Examples of org.apache.struts.upload.MultipartRequestHandler

org.apache.struts.upload.MultipartRequestHandler

MultipartRequestHandler provides an standard interface for struts to deal with file uploads from forms with enctypes of "multipart/form-data". Providers must provide a no-argument constructor for initialization.

     */
    private static MultipartRequestHandler getMultipartHandler(
            HttpServletRequest request, ActionServletWrapper servlet)
        throws ServletException {


        MultipartRequestHandler multipartHandler = null;
        String multipartClass = (String)
            request.getAttribute(Action.MULTIPART_KEY);
        request.removeAttribute(Action.MULTIPART_KEY);


        // Try to initialize the mapping specific request handler

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        if (bean instanceof ActionForm) {
            ((ActionForm) bean).setMultipartRequestHandler(null);
        }


        MultipartRequestHandler multipartHandler = null;
        if ((contentType != null)
            && (contentType.startsWith("multipart/form-data"))
            && (method.equalsIgnoreCase("POST"))) {
            // Get the ActionServletWrapper from the form bean
            ActionServletWrapper servlet;


            if (bean instanceof ActionForm) {
                servlet = ((ActionForm) bean).getServletWrapper();
            } else {
                throw new ServletException("bean that's supposed to be "
                    + "populated from a multipart request is not of type "
                    + "\"org.apache.struts.action.ActionForm\", but type "
                    + "\"" + bean.getClass().getName() + "\"");
            }


            // Obtain a MultipartRequestHandler
            multipartHandler = getMultipartHandler(request);


            if (multipartHandler != null) {
                isMultipart = true;


                // Set servlet and mapping info
                servlet.setServletFor(multipartHandler);
                multipartHandler.setMapping((ActionMapping) request
                    .getAttribute(Globals.MAPPING_KEY));


                // Initialize multipart request class handler
                multipartHandler.handleRequest(request);


                //stop here if the maximum length has been exceeded
                Boolean maxLengthExceeded =
                    (Boolean) request.getAttribute(MultipartRequestHandler.ATTRIBUTE_MAX_LENGTH_EXCEEDED);

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     *                          locate the multipart handler.
     */
    private static MultipartRequestHandler getMultipartHandler(
        HttpServletRequest request)
        throws ServletException {
        MultipartRequestHandler multipartHandler = null;
        String multipartClass =
            (String) request.getAttribute(Globals.MULTIPART_KEY);


        request.removeAttribute(Globals.MULTIPART_KEY);

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                   "\"org.apache.struts.action.ActionForm\", but type " +
                   "\"" + bean.getClass().getName() + "\"");
            }


            // Obtain a MultipartRequestHandler
            MultipartRequestHandler multipartHandler = getMultipartHandler(request, servlet);


            // Set the multipart request handler for our ActionForm.
            // If the bean isn't an ActionForm, an exception would have been
            // thrown earlier, so it's safe to assume that our bean is
            // in fact an ActionForm.
            ((ActionForm) bean).setMultipartRequestHandler(multipartHandler);


            if (multipartHandler != null)
            {
                isMultipart = true;
                // Set servlet and mapping info
                servlet.setServletFor(multipartHandler);
                multipartHandler.setMapping((ActionMapping) request.getAttribute(Action.MAPPING_KEY));
                // Initialize multipart request class handler
                multipartHandler.handleRequest(request);
                //stop here if the maximum length has been exceeded
                Boolean maxLengthExceeded = (Boolean)
                                            request.getAttribute(MultipartRequestHandler.ATTRIBUTE_MAX_LENGTH_EXCEEDED);
                if ((maxLengthExceeded != null) && (maxLengthExceeded.booleanValue()))
                {
                    return;
                }
                //retrive form values and put into properties
                multipartElements = multipartHandler.getAllElements();
                names = multipartElements.keys();
            }
            request.removeAttribute(Action.MAPPING_KEY);
        }

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     */
    private static MultipartRequestHandler getMultipartHandler(
            HttpServletRequest request, ActionServletWrapper servlet)
        throws ServletException {


        MultipartRequestHandler multipartHandler = null;
        String multipartClass = (String)
            request.getAttribute(Action.MULTIPART_KEY);
        request.removeAttribute(Action.MULTIPART_KEY);


