Variables in wget post data

Question

I am working on a simple bash script to download images from the website Tumblr. The idea is to use read to get login info from the user, and wget --post-

Answer 1

important: Do not use :

--header="Content-Type: text/xml" 

together with --post-data. It will override

--header="Content-Type: application/x-www-form-urlencoded" 

issued by wget. Post-data will not be received by HttpServlet