JSTL support is dependent on the server/servletcontainer used. Some ships with JSTL, others don’t. This is regardless of the JSP/Servlet version. Usually, normal JEE servers such as WildFly/Payara/TomEE already ship with JSTL out the box, but barebones servletcontainers such as Tomcat/Jetty/Undertow don’t. For them you’ll need to install JSTL yourself. It’s actually pretty simple (assuming … Read more
Here, <c:forEach var=”statusHistory” items=”statusHistoryList”> You’re supplying the items attribute of <c:forEach> with a plain vanilla String with a value of “statusHistoryList” which in turn indeed doesn’t have a getTimestamp() method. You need to reference it using an EL expression ${…} instead. <c:forEach var=”statusHistory” items=”${statusHistoryList}”> ${statusHistory.timestamp} </c:forEach>
So you want to evaluate a scriptlet variable in EL? Store it as a request attribute. <% String var = “some”; request.setAttribute(“var”, var); %> <c:if test=”${param.variable1 == ‘Add’ && var == ‘some’}”> However, this makes no sense. You should avoid scriptlets altogether and use JSTL/EL to prepare this variable. So if you make the functional … Read more
Files in /WEB-INF folder are not public accessible. Put the CSS files one level up, in the WebContent folder, and ensure that they are accessible by entering their URL straight in the browser address bar. Also, the URL which you specify in the <link href> must be relative to the request URL (which you see … Read more
Yes, but it’s clunky as hell, e.g. <c:choose> <c:when test=”${condition1}”> … </c:when> <c:when test=”${condition2}”> … </c:when> <c:otherwise> … </c:otherwise> </c:choose>
You could use <jsp:include> for this. <jsp:include page=”/servletURL” /> It’s however usually the other way round. You call the servlet which in turn forwards to the JSP to display the results. Create a Servlet which does something like following in doGet() method. request.setAttribute(“result”, “This is the result of the servlet call”); request.getRequestDispatcher(“/WEB-INF/result.jsp”).forward(request, response); and in … Read more
The value for the useBean class attribute com.b5 is invalid. So you have a <jsp:useBean id=”b5″ class=”com.b5″ /> This exception is typical when the following happening “behind the scenes” fails: com.b5 b5 = new com.b5(); Apart from the requirement that it should be placed inside a package (which you thus correctly did), the bean should … Read more
What you’re doing is a static include. A static include is resolved at compile time, and may thus not use a parameter value, which is only known at execution time. What you need is a dynamic include: <jsp:include page=”…” /> Note that you should use the JSP EL rather than scriptlets. It also seems that … Read more
Should I use JSTL ? Yes. You can use <c:if> and <c:choose> tags to make conditional rendering in jsp using JSTL. To simulate if , you can use: <c:if test=”condition”></c:if> To simulate if…else, you can use: <c:choose> <c:when test=”${param.enter==’1′}”> pizza. <br /> </c:when> <c:otherwise> pizzas. <br /> </c:otherwise> </c:choose>
You can’t nest EL expressions like that. You can achieve the concrete functional requirement only if you know the scope of those variables beforehand. This way you can use the brace notation while accessing the scope map directly. You can use <c:set> to create a new string variable in EL scope composed of multiple variables. … Read more