Example usage for javax.servlet ServletContext getMimeType

Introduction

In this page you can find the example usage for javax.servlet ServletContext getMimeType.

Prototype

public String getMimeType(String file);

Source Link

Document

Returns the MIME type of the specified file, or null if the MIME type is not known.

Usage

From source file:com.arcadian.loginservlet.CourseContentServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    if (request.getParameter("filename") != null) {
        String fileName = request.getParameter("filename");
        File file = new File(request.getServletContext().getAttribute("FILES_DIR") + File.separator + fileName);
        System.out.println("File location on server::" + file.getAbsolutePath());
        ServletContext ctx = getServletContext();
        InputStream fis = new FileInputStream(file);
        String mimeType = ctx.getMimeType(file.getAbsolutePath());
        System.out.println("mime type=" + mimeType);
        response.setContentType(mimeType != null ? mimeType : "application/octet-stream");
        response.setContentLength((int) file.length());
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

        ServletOutputStream os = response.getOutputStream();
        byte[] bufferData = new byte[102400];
        int read = 0;
        while ((read = fis.read(bufferData)) != -1) {
            os.write(bufferData, 0, read);
        }/*from ww  w  .j a  v  a  2 s .  com*/
        os.flush();
        os.close();
        fis.close();
        System.out.println("File downloaded at client successfully");
    }
    processRequest(request, response);
}

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From source file:com.arcadian.loginservlet.StudentAssignmentServlet.java

/**
 * Handles the HTTP//from ww w .  ja v  a 2 s  . c  om
 * <code>GET</code> method.
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    if (request.getParameter("filename") != null) {
        String fileName = request.getParameter("filename");
        File file = new File(request.getServletContext().getAttribute("FILES_DIR") + File.separator + fileName);
        System.out.println("File location on server::" + file.getAbsolutePath());
        ServletContext ctx = getServletContext();
        InputStream fis = new FileInputStream(file);
        String mimeType = ctx.getMimeType(file.getAbsolutePath());
        System.out.println("mime type=" + mimeType);
        response.setContentType(mimeType != null ? mimeType : "application/octet-stream");
        response.setContentLength((int) file.length());
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

        ServletOutputStream os = response.getOutputStream();
        byte[] bufferData = new byte[102400];
        int read = 0;
        while ((read = fis.read(bufferData)) != -1) {
            os.write(bufferData, 0, read);
        }
        os.flush();
        os.close();
        fis.close();
        System.out.println("File downloaded at client successfully");
    }
    processRequest(request, response);
}

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From source file:UploadDownloadFile.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    processRequest(request, response);//w w  w .  j a  v  a  2s . c  o m
    System.out.println("--> doGet -->");
    String filePath;

    String fileName = request.getParameter("fileName");
    if (fileName == null || fileName.equals("")) {
        throw new ServletException("File Name can't be null or empty");
    }
    final String clientip = request.getRemoteAddr().replace(":", "_");
    filePath = "/Users/" + currentuser + "/GlassFish_Server/glassfish/domains/domain1/tmpfiles/Uploaded/"
            + clientip + "/";
    File file = new File(filePath + File.separator + fileName);

    System.out.println("download file = " + file);
    if (!file.exists()) {
        throw new ServletException("File doesn't exists on server.");
    }
    System.out.println("File location on server::" + file.getAbsolutePath());
    ServletContext ctx = getServletContext();
    InputStream fis = new FileInputStream(file);
    String mimeType = ctx.getMimeType(file.getAbsolutePath());
    response.setContentType(mimeType != null ? mimeType : "application/octet-stream");
    response.setContentLength((int) file.length());
    response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

    ServletOutputStream os = response.getOutputStream();
    byte[] bufferData = new byte[1024];
    int read = 0;
    while ((read = fis.read(bufferData)) != -1) {
        os.write(bufferData, 0, read);
    }
    os.flush();
    os.close();
    fis.close();
    System.out.println("File downloaded at client successfully");
}

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From source file:com.arcadian.loginservlet.LecturesServlet.java

