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Editorial Team
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Asked: 2026-05-15T20:05:00+00:00

I’m trying to get a PUT request from Python into a servlet in Tomcat.

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I’m trying to get a PUT request from Python into a servlet in Tomcat. The parameters are missing when I get into Tomcat.

The same code is happily working for POST requests, but not for PUT.

Here’s the client:

lConnection = httplib.HTTPConnection('localhost:8080')
lHeaders = {"Content-type": "application/x-www-form-urlencoded",
              "Accept": "text/plain"}
lParams = {'Username':'usr', 'Password':'password', 'Forenames':'First','Surname':'Last'}
lConnection.request("PUT", "/my/url/", urllib.urlencode(lParams), lHeaders)

Once in the server, a request.getParameter(“Username”) is returning null.

Has anyone got any clues as to where I’m losing the parameters?

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1 Answer

  1. Editorial Team

    I’m guessing here, but I think the problem is that PUT isn’t meant to be used that way. The intent of PUT is to store a single entity, contained in the request, into the resource named in the headers. What’s all this stuff about user name and stuff?

    Your Content Type is application/X-www-form-urlencoded, which is a bunch of field contents. What PUT wants is something like an encoded file. You know, a single bunch of data it can store somewhere.

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