Example usage for javax.servlet.http HttpServletResponse flushBuffer

List of usage examples for javax.servlet.http HttpServletResponse flushBuffer

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Introduction

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

Prototype

public void flushBuffer() throws IOException;

Source Link

Document

Forces any content in the buffer to be written to the client.

Usage

From source file:com.digitalizat.control.TdocController.java

@RequestMapping(value = "obtenerMiniatura")
public void obtenerMiniatura(@RequestParam(value = "codigo", required = true) String codigo,
        HttpServletResponse response) throws FileNotFoundException, IOException, Exception {
    Integer cod = null;/*from  w  ww  .j  a v a 2s .  c  o m*/
    try {
        cod = Integer.valueOf(codigo);
    } catch (Exception e) {

    }
    if (cod != null) {
        Document doc = tdocManager.getDocument(Integer.valueOf(codigo));
        String salida = ThumbnailCreator.createThumbnail(doc.getBasePath(), doc.getFileName());
        response.setContentType("image/png");
        response.setHeader("Content-Disposition", "attachment; filename=" + doc.getFileName() + ".png");
        InputStream is = new FileInputStream(salida);
        IOUtils.copy(is, response.getOutputStream());

        response.flushBuffer();
    }

}

From source file:org.kaaproject.kaa.sandbox.web.servlet.ProjectFileServlet.java

@Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    ProjectDataKey key = extractKey(request);
    if (key != null) {
        try {//from w  ww  . ja  v a  2s  .c  o m
            FileData fileData = cacheService.getProjectFile(key);
            if (fileData != null) {
                if (fileData.getContentType() != null) {
                    response.setContentType(fileData.getContentType());
                }
                ServletUtils.prepareDisposition(request, response, fileData.getFileName());
                response.setContentLength(fileData.getFileData().length);
                response.setBufferSize(BUFFER);
                response.getOutputStream().write(fileData.getFileData());
                response.flushBuffer();
            } else {
                logger.error("File data not found in cache for requested parameters: projectId [{}]  type [{}]",
                        key.getProjectId(), key.getProjectDataType());
            }
        } catch (Exception e) {
            logger.error("Unexpected error in ProjectFileServlet.doGet: ", e);
        }
    }
}

From source file:com.log4ic.compressor.utils.Compressor.java

/**
 * ??// ww  w .  j a  v a 2  s .  c o m
 *
 * @param code
 * @param type
 * @param response
 * @throws com.log4ic.compressor.exception.CompressionException
 *
 */
private static void writeOutCode(String code, FileType type, HttpServletResponse response)
        throws CompressionException {
    //mine type
    try {
        switch (type) {
        case JS:
            response.setContentType("text/javascript");
            break;
        case CSS:
        case GSS:
        case LESS:
        case MSS:
            response.setContentType("text/css");
            break;
        default:
            response.setContentType("text/html");
        }
        PrintWriter writer = response.getWriter();
        writer.write(code);
        writer.flush();
        response.flushBuffer();
    } catch (IOException e) {
        throw new CompressionException("Write code to client error.", e);
    }
}

From source file:com.motorola.motoask.gcm.RegisterServlet.java

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
    JSONObject jsonResp = new JSONObject();
    String regId, tbdId, email, os;

    try {/*from   ww w . j av a  2s . c  o m*/
        regId = getParameter(req, PARAMETER_REG_ID);
        tbdId = getParameter(req, PARAMETER_USER_ID);
        email = getParameter(req, PARAMETER_EMAIL);

        // boolean temp = EnumUtils.isValidEnum(Constants.DEVICE_OS.class, os);

        if (regId == null || tbdId == null || regId.length() == 0 || tbdId.length() == 0 || email == null
                || email.length() == 0) {
            setFail(resp);
            jsonResp.put("success", false);
            jsonResp.put("message", "bad or missing param");
            resp.getWriter().write(jsonResp.toString());
            resp.flushBuffer();
            return;
        }
        log.info("registering device for " + email);

        if (Datastore.register(tbdId, email, regId)) {
            setSuccess(resp);
            jsonResp.put("success", true);

        } else {
            setFail(resp);
            jsonResp.put("success", false);

        }
        resp.getWriter().write(jsonResp.toString());
        resp.flushBuffer();

    } catch (Exception e) {
        resp.setStatus(400);
        log.severe("fail to register device: " + e.toString());

