List of usage examples for javax.servlet.http HttpServletResponse reset
public void reset();
From source file:net.sourceforge.fenixedu.presentationTier.Action.teacher.onlineTests.TestsManagementAction.java
public ActionForward showImage(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws FenixActionException { final String exerciseCode = getStringFromRequest(request, "exerciseCode"); final Integer imgCode = getCodeFromRequest(request, "imgCode"); final String imgTypeString = request.getParameter("imgType"); final String studentCode = getStringFromRequest(request, "studentCode"); final String optionShuffle = request.getParameter("optionShuffle"); final String testCode = getStringFromRequest(request, "testCode"); final Integer itemIndex = getCodeFromRequest(request, "item"); final Integer feedbackCode = getCodeFromRequest(request, "feedbackCode"); String img = null;//from w w w . j a v a 2 s . c o m if (studentCode != null && testCode != null) { try { img = ReadStudentTestQuestionImage.run(studentCode, testCode, exerciseCode, imgCode, feedbackCode, itemIndex); } catch (FenixServiceException e) { throw new FenixActionException(e); } } else if (optionShuffle != null && !Strings.isNullOrEmpty(testCode)) { try { img = ReadQuestionImage.run(testCode, exerciseCode, optionShuffle, imgCode, feedbackCode); } catch (FenixServiceException e) { throw new FenixActionException(e); } } else { try { img = ReadQuestionImage.run(exerciseCode, imgCode, feedbackCode, itemIndex); } catch (FenixServiceException e) { throw new FenixActionException(e); } } byte[] imageData = BaseEncoding.base64().decode(img); try { response.reset(); response.setContentType(imgTypeString); response.setContentLength(imageData.length); response.setBufferSize(imageData.length); String imageName = "image" + exerciseCode + imgCode + "." + imgTypeString.substring(imgTypeString.lastIndexOf("/") + 1, imgTypeString.length()); response.setHeader("Content-disposition", "attachment; filename=" + imageName); DataOutputStream dataOut = new DataOutputStream(response.getOutputStream()); dataOut.write(imageData); response.flushBuffer(); } catch (java.io.IOException e) { throw new FenixActionException(e); } return null; }
From source file:org.apache.roller.weblogger.ui.rendering.servlets.MediaResourceServlet.java
/** * Handles requests for user uploaded media file resources. *///from w ww .j a v a2s. c o m public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { MediaFileManager mfMgr = WebloggerFactory.getWeblogger().getMediaFileManager(); Weblog weblog = null; String ctx = request.getContextPath(); String servlet = request.getServletPath(); String reqURI = request.getRequestURI(); WeblogMediaResourceRequest resourceRequest = null; try { // parse the incoming request and extract the relevant data resourceRequest = new WeblogMediaResourceRequest(request); weblog = resourceRequest.getWeblog(); if (weblog == null) { throw new WebloggerException("unable to lookup weblog: " + resourceRequest.getWeblogHandle()); } } catch (Exception e) { // invalid resource request or weblog doesn't exist log.debug("error creating weblog resource request", e); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } long resourceLastMod = 0; InputStream resourceStream = null; MediaFile mediaFile = null; try { mediaFile = mfMgr.getMediaFile(resourceRequest.getResourceId(), true); resourceLastMod = mediaFile.getLastModified(); } catch (Exception ex) { // still not found? then we don't have it, 404. log.debug("Unable to get resource", ex); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } // Respond with 304 Not Modified if it is not modified. if (ModDateHeaderUtil.respondIfNotModified(request, response, resourceLastMod)) { return; } else { // set last-modified date ModDateHeaderUtil.setLastModifiedHeader(response, resourceLastMod); } // set the content type based on whatever is in our web.xml mime defs if (resourceRequest.isThumbnail()) { response.setContentType("image/png"); try { resourceStream = mediaFile.getThumbnailInputStream(); } catch (Exception e) { if (log.isDebugEnabled()) { log.debug("ERROR loading thumbnail for " + mediaFile.getId(), e); } else { log.warn("ERROR loading thumbnail for " + mediaFile.getId()); } } } if (resourceStream == null) { response.setContentType(mediaFile.getContentType()); resourceStream = mediaFile.getInputStream(); } OutputStream out = null; try { // ok, lets serve up the file byte[] buf = new byte[8192]; int length = 0; out = response.getOutputStream(); while ((length = resourceStream.read(buf)) > 0) { out.write(buf, 0, length); } // close output stream out.close(); } catch (Throwable ex) { log.error("ERROR", ex); if (!response.isCommitted()) { response.reset(); response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); } } finally { // make sure stream to resource file is closed resourceStream.close(); } }
