codeigniter中的路由无法正常工作

Question

页面显示正确，但是当我点击分页中的第二页时，它的显示页面未找到。当我给出这样的路线时，问题发生了......这是我给出的路线..

$route['mens']='hardpolo_control/men_image';
$route['mens/(:any)']='hardpolo_control/men_image/$1';

这是分页网址

public function men_image($category_name=null)    
{   
    $category_id =$this->Hardpolo_model->get_category_id($category_name);     
    $data['active_mn']=$category_id;
    $data['mendropdown']=$this->Hardpolo_model->get_category_by_parent($p_id=8);
    $data['kidsdropdown']=$this->Hardpolo_model->get_category_by_parent($p_id=9);
    $data['accessoriesdropdown']=$this->Hardpolo_model->get_category_by_parent($p_id=21);
    $config['base_url'] = base_url().'mens/'.$category_name;
    $config['per_page'] = 3;
    $config['uri_segment'] = 3;
    $config['total_rows'] = $this->Hardpolo_model->count_category_images($category_id);
    $data['men_category_galery']=$this->Hardpolo_model->get_category_images($category_id,$config['per_page'],$this->uri->segment(3));
    $this->load->library('pagination',$config);
    $data['page_links'] = $this->pagination->create_links();
    $this->load->view('men_image',$data);
}