/**
 * Handles the HTTP//from  w  w w  .  ja  v  a  2  s  . co  m
 * <code>GET</code> method.
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    if (request.getParameter("filename") != null) {
        String fileName = request.getParameter("filename");
        File file = new File(request.getServletContext().getAttribute("FILES_DIR") + File.separator + fileName);
        System.out.println("File location on server::" + file.getAbsolutePath());
        ServletContext ctx = getServletContext();
        InputStream fis = new FileInputStream(file);
        String mimeType = ctx.getMimeType(file.getAbsolutePath());
        System.out.println("mime type=" + mimeType);
        response.setContentType(mimeType != null ? mimeType : "application/octet-stream");
        response.setContentLength((int) file.length());
        response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");

        ServletOutputStream os = response.getOutputStream();
        byte[] bufferData = new byte[102400];
        int read = 0;
        while ((read = fis.read(bufferData)) != -1) {
            os.write(bufferData, 0, read);
        }
        os.flush();
        os.close();
        fis.close();
        System.out.println("File downloaded at client successfully");
    }

    processRequest(request, response);
}

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From source file:de.yaio.services.webshot.server.controller.WebshotProvider.java

public void downloadResultFile(HttpServletRequest request, HttpServletResponse response, File downloadFile)
        throws IOException {
    // construct the complete absolute path of the file
    FileInputStream inputStream = new FileInputStream(downloadFile);

    // get MIME type of the file
    ServletContext context = request.getServletContext();
    String mimeType = context.getMimeType(downloadFile.getAbsolutePath());

    if (mimeType == null) {
        // set to binary type if MIME mapping not found
        mimeType = "application/octet-stream";
    }/*  www.  j  ava2s. c om*/
    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug("MIME type: " + mimeType);
    }

    // set content attributes for the response
    response.setContentType(mimeType);
    response.setContentLength((int) downloadFile.length());

    // set headers for the response
    String headerKey = "Content-Disposition";
    String headerValue = String.format("attachment; filename=\"%s\"", downloadFile.getName());
    response.setHeader(headerKey, headerValue);

    // get output stream of the response
    OutputStream outStream = response.getOutputStream();

    byte[] buffer = new byte[BUFFER_SIZE];
    int bytesRead = -1;

    // write bytes read from the input stream into the output stream
    while ((bytesRead = inputStream.read(buffer)) != -1) {
        outStream.write(buffer, 0, bytesRead);
    }

    inputStream.close();
    outStream.close();
}

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From source file:edu.csudh.goTorosBank.WithdrawServlet.java

@Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    //File blueCheck = new File("blank-blue-check.jpg");
    File blueCheck = new File(request.getParameter("filename"));
    String pathToWeb = getServletContext().getRealPath("/" + blueCheck);

    ServletContext cntx = request.getServletContext();
    String mime = cntx.getMimeType(pathToWeb);

    response.setContentType(mime);//w  w  w  . java2 s .co m
    try {
        File file = new File(pathToWeb);
        response.setContentLength((int) file.length());

        FileInputStream in = new FileInputStream(file);
        OutputStream out = response.getOutputStream();

        // Copy the contents of the file to the output stream
        byte[] buf = new byte[1024];
        int count;
        while ((count = in.read(buf)) >= 0) {
            out.write(buf, 0, count);
        }
        out.close();
        in.close();

        response.setHeader("Content-Transfer-Encoding", "binary");
        response.setHeader("Content-Disposition", "attachment; filename=\"" + blueCheck.getName() + "\"");//fileName;
    } catch (Exception e) {
        response.getWriter().write(e.getMessage());
    }

}

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From source file:wicket.protocol.http.request.WebExternalResourceRequestTarget.java

/**
 * Respond by trying to delegate getting the resource from the
 * {@link ServletContext} object and stream that to the client. If such a
 * resource is not found, a warning will be logged, and a 404 will be
 * issued.//from   www.java 2 s. com
 * 
 * @see wicket.IRequestTarget#respond(wicket.RequestCycle)
 */
public void respond(RequestCycle requestCycle) {
    try {
        WebResponse webResponse = ((WebRequestCycle) requestCycle).getWebResponse();
        final ServletContext context = ((WebApplication) requestCycle.getApplication()).getServletContext();