From source file:org.openmeetings.servlet.outputhandler.BackupExport.java
public void service(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, ServletContext servletCtx) throws ServletException, IOException { String sid = httpServletRequest.getParameter("sid"); if (sid == null) { sid = "default"; }// w ww . j a v a 2 s . c om log.debug("sid: " + sid); Long users_id = sessionManagement.checkSession(sid); Long user_level = userManagement.getUserLevelByID(users_id); log.debug("users_id: " + users_id); log.debug("user_level: " + user_level); if (authLevelManagement.checkAdminLevel(user_level)) { // if (true) { String includeFileOption = httpServletRequest.getParameter("includeFileOption"); boolean includeFiles = includeFileOption == null || "yes".equals(includeFileOption); String moduleName = httpServletRequest.getParameter("moduleName"); if (moduleName == null) { moduleName = "moduleName"; } log.debug("moduleName: " + moduleName); if (moduleName.equals("backup")) { /* * ##################### Create Base Folder structure */ String current_dir = servletCtx.getRealPath("/"); File working_dir = new File(new File(current_dir, OpenmeetingsVariables.UPLOAD_DIR), "backup"); if (!working_dir.exists()) { working_dir.mkdir(); } String dateString = "backup_" + CalendarPatterns.getTimeForStreamId(new Date()); File backup_dir = new File(working_dir, dateString); String requestedFile = dateString + ".zip"; File backupFile = new File(backup_dir, requestedFile); String full_path = backupFile.getAbsolutePath(); try { performExport(full_path, backup_dir, includeFiles, current_dir); RandomAccessFile rf = new RandomAccessFile(full_path, "r"); httpServletResponse.reset(); httpServletResponse.resetBuffer(); httpServletResponse.setContentType("APPLICATION/OCTET-STREAM"); httpServletResponse.setHeader("Content-Disposition", "attachment; filename=\"" + requestedFile + "\""); httpServletResponse.setHeader("Content-Length", "" + rf.length()); OutputStream out = httpServletResponse.getOutputStream(); byte[] buffer = new byte[1024]; int readed = -1; while ((readed = rf.read(buffer, 0, buffer.length)) > -1) { out.write(buffer, 0, readed); } rf.close(); out.flush(); out.close(); } catch (Exception er) { log.error("Error exporting: ", er); } if (backupFile.exists()) { // log.debug("DELETE :1: "+backupFile.getAbsolutePath()); backupFile.delete(); } deleteDirectory(backup_dir); } } else { log.debug("ERROR LangExport: not authorized FileDownload " + (new Date())); } }
From source file:org.apache.roller.weblogger.ui.rendering.servlets.ResourceServlet.java
/** * Handles requests for user uploaded resources. *//*from w ww . j av a2 s .c o m*/ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Weblog weblog = null; String ctx = request.getContextPath(); String servlet = request.getServletPath(); String reqURI = request.getRequestURI(); WeblogResourceRequest resourceRequest = null; try { // parse the incoming request and extract the relevant data resourceRequest = new WeblogResourceRequest(request); weblog = resourceRequest.getWeblog(); if (weblog == null) { throw new WebloggerException("unable to lookup weblog: " + resourceRequest.getWeblogHandle()); } } catch (Exception e) { // invalid resource request or weblog doesn't exist log.debug("error creating weblog resource request", e); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } log.debug("Resource requested [" + resourceRequest.getResourcePath() + "]"); long resourceLastMod = 0; InputStream resourceStream = null; // first see if resource comes from weblog's shared theme try { WeblogTheme weblogTheme = weblog.getTheme(); if (weblogTheme != null) { ThemeResource resource = weblogTheme.getResource(resourceRequest.getResourcePath()); if (resource != null) { resourceLastMod = resource.getLastModified(); resourceStream = resource.getInputStream(); } } } catch (Exception ex) { // hmmm, some kind of error getting theme. that's an error. response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); return; } // if not from theme then see if resource is in weblog's upload dir if (resourceStream == null) { try { MediaFileManager mmgr = WebloggerFactory.getWeblogger().getMediaFileManager(); MediaFile mf = mmgr.getMediaFileByOriginalPath(weblog, resourceRequest.getResourcePath()); resourceLastMod = mf.getLastModified(); resourceStream = mf.getInputStream(); } catch (Exception ex) { // still not found? then we don't have it, 404. log.debug("Unable to get resource", ex); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } } // Respond with 304 Not Modified if it is not modified. if (ModDateHeaderUtil.respondIfNotModified(request, response, resourceLastMod)) { return; } else { // set last-modified date ModDateHeaderUtil.setLastModifiedHeader(response, resourceLastMod); } // set the content type based on whatever is in our web.xml mime defs response.setContentType(this.context.getMimeType(resourceRequest.getResourcePath())); OutputStream out = null; try { // ok, lets serve up the file byte[] buf = new byte[8192]; int length = 0; out = response.getOutputStream(); while ((length = resourceStream.read(buf)) > 0) { out.write(buf, 0, length); } // close output stream out.close(); } catch (Exception ex) { if (!response.isCommitted()) { response.reset(); response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); } } finally { // make sure stream to resource file is closed resourceStream.close(); } }
From source file:org.flowerplatform.util.servlet.PublicResourcesServlet.java
/** * @author Cristian Spiescu/*from w ww . ja v a 2 s .c om*/ * @author Sebastian Solomon * @author Cristina Constantinescu */ @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException { String requestedFile = request.getPathInfo(); if (logger.isTraceEnabled()) { logger.trace("Resource requested: {}", requestedFile); } // Check if file is actually supplied to the request URI. if (requestedFile == null) { send404(request, response); return; } // Decode the file name (might contain spaces and on) and prepare file object. // solution for: .../icons/0%.png // The URL decoder expects the %to precede a character code // replace(%) with %25 before decoding // http://stackoverflow.com/questions/6067673/urldecoder-illegal-hex-characters-in-escape-pattern-for-input-string requestedFile = requestedFile.replaceAll("%(?![0-9a-fA-F]{2})", "%25"); requestedFile = URLDecoder.decode(requestedFile, "UTF-8"); if (requestedFile.startsWith(UtilConstants.PUBLIC_RESOURCES_PATH_PREFIX)) { requestedFile = requestedFile.substring(UtilConstants.PUBLIC_RESOURCES_PATH_PREFIX.length()); } // this may be an attempt to see files that are not public, i.e. to go to the // parent. From my tests, when you put in the browser (or even telnet) something like // parent1/parent2/../bla, it seems to be automatically translated to parent1/bla. However, // I wanted to make sure that we are all right if (requestedFile.contains("..")) { send404(request, response); return; } // we need something like /plugin/file.... int indexOfSecondSlash = requestedFile.indexOf('/', 1); // 1, i.e. skip the first index if (indexOfSecondSlash < 0) { send404(request, response); return; } // both variables are prefixed with / String plugin = requestedFile.substring(0, indexOfSecondSlash); String file = requestedFile.substring(indexOfSecondSlash); // if | is supplied => the file is a zip, and we want what's in it int indexOfZipSeparator = file.indexOf(UtilConstants.RESOURCE_PATH_SEPARATOR); String fileInsideZipArchive = null; if (indexOfZipSeparator >= 0 && indexOfZipSeparator < file.length() - 1) { // has | and | is not the last char in the string fileInsideZipArchive = file.substring(indexOfZipSeparator + 1); file = file.substring(0, indexOfZipSeparator); } String mapValue = null; String mapKey = null; // if the file is in a zip, search first in the Temp folder if (fileInsideZipArchive != null) { mapKey = createMapKey(file, fileInsideZipArchive).intern(); if (useFilesFromTemporaryDirectory) { mapValue = tempFilesMap.get(mapKey); } } else { // we don't need synchronization if the file is not inside archive (so we don't use .intern) mapKey = createMapKey(file, fileInsideZipArchive); } synchronized (mapKey) { if (useFilesFromTemporaryDirectory) { if (fileInsideZipArchive != null) { if (mapValue != null) { // file exists in 'tempFilesMap' if (getTempFile(mapValue).exists()) { response.reset(); response.setBufferSize(DEFAULT_BUFFER_SIZE); response.setContentType(fileInsideZipArchive); InputStream input = new FileInputStream(getTempFilePath(mapValue)); OutputStream output = response.getOutputStream(); IOUtils.copy(input, output); input.close(); output.close(); logger.debug("File {} served from temp", mapValue); return; } else { // temporary file was