Example usage for javax.servlet.http HttpServletResponse reset

Introduction

In this page you can find the example usage for javax.servlet.http HttpServletResponse reset.

Prototype

public void reset();

Source Link

Document

Clears any data that exists in the buffer as well as the status code, headers.

Usage

From source file:fll.web.api.CategoryScheduleMappingServlet.java

@Override
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;
    try {/* w w  w.  j  a v  a2 s .c o m*/
        connection = datasource.getConnection();

        final ObjectMapper jsonMapper = new ObjectMapper();

        response.reset();
        response.setContentType("application/json");
        final PrintWriter writer = response.getWriter();

        final int currentTournament = Queries.getCurrentTournament(connection);

        final Collection<CategoryColumnMapping> mappings = CategoryColumnMapping.load(connection,
                currentTournament);

        jsonMapper.writeValue(writer, mappings);
    } catch (final SQLException e) {
        LOGGER.fatal("Database Exception", e);
        throw new RuntimeException(e);
    } finally {
        SQLFunctions.close(connection);
    }

}

---

From source file:fll.web.api.ScheduleServlet.java

@Override
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;
    try {//from w w w .  ja v a 2  s .  co m
        connection = datasource.getConnection();

        final ObjectMapper jsonMapper = new ObjectMapper();

        response.reset();
        response.setContentType("application/json");
        final PrintWriter writer = response.getWriter();

        final int currentTournament = Queries.getCurrentTournament(connection);
        if (TournamentSchedule.scheduleExistsInDatabase(connection, currentTournament)) {
            final TournamentSchedule schedule = new TournamentSchedule(connection, currentTournament);

            jsonMapper.writeValue(writer, schedule);
        } else {
            jsonMapper.writeValue(writer, "");
        }

    } catch (final SQLException e) {
        throw new RuntimeException(e);
    } finally {
        SQLFunctions.close(connection);
    }

}

---

From source file:com.node.action.UserAction.java

/**
 * //from  w ww  .  j  a  va 2  s  .c om
 * ??excel
 * 
 * @param request
 * @param response
 * @version: 1.0
 * @author: liuwu
 * @version: 201642 ?5:53:39
 */
@RequestMapping("/exportExcel")
public void exportExcel(HttpServletRequest request, HttpServletResponse response) {
    response.reset();
    try {
        request.setCharacterEncoding("UTF-8");
    } catch (UnsupportedEncodingException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    String hf = request.getParameter("hfs");
    String type = request.getParameter("type");
    String exportname = "grid";
    try {
        if (type.equals("excel")) {
            exportname += ".xls";
            response.setHeader("Content-disposition",
                    "attachment; filename=" + java.net.URLEncoder.encode(exportname, "UTF-8") + "");
            response.setContentType("application/msexcel;charset=utf-8");
        } else if (type.equals("word")) {
            exportname += ".doc";
            response.setHeader("Content-disposition",
                    "attachment; filename=" + java.net.URLEncoder.encode(exportname, "UTF-8") + "");
            response.setContentType("application/ms-word;charset=UTF-8");
        }
    } catch (UnsupportedEncodingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    PrintWriter out;
    try {
        out = response.getWriter();
        out.println(hf);
        out.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

---

From source file:org.fenixedu.academic.ui.struts.action.candidate.degree.DegreeCandidacyManagementDispatchAction.java

public ActionForward showSummaryFile(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
        HttpServletResponse response) {
    CandidacySummaryFile file = getCandidacy(request).getSummaryFile();

    response.reset();
    try {//from   w  w w  . jav a2 s .co  m
        response.getOutputStream().write(file.getContent());
        response.setContentLength(file.getContent().length);
        response.setContentType("application/pdf");
        response.flushBuffer();
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    }

    return null;
}

---

From source file:cn.orignzmn.shopkepper.common.utils.excel.ExportExcel.java

/**
 * /*from  www.  ja  v a2  s . co  m*/
 * @param fileName ??
 */
public ExportExcel write(HttpServletResponse response, String fileName) throws IOException {
    response.reset();
    response.setContentType("application/octet-stream; charset=utf-8");
    response.setHeader("Content-Disposition", "attachment; filename=" + Encodes.urlEncode(fileName));
    write(response.getOutputStream());
    return this;
}

---

From source file:com.delmar.core.web.filter.ExportDelegate.java

/**
 * Actually writes exported data. Extracts content from the Map stored in request with the
 * <code>TableTag.FILTER_CONTENT_OVERRIDE_BODY</code> key.
 * @param wrapper BufferedResponseWrapper implementation
 * @param response HttpServletResponse/* w  w w.  j  a v a2 s . c  o m*/
 * @param request ServletRequest
 * @throws java.io.IOException exception thrown by response writer/outputStream
 */
public static void writeExport(HttpServletResponse response, ServletRequest request,
        BufferedResponseWrapper wrapper) throws IOException {

    if (wrapper.isOutRequested()) {
        // data already written
        log.debug("Filter operating in unbuffered mode. Everything done, exiting");
        return;
    }

