title: Java: Gson and encoding
body: <p>I am using Umlauts (ä,ü,ö) in a Gson that I need to pass via Http Post Body.</p>
  
  <p>Unfortuenately, my web app will return null if the Umlauts are not converted somehow, and they are not.</p>
  
  <p>content-type is "application/json"</p>
  
  <p>How do I tell Gson to encode the Umlauts properly (the Umlauts are in the values, not the keys)?</p>