ring should be in the form of a string packaged by the GET or POST method, that is,
 it should have key-value pairs in the form <i>key=value</i>, with each pair separated from the next by a &amp;
 character.

 <p>
 A key can appear more than once in the query string with different values. However, the key appears only once in
 the hashtable, with its value being an array of strings containing the multiple values sent by the query string.
 
 <p>
 The keys and values in the hashtable are stored in their decod