Examples with RequestDispatcher javax.servlet.RequestDispatcher used on opensource projects

Example 31 with RequestDispatcher

use of javax.servlet.RequestDispatcher in project guice by google.

the class ManagedServletPipeline method getRequestDispatcher.

/**
   * @return Returns a request dispatcher wrapped with a servlet mapped to the given path or null if
   *     no mapping was found.
   */
RequestDispatcher getRequestDispatcher(String path) {
    final String newRequestUri = path;
    for (final ServletDefinition servletDefinition : servletDefinitions) {
        if (servletDefinition.shouldServe(path)) {
            return new RequestDispatcher() {

                @Override
                public void forward(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
                    Preconditions.checkState(!servletResponse.isCommitted(), "Response has been committed--you can only call forward before" + " committing the response (hint: don't flush buffers)");
                    // clear buffer before forwarding
                    servletResponse.resetBuffer();
                    ServletRequest requestToProcess;
                    if (servletRequest instanceof HttpServletRequest) {
                        requestToProcess = wrapRequest((HttpServletRequest) servletRequest, newRequestUri);
                    } else {
                        // This should never happen, but instead of throwing an exception
                        // we will allow a happy case pass thru for maximum tolerance to
                        // legacy (and internal) code.
                        requestToProcess = servletRequest;
                    }
                    // now dispatch to the servlet
                    doServiceImpl(servletDefinition, requestToProcess, servletResponse);
                }

                @Override
                public void include(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
                    // route to the target servlet
                    doServiceImpl(servletDefinition, servletRequest, servletResponse);
                }

                private void doServiceImpl(ServletDefinition servletDefinition, ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
                    servletRequest.setAttribute(REQUEST_DISPATCHER_REQUEST, Boolean.TRUE);
                    try {
                        servletDefinition.doService(servletRequest, servletResponse);
                    } finally {
                        servletRequest.removeAttribute(REQUEST_DISPATCHER_REQUEST);
                    }
                }
            };
        }
    }
    //otherwise, can't process
    return null;
}

Example 32 with RequestDispatcher

use of javax.servlet.RequestDispatcher in project grails-core by grails.

the class UrlMappingUtils method includeForUrl.

/**
     * Includes the given URL returning the resulting content as a String
     *
     * @param includeUrl The URL to include
     * @param request The request
     * @param response The response
     * @param model The model
     * @return The content
     */
@SuppressWarnings({ "unchecked", "rawtypes" })
public static IncludedContent includeForUrl(String includeUrl, HttpServletRequest request, HttpServletResponse response, Map model) {
    RequestDispatcher dispatcher = request.getRequestDispatcher(includeUrl);
    HttpServletResponse wrapped = WrappedResponseHolder.getWrappedResponse();
    response = wrapped != null ? wrapped : response;
    WebUtils.exposeIncludeRequestAttributes(request);
    Map toRestore = WebUtils.exposeRequestAttributesAndReturnOldValues(request, model);
    final GrailsWebRequest webRequest = GrailsWebRequest.lookup(request);
    final Object previousControllerClass = webRequest.getAttribute(GrailsApplicationAttributes.GRAILS_CONTROLLER_CLASS_AVAILABLE, WebRequest.SCOPE_REQUEST);
    final Object previousMatchedRequest = webRequest.getAttribute(UrlMappingsHandlerMapping.MATCHED_REQUEST, WebRequest.SCOPE_REQUEST);
    try {
        webRequest.removeAttribute(GrailsApplicationAttributes.GRAILS_CONTROLLER_CLASS_AVAILABLE, WebRequest.SCOPE_REQUEST);
        webRequest.removeAttribute(UrlMappingsHandlerMapping.MATCHED_REQUEST, WebRequest.SCOPE_REQUEST);
        webRequest.removeAttribute("grailsWebRequestFilter" + OncePerRequestFilter.ALREADY_FILTERED_SUFFIX, WebRequest.SCOPE_REQUEST);
        final IncludeResponseWrapper responseWrapper = new IncludeResponseWrapper(response);
        try {
            WrappedResponseHolder.setWrappedResponse(responseWrapper);
            dispatcher.include(request, responseWrapper);
            if (responseWrapper.getRedirectURL() != null) {
                return new IncludedContent(responseWrapper.getRedirectURL());
            }
            return new IncludedContent(responseWrapper.getContentType(), responseWrapper.getContent());
        } finally {
            webRequest.setAttribute(GrailsApplicationAttributes.GRAILS_CONTROLLER_CLASS_AVAILABLE, previousControllerClass, WebRequest.SCOPE_REQUEST);
            webRequest.setAttribute(UrlMappingsHandlerMapping.MATCHED_REQUEST, previousMatchedRequest, WebRequest.SCOPE_REQUEST);
            WrappedResponseHolder.setWrappedResponse(wrapped);
        }
    } catch (Exception e) {
        throw new ControllerExecutionException("Unable to execute include: " + e.getMessage(), e);
    } finally {
        WebUtils.cleanupIncludeRequestAttributes(request, toRestore);
    }
}

Example 33 with RequestDispatcher

use of javax.servlet.RequestDispatcher in project groovy-core by groovy.

the class ServletBinding method include.

public void include(String path) throws ServletException, IOException {
    HttpServletRequest request = (HttpServletRequest) super.getVariable("request");
    HttpServletResponse response = (HttpServletResponse) super.getVariable("response");
    RequestDispatcher dispatcher = request.getRequestDispatcher(path);
    dispatcher.include(request, response);
}

Example 34 with RequestDispatcher

use of javax.servlet.RequestDispatcher in project groovy-core by groovy.

the class ServletBinding method forward.

public void forward(String path) throws ServletException, IOException {
    HttpServletRequest request = (HttpServletRequest) super.getVariable("request");
    HttpServletResponse response = (HttpServletResponse) super.getVariable("response");
    RequestDispatcher dispatcher = request.getRequestDispatcher(path);
    dispatcher.forward(request, response);
}

Example 35 with RequestDispatcher

use of javax.servlet.RequestDispatcher in project LIMaS by Kasabrella.

the class SearchMemberServlet method gotoPage.

/**
	 * ページ遷移
	 * @param request
	 * @param response
	 * @param page 遷移先
	 */
private void gotoPage(HttpServletRequest request, HttpServletResponse response, String page) throws ServletException, IOException {
    RequestDispatcher rd = request.getRequestDispatcher(page);
    rd.forward(request, response);
}