jsp The method getServletContext() is undefined for the type in eclipse

Question

I am using the eclipse helper for Java EE development. I am developing a Struts web application. In a JSP page I use code like this

<script type="text/javascript" src="<%out.print(getServletContext().getContextPath());%>/js/jquery.js"></script>
<link rel="stylesheet" href="<%out.print(getServletContext().getContextPath());%>/css/home.css" />

When I run my server this page works correctly. However, Eclipse shows an error on getServletContext()

The method getServletContext() is undefined for the type __2F_Compiler_2F_WebContent_2F_pages_2F_home_2E_jsp

Here's a screenshot:

Because the page works correctly, I'd like to hide this error in Eclipse. How can I do that?

Answer 1

I can't speak for Eclipse's mistake, but in this specific case, you should be using the implicit JSP scriptlet variable application and not be using HttpServlet-inherited methods.

<script type="text/javascript" src="<%out.print(application.getContextPath());%>/js/jquery.js"></script>
<link rel="stylesheet" href="<%out.print(application.getContextPath());%>/css/home.css" />

---

Unrelated to the concrete problem, this is a 90's way of writing JSPs which is officially discouraged since JSP 2.0 which was released more than a decade ago. Are you sure you're reading up to date resources while learning JSP? You should be using EL expressions instead.

<script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery.js"></script>
<link rel="stylesheet" href="${pageContext.request.contextPath}/css/home.css" />

Or, via <c:set> to save the boilerplate:

<c:set var="root" value="${pageContext.request.contextPath}" />
...
<script type="text/javascript" src="${root}/js/jquery.js"></script>
<link rel="stylesheet" href="${root}/css/home.css" />

See also:

• Browser can't access/find relative resources like CSS, images and links when calling a Servlet which forwards to a JSP

Answer 2

If you use Tomcat 6.0, you should add extended Servlet.

Project->Properties->Add Library->Server Runtime

And it will add the apache's lib.