deleted from disk logger.debug("File {} found to be missing from temp", mapValue); } } else { synchronized (this) { counter++; mapValue = counter + ""; tempFilesMap.put(mapKey, mapValue); logger.debug("mapValue '{}' added", mapValue); } } } } requestedFile = "platform:/plugin" + plugin + "/" + UtilConstants.PUBLIC_RESOURCES_DIR + file; // Get content type by filename from the file or file inside zip String contentType = getServletContext() .getMimeType(fileInsideZipArchive != null ? fileInsideZipArchive : file); // If content type is unknown, then set the default value. // For all content types, see: // http://www.w3schools.com/media/media_mimeref.asp // To add new content types, add new mime-mapping entry in web.xml. if (contentType == null) { contentType = "application/octet-stream"; } // Init servlet response. response.reset(); response.setBufferSize(DEFAULT_BUFFER_SIZE); response.setContentType(contentType); // response.setHeader("Content-Length", String.valueOf(file.length())); // response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getName() + "\""); // Prepare streams. URL url; InputStream input = null; Closeable inputCloseable = null; OutputStream output = null; try { url = new URL(requestedFile); try { input = url.openConnection().getInputStream(); inputCloseable = input; } catch (IOException e) { // may fail if the resource is not available send404(request, response); return; } if (fileInsideZipArchive != null) { // we need to look for a file in the archive Pair<InputStream, Closeable> pair = getInputStreamForFileWithinZip(input, fileInsideZipArchive); if (pair == null) { // the file was not found; the input streams are closed in this case send404(request, response); return; } input = pair.a; inputCloseable = pair.b; if (useFilesFromTemporaryDirectory) { // write the file from archive in Temp folder if (!UtilConstants.TEMP_FOLDER.exists()) { UtilConstants.TEMP_FOLDER.mkdir(); } Files.copy(input, getTempFile(mapValue).toPath(), StandardCopyOption.REPLACE_EXISTING); logger.debug("file '{}' was writen in temp", mapValue); input.close(); input = new FileInputStream(getTempFilePath(mapValue)); } } output = response.getOutputStream(); // according to the doc, no need to use Buffered..., because the method buffers internally IOUtils.copy(input, output); } finally { // Gently close streams. close(output); close(inputCloseable); close(input); } } }
From source file:fll.web.api.SubjectiveScoresServlet.java
@SuppressFBWarnings(value = {
"SQL_PREPARED_STATEMENT_GENERATED_FROM_NONCONSTANT_STRING" }, justification = "columns and category are dynamic")
@Override/*from ww w .j a v a2s . c o m*/
protected final void doGet(final HttpServletRequest request, final HttpServletResponse response)
throws IOException, ServletException {
final ServletContext application = getServletContext();
final DataSource datasource = ApplicationAttributes.getDataSource(application);
Connection connection = null;
PreparedStatement prep = null;
ResultSet rs = null;
try {
connection = datasource.getConnection();
final int currentTournament = Queries.getCurrentTournament(connection);
// category->judge->teamNumber->score
final Map<String, Map<String, Map<Integer, SubjectiveScore>>> allScores = new HashMap<String, Map<String, Map<Integer, SubjectiveScore>>>();
final ChallengeDescription challengeDescription = ApplicationAttributes
.getChallengeDescription(application);
for (final ScoreCategory sc : challengeDescription.getSubjectiveCategories()) {
// judge->teamNumber->score
final Map<String, Map<Integer, SubjectiveScore>> categoryScores = new HashMap<String, Map<Integer, SubjectiveScore>>();
prep = connection.prepareStatement("SELECT * FROM " + sc.getName() + " WHERE Tournament = ?");
prep.setInt(1, currentTournament);
rs = prep.executeQuery();
while (rs.next()) {
final SubjectiveScore score = new SubjectiveScore();
score.setScoreOnServer(true);
final String judge = rs.getString("Judge");
final Map<Integer, SubjectiveScore> judgeScores;
if (categoryScores.containsKey(judge)) {
judgeScores = categoryScores.get(judge);
} else {
judgeScores = new HashMap<Integer, SubjectiveScore>();
categoryScores.put(judge, judgeScores);
}
score.setTeamNumber(rs.getInt("TeamNumber"));
score.setJudge(judge);
score.setNoShow(rs.getBoolean("NoShow"));
score.setNote(rs.getString("note"));
final Map<String, Double> standardSubScores = new HashMap<String, Double>();
final Map<String, String> enumSubScores = new HashMap<String, String>();
for (final AbstractGoal goal : sc.getGoals()) {
