title: How can I download a MySQL's BLOB using Servlets and AJAX?
body: <p>I'm using a servlet to access the MySQL data. I already have the code for sending the file from the servlet to the response.</p>
  
  <p>What I don't know is how I'm supossed to catch it with javascript, because I'm not making this call by submit. I don't want to reload the hole page. </p>
  
  <p>I tried making a window.open to the servlet, sending all the params by URL, but it only opens a blank page.</p>