HttpSession.getAttribute not available to filter?

[manarth]

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

		HttpServletResponse res = (HttpServletResponse)response;
		HttpServletRequest req = (HttpServletRequest)request;
		HttpSession ses = (HttpSession) req.getSession();
		[red]Object user = ses.getAttribute("user");[/red]

		if (user==null)
			try {
				res.sendRedirect("/login.jsp");
			} catch(IOException e) {
				e.printStackTrace();
			}
	}

Javac returns error:
cannot find symbol:[tt]
symbol : method getAttribute(java.lang.String)
location: interface javax.servlet.http.HttpSession
Object user = ses.getAttribute("user");[/tt]

It's obviously importing the HttpSession object, otherwise it would throw more errors. It's compiling with Tomcat's servlet-api.jar in the classpath.

<marc>
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[sedj]

Compiles OK for me ... I would guess that you have a servlet API in your CLASSPATH that is prior to version 2.2 .

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[manarth]

Ah, it appears that I had two competing servlet definitions:
- Tomcat's servlet-api.jar file (in my classpath)
- Sun JDK 1.5's javax.servlet.jar file (in JDK\jre\lib\ext).

I renamed the sun file to javax.servlet.jar.disabled; think I'll stick to the Tomcat implementation

<marc>
New to Tek-Tips? Get better answers - faq581-3339