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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Tomcat returning context path with extra leading slash
Date Fri, 23 Oct 2015 13:15:20 GMT
Konstantin,

On 10/23/15 6:32 AM, Konstantin Kolinko wrote:
> 2015-10-22 20:55 GMT+03:00 Christopher Schultz <chris@christopherschultz.net>:
>> All,
>>
>> On 10/14/15 11:03 PM, Christopher Schultz wrote:
>>> All,
>>>
>>> On 7/3/15 1:40 PM, Christopher Schultz wrote:
>>>> Running Tomcat 8.0.x trunk as of 1688887 (slightly old) on
>>>> jdk1.8.0_45 on Mac OS X, I'm having intermittent problems with
>>>> Tomcat appearing not to change a relative URL into a
>>>> fully-qualified URL for redirection purposes.
>>>
>>>> Since it's intermittent, it's hard to catch. But I just found a
>>>> case.
>>>
>>>> I have an HttpServletResponseWrapper that logs calls to
>>>> sendRedirect() by dumping-out the URL that was passed-into the
>>>> sendRedirect method.
>>>
>>>> [snip]
>>>
>>>> [HttpServletResponse.sendRedirect or similar is ruining my redirect
>>>>  URL, so the hostname is being obliterated and I get
>>>> http://context/path/to/page instead of
>>>> http://localhost/context/path/to/page]
>>>
>>> I'm having this problem, again. This time with an updated 8.0.x trunk
>>> (pretty much 8.0.27).
>>>
>>> It might be a problem with securityfilter, which is trying to do this:
>>>
>>> // redirect to login page
>>> response.sendRedirect(response.encodeRedirectURL(request.getContextPath(
>>> )
>>> + loginPage));
>>>
> <...>
>>
>> Any idea what might be causing Tomcat to return "/" + context path when
>> ServletContext.getContextPath() is called?
> 
> It seems that you are confusing two different methods,
> 
> (1) HttpServletRequest.getContextPath()
> (2) ServletContext.getContextPath(), @since Servlet 2.5
> 
> (1) returns the actual value from client's request, as is
> (2) returns "canonical" value
> 
> (2) is always the same, (1) varies

Aah, I didn't realize that they were different.

I'll look into why HttpServletRequest.getContextPath is returning the
"extra" slash -- probably because of something that has happened
previously in the workflow.

Thanks,
-chris

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