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javaservletswildflyundertowwildfly-10

Undertow always add charset to Content-Type header even if it is not a text MIME type

If I try to set the content type to "image/jpg" in a servlet

response.setContentType("image/jpg")

I get 

Content-Type: image/jpg;charset=ISO-8859-1

The default servlet works well instead.

How can I get rid of charset for non text mime types?

Solution

  • The problem was that I used resp.getWriter() instead of resp.getOutputStream() to serve images.