if (goal.isEnumerated()) {
final String value = rs.getString(goal.getName());
enumSubScores.put(goal.getName(), value);
} else {
final double value = rs.getDouble(goal.getName());
standardSubScores.put(goal.getName(), value);
}
}
score.setStandardSubScores(standardSubScores);
score.setEnumSubScores(enumSubScores);
judgeScores.put(score.getTeamNumber(), score);
}
allScores.put(sc.getName(), categoryScores);
SQLFunctions.close(rs);
rs = null;
SQLFunctions.close(prep);
prep = null;
}
final ObjectMapper jsonMapper = new ObjectMapper();
response.reset();
response.setContentType("application/json");
final PrintWriter writer = response.getWriter();
jsonMapper.writeValue(writer, allScores);
} catch (final SQLException e) {
throw new RuntimeException(e);
} finally {
SQLFunctions.close(rs);
SQLFunctions.close(prep);
SQLFunctions.close(connection);
}
}
From source file:com.bst.tags.TableTag.java
/** * Will write the export. The default behavior is to write directly to the response. If the ResponseOverrideFilter * is configured for this request, will instead write the exported content to a map in the Request object. * @param exportView export view//from w w w . ja v a2s .co m * @throws JspException for problem in clearing the response or for invalid export views * @throws IOException exception thrown when writing content to the response */ protected void writeExport(ExportView exportView) throws IOException, JspException { String filename = properties.getExportFileName(this.currentMediaType); HttpServletResponse response = (HttpServletResponse) this.pageContext.getResponse(); HttpServletRequest request = (HttpServletRequest) this.pageContext.getRequest(); Map bean = (Map) request.getAttribute(FILTER_CONTENT_OVERRIDE_BODY); boolean usingFilter = bean != null; String mimeType = exportView.getMimeType(); // original encoding, be sure to add it back after reset() String characterEncoding = response.getCharacterEncoding(); if (usingFilter) { if (!bean.containsKey(TableTagParameters.BEAN_BUFFER)) { // We are running under the export filter, call it log.debug("Exportfilter enabled in unbuffered mode, setting headers"); response.addHeader(TableTagParameters.PARAMETER_EXPORTING, TagConstants.EMPTY_STRING); } else { // We are running under the export filter in buffered mode bean.put(TableTagParameters.BEAN_CONTENTTYPE, mimeType); bean.put(TableTagParameters.BEAN_FILENAME, filename); if (exportView instanceof TextExportView) { StringWriter writer = new StringWriter(); ((TextExportView) exportView).doExport(writer); bean.put(TableTagParameters.BEAN_BODY, writer.toString()); } else if (exportView instanceof BinaryExportView) { ByteArrayOutputStream stream = new ByteArrayOutputStream(); ((BinaryExportView) exportView).doExport(stream); bean.put(TableTagParameters.BEAN_BODY, stream.toByteArray()); } else { throw new JspTagException("Export view " + exportView.getClass().getName() + " must implement TextExportView or BinaryExportView"); } return; } } else { log.debug("Exportfilter NOT enabled"); // response can't be already committed at this time if (response.isCommitted()) { throw new ExportException(getClass()); } try { response.reset(); pageContext.getOut().clearBuffer(); } catch (Exception e) { throw new ExportException(getClass()); } } if (!usingFilter && characterEncoding != null && mimeType.indexOf("charset") == -1) //$NON-NLS-1$ { mimeType += "; charset=" + characterEncoding; //$NON-NLS-1$ } response.setContentType(mimeType); if (StringUtils.isNotEmpty(filename)) { response.setHeader("Content-Disposition", //$NON-NLS-1$ "attachment; filename=\"" + filename + "\""); //$NON-NLS-1$ //$NON-NLS-2$ } if (exportView instanceof TextExportView) { Writer writer; if (usingFilter) { writer = response.getWriter(); } else { writer = pageContext.getOut(); } ((TextExportView) exportView).doExport(writer); } else if (exportView instanceof BinaryExportView) { // dealing with binary content // note that this is not assured to work on any application server if the filter is not enabled. According // to the jsp specs response.getOutputStream() should no be called in jsps. ((BinaryExportView) exportView).doExport(response.getOutputStream()); } else { throw new JspTagException("Export view " + exportView.getClass().getName() + " must implement TextExportView or BinaryExportView"); } log.debug("Export completed"); }
From source file:org.apache.roller.weblogger.ui.rendering.servlets.PreviewServlet.java
