JSTL taglib declaration reminder

Watch out for what specific JSTL version you're taglib-ing in your JSP's
If you put <%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %> and perform a basic <c:forEach> (you know... with attributes "var" for indexing and "items" for specifying the collection to loop) you might get a dumb error like this:

org.apache.jasper.JasperException: /index.jsp(65,0) According to TLD or attribute directive in tag file, attribute items does not accept any expressions
	org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
	org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
	org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:148)
	org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:1174)
	org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:821)
	org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1530)
	org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
	org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2411)
	org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2417)
	org.apache.jasper.compiler.Node$Root.accept(Node.java:495)
	org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
	org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1736)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:183)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:332)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:312)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:299)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

WTF ? you can't do a <c:forEach> without an "items" ... I've googled around and found out that you must include an updated JSTL version in your taglib i.e. <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> for it to work. Reason for this error is version incompatibility between JSP, Servlet and JSTL. Matching versions are listed below.

• JSP 1.2 , Servlet 2.3 , JSTL 1.0
  
• JSP 2.0 , Servlet 2.4 , JSTL 1.1

"Un taran la Bucuresti tot taran cauta" - Marin Preda