dompdf在codeigniter中生成损坏的pdf

I am using dompdf for generating pdf in codeigniter application, When I am opening pdf its giving error

"

I checked all stackoverflow stuffs for this,

• Corrupt PDF on the fly attached to email via dompdf
• cannot open pdf file generated using dompdf
• Generating a PDF using CodeIgniter

and more,but no luck, my code is :

$html = file_get_contents(base_url() . "sampleHTMLfilepath");
require_once("dompdf/dompdf_config.inc.php");
if (is_null($this->_dompdf)) {
    $this->_dompdf = new DOMPDF();
}
$this->_dompdf->load_html($html);
$this->_dompdf->render();
$this->_dompdf->stream('test.pdf);

sample html is simple file with p tag

<p>Hello </p>

Please help me, Thanks

no one should be down voting this question. anyway try something like this in your controller method, convert for your use.

// get some content
$data['order'] = $this->printmodel->getOrder();

// Load a view like you would normally do
$this->load->view('orderprint', $data);

// before going any further, 
// make sure the content is showing on the view with no errors
// when you call the method

// all good? ok now add this part 

// Get the output html  
$html = $this->output->get_output();

// Load library
$this->load->library('dompdf_gen');

// Create pdf name based on date, hour, seconds
$pdfname = date("FjYgias");

// Convert to PDF
// (this is for streaming the pdf directly)
$this->dompdf->load_html($html);
$this->dompdf->render();
$this->dompdf->stream($pdfname);

and this is a much more complicated example then what you are trying to do - you don't have to call a model, etc - you can just call the view,

$this->load->view('somethingcooltoprint');

confirm its working and then do the rest of the code like above.