Example usage for javax.servlet ServletOutputStream write

List of usage examples for javax.servlet ServletOutputStream write

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Introduction

In this page you can find the example usage for javax.servlet ServletOutputStream write.

Prototype

public void write(byte b[], int off, int len) throws IOException

Source Link

Document

Writes len bytes from the specified byte array starting at offset off to this output stream.

Usage

From source file:org.oscarehr.admin.traceability.GenerateTraceabilityUtil.java

public static void download(HttpServletResponse response, String fileName, String contentType)
        throws Exception {
    response.setContentType(contentType);
    response.setHeader("Content-Disposition", "attachment;filename=" + fileName);
    FileInputStream in = new FileInputStream(fileName);
    ServletOutputStream out = response.getOutputStream();
    long buf_size = new File(fileName).length();
    byte[] outputByte = new byte[(int) buf_size];
    while (in.read(outputByte) != -1) {
        out.write(outputByte, 0, (int) buf_size);
    }/*from  www .  j  a  v a2  s. c o m*/
    in.close();
    out.flush();
    out.close();
}

From source file:com.concursive.connect.web.modules.documents.beans.FileDownload.java

/**
 * Description of the Method//from   w ww.j  a va 2  s  .c  om
 *
 * @param context     Description of the Parameter
 * @param bytes       Description of the Parameter
 * @param contentType Description of the Parameter
 * @throws Exception Description of the Exception
 */
public static void streamFile(ActionContext context, byte[] bytes, String contentType) throws Exception {
    context.getResponse().setContentType(contentType);
    ServletOutputStream outputStream = context.getResponse().getOutputStream();
    outputStream.write(bytes, 0, bytes.length);
    outputStream.flush();
    outputStream.close();
}

From source file:org.wso2.carbon.hdfs.mgt.ui.GetHDFSItemContentProcessor.java

public static void getContent(HttpServletRequest request, HttpServletResponse response, ServletConfig config)
        throws Exception {

    try {//from   w  ww  .j a va 2 s .co m
        HDFSFileOperationAdminClient client = new HDFSFileOperationAdminClient(config.getServletContext(),
                request.getSession());
        String path = request.getParameter("path");
        if (path == null) {
            String msg = "Could not get the resource content. Path is not specified.";
            log.error(msg);
            response.setStatus(400);
            return;
        }

        HDFSFileContent fileContent = client.downloadFile(path);
        String fileName = path.substring(path.lastIndexOf("/") + 1, path.length());

        InputStream contentStream = null;
        if (fileContent.getDataHandler() != null) {
            contentStream = fileContent.getDataHandler().getInputStream();
        } else {
            String msg = "The resource content was empty.";
            log.error(msg);
            response.setStatus(204);
            return;
        }

        response.setContentType("application/download");
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

        if (contentStream != null) {

            ServletOutputStream servletOutputStream = null;
            try {
                servletOutputStream = response.getOutputStream();

                byte[] contentChunk = new byte[1024];
                int byteCount;
                while ((byteCount = contentStream.read(contentChunk)) != -1) {
                    servletOutputStream.write(contentChunk, 0, byteCount);
                }

                response.flushBuffer();
                servletOutputStream.flush();

            } finally {
                contentStream.close();

                if (servletOutputStream != null) {
                    servletOutputStream.close();
                }
            }
        }
    } catch (HdfsMgtUiComponentException ex) {
        String msg = "Failed to get resource content. " + ex.getMessage();
        log.error(msg, ex);
        response.setStatus(500);
        return;

    } catch (RegistryException e) {
        String msg = "Failed to get resource content. " + e.getMessage();
        log.error(msg, e);
        response.setStatus(500);
        return;
    }
}

From source file:org.wso2.carbon.registry.resource.ui.utils.GetResourceContentProcessor.java

public static void getContent(HttpServletRequest request, HttpServletResponse response, ServletConfig config)
        throws Exception {

    try {//from w  w w  . j av a 2  s. c o m
        ResourceServiceClient client = new ResourceServiceClient(config, request.getSession());
        String path = request.getParameter("path");
        if (path == null) {
            String msg = "Could not get the resource content. Path is not specified.";
            log.error(msg);
            response.setStatus(400);
            return;
        }

        ContentDownloadBean bean = client.getContentDownloadBean(path);

        InputStream contentStream = null;
        if (bean.getContent() != null) {
            contentStream = bean.getContent().getInputStream();
        } else {
            String msg = "The resource content was empty.";
            log.error(msg);
            response.setStatus(204);
            return;
        }

        response.setDateHeader("Last-Modified", bean.getLastUpdatedTime().getTime().getTime());

        if (bean.getMediatype() != null && bean.getMediatype().length() > 0) {
            response.setContentType(bean.getMediatype());
        } else {
            response.setContentType("application/download");
        }

        if (bean.getResourceName() != null) {
            response.setHeader("Content-Disposition",
                    "attachment; filename=\"" + bean.getResourceName() + "\"");
        }

        if (contentStream != null) {

            ServletOutputStream servletOutputStream = null;
            try {
                servletOutputStream = response.getOutputStream();

                byte[] contentChunk = new byte[1024];
                int byteCount;
                while ((byteCount = contentStream.read(contentChunk)) != -1) {
                    servletOutputStream.write(contentChunk, 0, byteCount);
                }

                response.flushBuffer();
                servletOutputStream.flush();

