List of usage examples for javax.servlet.http HttpServletRequest getDateHeader
public long getDateHeader(String name);
long value that represents a Date object. From source file:$.ResourceServlet.java
@Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String resourcePath = StringUtils.substringBefore(request.getPathInfo(), ";"); if (LOG.isDebugEnabled()) { LOG.debug("Processing request for resource {}.", resourcePath); }/* w w w. j a v a 2s . co m*/ URL resource = getResourceURL(resourcePath); if (resource == null) { if (LOG.isDebugEnabled()) { LOG.debug("Resource not found: {}", resourcePath); } response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } long ifModifiedSince = request.getDateHeader("If-Modified-Since"); URLConnection conn = resource.openConnection(); long lastModified = conn.getLastModified(); if (ifModifiedSince >= lastModified) { if (LOG.isDebugEnabled()) { LOG.debug("Resource: {} Not Modified.", resourcePath); } response.setStatus(304); return; } int contentLength = conn.getContentLength(); prepareResponse(response, resource, lastModified, contentLength); OutputStream out = selectOutputStream(request, response); try { InputStream is = conn.getInputStream(); try { byte[] buffer = new byte[1024]; int bytesRead = -1; while ((bytesRead = is.read(buffer)) != -1) { out.write(buffer, 0, bytesRead); } } finally { is.close(); } } finally { out.close(); } }
From source file:com.asual.lesscss.ResourceServlet.java
public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException { try {/*ww w . ja va2 s .c o m*/ String pkg = request.getParameter("pack"); String[] uri = (pkg != null) ? pkg.split(separator) : new String[] { request.getRequestURI().replaceAll("/+", "/") }; String mimeType = getResourceMimeType(uri[0]); long lastModified = 0; byte[] content = new byte[0]; for (String resource : uri) { resource = resource.replaceAll("^" + request.getContextPath(), ""); try { content = mergeContent(content, getResourceContent(resource)); } catch (FileNotFoundException e) { response.setStatus(HttpServletResponse.SC_NOT_FOUND); return; } catch (ResourceNotFoundException e) { response.setStatus(HttpServletResponse.SC_NOT_FOUND); return; } lastModified = Math.max(lastModified, getResourceLastModified(resource)); } long ifModifiedSince = request.getDateHeader("If-Modified-Since"); if (ifModifiedSince != 0 && ifModifiedSince / milliseconds == lastModified / milliseconds) { logger.debug("Return with SC_NOT_MODIFIED, since " + ifModifiedSince + " == " + lastModified); response.setStatus(HttpServletResponse.SC_NOT_MODIFIED); return; } response.setContentType(mimeType + (mimeType.startsWith("text/") ? ";charset=" + charset : "")); if (cache) { response.setDateHeader("Expires", System.currentTimeMillis() + maxAge * milliseconds); response.setDateHeader("Last-Modified", lastModified); response.setHeader("Cache-control", "max-age=" + maxAge); } else { response.setDateHeader("Expires", System.currentTimeMillis()); response.setDateHeader("Last-Modified", System.currentTimeMillis()); response.setHeader("Cache-control", "max-age=0"); } response.setContentLength(content.length); response.getOutputStream().write(content); response.getOutputStream().flush(); response.getOutputStream().close(); } catch (Exception e) { throw new ServletException(e.getMessage(), e); } }
From source file:org.kurento.repository.internal.http.RepositoryHttpServlet.java
/** * Check if the if-modified-since condition is satisfied. * * @param request//from w ww . jav a2 s.c om * The servlet request we are processing * @param response * The servlet response we are creating * @param resourceAttributes * File object * @return boolean true if the resource meets the specified condition, and false if the condition * is not satisfied, in which case request processing is stopped */ protected boolean checkIfModifiedSince(HttpServletRequest request, HttpServletResponse response, RepositoryItemAttributes resourceAttributes) { try { long headerValue = request.getDateHeader("If-Modified-Since"); long lastModified = resourceAttributes.getLastModified(); if (headerValue != -1) { // If an If-None-Match header has been specified, if modified // since // is ignored. if (request.getHeader("If-None-Match") == null && lastModified < headerValue + 1000) { // The entity has not been modified since the date // specified by the client. This is not an error case. response.setStatus(SC_NOT_MODIFIED); response.setHeader("ETag", resourceAttributes.getETag()); return false; } } } catch (IllegalArgumentException illegalArgument) { return true; } return true; }
From source file:com.kurento.kmf.repository.internal.http.RepositoryHttpServlet.java