/** * Handle GET requests for weblog pages. */// w ww.ja va 2 s. c o m public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { log.debug("Entering"); Weblog weblog = null; WeblogPreviewRequest previewRequest = null; String type = null; try { previewRequest = new WeblogPreviewRequest(request); // type of the page we are going to preview type = previewRequest.getType(); // lookup weblog specified by preview request weblog = previewRequest.getWeblog(); if (weblog == null) { throw new WebloggerException("unable to lookup weblog: " + previewRequest.getWeblogHandle()); } } catch (Exception e) { // some kind of error parsing the request or getting weblog log.debug("error creating preview request", e); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } // Get the deviceType from user agent MobileDeviceRepository.DeviceType deviceType = MobileDeviceRepository.getRequestType(request); // for previews we explicitly set the deviceType attribute if (request.getParameter("type") != null) { deviceType = request.getParameter("type").equals("standard") ? MobileDeviceRepository.DeviceType.standard : MobileDeviceRepository.DeviceType.mobile; } Weblog tmpWebsite = weblog; if (previewRequest.getThemeName() != null) { // only create temporary weblog object if theme name was specified // in request, which indicates we're doing a theme preview // try getting the preview theme log.debug("preview theme = " + previewRequest.getThemeName()); Theme previewTheme = previewRequest.getTheme(); // construct a temporary Website object for this request // and set the EditorTheme to our previewTheme tmpWebsite = new Weblog(); tmpWebsite.setData(weblog); if (previewTheme != null && previewTheme.isEnabled()) { tmpWebsite.setEditorTheme(previewTheme.getId()); } else if (WeblogTheme.CUSTOM.equals(previewRequest.getThemeName())) { tmpWebsite.setEditorTheme(WeblogTheme.CUSTOM); } // we've got to set the weblog in our previewRequest because that's // the object that gets referenced during rendering operations previewRequest.setWeblog(tmpWebsite); } // do we need to force a specific locale for the request? if (previewRequest.getLocale() == null && !weblog.isShowAllLangs()) { previewRequest.setLocale(weblog.getLocale()); } Template page = null; if ("page".equals(previewRequest.getContext())) { page = previewRequest.getWeblogPage(); // If request specified tags section index, then look for custom template } else if ("tags".equals(previewRequest.getContext()) && previewRequest.getTags() == null) { try { page = weblog.getTheme().getTemplateByAction(ThemeTemplate.ACTION_TAGSINDEX); } catch (Exception e) { log.error("Error getting weblog page for action 'tagsIndex'", e); } // if we don't have a custom tags page then 404, we don't let // this one fall through to the default template if (page == null) { if (!response.isCommitted()) response.reset(); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } // If this is a permalink then look for a permalink template } else if (previewRequest.getWeblogAnchor() != null) { try { page = weblog.getTheme().getTemplateByAction(ThemeTemplate.ACTION_PERMALINK); } catch (Exception e) { log.error("Error getting weblog page for action 'permalink'", e); } } if (page == null) { try { page = tmpWebsite.getTheme().getDefaultTemplate(); } catch (WebloggerException re) { log.error("Error getting default page for preview", re); } } // Still no page? Then that is a 404 if (page == null) { if (!response.isCommitted()) response.reset(); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } log.debug("preview page found, dealing with it"); // set the content type String pageLink = previewRequest.getWeblogPageName(); String mimeType = pageLink != null ? RollerContext.getServletContext().getMimeType(pageLink) : null; String contentType = "text/html; charset=utf-8"; if (mimeType != null) { // we found a match ... set the content type contentType = mimeType + "; charset=utf-8"; } else if ("_css".equals(previewRequest.getWeblogPageName())) { // TODO: store content-type for each page so this hack is unnecessary contentType = "text/css; charset=utf-8"; } // looks like we need to render content Map model = new HashMap(); try { PageContext pageContext = JspFactory.getDefaultFactory().getPageContext(this, request, response, "", false, 8192, true); // special hack for menu tag request.setAttribute("pageRequest", previewRequest); // populate the rendering model Map initData = new HashMap(); initData.put("parsedRequest", previewRequest); initData.put("pageContext", pageContext); // define url strategy initData.put("urlStrategy", WebloggerFactory.getWeblogger().getUrlStrategy() .getPreviewURLStrategy(previewRequest.getThemeName())); // Load