        // Try to initialize the mapping specific request handler

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                        + bean.getClass().getName()
                        + "\"");
            }


            // Obtain a MultipartRequestHandler
            MultipartRequestHandler multipartHandler = getMultipartHandler(request);


            // Set the multipart request handler for our ActionForm.
            // If the bean isn't an ActionForm, an exception would have been
            // thrown earlier, so it's safe to assume that our bean is
            // in fact an ActionForm.
            ((ActionForm) bean).setMultipartRequestHandler(multipartHandler);


            if (multipartHandler != null) {
                isMultipart = true;
                // Set servlet and mapping info
                servlet.setServletFor(multipartHandler);
                multipartHandler.setMapping(
                        (ActionMapping) request.getAttribute(Globals.MAPPING_KEY));
                // Initialize multipart request class handler
                multipartHandler.handleRequest(request);
                //stop here if the maximum length has been exceeded
                Boolean maxLengthExceeded =
                        (Boolean) request.getAttribute(
                                MultipartRequestHandler.ATTRIBUTE_MAX_LENGTH_EXCEEDED);
                if ((maxLengthExceeded != null) && (maxLengthExceeded.booleanValue())) {

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     *                             to locate the multipart handler.
     */
    private static MultipartRequestHandler getMultipartHandler(HttpServletRequest request)
            throws ServletException {


        MultipartRequestHandler multipartHandler = null;
        String multipartClass = (String) request.getAttribute(Globals.MULTIPART_KEY);
        request.removeAttribute(Globals.MULTIPART_KEY);


        // Try to initialize the mapping specific request handler
        if (multipartClass != null) {

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            // else if ( ! ( bean instanceof ActionForm ) )
            //     throw new ServletException
            //         ("bean that's supposed to be populated from a multipart request is not of type " + 
            //          "\"org.apache.struts.action.ActionForm\", but type \"" + bean.getClass().getName() + "\"");
            
            MultipartRequestHandler multipartHandler = getCachedMultipartHandler(request);
            boolean preHandled = false;
            
            if (multipartHandler == null)
            {
                multipartHandler = getMultipartHandler(request);
            }
            else
            {
                preHandled = true;
            }
            
            if (bean != null)
            {
                bean.setMultipartRequestHandler(multipartHandler);
            }
            
            if(multipartHandler != null)
            {
                isMultipart = true;
                
                servlet.setServletFor(multipartHandler);
                multipartHandler.setMapping((ActionMapping)request.getAttribute(Globals.MAPPING_KEY));
                
                if (! preHandled)
                {
                    multipartHandler.handleRequest(request);
                }
                
                Boolean maxLengthExceeded = (Boolean)request.getAttribute(MultipartRequestHandler.ATTRIBUTE_MAX_LENGTH_EXCEEDED);
                if(maxLengthExceeded != null && maxLengthExceeded.booleanValue())
                {

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     * Can be called early in the request processing cycle to cache a single multipart handler for the request.
     */
    static void preHandleMultipartRequest(HttpServletRequest request)
        throws ServletException
    {
        MultipartRequestHandler multipartHandler = getCachedMultipartHandler(request);
        
        if (multipartHandler == null)
        {
            multipartHandler = getMultipartHandler(request);
            
            if (multipartHandler != null)
            {
                //
                // Run the request through the handler, and cache the handler in the outer request.
                //
                multipartHandler.handleRequest(request);
                HttpServletRequest outerRequest = ScopedServletUtils.getOuterRequest(request);
                outerRequest.setAttribute(PREHANDLED_MULTIPART_REQUEST_ATTR, multipartHandler);
            }
        }
    }

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     */
    // @Struts: org.apache.struts.util.RequestUtils.getMultipartHandler
    private static final MultipartRequestHandler getMultipartHandler(HttpServletRequest request)
        throws ServletException
    {
        MultipartRequestHandler multipartHandler = null;
        String multipartClass = (String) request.getAttribute(Globals.MULTIPART_KEY);
        request.removeAttribute(Globals.MULTIPART_KEY);


        // Try to initialize the mapping specific request handler
        if (multipartClass != null) {

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