/** * Check if the if-modified-since condition is satisfied. * /*from ww w .java 2 s .c om*/ * @param request * The servlet request we are processing * @param response * The servlet response we are creating * @param resourceAttributes * File object * @return boolean true if the resource meets the specified condition, and * false if the condition is not satisfied, in which case request * processing is stopped */ protected boolean checkIfModifiedSince(HttpServletRequest request, HttpServletResponse response, RepositoryItemAttributes resourceAttributes) { try { long headerValue = request.getDateHeader("If-Modified-Since"); long lastModified = resourceAttributes.getLastModified(); if (headerValue != -1) { // If an If-None-Match header has been specified, if modified // since // is ignored. if ((request.getHeader("If-None-Match") == null) && (lastModified < headerValue + 1000)) { // The entity has not been modified since the date // specified by the client. This is not an error case. response.setStatus(SC_NOT_MODIFIED); response.setHeader("ETag", resourceAttributes.getETag()); return false; } } } catch (IllegalArgumentException illegalArgument) { return true; } return true; }
From source file:org.openmrs.module.atomfeed.web.AtomFeedDownloadServlet.java
/** * This method is called by the servlet container to process a HEAD request made by RSS readers * against the /atomfeed URI//from w w w . j a va 2 s . co m * * @see javax.servlet.http.HttpServlet#doHead(javax.servlet.http.HttpServletRequest, * javax.servlet.http.HttpServletResponse) * @should send not modified error if atom feed has not changed * @should send valid headers if atom feed has changed */ public void doHead(HttpServletRequest req, HttpServletResponse resp) throws IOException { // read atomfeed header specific information from the header file String headerFileContent = AtomFeedUtil.readFeedHeaderFile(); int contentLength = 0; String etagToken = ""; Date lastModified = null; if (StringUtils.isNotBlank(headerFileContent)) { contentLength = headerFileContent.length() + Integer .valueOf(StringUtils.substringBetween(headerFileContent, "<entriesSize>", "</entriesSize>")); etagToken = StringUtils.substringBetween(headerFileContent, "<versionId>", "</versionId>"); try { lastModified = new SimpleDateFormat(AtomFeedUtil.RFC_3339_DATE_FORMAT) .parse(StringUtils.substringBetween(headerFileContent, "<updated>", "</updated>")); } catch (ParseException e) { // ignore it here } } // set the content length and type resp.setContentLength(contentLength); resp.setContentType("application/atom+xml"); resp.setCharacterEncoding("UTF-8"); // compare previous ETag token with current one String previousEtagToken = req.getHeader("If-None-Match"); Calendar ifModifiedSince = Calendar.getInstance(); long ifModifiedSinceInMillis = req.getDateHeader("If-Modified-Since"); ifModifiedSince.setTimeInMillis(ifModifiedSinceInMillis); if (((etagToken != null) && (previousEtagToken != null && previousEtagToken.equals('"' + etagToken + '"'))) || (ifModifiedSinceInMillis > 0 && ifModifiedSince.getTime().compareTo(lastModified) >= 0)) { // send 304 status code that indicates that resource has not been modified resp.sendError(HttpServletResponse.SC_NOT_MODIFIED); // re-use original last modified time-stamp resp.setHeader("Last-Modified", req.getHeader("If-Modified-Since")); // no further processing required return; } // set header for the next time the client calls if (etagToken != null) { resp.setHeader("ETag", '"' + etagToken + '"'); // set the last modified time if it's already specified if (lastModified == null) { // otherwise set the last modified time to now Calendar cal = Calendar.getInstance(); cal.set(Calendar.MILLISECOND, 0); lastModified = cal.getTime(); } resp.setDateHeader("Last-Modified", lastModified.getTime()); } }
From source file:org.kurento.repository.internal.http.RepositoryHttpServlet.java
/** * Check if the if-unmodified-since condition is satisfied. * * @param request/*from w w w. j ava2s . c o m*/ * The servlet request we are processing * @param response * The servlet response we are creating * @param resourceAttributes * File object * @return boolean true if the resource meets the specified condition, and false if the condition * is not satisfied, in which case request processing is stopped */ protected boolean checkIfUnmodifiedSince(HttpServletRequest request, HttpServletResponse response, RepositoryItemAttributes resourceAttributes) throws IOException { try { long lastModified = resourceAttributes.getLastModified(); long headerValue = request.getDateHeader("If-Unmodified-Since"); if (headerValue != -1) { if (lastModified >= headerValue + 1000) { // The entity has not been modified since the date // specified by the client. This is not an error case. response.sendError(SC_PRECONDITION_FAILED); return false; } } } catch (IllegalArgumentException illegalArgument) { return true; } return true; }
