Example usage for javax.servlet.http HttpServletResponse setContentLength

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

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Introduction

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

Prototype

public void setContentLength(int len);

Source Link

Document

Sets the length of the content body in the response In HTTP servlets, this method sets the HTTP Content-Length header.

Usage

From source file:br.org.ipti.guigoh.util.DownloadService.java

public static synchronized void downloadFile(File file, String mimeType) {
    FacesContext facesContext = FacesContext.getCurrentInstance();
    ExternalContext context = facesContext.getExternalContext();
    HttpServletResponse response = (HttpServletResponse) context.getResponse();
    response.setHeader("Content-Disposition", "attachment;filename=\"" + file.getName() + "\"");
    response.setContentLength((int) file.length());
    response.setContentType(mimeType);/* w w w  .j a  v a 2  s  .c o m*/
    try {
        OutputStream out;
        try (FileInputStream in = new FileInputStream(file)) {
            out = response.getOutputStream();
            byte[] buf = new byte[(int) file.length()];
            int count;
            while ((count = in.read(buf)) >= 0) {
                out.write(buf, 0, count);
            }
        }
        out.flush();
        out.close();
        facesContext.responseComplete();
    } catch (IOException ex) {
        System.out.println("Error in downloadFile: " + ex.getMessage());
    }
}

From source file:org.openmrs.module.omodexport.util.OmodExportUtil.java

/**
 * Utility method for exporting a single module
 * /* w w w .j a v a2 s .  c  o  m*/
 * @param module -The module to export
 * @param response
 */
public static void exportSingleModule(Module module, HttpServletResponse response) {
    File file = module.getFile();
    response.setContentLength(new Long(file.length()).intValue());
    response.setContentType("application/zip");
    response.setHeader("Content-Disposition", "attachment; filename=\"" + file.getName() + "\"");
    try {
        FileCopyUtils.copy(new FileInputStream(file), response.getOutputStream());
    } catch (IOException e) {
        e.printStackTrace();
    }

}

From source file:com.eryansky.common.web.utils.DownloadUtils.java

/**
 * //from www .  j a v  a  2 s  .c  o m
 * @param request
 * @param response
 * @param inputStream ?
 * @param displayName ??
 * @throws IOException
 */
public static void download(HttpServletRequest request, HttpServletResponse response, InputStream inputStream,
        String displayName) throws IOException {
    response.reset();
    WebUtils.setNoCacheHeader(response);

    response.setContentType("application/x-download");
    response.setContentLength((int) inputStream.available());

    //        String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    //        displayFilename = displayFilename.replace(" ", "_");
    WebUtils.setDownloadableHeader(request, response, displayName);
    BufferedInputStream is = null;
    OutputStream os = null;
    try {

        os = response.getOutputStream();
        is = new BufferedInputStream(inputStream);
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

From source file:net.mindengine.oculus.frontend.web.controllers.display.FileDisplayController.java

public static void showFile(HttpServletResponse response, String path, String fileName, String contentType)
        throws IOException {
    File file = new File(path);
    response.setBufferSize((int) file.length());
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

    response.setContentType(contentType);
    response.setContentLength((int) file.length());

    byte[] bytes = new byte[(int) file.length()];
    FileInputStream fis = new FileInputStream(file);
    fis.read(bytes);//from ww  w. j  av  a 2  s. co m
    fis.close();

    FileCopyUtils.copy(bytes, response.getOutputStream());
}

From source file:jease.site.Streams.java

/**
 * Write given file to response.//from  ww w  .ja v a 2s.c  o m
 * 
 * If the given content type denotes a browser supported image, the image
 * will be automatically scaled if either "scale" is present as request
 * paramter or JEASE_IMAGE_LIMIT is set in Registry.
 */
public static void write(HttpServletRequest request, HttpServletResponse response, File file,
        String contentType) throws IOException {
    if (Images.isBrowserCompatible(contentType)) {
        int scale = NumberUtils.toInt(request.getParameter("scale"));
        if (scale > 0) {
            java.io.File scaledImage = Images.scale(file, scale);
            scaledImage.deleteOnExit();
            response.setContentType(contentType);
            response.setContentLength((int) scaledImage.length());
            Files.copy(scaledImage.toPath(), response.getOutputStream());
            return;
        }
        int limit = NumberUtils.toInt(Registry.getParameter(Names.JEASE_IMAGE_LIMIT));
        if (limit > 0) {
            java.io.File scaledImage = Images.limit(file, limit);
            scaledImage.deleteOnExit();
            response.setContentType(contentType);
            response.setContentLength((int) scaledImage.length());
            Files.copy(scaledImage.toPath(), response.getOutputStream());
            return;
        }

    }
    response.setContentType(contentType);
    response.setContentLength((int) file.length());
    Files.copy(file.toPath(), response.getOutputStream());
}