            } finally {
                contentStream.close();

                if (servletOutputStream != null) {
                    servletOutputStream.close();
                }
            }
        }

    } catch (RegistryException e) {
        String msg = "Failed to get resource content. " + e.getMessage();
        log.error(msg, e);
        response.setStatus(500);
        return;
    }
}

From source file:org.wso2.carbon.registry.resource.ui.utils.GetResourceContentProcessor.java

public static void getContentWithDependencies(HttpServletRequest request, HttpServletResponse response,
        ServletConfig config) throws Exception {

    try {/*from   w  ww  .  j a va 2 s .c o  m*/
        String path = request.getParameter("path");
        if (path == null) {
            String msg = "Could not get the resource content. Path is not specified.";
            log.error(msg);
            response.setStatus(400);
            return;
        }

        ResourceServiceClient client = new ResourceServiceClient(config, request.getSession());
        ContentDownloadBean bean = client.getContentDownloadBean(path);
        String downloadName = bean.getResourceName() + ".zip";

        response.setDateHeader("Last-Modified", bean.getLastUpdatedTime().getTime().getTime());
        InputStream zipContentStream = null;

        ContentDownloadBean zipContentBean = client.getZipWithDependencies(path);
        if (zipContentBean == null || (zipContentBean != null && zipContentBean.getContent() == null)) {
            String msg = "Error occurred while streaming the resource with its dependencies : path =" + path;
            log.error(msg);
            response.setStatus(204);
            return;
        }

        zipContentStream = zipContentBean.getContent().getInputStream();

        if (zipContentStream == null) {
            String msg = "Error occurred while streaming the resource with its dependencies : path =" + path;
            log.error(msg);
            response.setStatus(204);
            return;
        }

        if (bean.getMediatype() != null && bean.getMediatype().length() > 0) {
            response.setContentType(bean.getMediatype());
        } else {
            response.setContentType("application/download");
        }

        if (bean.getResourceName() != null) {
            response.setHeader("Content-Disposition", "attachment; filename=\"" + downloadName + "\"");
        }

        if (zipContentStream != null) {

            ServletOutputStream servletOutputStream = null;
            try {
                servletOutputStream = response.getOutputStream();

                byte[] contentChunk = new byte[1024];
                int byteCount;
                while ((byteCount = zipContentStream.read(contentChunk)) != -1) {
                    servletOutputStream.write(contentChunk, 0, byteCount);
                }

                response.flushBuffer();
                servletOutputStream.flush();

            } finally {
                zipContentStream.close();

                if (servletOutputStream != null) {
                    servletOutputStream.close();
                }
            }
        }

    } catch (Exception e) {
        String msg = "Failed to get resource content. " + e.getMessage();
        log.error(msg, e);
        response.setStatus(500);
        return;
    }
}

From source file:com.jsmartframework.web.manager.WebContext.java

/**
 * Write response as file stream when you want to provide download functionality.
 * Note that by using this method the response as HTML will not be generated and
 * the response will be what you have defined.
 *
 * @param file - File to be written on response.
 * @param bufferSize - Buffer size to write the response. Example 2048 bytes.
 * @throws IOException/*w  w w.j  ava2 s.c  o m*/
 */
public static void writeResponseAsFileStream(File file, int bufferSize) throws IOException {
    WebContext context = getCurrentInstance();
    if (context != null && file != null && bufferSize > 0) {
        context.responseWritten = true;
        context.response.setHeader("Content-Disposition", "attachment;filename=\"" + file.getName() + "\"");
        context.response.addHeader("Content-Length", Long.toString(file.length()));
        context.response.setContentLength((int) file.length());

        String mimetype = getApplication().getMimeType(file.getName());
        context.response.setContentType((mimetype != null) ? mimetype : "application/octet-stream");

        FileInputStream fileInputStream = new FileInputStream(file);
        ServletOutputStream outputStream = context.response.getOutputStream();

        try {
            int i;
            byte[] buffer = new byte[bufferSize];
            while ((i = fileInputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, i);
            }
        } finally {
            outputStream.flush();
            fileInputStream.close();
        }
    }
}

From source file:isl.FIMS.utils.Utils.java

public static void downloadZip(ServletOutputStream outStream, File file) {
    DataInputStream in = null;/* w  ww . j  a v a 2 s.  co m*/
    int BUFSIZE = 8192;

    try {
        byte[] byteBuffer = new byte[BUFSIZE];
        in = new DataInputStream(new FileInputStream(file));
        int bytesRead;
        while ((bytesRead = in.read(byteBuffer)) != -1) {
            outStream.write(byteBuffer, 0, bytesRead);
        }
        in.close();
        outStream.close();
    } catch (IOException ex) {
    } finally {
        try {
            in.close();
        } catch (IOException ex) {
        }
    }
}