From source file:com.kurento.kmf.repository.internal.http.RepositoryHttpServlet.java
/** * Check if the if-unmodified-since condition is satisfied. * /* www . j a v a 2 s . co m*/ * @param request * The servlet request we are processing * @param response * The servlet response we are creating * @param resourceAttributes * File object * @return boolean true if the resource meets the specified condition, and * false if the condition is not satisfied, in which case request * processing is stopped */ protected boolean checkIfUnmodifiedSince(HttpServletRequest request, HttpServletResponse response, RepositoryItemAttributes resourceAttributes) throws IOException { try { long lastModified = resourceAttributes.getLastModified(); long headerValue = request.getDateHeader("If-Unmodified-Since"); if (headerValue != -1) { if (lastModified >= (headerValue + 1000)) { // The entity has not been modified since the date // specified by the client. This is not an error case. response.sendError(SC_PRECONDITION_FAILED); return false; } } } catch (IllegalArgumentException illegalArgument) { return true; } return true; }
From source file:com.netspective.sparx.navigate.NavigationControllerServlet.java
protected void renderPage(NavigationContext nc) throws ServletException, IOException { final HttpServletResponse httpResponse = nc.getHttpResponse(); if (isSecure()) { HttpLoginManager loginManager = getLoginManager(); LoginDialogMode loginDialogMode = LoginDialogMode.ACCESS_ALLOWED; if (loginManager != null) { loginDialogMode = loginManager.getLoginDialogMode(nc); // if we're getting input or we're denying login it means that the presentation is complete (HTML is already on the screen) if (loginDialogMode == LoginDialogMode.GET_INPUT || loginDialogMode == LoginDialogMode.LOGIN_DENIED) return; }//w w w. j a va 2s .com // if we get to here, it means that the login dialog mode is either LOGIN_ACCEPTED (user has just logged in) or ACCESS_ALLOWED // which means that access was previously granted and the user is still valid // check to see if the user has recently logged in and is using the wrong navigation tree if (loginDialogMode == LoginDialogMode.LOGIN_ACCEPTED) { AuthenticatedUser user = nc.getAuthenticatedUser(); if (user instanceof NavigationControllerAuthenticatedUser) { NavigationControllerAuthenticatedUser ncUser = (NavigationControllerAuthenticatedUser) user; if (ncUser.hasUserSpecificNavigationTree()) { NavigationTree userTree = ncUser.getUserSpecificNavigationTree(this, nc.getHttpRequest(), httpResponse); if (userTree != null && nc.getOwnerTree() != userTree) { // we want to redirect back to the home page of the navigation tree so that the proper tree // will be picked up by the createContext() method ncUser.redirectToUserTree(nc); return; } } } } } NavigationPage activePage = nc.getActivePage(); if (activePage != null) { nc.getResponse().setContentType("text/html"); if (nc.isActivePageValid()) { // make any necessary state changes (such as permissions, conditionals, etc). activePage.makeStateChanges(nc); // check to see if we have static content and we're in development mode (because in development presumably we don't want // anything to be static since 'static' is a performance attribute, not functionality if (!nc.getRuntimeEnvironmentFlags().isDevelopment() && activePage.getFlags().flagIsSet(NavigationPage.Flags.STATIC_CONTENT)) { final HttpServletRequest httpRequest = nc.getHttpRequest(); String staticPageKey = httpRequest.getServletPath() + httpRequest.getPathInfo(); Date lastModfTime = (Date) staticPagesRendered.get(staticPageKey); // If the client sent an If-Modified-Since header equal or after the // servlet's last modified time, send a short "Not Modified" status code // Round down to the nearest second since client headers are in seconds if (lastModfTime != null && httpRequest.getMethod().equals("GET") && ((lastModfTime.getTime() / 1000 * 1000) <= httpRequest .getDateHeader("If-Modified-Since"))) { httpResponse.setStatus(HttpServletResponse.SC_NOT_MODIFIED); return; } else { Date now = new Date(); httpResponse.setDateHeader("Last-Modified", now.getTime()); staticPagesRendered.put(staticPageKey, now); } } // if we get to there we're not static content or we're static but being rendered for the first // time in this instance of the servlet if (activePage.isRawHandler(nc)) activePage.handlePageRaw(nc); else activePage.handlePage(nc.getResponse().getWriter(), nc); } else activePage.handleInvalidPage(nc.getResponse().getWriter(), nc); } else { Writer writer = nc.getResponse().getWriter(); NavigationSkin skin = nc.getSkin(); NavigationTree tree = nc.getOwnerTree(); skin.renderPageMetaData(writer, nc); skin.renderPageHeader(writer, nc); writer.write("No page located for path '" + nc.getActivePathFindResults().getSearchedForPath() + "'."); if (nc.getRuntimeEnvironmentFlags().flagIsSet(RuntimeEnvironmentFlags.DEVELOPMENT)) { writer.write("<pre>\n"); writer.write(tree.toString()); writer.write("</pre>\n"); } skin.renderPageFooter(writer, nc); } }
