Zend Framework应用程序内容转换为xml的插件

最新Zend Framework应用程序内容转换为xml的插件

以下是三零网为大家整理的最新Zend Framework应用程序内容转换为xml的插件的文章，希望大家能够喜欢!

在这一篇博文中Thijs Feryn通过实现Zend_Controller_Plugin_Abstract的hook方法，在原程序没有使用context switching控制器助手的情况下，将返回的内容响应转为为特定的XML格式

代码：

<?php  /**  * My_Plugin_Xml component  * Turns an Zend Framework MVC website into an XML webservice  * File From Liehuo.Net */  /**  * My_Plugin_Xml class  *  * @author Thijs Feryn <[email protected]>  */  class My_Plugin_Xml extends Zend_Controller_Plugin_Abstract  {  /**  * Stores the front controller  *  * @var Zend_Controller_Front  */  private $_front;  /**  * Stores the XML output in DOMDocument format  *  * @var DOMDocument  */  private $_xml;  /**  * Class constructor  */  public function __construct()  {  $this->_front = Zend_Controller_Front::getInstance();  $layout = Zend_Layout::getMvcInstance();  $layout->disableLayout();  }  /**  * Build DOMDocument to convert output to XML  *  * @param mixed $return  * @param Exception $exception  * @return string  */  private function _getXML($return = null,Exception $exception = null)  {  $this->_xml = new DOMDocument('1.0', 'UTF-8');  $this->_xml->formatOutput = true; $responseNode = $this->_xml->createElement('response'); $exceptionNode = $this->_xml->createElement('exception');  if(null !== $exception && $exception instanceof Exception ){  $exceptionNode->appendChild(  $this->_xml->createElement('message',  $exception->getMessage()  )  );  $exceptionNode->appendChild(  $this->_xml->createElement('code',  $exception->getCode()  )  );  $exceptionNode->appendChild(  $this->_xml->createElement('type',  get_class($exception)  )  );  } $responseNode->appendChild($exceptionNode);  if(null !== $return){  $responseNode->appendChild(  $this->_serialize('return',$return)  );  } else {  $responseNode->appendChild(  $this->_xml->createElement('return')  );  } $this->_xml->appendChild($responseNode);  return $this->_xml->saveXML();  }  /**  * Modify the HTTP response object  * Remove the HTML body, replace with XML and change the content-type  *  * @param mixed $return  * @param Exception $exception  */  private function _setResponse($return = false,Exception $exception = null)  {  $this->getResponse()->setHeader('Content-Type','text/xml; charset=UTF-8');  $this->getResponse()->clearBody();  $this->getResponse()->setBody(  $this->_getXML($return,$exception)  );  }  /**  * Serialize a mixed value to XML in DOMElement format  * This method can be used recursively in case of objects and arrays  *  * @param string $name  * @param mixed $value  * @return DOMElement  */  private function _serialize($name,$value)  {  if(is_array($value)){  $element = $this->_xml->createElement($name);  foreach ($value as $k=>$v){  if(is_numeric($k)){  $k = 'item';  }  $element->appendChild($this->_serialize($k,$v));  }  } elseif(is_object($value)){  $element = $this->_xml->createElement($name);  $reflection = new ReflectionObject($value);  $properties = $reflection->getProperties();  foreach ($properties as $property){  if($property->isPublic()){  $element->appendChild(  $this->_serialize(  $property->getName(),  $property->getValue($value)  )  );  }  }  }else{  $element = $this->_xml->createElement(  $name,  (string)$value  );  }  return $element;  }  /**  * preDispatch hook that retrieves if an Exception was thrown in the application  * If an exception is thrown, the exception is passed to the exception part of the XML output and script execution is terminated  *  * @param Zend_Controller_Request_Abstract $request  */  public function preDispatch(Zend_Controller_Request_Abstract $request)  {  if($this->getResponse()->isException()){  $exArray = $this->getResponse()->getException();  $this->_setResponse(null,$exArray[0]);  $this->getResponse()->sendResponse();  exit();  }  }  /**  * postDispatch hook that serializes the view object to XML by modifying the HTTP response  * If no exception was thrown script execution continues and the postDispatch method will be called  *  * @param Zend_Controller_Request_Abstract $request  */  public function postDispatch(Zend_Controller_Request_Abstract $request)  {  $view = Zend_Controller_Action_HelperBroker::getExistingHelper('ViewRenderer')->view;  $this->_setResponse($view);  }  }  _getXML()产生特定的xml结构  _setResponse()设置响应的xml内容  _serialize()将返回的对象序列化为xml(使用递归)  preDispatch()判断是否有异常，如果有则只设置异常并终止脚本执行  postDispatch()返回响应

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