I am trying to Internationalize my application using JSTL tag in JSP. My problem is, the content of properties file are not visible in UI.
JSP CODE
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%# taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
This Example demonstrates the basic JSTL formating tags:
<br/><br/>
Locale from client:
<b><c:out value="${pageContext.request.locale}"/></b><br/>
<fmt:setBundle basename="ApplicationResources" var="mybundle"/>
<fmt:message key="welcome.message" bundle="${mybundle}">
<fmt:param value="${param.uname}"></fmt:param>
</fmt:message>
<b>Now testing <fmt:setLocale>tag:</b><br>
Creating a ResourceBundle with client locale and setting it to <i>mybundle1</i>
variable.<br>
<fmt:setBundle basename="ApplicationResources" var="mybundle1"/>
Setting the locale to<i>it</i>(italian).<br/>
<fmt:setLocale value="it"/>
Creating a ResourceBundle with <i>it</i>(italian) locale and setting it to <i>mybundle2</i> variable.<br><br>
<fmt:setBundle basename="ApplicationResources" var="mybundle2"/>
<b>Message using <i>mybundle1</i>:</b><br>
<pre>
<fmt:message bundle="${mybundle1}" key="welcome.message">
</fmt:message>
</pre>
<br>
<b>Message using <i>mybundle2</i>:</b><br>
<pre>
<fmt:message bundle="${mybundle2}" key="welcome.message">
</fmt:message>
</pre>
</body>
</html>
The rendered output is:
This Example demonstrates the basic JSTL formating tags:
Locale from client: en_US
???welcome.message??? Now testing <fmt:setLocale>tag:
Creating a ResourceBundle with client locale and setting it to mybundle1 variable.
Setting the locale toit(italian).
Creating a ResourceBundle with it(italian) locale and setting it to mybundle2 variable.
Message using mybundle1:
???welcome.message???
Message using mybundle2:
???welcome.message???
I believe this is what we need to start with. Create two files named:
ApplicationResources.properties
ApplicationResources_it.properties
Both should contain (at least) similar entry:
welcome.message=Hello,{0}
Remove these unnecessary declarations:
<fmt:setBundle basename="ApplicationResources" var="mybundle1"/>
<fmt:setBundle basename="ApplicationResources" var="mybundle2"/>
Move <fmt:setLocale value="it"/> to the top of your page. It will set the locale for the entire page either way, I don't think there is a way to mix languages (thank God).
Related
I'm having a problem with displaying a string in jsp view. A a web framework I'm using Spring MVC.
The view (return.jsp) is like that:
<%# page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>FredomWings</title>
</head>
<body>
<b>Result -></b>
<p>${currentValue}</p>
</body>
</html>
The controller looks like that:
#RequestMapping(value="balance")
public String getBalance(Model model) {
model.addAttribute("currentValue","alalal");
return "return";
}
What is the reason for which in the jsp page only Result -> without any value is displayed?
I am doing on a MVC project using netbean IDE and I have a problem with displaying my objects on table
This is my jsp page
<%#page import="java.util.List"%>
<%#page import="java.util.ArrayList"%>
<%#page import="model.Clothes"%>
<%#page import="org.hibernate.Session"%>
<%#page import="cfg.HibernateUtil"%>
<%#page contentType="text/html" pageEncoding="UTF-8"%>
<%#taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%#taglib prefix="display" uri="http://displaytag.sf.net" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Clothes</title>
</head>
<body>
<div style="margin-left: 10%; ">
<%
Session session1 = HibernateUtil.getSessionFactory().getCurrentSession();
List<Clothes> clothes = new ArrayList<Clothes>();
session1.beginTransaction();
clothes = session1.createQuery("from Clothes").list();
session1.getTransaction();
System.out.println(clothes.size() + "aaaaaaaaa");
session1.close();
request.setAttribute("results", clothes);
%>
<display:table name="results" pagesize="10"/>
</div>
<jsp:include page="/index.htm" flush="true"/>
</body>
And the browser display an exception at line contains 'display' tag like this:"org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/jsp/clothes.jsp" Where did I do wrong, please help me, I am newbie in java web.
p/s: I add libs in my project, they are: displaytag-1.2, displaytag-export-poi-1.2, displaytag-portlet-1.2 and commons-lang-2.6.
I followed #JB Nizet instruction and it worked, just use the libs exactly the same that listed in this link: http://www.displaytag.org/1.2/displaytag/dependencies.html
However, in some PC, when using org.slf4j, your project can not work properly, just remove them from the project, it is OK!
If I don't use <% # taglibprefix = "sf" uri = "http://www.springframework.org/tags/form"%>
the application works the same. The User user object is filled with the fields of the form. Is it correct to use this approach?
Is the use of <sf:form method="POST"modelAttribute="user"> more correct?
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Inserisci nuovo utente</title>
</head>
<body>
<h2>Dati utente</h2>
<form action="/SpringMVCFormHibernate/add" method="post">
<label>Cognome</label><br/><input type="text" name="cognome"/><br/>
<label>Nome</label><br/><input type="text" name="nome"/><br/>
<label>Eta</label><br/><input type="text" name="eta"/><br/><br/>
<input type="submit" value="submit"/>
</form>
<p>Visualizza utenti</p>
<sf:label path=""></sf:label>
</body>
</html>
#Controller
public class UtenteController {
#Autowired
UtenteDAO utenteDAO;
#RequestMapping(value="/add",method=RequestMethod.POST)
public String addUtente(#ModelAttribute Utente user){
utenteDAO.inserisciUtente(user);
return "index";
}//addUtente
}//UtenteController
The major use of spring:form tag is formbacking object . If you wish to bind the model attribute object with the view fields , you can go for it .
