Java ExternalContext.getResponse方法代碼示例

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
/**
 * Handle a server-side error by reporting it back to the client.
 */
public static void handleError(ExternalContext ec, 
                               Throwable t) throws IOException
{
  String error = _getErrorString();
  _LOG.severe(error, t);

  ServletResponse response = (ServletResponse)ec.getResponse();
  PrintWriter writer = response.getWriter();
  XmlResponseWriter rw = new XmlResponseWriter(writer, "UTF-8");
  rw.startDocument();
  rw.startElement("partial-response", null);
  rw.startElement("error", null);
  rw.startElement("error-name", null);
  rw.writeText(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, null);
  rw.endElement("error-name");

  String errorMessage = _getErrorMessage(error);

  // Default exception message contains the type of the exception.
  // Do not send this info to client in Production mode
  ApplicationFactory factory = (ApplicationFactory) FactoryFinder.getFactory(FactoryFinder.APPLICATION_FACTORY);
  Application application = factory.getApplication();
  if (application.getProjectStage() != ProjectStage.Production)
  {
    errorMessage = _getExceptionString(t) + errorMessage;
  }

  rw.startElement("error-message", null);
  rw.writeText(errorMessage, null);
  rw.endElement("error-message");

  rw.endElement("error");
  rw.endElement("partial-response");
  rw.endDocument();
  rw.close();
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
/**
 * Saves the current state to the session.  Running this is only manditory if you need to preserve a request across
 * the natural request boundry in a portlet environment.  Executing this function outside of a portlet environment will
 * not alter operation of his class.
 * 
 * @param ec the ExternalContext to save the stateMap to.
 */
public void saveState(ExternalContext ec)
{
  RequestType type = ExternalContextUtils.getRequestType(ec);
  if(type.isPortlet() && !type.isResponseWritable())
  {
    try
    {
      //TODO: use reflection here but it can be replaced..
      Object actionResp = ec.getResponse();
      Method m = actionResp.getClass().getMethod("setRenderParameter", String.class, String.class);
      String uuid = UUID.randomUUID().toString();

      ec.getSessionMap().put(_STATE_MAP+"."+uuid, this);
      m.invoke(actionResp, _STATE_MAP, uuid);
    }
    catch(Throwable t)
    {
      //TODO: Log exception
      t.printStackTrace();
    }
  }
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
/**
 * This method writes a <noop/> to the response. 
 * 
 * @param context the FacesContext
 * @throws IOException 
 */
public static void renderNoopResponse(FacesContext context) 
  throws IOException
{
  ExternalContext external = context.getExternalContext();
  Writer writer = ExternalContextUtils.getResponseWriter(external);
  Object response = external.getResponse();
  
  if (response instanceof HttpServletResponse) 
  {
    HttpServletResponse httpResponse = (HttpServletResponse) response;

    // Prevent caching
    httpResponse.setHeader("Cache-Control", "no-cache");
    httpResponse.setHeader("Pragma", "no-cache");
    httpResponse.setHeader("Expires", "-1");
  }
  
  XmlResponseWriter xrw = new XmlResponseWriter(writer, "utf-8");
  xrw.startDocument();
  
  xrw.startElement("partial-response", null);
  xrw.startElement("noop", null);
  xrw.endElement("noop");      
  xrw.endElement("partial-response");

  xrw.endDocument();
  xrw.close();
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
public UploadActionRequestWrapper(
    ExternalContext ec,
    Map<String, String[]> params)
{
  super((ActionRequest)ec.getRequest());
  _response = (ActionResponse)ec.getResponse();
  _manager = new UploadRequestManager(ec, params);
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
public XmlHttpResourceResponse(ExternalContext ec)
{
  super((ResourceResponse) ec.getResponse());

  _contentType = "text/xml;charset=utf-8";

  // must set contentType here since
  // setContentType is ignored when inside an included page (bug 5591124)
  super.setContentType(_contentType);
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
XmlHttpServletResponse(ExternalContext ec)
{
  super((HttpServletResponse)ec.getResponse());
  
  _contentType = "text/xml;charset=utf-8";
  
  // must set contentType here since
  // setContentType is ignored when inside an included page (bug 5591124)    
  this.setContentType(_contentType);
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
private void _handleDialogReturn(ExternalContext ec)
  throws IOException
{
  Map<String, Object> reqMap = ec.getRequestMap();
  
  if(Boolean.TRUE.equals(reqMap.get(DialogServiceImpl.DIALOG_RETURN)))
  {
    /**
     * We use pageflow scope so that if something fails on the redirect, we
     * have a chance of getting cleaned up early.  This will not always happen
     * so the object may stick around for a while.
     */
    Map<String, Object> sessionMap = ec.getSessionMap();
    String uid = UUID.randomUUID().toString();
    LaunchData data = new LaunchData((UIViewRoot)reqMap.get(RequestContextImpl.LAUNCH_VIEW), (Map<String, String[]>) reqMap.get(RequestContextImpl.LAUNCH_PARAMETERS));
    sessionMap.put(_getKey(uid), data);
    
    //Construct URL
    //TODO: sobryan I believe some of this can be added to the RequestContextUtils to allow
    //      this url to be constructed for both portlet and servlet environments.  We'll want to research.
    HttpServletRequest req = (HttpServletRequest) ec.getRequest();
    StringBuffer url = req.getRequestURL().append("?");
    String queryStr = req.getQueryString();
    if((queryStr != null) && (queryStr.trim().length() >0))
    {
      url.append(queryStr)
         .append("&");
    }
    
    url.append(_LAUNCH_KEY)
       .append("=")
       .append(uid);

    //Extensions to Trinidad may have alternatve means of handling PPR.  This
    //flag allows those extensions to for the <redirect> AJAX message to be returned.
    if (RequestContext.getCurrentInstance().isPartialRequest(_PSEUDO_FACES_CONTEXT.get()) || 
        Boolean.TRUE.equals(RequestStateMap.getInstance(ec).get(_FORCE_PPR_DIALOG_RETURN)))
    {
      //Special handling for XmlHttpRequest.  Would be cool to handle this much cleaner.
      HttpServletResponse resp = (HttpServletResponse) ec.getResponse();
      XmlHttpConfigurator.sendXmlRedirect(resp.getWriter(), url.toString());
    }
    else
    {
      ec.redirect(url.toString());
    }
  }
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
public UploadActionInvocationHandler(ExternalContext ec, Map<String, String[]> params)
{
  _request = ec.getRequest();
  _response = ec.getResponse();
  _manager = new UploadRequestManager(ec, params);
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
public UploadResourceRequest(ExternalContext ec, Map<String, String[]> params)
{
  super((ResourceRequest) ec.getRequest());
  _response = (ActionResponse) ec.getResponse();
  _manager = new UploadRequestManager(ec, params);
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
public DispatchResourceResponse(ExternalContext ec)
{
  super((ResourceResponse)ec.getResponse());
   _request = (ResourceRequest)ec.getRequest();
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
public DispatchServletResponse(ExternalContext ec)
{
  super((HttpServletResponse)ec.getResponse());
  _request = (HttpServletRequest)ec.getRequest();
}
 

import javax.faces.context.ExternalContext; //導入方法依賴的package包/類
public DispatchRenderResponse(ExternalContext ec)
{
  super((RenderResponse)ec.getResponse());
   _request = (RenderRequest)ec.getRequest();
}