as the HEAD_TITLE.
In most cases the PAGE_TITLE comes from a message bundle with <fmt:message /> tag and
some parameters are passed to it. The Tiles layout is such that the HEAD_TITLE should be already set at that point because all pages of the webapp use the same common layout which defines the <HEAD> elements of the pages amongst other stuff.
Any suggestions how to fix this usability problem? Should I set a "pageTitle" request attribute in my Spring controllers for all pages and use that as the PAGE_TITLE and also as the HEAD_TITLE? Or is it possible to somehow set the HEAD_TITLE in the page specific JSP?
Create a general definition and define headTitle and pageTitle attributes.
<definition name="threeColumnLayout" template="/WEB-INF/ThreeColumnLayout.jsp" >
<put-attribute name="headTitle" value="" />
<put-attribute name="pageTitle" value="" />
<put-attribute name="left" value="/WEB-INF/left.jsp" />
<put-attribute name="middle" value="" />
<put-attribute name="right" value="/WEB-INF/right.jsp" />
</definition>
Set appropriate values in more specific definition.
<definition name="/user/new" extends="threeColumnLayout">
<put-attribute name="headTitle" value="Administration" />
<put-attribute name="pageTitle" value="Create User" />
<put-attribute name="middle" value="WEB-INF/views/UserCreate.jsp" />
</definition>
Use <tiles:getAsString /> tag to retrieve such values in jsp page.
<head>
<title><tiles:getAsString name="headTitle"/></title>
</head>
<body>
<h1>
<title><tiles:getAsString name="pageTitle"/></title>
</h1>
</body>
Reference:- http://tiles.apache.org/framework/tiles-jsp/tagreference.html#tiles:getAsString