how to send a exposed filter when use Service views I create a exposed filter of field field_nick_name.

and I visit this link 

http://drupal/daxuebao/api/views/user_search_by_nick?filters[field_nick_name]=a


and this link 

http://drupal/daxuebao/api/views/user_search_by_nick?field_nick_name=a


this above 2 can not work, is there someone can tell me how to use Service View with exposed filter?
I try to find out the views setting that store in database with following code:

$db = db_select('views_display', 'v')
    -&gt;condition('v.vid', '30')
    -&gt;fields('v', array('display_options'));

  $res = $db-&gt;execute()-&gt;fetchAssoc();
  $a = unserialize($res['display_options']);


the $a contain a filter array. The field_nick_name actually is field_nick_name_value, and uid is uid_raw