title: How to obtain the value from a form:select jsp?
body: <p>This is part of a table in a jsp that shows users and role values...</p>
  
  <p>I can not get the actual value into the url /toggleproposalrole?id=${siteUser.id}&amp;proposal_role=${selected} when I select one of the values in the dropdown list..... just like this: ... </p>
  
  <p>192.168.160.128:8080/toggleproposalrole?id=82&amp;proposal_role=[USER,%20ORGANIZER,%20MANAGER]</p>
  
  <p>The URL shows all the values from the dropdown list, not the one that has been selected.</p>
  
  <p>Any hint or alternative would be appreciated.</p>
  
  <pre><code>&lt;td&gt;
  &lt;div class="form-group"&gt;
      &lt;form:select path="proposalRoles" id="proposalRoles" name="proposalRoles"&gt;
          &lt;form:option value="" label="Select" /&gt;
          &lt;form:options items="${proposalRoles}" 
          value="${proposalRoles}" selected="${selected}"/&gt;
      &lt;/form:select&gt;
  &lt;/div&gt;
  &lt;/td&gt;
  &lt;td&gt;
      &lt;a href="${contextRoot}/toggleproposalrole?id=${siteUser.id}&amp;proposal_role=${selected}"&gt;
          &lt;button class="btn-u" type="button"&gt;Modificar&lt;/button&gt;
      &lt;/a&gt;
  &lt;/td&gt;
  </code></pre>
  
  <p>Thanks </p>