title: Servlet. How to get parameters if their keys are not unique?
body: <p>In servlet I get POST parameters where keys are not unique. Like this </p>
  
  <pre><code>id = 12, id = 13, id = 14 
  </code></pre>
  
  <p>So I can't use <code>getParameterMap()</code> to get this parameters (because HashMap contain only unique keys). What is the best way to solve this problem and get values from all non-unique parameters from POST query?</p>
  
  <p>Thanks!</p>
  
  <p>UPD. I cant edit request parameters (I retrieve this parameters from other app) </p>