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Guys, I am stuck at a very strange behavior: I am writing a servlet for handling file upload, using @MultipartConfig annotation for the servlet. I inspected that this statement:
always returns an empty collection, even I had pick up a file in the upload form. Also the form declares enctype="multipart/form-data" already.
It's strange because I worked before but suddenly it doesn't work anymore today.
My environment is Win7-64-bit, Tomcat 7-64bit, Java 7-64bit.
Guys, I found where is the problem. I change code from:
to
I don't know why the attribute "name" matters here. Anyway, that could help if someone experiences the same problem like me.
Ulf Dittmer
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Joined: Mar 22, 2005
Posts: 35237
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I think -not quite sure- that elements without a name attribute are not sent as part of the form submission. or maybe that's browser-dependent behavior.
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