title: Spring MVC :could not initialize proxy - no Session (through reference chain)
body: <blockquote>
  <p>type Exception report</p>
  <p>message Could not write content: failed to lazily initialize a collection of role: edu.waa.classified.dto.User.products, could not initialize proxy - no Session (through reference chain: java.util.ArrayList[0]-&gt;edu.waa.classified.dto.User[&quot;products&quot;]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: failed to lazily initialize a collection of role: edu.waa.classified.dto.User.products, could not initialize proxy - no Session (through reference chain: java.util.ArrayList[0]-&gt;edu.waa.classified.dto.User[&quot;products&quot;])</p>
  <p>description The server encountered an internal error that prevented it from fulfilling this request.</p>
  </blockquote>