db connect has error!

object(PDOException)#16 (8) {
  ["message":protected]=>
  string(41) "SQLSTATE[HY000] [2002] Connection refused"
  ["string":"Exception":private]=>
  string(0) ""
  ["code":protected]=>
  int(2002)
  ["file":protected]=>
  string(39) "/www/data/v_1000/system/base/EasyDB.php"
  ["line":protected]=>
  int(38)
  ["trace":"Exception":private]=>
  array(5) {
    [0]=>
    array(6) {
      ["file"]=>
      string(39) "/www/data/v_1000/system/base/EasyDB.php"
      ["line"]=>
      int(38)
      ["function"]=>
      string(11) "__construct"
      ["class"]=>
      string(3) "PDO"
      ["type"]=>
      string(2) "->"
      ["args"]=>
      array(4) {
        [0]=>
        string(44) "mysql:host=127.0.0.1;port=1759;dbname=v_1000"
        [1]=>
        string(6) "v_1000"
        [2]=>
        string(16) "bFJprd5tc7EFK2bZ"
        [3]=>
        array(1) {
          [1002]=>
          string(14) "SET NAMES utf8"
        }
      }
    }
    [1]=>
    array(6) {
      ["file"]=>
      string(39) "/www/data/v_1000/system/base/Router.php"
      ["line"]=>
      int(218)
      ["function"]=>
      string(11) "__construct"
      ["class"]=>
      string(6) "EasyDB"
      ["type"]=>
      string(2) "->"
      ["args"]=>
      array(0) {
      }
    }
    [2]=>
    array(6) {
      ["file"]=>
      string(36) "/www/data/v_1000/app/home/router.php"
      ["line"]=>
      int(30)
      ["function"]=>
      string(8) "dispatch"
      ["class"]=>
      string(6) "Router"
      ["type"]=>
      string(2) "->"
      ["args"]=>
      array(0) {
      }
    }
    [3]=>
    array(4) {
      ["file"]=>
      string(34) "/www/data/v_1000/system/moxian.php"
      ["line"]=>
      int(74)
      ["args"]=>
      array(1) {
        [0]=>
        string(36) "/www/data/v_1000/app/home/router.php"
      }
      ["function"]=>
      string(7) "include"
    }
    [4]=>
    array(4) {
      ["file"]=>
      string(33) "/www/data/v_1000/public/index.php"
      ["line"]=>
      int(27)
      ["args"]=>
      array(1) {
        [0]=>
        string(34) "/www/data/v_1000/system/moxian.php"
      }
      ["function"]=>
      string(7) "require"
    }
  }
  ["previous":"Exception":private]=>
  NULL
  ["errorInfo"]=>
  array(3) {
    [0]=>
    string(5) "HY000"
    [1]=>
    int(2002)
    [2]=>
    string(18) "Connection refused"
  }
}