AppController

    function beforeFilter() {
　　　　　　　if(isset($this->Ktai) && $this->Ktai->is_ktai()){                                                                                                                                                                                   
            $this->layout = 'ktai_default';                                                                                                                                                                                                 
            $this->viewPath = 'ktai' . DS . $this->viewPath;                                                                                                                                                                                
            $this->Ktai->_options = array_merge($this->Ktai->_options, array(                                                                                                                                                               
                'input_encoding'  => 'UTF-8',                                                                                                                                                                           
                'output_encoding' => 'SJIS-win',                                                                                                                                                                      
                'output_auto_encoding' => true,                                                                                                                                                          
                'output_auto_convert_emoji' => false,                                                                                                                                                                    
            ));                                                                                                                                                                                                                             
            
            //1.x                                                                                                                                                                          
            $this->header('Content-Type: text/html; charset=Shift-JIS');  
            //2.0                                                                                                                                                                          
            $this->response->header('Content-Type: text/html; charset=Shift-JIS');                                                                                                                                                          
                                                                                                                                                                                     
        }
    }

ktai.php

//class KtaiComponent extends Object { L35
//2.0
class KtaiComponent extends Component { 

	function shutdown(&$controller){

		//自動変換処理
		//requestAction()からのコールの場合は以下処理をスキップする
		//
		if (!isset($controller->params['requested']) || $controller->params['requested'] !== 1) {
			//1.x
                        //$out = $controller->output; //L144
                        //2.0
                        $out = $controller->response->body(); 

                        //1.x
                        //$controller->output = $out; //L170
                        //2.0
                        $controller->response->body($out);