For simple form objects you can use html forms instead . Also you can make use of spring:form tags error attributes as well.
for ex,
path attribute binds the model field name . so changes made to them are can be easily updated in the server side with your model attribute.
simply they provide dyanamic binding of objects easily . spring does those instead of manual works
A nice example to understand form handling and model attribute usage.
I am trying to create a form. Where the user need to select a file path.
This can be done in html as
<input type="file" name="inputFileName"/>
If we use html then I don't know how to map that value to "fileObject" class.
So how should I do this with the following code throwing a warning "Undefined attribute name type "
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%#taglib uri="http://www.springframework.org/tags/form" prefix="f" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<body>
<f:form method="PUT" commandName="fileObject" >
<f:input type="file" path="inputFileName"/>
</f:form>
</body>
</html>
Exception:
org.apache.jasper.JasperException: /WEB-INF/jsp/Main.jsp(9,0) Attribute type invalid for tag input according to TLD
f:input does not have attribute type as you can find it in docs
What is the best-practice for developing web-pages for both non-JS-enabled and JS-enabled pages? I am developing a Spring MVC web-application using JSP/JSTL as the view technology.
The way I work is to create a full web-page (with "html", "head", etc) tags in it. This will work on all browsers. My entire app works (however ugly-bugly) with JS disabled.
Also included in each page is some jQuery script that prettifies the page, typically turning top-level "divs" into tabs, other divs into dialogs, etc. The JS "hijacks" the underlying HTML. My JS hijacks the links and buttons, using AJAX calls to load the content into the correct dialog or tab div.
This all works nicely and I like the architecture, but I have added an optimisation such that the AJAX requests appends a "contentOnly" parameter; this is picked up by the Spring MVC view which conditionally ignores the "head", etc - i.e. it only renders the real content that the AJAX version wants. It just feels clunky.
I know I could load the entire page and discard the outer bits but this seems inefficient to load all the associated CSS and JS files which are not strictly necessary.
My question is: is there a nicer way to write this conditional formatting, should I be using a different view technology or something else, something like Velocity or FreeMarker or whatever Grails uses?
An example of my conditional: -
<%# page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%# taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<c:if test="${param.contentOnly == null}">
<!DOCTYPE html>
<html>
<head>
<%# include file="_stylesAndScripts.jsp"%>
<title>My App Title</title>
</head>
<body>
<%# include file="_header.jsp"%>
<%# include file="_menu.jsp"%>
</c:if>
<div id="leadListPanel" class="contentPanel">
<h1>My App Title</h1>
<p>The time on the server is ${serverTime}.</p>
<table id="leadTable" class="list">
... rest of content...
<c:if test="${param.contentOnly == null}">
<%# include file="_footer.jsp"%>
</body>
</html>
</c:if>
You need to include the files the other way round.
/WEB-INF/template.jsp
<!DOCTYPE html>
<html>
<head>
<%# include file="_stylesAndScripts.jsp"%>
<title>My App Title</title>
</head>
<body>
<%# include file="_header.jsp"%>
<%# include file="_menu.jsp"%>
<jsp:include page="${page}.jsp" />
<%# include file="_footer.jsp"%>
</body>
</html>
leads.jsp
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%# taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<div id="leadListPanel" class="contentPanel">
<h1>My App Title</h1>
<p>The time on the server is ${serverTime}.</p>
<table id="leadTable" class="list">
... rest of content...
And create a controller which sets leads as ${page} variable based on a specific request URL and forward to template.jsp instead. Since I don't do Spring, I can't answer in detail how to achieve it with Spring. But the following basic JSP/Servlet kickoff example should give the general idea:
#WebServlet(urlPatterns={"/pages/*"})
public class TemplateServlet extends HttpServlet {
#Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String page = request.getPathInfo();
// .. Do some other preprocessing if necessary .. and then:
request.setAttribute("page", page);
request.getRequestDispatcher("/WEB-INF/template.jsp").forward(request, response);
}
}
Invoke it as http://example.com/contextname/pages/leads to get the template displayed with leads.jsp included. Finally you should be able to invoke http://example.com/contextname/leads.jsp independently to get the sole template content.
I have used that kind of approach a few years ago with Freemarker and I don't know better way to do it.
What you could do is to create JSP-tags for those conditions so that they look nicer and hides the actual implementation. Something like this:
<t:NonAjax>
<!DOCTYPE html>
<html>
<head>
<%# include file="_stylesAndScripts.jsp"%>
<title>My App Title</title>
</head>
<body>
<%# include file="_header.jsp"%>
<%# include file="_menu.jsp"%>
</t:NonAjax>
<div id="leadListPanel" class="contentPanel">
<h1>My App Title</h1>
<p>The time on the server is ${serverTime}.</p>
<table id="leadTable" class="list">
... rest of content...
<t:NonAjax>
<%# include file="_footer.jsp"%>
</body>
</html>
</t:NonAjax>