From source file:net.lightbody.bmp.proxy.jetty.jetty.servlet.Default.java
protected boolean passConditionalHeaders(HttpServletRequest request, HttpServletResponse response, Resource resource) throws IOException { if (!request.getMethod().equals(HttpRequest.__HEAD) && request.getAttribute(Dispatcher.__INCLUDE_REQUEST_URI) == null) { // If we have meta data for the file // Try a direct match for most common requests. Avoids // parsing the date. ResourceCache.ResourceMetaData metaData = _httpContext.getResourceMetaData(resource); if (metaData != null) { String ifms = request.getHeader(HttpFields.__IfModifiedSince); String mdlm = metaData.getLastModified(); if (ifms != null && mdlm != null && ifms.equals(mdlm)) { response.reset();/*from w w w.j av a 2s .c om*/ response.setStatus(HttpResponse.__304_Not_Modified); response.flushBuffer(); return false; } } long date = 0; // Parse the if[un]modified dates and compare to resource if ((date = request.getDateHeader(HttpFields.__IfUnmodifiedSince)) > 0) { if (resource.lastModified() / 1000 > date / 1000) { response.sendError(HttpResponse.__412_Precondition_Failed); return false; } } if ((date = request.getDateHeader(HttpFields.__IfModifiedSince)) > 0) { if (resource.lastModified() / 1000 <= date / 1000) { response.reset(); response.setStatus(HttpResponse.__304_Not_Modified); response.flushBuffer(); return false; } } } return true; }
From source file:com.nesscomputing.httpserver.jetty.ClasspathResourceHandler.java
@Override public void handle(final String target, final Request baseRequest, final HttpServletRequest request, final HttpServletResponse response) throws IOException, ServletException { if (baseRequest.isHandled()) { return;/*www. j a va2s. co m*/ } String pathInfo = request.getPathInfo(); // Only serve the content if the request matches the base path. if (pathInfo == null || !pathInfo.startsWith(basePath)) { return; } pathInfo = pathInfo.substring(basePath.length()); if (!pathInfo.startsWith("/") && !pathInfo.isEmpty()) { // basepath is /foo and request went to /foobar --> pathInfo starts with bar // basepath is /foo and request went to /foo --> pathInfo should be /index.html return; } // Allow index.html as welcome file if ("/".equals(pathInfo) || "".equals(pathInfo)) { pathInfo = "/index.html"; } boolean skipContent = false; // When a request hits this handler, it will serve something. Either data or an error. baseRequest.setHandled(true); final String method = request.getMethod(); if (!StringUtils.equals(HttpMethods.GET, method)) { if (StringUtils.equals(HttpMethods.HEAD, method)) { skipContent = true; } else { response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED); return; } } // Does the request contain an IF_MODIFIED_SINCE header? final long ifModifiedSince = request.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE); if (ifModifiedSince > 0 && startupTime <= ifModifiedSince / 1000 && !is304Disabled) { response.setStatus(HttpServletResponse.SC_NOT_MODIFIED); return; } InputStream resourceStream = null; try { if (pathInfo.startsWith("/")) { final String resourcePath = resourceLocation + pathInfo; resourceStream = getClass().getResourceAsStream(resourcePath); } if (resourceStream == null) { response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } final Buffer mime = MIME_TYPES.getMimeByExtension(request.getPathInfo()); if (mime != null) { response.setContentType(mime.toString("ISO8859-1")); } response.setDateHeader(HttpHeaders.LAST_MODIFIED, startupTime * 1000L); if (skipContent) { return; } // Send the content out. Lifted straight out of ResourceHandler.java OutputStream out = null; try { out = response.getOutputStream(); } catch (IllegalStateException e) { out = new WriterOutputStream(response.getWriter()); } if (out instanceof AbstractHttpConnection.Output) { ((AbstractHttpConnection.Output) out).sendContent(resourceStream); } else { ByteStreams.copy(resourceStream, out); } } finally { IOUtils.closeQuietly(resourceStream); } }