    // if you reach this point the PARAMETER_EXPORTING has been found, but the special header has never been set in
    // response (this is the signal from table tag that it is going to write exported data)
    log.debug("Filter operating in buffered mode. ");

    Map bean = (Map) request.getAttribute(TableTag.FILTER_CONTENT_OVERRIDE_BODY);

    if (log.isDebugEnabled()) {
        log.debug(bean);
    }

    Object pageContent = bean.get(TableTagParameters.BEAN_BODY);

    if (pageContent == null) {
        if (log.isDebugEnabled()) {
            log.debug("Filter is enabled but exported content has not been found. Maybe an error occurred?");
        }

        response.setContentType(wrapper.getContentType());
        PrintWriter out = response.getWriter();

        out.write(wrapper.getContentAsString());
        out.flush();
        return;
    }

    // clear headers
    if (!response.isCommitted()) {
        response.reset();
    }

    String filename = (String) bean.get(TableTagParameters.BEAN_FILENAME);
    String contentType = (String) bean.get(TableTagParameters.BEAN_CONTENTTYPE);

    if (StringUtils.isNotBlank(filename)) {
        response.setHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
    }

    String characterEncoding = wrapper.getCharacterEncoding();
    String wrappedContentType = wrapper.getContentType();

    if (wrappedContentType != null && wrappedContentType.indexOf("charset") > -1) {
        // charset is already specified (see #921811)
        characterEncoding = StringUtils.substringAfter(wrappedContentType, "charset=");
    }

    if (characterEncoding != null && contentType.indexOf("charset") == -1) //$NON-NLS-1$
    {
        contentType += "; charset=" + characterEncoding; //$NON-NLS-1$
    }

    response.setContentType(contentType);

    if (pageContent instanceof String) {
        // text content
        if (characterEncoding != null) {
            response.setContentLength(((String) pageContent).getBytes(characterEncoding).length);
        } else {
            //FIXME  Reliance on default encoding
            // Found a call to a method which will perform a byte to String (or String to byte) conversion,
            // and will assume that the default platform encoding is suitable.
            // This will cause the application behaviour to vary between platforms.
            // Use an alternative API and specify a charset name or Charset object explicitly.
            response.setContentLength(((String) pageContent).getBytes().length);
        }

        PrintWriter out = response.getWriter();
        out.write((String) pageContent);
        out.flush();
    } else {
        // dealing with binary content
        byte[] content = (byte[]) pageContent;
        response.setContentLength(content.length);
        OutputStream out = response.getOutputStream();
        out.write(content);
        out.flush();
    }
}

---

From source file:org.lazulite.boot.autoconfigure.core.utils.excel.ExportExcel.java

/**
 * //ww w.  j  a v  a 2 s .  c  o  m
 *
 * @param fileName ??
 */
public ExportExcel write(HttpServletResponse response, String fileName) throws IOException {
    response.reset();
    response.setContentType("application/octet-stream; charset=utf-8");
    response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(fileName, "UTF-8"));
    write(response.getOutputStream());
    return this;
}

---

From source file:fll.web.api.TournamentsServlet.java

@Override
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;
    try {// w  ww  . j av  a 2s.  c om
        connection = datasource.getConnection();

        final ObjectMapper jsonMapper = new ObjectMapper();

        response.reset();
        response.setContentType("application/json");
        final PrintWriter writer = response.getWriter();

        final String pathInfo = request.getPathInfo();
        if (null != pathInfo && pathInfo.length() > 1) {
            final String tournamentStr = pathInfo.substring(1);

            int id;
            if ("current".equals(tournamentStr)) {
                id = Queries.getCurrentTournament(connection);
            } else {
                try {
                    id = Integer.parseInt(tournamentStr);
                } catch (final NumberFormatException e) {
                    throw new RuntimeException("Error parsing tournament id " + tournamentStr, e);
                }
            }

            final Tournament tournament = Tournament.findTournamentByID(connection, id);
            if (null != tournament) {
                jsonMapper.writeValue(writer, tournament);
                return;
            } else {
                throw new RuntimeException("No tournament found with id " + id);
            }

        }

        final Collection<Tournament> tournaments = Tournament.getTournaments(connection);

        jsonMapper.writeValue(writer, tournaments);
    } catch (final SQLException e) {
        throw new RuntimeException(e);
    } finally {
        SQLFunctions.close(connection);
    }

}

---

From source file:com.feilong.controller.DownloadController.java

public void downloadLocal(HttpServletResponse response) throws FileNotFoundException {
    // //from w w  w.j  ava2 s. c  o m
    String fileName = "Operator.doc".toString(); // ???
    // ?
    InputStream inStream = new FileInputStream("c:/Operator.doc");// 
    // ?
    response.reset();
    response.setContentType("bin");
    response.addHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");
    // ???
    byte[] b = new byte[100];
    int len;
    try {
        while ((len = inStream.read(b)) > 0)
            response.getOutputStream().write(b, 0, len);
        inStream.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

---

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