如何使用phpseclib在laravel 5 php

我正在制作一个基于laravel的应用程序，允许它通过SSH与linux服务器通信，我通常使用phpseclib与服务器进行通信，如重启和其他，但是当我用laravel构建应用程序时，我不能或不愿看到如何与laravel集成，我试图包括php手册，但仍然无法错误类'phpseclib'Net' Net_SSH2'未找到，我当前的代码

    public function store(Request $request)
{
    // create ssh account and inserted into database here
    if(Auth::check()) // make sure user has been logging on
    {
      if($dump = DB::table('servers')->where('key', $request->_key)->get())
      {
        if($prices = DB::table('app_data')->get())
        {
          $price = $prices[0]->prices;
          if(DB::table('ssh_users')->where('name', $request->sshname)->where('on_server', $dump[0]->ip)->count() > 0 )
          {
            return view('create')->with('userexist', $request->sshname);
          }
          else
          {
            include(app_path() . "/lib/phpseclib/phpseclib/phpseclib/Net/SSH2.php");
            $command = new 'phpseclib'Net'Net_SSH2($dump[0]->ip);
            $valid = array(
              'sshuser'     => $request->sshname,
              'sshpass'     => $request->sshpass,
              'sshcreated'  => date('d/m/Y'),
              'sshexpired'  => $request->sshexpired,
              'onserver'    => $dump[0]->name,
              'serveruser'  => $dump[0]->user,
              'serverpass'  => $dump[0]->password,
              'sshprice'    => $price,
              'command'     => $command
            );
            if(DB::table('ssh_users')->insert([
              'name'        => $request->sshname,
              'password'    => $request->sshpass,
              'created_at'  => date('d/m/Y'),
              'expired_on'  => $request->sshexpired,
              'on_server'   => $dump[0]->ip,
              'reseller'    => Auth::user()->name
            ])) {
              return view('create')->with('valid', $valid);
            }
          }
        }
        else
        {
          return view('create')->with('error', $request->sshname);
        }
      }
      else
      {
        return view('create')->with('serverabort', $request->sshname);
      }
    }
}