public function updateSignature()
{
$errors = $this->errors;
//实例化Model
$adminModel = new AdminModel();
$adminId = $_SESSION['admin']['adminId'];
$signature = $_GET['signature'];
$row = $adminModel->updateSignature($adminId, $signature);
if ($row) {
$result['code'] = '0';
$result['message'] = $errors['0'];
} else {
$result['code'] = '012';
$result['message'] = $errors['012'];
}
echo json_encode($result);
exit;
}