From source file:com.rplt.studioMusik.controller.OwnerController.java

@RequestMapping(value = "/lihatlaporan")
public String lihatLaporan(ModelMap model, HttpServletResponse response) {
    String tanggalAwal = request.getParameter("tanggalAwal").toUpperCase();
    String tanggalAkhir = request.getParameter("tanggalAkhir").toUpperCase();

    //        List<PersewaanStudioMusik> dataListByMonth = persewaanStudioMusik.getDataListByMonth(tanggalAwal, tanggalAkhir);
    //        /*from  w w w. j a v a2 s .c  o  m*/
    //        model.addAttribute("bulan", tanggalAwal);
    //        model.addAttribute("tahun", tanggalAkhir);
    //        model.addAttribute("dataListByMonth", dataListByMonth);

    Connection conn = DatabaseConnection.getmConnection();
    //            File reportFile = new File(application.getRealPath("Coba.jasper"));//your report_name.jasper file
    File reportFile = new File(
            servletConfig.getServletContext().getRealPath("/resources/report/laporan_pemasukan.jasper"));

    Map parameters = new HashMap();
    Map<String, Object> params = new HashMap<String, Object>();
    params.put("TANGGAL_AWAL", tanggalAwal);
    params.put("TANGGAL_AKHIR", tanggalAkhir);
    byte[] bytes = null;
    try {
        bytes = JasperRunManager.runReportToPdf(reportFile.getPath(), params, conn);
    } catch (JRException ex) {
        Logger.getLogger(OperatorController.class.getName()).log(Level.SEVERE, null, ex);
    }

    response.setContentType("application/pdf");
    response.setContentLength(bytes.length);

    try {
        ServletOutputStream outStream = response.getOutputStream();
        outStream.write(bytes, 0, bytes.length);
        outStream.flush();
        outStream.close();
    } catch (IOException ex) {
        Logger.getLogger(OperatorController.class.getName()).log(Level.SEVERE, null, ex);
    }

    return "halaman-cetakReport-owner";
}

From source file:org.efs.openreports.dispatcher.FileDispatcher.java

protected void service(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    String fileName = "";

    try {//from w w  w .  ja  v  a 2s  .  c o m
        fileName = StringUtils.substringAfterLast(request.getRequestURI(), "/");

        File file = new File(imageDirectory + fileName);
        if (!file.exists()) {
            file = new File(imageTempDirectory + fileName);
        }
        if (!file.exists()) {
            fileName = request.getParameter("fileName");

            // report file delivery validates the filename against the username 
            // of the user in session for security purposes.
            ReportUser user = (ReportUser) request.getSession().getAttribute(ORStatics.REPORT_USER);
            if (user == null || fileName.indexOf(user.getName()) < 0) {
                String message = "Not Authorized...";
                response.getOutputStream().write(message.getBytes());

                return;
            }

            file = new File(reportGenerationDirectory + fileName);
        }

        byte[] fileDate = FileUtils.readFileToByteArray(file);

        response.setContentLength(fileDate.length);
        ServletOutputStream ouputStream = response.getOutputStream();

        ouputStream.write(fileDate, 0, fileDate.length);
        ouputStream.flush();
        ouputStream.close();
    } catch (Exception e) {
        log.warn(e);

        String message = "Error Loading File...";
        response.getOutputStream().write(message.getBytes());
    }
}

From source file:org.efs.openreports.actions.ReportViewerAction.java

public String execute() {
    JasperPrint jasperPrint = (JasperPrint) ActionContext.getContext().getSession().get(ORStatics.JASPERPRINT);

    report = (Report) ActionContext.getContext().getSession().get(ORStatics.REPORT);

    if (jasperPrint != null && jasperPrint.getPages() != null) {
        pageCount = jasperPrint.getPages().size();
    }//  www  .j a  v a  2s .c o m

    if (!"image".equals(submitType))
        return SUCCESS;

    byte[] imageData = null;

    if (jasperPrint != null) {
        try {
            BufferedImage image = (BufferedImage) JasperPrintManager.printPageToImage(jasperPrint,
                    pageIndex - 1, zoom);
            imageData = new SunPNGEncoderAdapter().encode(image);
        } catch (Exception e) {
            addActionError(e.getMessage());
            log.error(e.toString());
        }
    }

    if (imageData != null) {

        HttpServletResponse response = ServletActionContext.getResponse();

        try {
            response.setContentLength(imageData.length);
            ServletOutputStream ouputStream = response.getOutputStream();
            ouputStream.write(imageData, 0, imageData.length);
            ouputStream.flush();
            ouputStream.close();
        } catch (IOException ioe) {
            log.warn(ioe.toString());
        }
    }

    return NONE;
}