        // Set content type
        webResponse.setContentType(context.getMimeType(url));
        final InputStream in = context.getResourceAsStream(url);
        if (in != null) {
            try {
                // Copy resource input stream to servlet output stream
                Streams.copy(in, webResponse.getHttpServletResponse().getOutputStream());
            } finally {
                // NOTE: We only close the InputStream. The servlet
                // container should close the output stream.
                in.close();
            }
        } else {
            log.warn("the resource requested by request " + requestCycle.getRequest() + " was not found");
            HttpServletResponse httpServletResponse = webResponse.getHttpServletResponse();
            httpServletResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
        }
    } catch (IOException e) {
        throw new WicketRuntimeException("Cannot load static content for request " + requestCycle.getRequest(),
                e);
    }
}

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From source file:com.francelabs.datafari.servlets.URL.java

/**
 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
 *      response)//from   w  ww.  ja  va 2  s .  c om
 */
@Override
protected void doGet(final HttpServletRequest request, final HttpServletResponse response)
        throws ServletException, IOException {

    request.setCharacterEncoding("UTF-8");

    final String protocol = request.getScheme() + ":";

    final Map<String, String[]> requestMap = new HashMap<>();
    requestMap.putAll(request.getParameterMap());
    final IndexerQuery query = IndexerServerManager.createQuery();
    query.addParams(requestMap);
    // get the AD domain
    String domain = "";
    HashMap<String, String> h;
    try {
        h = RealmLdapConfiguration.getConfig(request);

        if (h.get(RealmLdapConfiguration.ATTR_CONNECTION_NAME) != null) {
            final String userBase = h.get(RealmLdapConfiguration.ATTR_DOMAIN_NAME).toLowerCase();
            final String[] parts = userBase.split(",");
            domain = "";
            for (int i = 0; i < parts.length; i++) {
                if (parts[i].indexOf("dc=") != -1) { // Check if the current
                    // part is a domain
                    // component
                    if (!domain.isEmpty()) {
                        domain += ".";
                    }
                    domain += parts[i].substring(parts[i].indexOf('=') + 1);
                }
            }
        }

        // Add authentication
        if (request.getUserPrincipal() != null) {
            String AuthenticatedUserName = request.getUserPrincipal().getName().replaceAll("[^\\\\]*\\\\", "");
            if (AuthenticatedUserName.contains("@")) {
                AuthenticatedUserName = AuthenticatedUserName.substring(0, AuthenticatedUserName.indexOf("@"));
            }
            if (!domain.equals("")) {
                AuthenticatedUserName += "@" + domain;
            }
            query.setParam("AuthenticatedUserName", AuthenticatedUserName);
        }
    } catch (final Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    StatsPusher.pushDocument(query, protocol);

    // String surl = URLDecoder.decode(request.getParameter("url"),
    // "ISO-8859-1");
    final String surl = request.getParameter("url");

    if (ScriptConfiguration.getProperty("ALLOWLOCALFILEREADING").equals("true")
            && !surl.startsWith("file://///")) {

        final int BUFSIZE = 4096;
        String fileName = null;

        /**
         * File Display/Download --> <!-- Written by Rick Garcia -->
         */
        if (SystemUtils.IS_OS_LINUX) {
            // try to open the file locally
            final String fileNameA[] = surl.split(":");
            fileName = URLDecoder.decode(fileNameA[1], "UTF-8");

        } else if (SystemUtils.IS_OS_WINDOWS) {
            fileName = URLDecoder.decode(surl, "UTF-8").replaceFirst("file:/", "");
        }

        final File file = new File(fileName);
        int length = 0;
        final ServletOutputStream outStream = response.getOutputStream();
        final ServletContext context = getServletConfig().getServletContext();
        String mimetype = context.getMimeType(fileName);

        // sets response content type
        if (mimetype == null) {
            mimetype = "application/octet-stream";

        }
        response.setContentType(mimetype);
        response.setContentLength((int) file.length());