    }

}

From source file:org.nuxeo.ecm.core.io.download.DownloadServiceImpl.java

protected void transferBlobWithByteRange(Blob blob, ByteRange byteRange, HttpServletResponse response)
        throws UncheckedIOException {
    transferBlobWithByteRange(blob, byteRange, () -> {
        try {/*  www  . jav a  2s.  c o m*/
            return response.getOutputStream();
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    });
    try {
        response.flushBuffer();
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}

From source file:com.emergya.persistenceGeo.web.RestResourcesController.java

/**
 * This method loads a resource from server
 * /* ww  w .j a va 2 s.  c o  m*/
 * @param resourceId
 * 
 * @return JSON file with resource
 */
@RequestMapping(value = "/persistenceGeo/getResource/{resourceId}", method = RequestMethod.GET, produces = {
        MediaType.APPLICATION_JSON_VALUE })
public void getResource(@PathVariable String resourceId, HttpServletResponse response) {
    try {
        Long accessId = Long.decode(resourceId.split("_")[0]);
        ResourceDto resource = loadFiles.get(accessId);
        if (resource == null) { // not loaded yet
            resource = resourceService.getByAccessId(accessId);
            loadFiles.put(accessId, resource);
        }
        response.setContentType(resource.getType());
        response.setHeader("Content-Length", new Long(resource.getSize()).toString());
        response.setHeader("Content-Disposition", "inline; filename=" + resource.getName());
        IOUtils.copy(new FileInputStream(resource.getData()), response.getOutputStream());
        response.flushBuffer();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:org.geoserver.backuprestore.rest.BackupController.java

@GetMapping(path = "backup/{backupId:.+}", produces = { MediaType.APPLICATION_JSON_VALUE,
        MediaType.TEXT_XML_VALUE, MediaType.APPLICATION_XML_VALUE, MediaType.ALL_VALUE })
public Object backupGet(@RequestParam(name = "format", required = false) String format,
        @PathVariable String backupId, HttpServletResponse response) {

    Object lookup = lookupBackupExecutionsContext(getExecutionIdFilter(backupId), true, false);

    if (lookup != null) {
        if (lookup instanceof BackupExecutionAdapter) {
            if (backupId.endsWith(".zip")) {
                try {
                    // get your file as InputStream
                    File file = ((BackupExecutionAdapter) lookup).getArchiveFile().file();
                    InputStream is = new FileInputStream(file);
                    // copy it to response's OutputStream
                    org.apache.commons.io.IOUtils.copy(is, response.getOutputStream());
                    response.flushBuffer();
                } catch (IOException ex) {
                    LOGGER.log(Level.INFO, "Error writing file to output stream.", ex);
                    throw new RuntimeException("IOError writing file to output stream");
                }//from www. java2s  .  c  om
            } else {
                return wrapObject((BackupExecutionAdapter) lookup, BackupExecutionAdapter.class);
            }
        } else {
            return wrapList((List<BackupExecutionAdapter>) lookup, BackupExecutionAdapter.class);
        }
    }

    return null;
}

From source file:org.geoserver.backuprestore.rest.RestoreController.java

@GetMapping(path = "restore/{restoreId:.+}", produces = { MediaType.APPLICATION_JSON_VALUE,
        MediaType.TEXT_XML_VALUE, MediaType.APPLICATION_XML_VALUE, MediaType.ALL_VALUE })
public Object restoreGet(@RequestParam(name = "format", required = false) String format,
        @PathVariable String restoreId, HttpServletResponse response) {

    Object lookup = lookupRestoreExecutionsContext(getExecutionIdFilter(restoreId), true, false);

    if (lookup != null) {
        if (lookup instanceof RestoreExecutionAdapter) {
            if (restoreId.endsWith(".zip")) {
                try {
                    // get your file as InputStream
                    File file = ((RestoreExecutionAdapter) lookup).getArchiveFile().file();
                    InputStream is = new FileInputStream(file);
                    // copy it to response's OutputStream
                    org.apache.commons.io.IOUtils.copy(is, response.getOutputStream());
                    response.flushBuffer();
                } catch (IOException ex) {
                    LOGGER.log(Level.INFO, "Error writing file to output stream.", ex);
                    throw new RuntimeException("IOError writing file to output stream");
                }/*  w  w  w .  j  a  v  a 2  s  . co m*/
            } else {
                return wrapObject((RestoreExecutionAdapter) lookup, RestoreExecutionAdapter.class);
            }
        } else {
            return wrapList((List<RestoreExecutionAdapter>) lookup, RestoreExecutionAdapter.class);
        }
    }

    return null;
}