From source file:co.com.realtech.mariner.util.jsf.file.FileDownloader.java

/**
 * Descargar excel a travs del FacesContext.
 *
 * @param context//from  w ww .ja  v  a 2  s.c o m
 * @param bytes
 * @param nombreArchivo
 */
private static void descargarArchivo(FacesContext context, byte[] bytes, String nombreArchivo,
        String extension) {
    ExternalContext externalContext = context.getExternalContext();
    HttpServletResponse response = (HttpServletResponse) externalContext.getResponse();
    try {
        try (ServletOutputStream servletOutputStream = response.getOutputStream()) {
            response.addHeader("Content-Type", "application/" + extension);
            response.addHeader("Content-Disposition",
                    "attachment; filename=" + nombreArchivo + "." + extension);
            response.setContentLength(bytes.length);
            response.setContentType("application/" + extension);
            servletOutputStream.write(bytes);
            servletOutputStream.flush();
            context.responseComplete();
        }
    } catch (Exception e) {
        System.out.println("Error enviando reporte al cliente, error causado por " + e);
    }
}

From source file:com.lushapp.common.web.utils.DownloadUtils.java

public static void download(HttpServletRequest request, HttpServletResponse response, String displayName,
        byte[] bytes) throws IOException {

    if (ArrayUtils.isEmpty(bytes)) {
        response.setContentType("text/html;charset=utf-8");
        response.setCharacterEncoding("utf-8");
        response.getWriter().write("??");
        return;/* ww w  .  j a  va2 s .  c  o  m*/
    }

    response.reset();
    WebUtils.setNoCacheHeader(response);

    response.setContentType("application/x-download");
    response.setContentLength((int) bytes.length);

    String displayFilename = displayName.substring(displayName.lastIndexOf("_") + 1);
    displayFilename = displayFilename.replace(" ", "_");
    WebUtils.setDownloadableHeader(request, response, displayFilename);
    BufferedInputStream is = null;
    OutputStream os = null;
    try {

        os = response.getOutputStream();
        is = new BufferedInputStream(new ByteArrayInputStream(bytes));
        IOUtils.copy(is, os);
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(is);
    }
}

From source file:com.ibm.jaggr.core.test.TestUtils.java

public static HttpServletResponse createMockResponse(final Map<String, String> responseAttributes) {
    HttpServletResponse mockResponse = EasyMock.createNiceMock(HttpServletResponse.class);
    mockResponse.setContentLength(EasyMock.anyInt());
    EasyMock.expectLastCall().andAnswer(new IAnswer<Object>() {
        public Object answer() throws Throwable {
            if (responseAttributes != null) {
                responseAttributes.put("Content-Length",
                        ((Integer) EasyMock.getCurrentArguments()[0]).toString());
            }/*from www  .  ja  v a  2  s .  c  o  m*/
            return null;
        }
    }).anyTimes();
    mockResponse.setStatus(EasyMock.anyInt());
    EasyMock.expectLastCall().andAnswer(new IAnswer<Object>() {
        public Object answer() throws Throwable {
            if (responseAttributes != null) {
                responseAttributes.put("Status", ((Integer) EasyMock.getCurrentArguments()[0]).toString());
            }
            return null;
        }
    }).anyTimes();
    EasyMock.expect(mockResponse.getStatus()).andAnswer(new IAnswer<Integer>() {
        @Override
        public Integer answer() throws Throwable {
            int result = 0;
            if (responseAttributes != null) {
                result = Integer.parseInt(responseAttributes.get("Status"));
            }
            return result;
        }
    }).anyTimes();

    return mockResponse;
}

From source file:ee.ria.xroad.common.request.DummyCentralServiceHandler.java

private static void sendErrorResponse(HttpServletResponse response, String faultCode, String faultString,
        String faultActor, String faultDetail) throws IOException {
    String soapMessageXml = SoapFault.createFaultXml(faultCode, faultString, faultActor, faultDetail);

    String encoding = StandardCharsets.UTF_8.name();
    byte[] messageBytes = soapMessageXml.getBytes(encoding);

    response.setStatus(HttpServletResponse.SC_OK);
    response.setContentType(MimeTypes.TEXT_XML);
    response.setContentLength(messageBytes.length);
    response.setHeader("SOAPAction", "");
    response.setCharacterEncoding(encoding);
    response.getOutputStream().write(messageBytes);
}

From source file:ch.ralscha.extdirectspring.util.ExtDirectSpringUtil.java

/**
 * Checks etag and sends back HTTP status 304 if not modified. If modified sets
 * content type and content length, adds cache headers (
 * {@link #addCacheHeaders(HttpServletResponse, String, Integer)}), writes the data
 * into the {@link HttpServletResponse#getOutputStream()} and flushes it.
 *
 * @param request the HTTP servlet request
 * @param response the HTTP servlet response
 * @param data the response data//from  w w  w.  ja v a  2s . c o  m
 * @param contentType the content type of the data (i.e.
 * "application/javascript;charset=UTF-8")
 * @throws IOException
 */
public static void handleCacheableResponse(HttpServletRequest request, HttpServletResponse response,
        byte[] data, String contentType) throws IOException {
    String ifNoneMatch = request.getHeader("If-None-Match");
    String etag = "\"0" + DigestUtils.md5DigestAsHex(data) + "\"";

    if (etag.equals(ifNoneMatch)) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;
    }

    response.setContentType(contentType);
    response.setContentLength(data.length);

    addCacheHeaders(response, etag, 6);

    @SuppressWarnings("resource")
    ServletOutputStream out = response.getOutputStream();
    out.write(data);
    out.flush();
}