models for page previewing String pageModels = WebloggerConfig.getProperty("rendering.previewModels"); ModelLoader.loadModels(pageModels, model, initData, true); // Load special models for site-wide blog if (WebloggerRuntimeConfig.isSiteWideWeblog(weblog.getHandle())) { String siteModels = WebloggerConfig.getProperty("rendering.siteModels"); ModelLoader.loadModels(siteModels, model, initData, true); } // Load weblog custom models ModelLoader.loadCustomModels(weblog, model, initData); // ick, gotta load pre-3.0 model stuff as well :( ModelLoader.loadOldModels(model, request, response, pageContext, previewRequest, WebloggerFactory .getWeblogger().getUrlStrategy().getPreviewURLStrategy(previewRequest.getThemeName())); } catch (WebloggerException ex) { log.error("ERROR loading model for page", ex); if (!response.isCommitted()) response.reset(); response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); return; } // lookup Renderer we are going to use Renderer renderer = null; try { log.debug("Looking up renderer"); renderer = RendererManager.getRenderer(page, deviceType); } catch (Exception e) { // nobody wants to render my content :( log.error("Couldn't find renderer for page " + page.getId(), e); if (!response.isCommitted()) response.reset(); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } // render content. use default size of about 24K for a standard page CachedContent rendererOutput = new CachedContent(24567); try { log.debug("Doing rendering"); renderer.render(model, rendererOutput.getCachedWriter()); // flush rendered output and close rendererOutput.flush(); rendererOutput.close(); } catch (Exception e) { // bummer, error during rendering log.error("Error during rendering for page " + page.getId(), e); if (!response.isCommitted()) response.reset(); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } // post rendering process // flush rendered content to response log.debug("Flushing response output"); response.setContentType(contentType); response.setContentLength(rendererOutput.getContent().length); response.getOutputStream().write(rendererOutput.getContent()); log.debug("Exiting"); }
From source file:org.displaytag.tags.TableTag.java
/** * Will write the export. The default behavior is to write directly to the response. If the ResponseOverrideFilter * is configured for this request, will instead write the exported content to a map in the Request object. * /*from w w w . ja v a2 s .c om*/ * @param exportView export view * @throws JspException for problem in clearing the response or for invalid export views * @throws IOException exception thrown when writing content to the response */ protected void writeExport(ExportView exportView) throws IOException, JspException { String filename = this.properties.getExportFileName(this.currentMediaType); HttpServletResponse response = (HttpServletResponse) this.pageContext.getResponse(); HttpServletRequest request = (HttpServletRequest) this.pageContext.getRequest(); Map bean = (Map) request.getAttribute(FILTER_CONTENT_OVERRIDE_BODY); boolean usingFilter = bean != null; String mimeType = exportView.getMimeType(); // original encoding, be sure to add it back after reset() String characterEncoding = response.getCharacterEncoding(); if (usingFilter) { if (!bean.containsKey(TableTagParameters.BEAN_BUFFER)) { // We are running under the export filter, call it log.debug("Exportfilter enabled in unbuffered mode, setting headers"); response.addHeader(TableTagParameters.PARAMETER_EXPORTING, TagConstants.EMPTY_STRING); } else { // We are running under the export filter in buffered mode bean.put(TableTagParameters.BEAN_CONTENTTYPE, mimeType); bean.put(TableTagParameters.BEAN_FILENAME, filename); if (exportView instanceof TextExportView) { StringWriter writer = new StringWriter(); ((TextExportView) exportView).doExport(writer); bean.put(TableTagParameters.BEAN_BODY, writer.toString()); } else if (exportView instanceof BinaryExportView) { ByteArrayOutputStream stream = new ByteArrayOutputStream(); ((BinaryExportView) exportView).doExport(stream); bean.put(TableTagParameters.BEAN_BODY, stream.toByteArray()); } else { throw new JspTagException("Export view " + exportView.getClass().getName() + " must implement TextExportView or BinaryExportView"); } return; } } else { log.debug("Exportfilter NOT enabled"); // response can't be already committed at this time if (response.isCommitted()) { throw new ExportException(this.getClass()); } try { response.reset(); this.pageContext.getOut().clearBuffer(); } catch (Exception e) { throw new ExportException(this.getClass()); } } if (!usingFilter && characterEncoding != null && mimeType.indexOf("charset") == -1) //$NON-NLS-1$ { mimeType += "; charset=" + characterEncoding; //$NON-NLS-1$ } response.setContentType(mimeType); if (StringUtils.isNotEmpty(filename)) { response.setHeader("Content-Disposition", //$NON-NLS-1$ "attachment; filename=\"" + filename + "\""); //$NON-NLS-1$ //$NON-NLS-2$ } if (exportView instanceof TextExportView) { Writer writer; if (usingFilter) { writer = response.getWriter(); } else { writer = this.pageContext.getOut(); } ((TextExportView) exportView).doExport(writer); } else if (exportView instanceof BinaryExportView) { // dealing with binary content // note that this is not assured to work on any application server // if the filter is not enabled. According // to the jsp specs response.getOutputStream() should no be called // in jsps. ((BinaryExportView) exportView).doExport(response.getOutputStream()); } else { throw new JspTagException("Export view " + exportView.getClass().getName() + " must implement TextExportView or BinaryExportView"); } log.debug("Export completed"); }
From source file:org.apache.roller.weblogger.ui.rendering.servlets.PreviewResourceServlet.java
/** * Handles requests for user uploaded resources. *//*w ww . jav a2s. c om*/ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Weblog weblog = null; String ctx = request.getContextPath(); String servlet = request.getServletPath(); String reqURI = request.getRequestURI(); WeblogPreviewResourceRequest resourceRequest = null; try { // parse the incoming request and extract the relevant data resourceRequest = new WeblogPreviewResourceRequest(request); weblog = resourceRequest.getWeblog(); if (weblog == null) { throw new WebloggerException("unable to lookup weblog: " + resourceRequest.getWeblogHandle()); } } catch (Exception e) { // invalid resource request or weblog doesn't exist log.debug("error creating weblog resource request", e); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } log.debug("Resource requested [" + resourceRequest.getResourcePath() + "]"); long resourceLastMod = 0; InputStream resourceStream = null; // first, see if we have a preview theme to operate from if (!StringUtils.isEmpty(resourceRequest.getThemeName())) { Theme theme = resourceRequest.getTheme(); ThemeResource resource = theme.getResource(resourceRequest.getResourcePath()); if (resource != null) { resourceLastMod = resource.getLastModified(); resourceStream = resource.getInputStream(); } } // second, see if resource comes from weblog's configured shared theme if (resourceStream == null) { try { WeblogTheme weblogTheme = weblog.getTheme(); if (weblogTheme != null) { ThemeResource resource = weblogTheme.getResource(resourceRequest.getResourcePath()); if (resource != null) { resourceLastMod = resource.getLastModified(); resourceStream = resource.getInputStream(); } } } catch (Exception ex) { // hmmm, some kind of error getting theme. that's an error. response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); return; } } // if not from theme then see if resource is in weblog's upload dir if (resourceStream == null) { try { MediaFileManager mmgr = WebloggerFactory.getWeblogger().getMediaFileManager(); MediaFile mf = mmgr.getMediaFileByOriginalPath(weblog, resourceRequest.getResourcePath()); resourceLastMod = mf.getLastModified(); resourceStream = mf.getInputStream(); } catch (Exception ex) { // still not found? then we don't have it, 404. log.debug("Unable to get resource", ex); response.sendError(HttpServletResponse.SC_NOT_FOUND); return; } } // Respond with 304 Not Modified if it is not modified. if (ModDateHeaderUtil.respondIfNotModified(request, response, resourceLastMod)) { return; } else { // set last-modified date ModDateHeaderUtil.setLastModifiedHeader(response, resourceLastMod); } // set the content type based on whatever is in our web.xml mime defs response.setContentType(this.context.getMimeType(resourceRequest.getResourcePath())); OutputStream out = null; try { // ok, lets serve up the file byte[] buf = new byte[8192]; int length = 0; out = response.getOutputStream(); while ((length = resourceStream.read(buf)) > 0) { out.write(buf, 0, length); } // cleanup out.close(); resourceStream.close(); } catch (Exception ex) { log.error("Error writing resource file", ex); if (!response.isCommitted()) { response.reset(); response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); } } }