Example usage for java.io PrintWriter flush

List of usage examples for java.io PrintWriter flush

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Introduction

In this page you can find the example usage for java.io PrintWriter flush.

Prototype

public void flush()

Source Link

Document

Flushes the stream.

Usage

From source file:com.amazon.alexa.avs.FileDataStore.java

public synchronized void writeToDisk(T payload, final ResultListener<T> listener) {
    sExecutor.execute(new Runnable() {
        @Override//w  w w .  j  a  v a2 s .  c  om
        public void run() {
            ObjectWriter writer = ObjectMapperFactory.getObjectWriter();
            PrintWriter out = null;
            try {
                out = new PrintWriter(file);
                out.print(writer.writeValueAsString(payload));
                out.flush();
                listener.onSuccess(payload);
            } catch (IOException e) {
                log.error("Failed to write to disk", e);
                listener.onFailure();
            } finally {
                IOUtils.closeQuietly(out);
            }
        }
    });
}

From source file:io.apiman.manager.test.server.MockGatewayServlet.java

/**
 * @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
 *///from w  ww .j a  va 2  s.co  m
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    builder.append("GET:").append(req.getRequestURI()).append("\n"); //$NON-NLS-1$ //$NON-NLS-2$
    payloads.add(null);
    if (req.getRequestURI().endsWith("/system/status")) { //$NON-NLS-1$
        resp.setStatus(200);
        resp.setContentType("application/json"); //$NON-NLS-1$
        PrintWriter printWriter = new PrintWriter(resp.getOutputStream());
        printWriter.println("{ \"up\" : true, \"version\" : \"1.0.Mock\" }"); //$NON-NLS-1$
        printWriter.flush();
        printWriter.close();
    } else {
        resp.setStatus(204);
    }
}

From source file:com.bitranger.parknshop.seller.controller.SellerPublishProductCtrl.java

@RequestMapping(value = "/seller/getTag", method = RequestMethod.GET)
public void getTags(HttpServletRequest request, HttpServletResponse response) throws IOException {

    // get the categoryId
    String categoryId = request.getParameter("id");

    List<PsTag> tags = tagDAO.selectTopTags(Integer.parseInt(categoryId.trim()), 20);

    JsonConfig jsonConfig = new JsonConfig();
    jsonConfig.setIgnoreDefaultExcludes(false);
    jsonConfig.setExcludes(new String[] { "psItems" });

    JSONArray jsonArray = JSONArray.fromObject(tags, jsonConfig);

    PrintWriter out = response.getWriter();

    out.write(jsonArray.toString());/*from  w w w .ja v a 2 s.  co m*/
    out.flush();
    out.close();

}

From source file:com.bstek.dorado.web.resolver.ErrorPageResolver.java

private void doExcecute(HttpServletRequest request, HttpServletResponse response)
        throws Exception, IOException {
    response.setContentType(HttpConstants.CONTENT_TYPE_HTML);
    response.setCharacterEncoding(Constants.DEFAULT_CHARSET);

    Context velocityContext = new VelocityContext();
    Exception e = (Exception) request.getAttribute(EXCEPTION_ATTRIBUTE);
    if (e != null) {
        logger.error(e, e);/* ww w. j  a va  2 s. c  o  m*/

        if (e instanceof PageNotFoundException) {
            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
        } else if (e instanceof PageAccessDeniedException) {
            response.setStatus(HttpServletResponse.SC_FORBIDDEN);
        }

        Throwable throwable = e;
        while (throwable.getCause() != null) {
            throwable = throwable.getCause();
        }

        String message = null;
        if (throwable != null) {
            message = throwable.getMessage();
        }
        message = StringUtils.defaultString(message, throwable.getClass().getName());

        velocityContext.put("message", message);
        velocityContext.put(EXCEPTION_ATTRIBUTE, throwable);
    } else {
        velocityContext.put("message", "Can not gain exception information!");
    }
    velocityContext.put("esc", stringEscapeHelper);

    Template template = getVelocityEngine().getTemplate("com/bstek/dorado/web/resolver/ErrorPage.html");

    PrintWriter writer = getWriter(request, response);
    try {
        template.merge(velocityContext, writer);
    } finally {
        writer.flush();
        writer.close();
    }
}

