Empty parameters list in requests from .html post multipart/form-data forms to servlets 2.5 or 3.0

My problem is I have a form in an .html page which activates a servlet named CodeSubmission. At first I implemented using the 3.0 API (by just using @WebServlet("/CodeSubmission")), but whenever the servlet was activated the request came without any parameters. So I decided to give it a try and use the 2.5 API in a brand new project (by manually adding the servlet to the web.xml file), but again, whenever the servlet is called the request came without any parameters.

I also thought it was because of file uploading field, but even after removing it the select field doesn't appear as a request parameter too.

Here is the html form code:

<form action="CodeSubmission" method="POST" enctype="multipart/form-data"> <label for="compiler">Compilador:</label> <select id="compiler"> <option value="c">C</option> <option value="c++">C++</option> <option value="scala7">Scala 2.7.7</option> <option value="scala8">Scala 2.8.1</option> <option value="java5">Java 1.5</option> <option value="java6">Java 1.6</option> </select> <br /> <label for="code">Arquivo:</label> <input id="code" type="file" size=80 /> <br /> <input type="submit" value="Enviar" /> </form> 

And here is the test code to check the parameters:

 System.out.println("Length: "+request.getContentLength()); System.out.println("Content Type: "+request.getContentType()); System.out.println("Method: "+request.getMethod()); Enumeration<String> attributeNames = request.getAttributeNames(); System.out.println("Request Attributes"); while (attributeNames.hasMoreElements()) { String name = attributeNames.nextElement(); System.out.println(name + ": " + request.getAttribute(name)); } Enumeration<String> paramNames = request.getParameterNames(); System.out.println("Request Parameters"); while (paramNames.hasMoreElements()) { String name = paramNames.nextElement(); System.out.println(name + ": " + request.getParameter(name)); } 

The request.getParameterNames() Enumeration has always size 0. Here is what is printed in the console when I click the 'Enviar' button after loading a file and selecting an option, using Servlet 2.5:

Length: 44 Content Type: multipart/form-data; boundary=----WebKitFormBoundary4E3NYbsqXZZMWwcl Method: POST Request Attributes Request Parameters