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Java Servlet getParameter for a param that is a URL

Answer 1

+3 A:

I can't reproduce your problem on Tomcat 6.0.29. There's more at matter. Maybe a Filter in the chain which is doing something with the request object?

Anyway, here's a SSCCE in flavor of a single JSP:

<!DOCTYPE html>
<html lang="en">
    <head>
        <title>Test</title>
    </head>
    <body>
        <p><a href="?url=http%3A%2F%2Fwww.site.com%3Fparam1%3D1%26param2%3D2">click here</a>
        <p>URL: ${param.url}
    </body>
</html>

Copy'n'paste'n'run it and click the link. Right here I see the following result:

click here

URL: http://www.site.com?param1=1&param2=2

The same is reproducible with a simple servlet like this which is invoked directly by browser address bar:

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    response.getWriter().write(request.getParameter("url"));
}

Tomcat is by the way configured with URIEncoding="UTF-8" in HTTP connector, but even with ISO-8859-1 (which is the default), the behaviour is -as expected in this particular case- the same.

BalusC 2010-09-21 02:45:30

Thanks, the problem was that I was submitting my url (via a form) to another page. The second page was employing an ajax call to the server. In the process, the url was decoded, so I have to recode once again before making my call to the servlet.

prometheus 2010-09-21 12:27:36

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Java Servlet getParameter for a param that is a URL

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