From source file:controller.UploadServlet.java

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    // checks if the request actually contains upload file
    if (!ServletFileUpload.isMultipartContent(request)) {
        // if not, we stop here
        PrintWriter writer = response.getWriter();
        writer.println("Error: Form must has enctype=multipart/form-data.");
        writer.flush();
        return;/* w  ww  . j  av a  2s . co m*/
    }
    // configures upload settings
    DiskFileItemFactory factory = new DiskFileItemFactory();
    // sets memory threshold - beyond which files are stored in disk 
    factory.setSizeThreshold(MEMORY_THRESHOLD);
    // sets temporary location to store files
    factory.setRepository(new File(System.getProperty("java.io.tmpdir")));

    ServletFileUpload upload = new ServletFileUpload(factory);

    // sets maximum size of upload file
    upload.setFileSizeMax(MAX_FILE_SIZE);

    // sets maximum size of request (include file + form data)
    upload.setSizeMax(MAX_REQUEST_SIZE);

    // constructs the directory path to store upload file
    // this path is relative to application's directory
    String uploadPath = getServletContext().getRealPath("") + File.separator + UPLOAD_DIRECTORY;

    // creates the directory if it does not exist
    File uploadDir = new File(uploadPath);
    if (!uploadDir.exists()) {
        uploadDir.mkdir();
    }

    try {

        List<FileItem> formItems = upload.parseRequest(request);

        if (formItems != null && formItems.size() > 0) {
            // iterates over form's fields
            for (FileItem item : formItems) {
                // processes only fields that are not form fields
                if (!item.isFormField()) {
                    String fileName = new File(item.getName()).getName();
                    String filePath = uploadPath + File.separator + fileName;
                    File storeFile = new File(filePath);

                    // saves the file on disk
                    item.write(storeFile);
                    request.setAttribute("msg", UPLOAD_DIRECTORY + "/" + fileName);
                    request.setAttribute("message",
                            "Upload has been done successfully >>" + UPLOAD_DIRECTORY + "/" + fileName);
                }
            }
        }
    } catch (Exception ex) {
        request.setAttribute("message", "There was an error: " + ex.getMessage());
    }
    // redirects client to message page
    getServletContext().getRequestDispatcher("/message.jsp").forward(request, response);
}

From source file:com.cws.esolutions.core.utils.NetworkUtils.java

/**
 * Creates an telnet connection to a target host and port number. Silently
 * succeeds if no issues are encountered, if so, exceptions are logged and
 * re-thrown back to the requestor.//from www .j  av a 2  s  .com
 *
 * If an exception is thrown during the <code>socket.close()</code> operation,
 * it is logged but NOT re-thrown. It's not re-thrown because it does not indicate
 * a connection failure (indeed, it means the connection succeeded) but it is
 * logged because continued failures to close the socket could result in target
 * system instability.
 * 
 * @param hostName - The target host to make the connection to
 * @param portNumber - The port number to attempt the connection on
 * @param timeout - The timeout for the connection
 * @throws UtilityException {@link com.cws.esolutions.core.utils.exception.UtilityException} if an error occurs processing
 */
public static final synchronized void executeTelnetRequest(final String hostName, final int portNumber,
        final int timeout) throws UtilityException {
    final String methodName = NetworkUtils.CNAME
            + "#executeTelnetRequest(final String hostName, final int portNumber, final int timeout) throws UtilityException";

    if (DEBUG) {
        DEBUGGER.debug(methodName);
        DEBUGGER.debug(hostName);
        DEBUGGER.debug("portNumber: {}", portNumber);
        DEBUGGER.debug("timeout: {}", timeout);
    }

    Socket socket = null;

    try {
        synchronized (new Object()) {
            if (InetAddress.getByName(hostName) == null) {
                throw new UnknownHostException("No host was found in DNS for the given name: " + hostName);
            }

            InetSocketAddress socketAddress = new InetSocketAddress(hostName, portNumber);

            socket = new Socket();
            socket.setSoTimeout((int) TimeUnit.SECONDS.toMillis(timeout));
            socket.setSoLinger(false, 0);
            socket.setKeepAlive(false);
            socket.connect(socketAddress, (int) TimeUnit.SECONDS.toMillis(timeout));

            if (!(socket.isConnected())) {
                throw new ConnectException("Failed to connect to host " + hostName + " on port " + portNumber);
            }

