CODEWITHSUNDEEP
javaservlets
Aladdin
Aladdin

Reputation: 1337

Set default servlet

I tried to set default servlet by this way:

@WebServlet({"/abc", "","/"})
public class GreetingServlet extends HttpServlet {

    @Override
    public void doGet(HttpServletRequest request,
            HttpServletResponse response)
            throws ServletException, IOException {
        getServletContext().getRequestDispatcher("/asd/ind.html").forward(request,response);
    }

    @Override
    public String getServletInfo() {
        return "The Hello servlet says hello.";

    }
}

The file /asd/ind.html is exist, when I remove "/" like :

@WebServlet({"/abc", ""})

the redirection works fine when I hit:

contextpath/abc contextpath/ contextpath

But with "/" like 

@WebServlet({"/abc", "","/"})

It turns out

javax.servlet.ServletException: AS-WEB-CORE-00089

When I hit any URL at all, even the previous ones that did work.

Could anyone please give me an explanation? the "/" should make the servlet default which means any unmapped URL should redirected to GreetingServlet.

Upvotes: 0

Views: 803

Answers (1)

Aladdin
Aladdin

Reputation: 1337

The problem happened because the default servlet maps the URI to the static path if it's not mapped to any servlet, but what I did is redefining the default servlet, so when I redirect to /asd/ind.html and this URI is not mapped to any servlet the default serlvet is called and in this case the default one is GreetingServlet, this causes infinite loop.

Upvotes: 1

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