        // sets HTTP header
        response.setHeader("Content-Disposition", "inline; fileName=\"" + fileName + "\"");

        final byte[] byteBuffer = new byte[BUFSIZE];
        final DataInputStream in = new DataInputStream(new FileInputStream(file));

        // reads the file's bytes and writes them to the response stream
        while (in != null && (length = in.read(byteBuffer)) != -1) {
            outStream.write(byteBuffer, 0, length);
        }

        in.close();
        outStream.close();
    } else {

        final RequestDispatcher rd = request.getRequestDispatcher(redirectUrl);
        rd.forward(request, response);
    }
}

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From source file:org.kuali.student.core.document.ui.server.upload.UploadServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    DocumentInfo info = null;//from   ww  w. j a v  a  2s.c o m
    try {
        info = documentService.getDocument(request.getParameter("docId"), ContextUtils.getContextInfo());
    } catch (Exception e) {
        LOG.error("Exception occurred", e);
    }

    if (info != null && info.getDocumentBinary() != null && info.getDocumentBinary().getBinary() != null
            && !(info.getDocumentBinary().getBinary().isEmpty())) {

        ServletOutputStream op = response.getOutputStream();
        try {
            byte[] fileBytes = Base64.decodeBase64(info.getDocumentBinary().getBinary().getBytes());
            int length = fileBytes.length;

            ServletContext context = getServletConfig().getServletContext();
            String mimetype = context.getMimeType(info.getFileName());

            response.setContentType((mimetype != null) ? mimetype : "application/octet-stream");
            response.setContentLength(length);
            response.setHeader("Content-Disposition", "attachment; filename=\"" + info.getFileName() + "\"");

            //
            //  Stream to the requester.
            //
            op.write(fileBytes, 0, length);
        } catch (Exception e) {
            LOG.error("Exception occurred", e);
        } finally {
            op.flush();
            op.close();
        }

    } else {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println(
                "Sorry, the file could not be retrieved.  It may not exist, or the server could not be contacted.");
    }

}

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From source file:edu.lternet.pasta.datapackagemanager.dataserver.DataServerServlet.java

/**
 * Process a data download HEAD request using information that was generated
 * by the Data Package Manager service./*from   w ww. j a  v a  2 s. c  o  m*/
 */
protected void doHead(HttpServletRequest request, HttpServletResponse response) throws ServletException {
    String dataToken = request.getParameter("dataToken");
    String size = request.getParameter("size");
    String objectName = request.getParameter("objectName");

    if (dataToken == null || dataToken.isEmpty() || size == null || size.isEmpty() || objectName == null
            || objectName.isEmpty()) {
        response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
    } else {
        /*
         * Find out which directory the temporary data files are being
         * placed in by the Data Package Manager
         */
        PropertiesConfiguration options = ConfigurationListener.getOptions();
        String tmpDir = options.getString("datapackagemanager.tmpDir");

        if (tmpDir == null || tmpDir.equals("")) {
            throw new ServletException("datapackagemanager.tmpDir property value was not specified.");
        }

        try {
            // reads input file from an absolute path
            String filePath = String.format("%s/%s", tmpDir, dataToken);
            File downloadFile = new File(filePath);
            if (!downloadFile.exists()) {
                String message = String.format("File not found: %s", filePath);
                throw new FileNotFoundException(message);
            }
            ServletContext context = getServletContext();

            // gets MIME type of the file
            String mimeType = context.getMimeType(filePath);
            if (mimeType == null) {
                // set to binary type if MIME mapping not found
                mimeType = "application/octet-stream";
            }

            // modifies response
            response.setContentType(mimeType);

            long length = Long.parseLong(size);
            if (length <= Integer.MAX_VALUE) {
                response.setContentLength((int) length);
            } else {
                response.addHeader("Content-Length", Long.toString(length));
            }

            // forces download
            String headerKey = "Content-Disposition";
            String headerValue = String.format("attachment; filename=\"%s\"", objectName);
            response.setHeader(headerKey, headerValue);
        } catch (FileNotFoundException e) {
            logger.error(e.getMessage());
            e.printStackTrace();
            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
        }
    }
}

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