            PrintWriter pWriter = new PrintWriter(socket.getOutputStream(), true);

            pWriter.println(NetworkUtils.TERMINATE_TELNET + NetworkUtils.CRLF);

            pWriter.flush();
            pWriter.close();
        }
    } catch (ConnectException cx) {
        throw new UtilityException(cx.getMessage(), cx);
    } catch (UnknownHostException ux) {
        throw new UtilityException(ux.getMessage(), ux);
    } catch (SocketException sx) {
        throw new UtilityException(sx.getMessage(), sx);
    } catch (IOException iox) {
        throw new UtilityException(iox.getMessage(), iox);
    } finally {
        try {
            if ((socket != null) && (!(socket.isClosed()))) {
                socket.close();
            }
        } catch (IOException iox) {
            // log it - this could cause problems later on
            ERROR_RECORDER.error(iox.getMessage(), iox);
        }
    }
}

From source file:com.supernovapps.audio.jstreamsourcer.ShoutcastV1.java

private PrintWriter writeAuthentication() {
    PrintWriter output = new PrintWriter(out);
    output.println(password);/*w  ww.j  a va2  s. co m*/
    output.flush();
    return output;
}

From source file:com.ctb.prism.report.api.ReportPageStatusServlet.java

protected void pageUpdate(HttpServletRequest request, HttpServletResponse response,
        WebReportContext webReportContext) throws JRException, IOException {
    JasperPrintAccessor jasperPrintAccessor = (JasperPrintAccessor) webReportContext
            .getParameterValue(WebReportContext.REPORT_CONTEXT_PARAMETER_JASPER_PRINT_ACCESSOR);
    if (jasperPrintAccessor == null) {
        throw new JRRuntimeException("Did not find the report on the session.");
    }//w w w  . j  a  va 2s.  c om

    String pageIdxParam = request.getParameter(WebUtil.REQUEST_PARAMETER_PAGE);
    Integer pageIndex = pageIdxParam == null ? null : Integer.valueOf(pageIdxParam);
    String pageTimestampParam = request.getParameter(WebUtil.REQUEST_PARAMETER_PAGE_TIMESTAMP);
    Long pageTimestamp = pageTimestampParam == null ? null : Long.valueOf(pageTimestampParam);

    if (log.isDebugEnabled()) {
        log.debug("report page update check for pageIndex: " + pageIndex + ", pageTimestamp: " + pageTimestamp);
    }

    Map<String, Object> reportStatus = new LinkedHashMap<String, Object>();
    putReportStatusResult(response, jasperPrintAccessor, reportStatus);

    if (pageIndex != null && pageTimestamp != null) {
        ReportPageStatus pageStatus = jasperPrintAccessor.pageStatus(pageIndex, pageTimestamp);
        boolean modified = pageStatus.hasModified();
        reportStatus.put("pageModified", modified);
        reportStatus.put("pageFinal", pageStatus.isPageFinal());

        if (log.isDebugEnabled()) {
            log.debug("page " + pageIndex + " modified " + modified);
        }
    }

    Map<String, Object> result = new HashMap<String, Object>();
    result.put("result", reportStatus);

    String resultString = JacksonUtil.getInstance(getJasperReportsContext()).getJsonString(result);
    PrintWriter out = response.getWriter();
    out.write(resultString);
    out.flush();
}

From source file:LoginClient.java

public LoginClient() {
    try {/*from   w  w  w . j ava2  s  . c o m*/
        SSLSocketFactory socketFactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
        SSLSocket socket = (SSLSocket) socketFactory.createSocket("localhost", 7070);
        PrintWriter output = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
        String userName = "MyName";
        output.println(userName);
        String password = "MyPass";
        output.println(password);
        output.flush();
        BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
        String response = input.readLine();
        System.out.println(response);

        output.close();
        input.close();
        socket.close();
    } catch (IOException ioException) {
        ioException.printStackTrace();
    } finally {
        System.exit(0);
    }
}

From source file:bookUtilities.BookSearchServlet.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods./* ww  w.  j a  va2 s.  co m*/
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");
    JSONArray books = getSearchResults(request.getParameter("searchPhrase"));
    PrintWriter printout = response.getWriter();
    printout.print(books);
    printout.flush();
}