Example usage for javax.servlet.http HttpServletResponse setContentType

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

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Introduction

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

Prototype


public void setContentType(String type);

Source Link

Document

Sets the content type of the response being sent to the client, if the response has not been committed yet.

Usage

From source file:controllers.IndexServlet.java

private static void Upload(HttpServletRequest request, HttpServletResponse response, PrintWriter writer) {
    response.setContentType("text/plain");

    try {//  w ww  . j  a v  a 2s  . c o  m
        Part httpPostedFile = request.getPart("file");

        String fileName = "";
        for (String content : httpPostedFile.getHeader("content-disposition").split(";")) {
            if (content.trim().startsWith("filename")) {
                fileName = content.substring(content.indexOf('=') + 1).trim().replace("\"", "");
            }
        }

        long curSize = httpPostedFile.getSize();
        if (DocumentManager.GetMaxFileSize() < curSize || curSize <= 0) {
            writer.write("{ \"error\": \"File size is incorrect\"}");
            return;
        }

        String curExt = FileUtility.GetFileExtension(fileName);
        if (!DocumentManager.GetFileExts().contains(curExt)) {
            writer.write("{ \"error\": \"File type is not supported\"}");
            return;
        }

        InputStream fileStream = httpPostedFile.getInputStream();

        fileName = DocumentManager.GetCorrectName(fileName);
        String fileStoragePath = DocumentManager.StoragePath(fileName, null);

        File file = new File(fileStoragePath);

        try (FileOutputStream out = new FileOutputStream(file)) {
            int read;
            final byte[] bytes = new byte[1024];
            while ((read = fileStream.read(bytes)) != -1) {
                out.write(bytes, 0, read);
            }

            out.flush();
        }

        writer.write("{ \"filename\": \"" + fileName + "\"}");

    } catch (IOException | ServletException e) {
        writer.write("{ \"error\": \"" + e.getMessage() + "\"}");
    }
}

From source file:com.ewcms.component.util.Struts2Util.java

/**
 * ?contentTypeheaders./*from ww  w .  j  a v  a2s.c  o m*/
 */
private static HttpServletResponse initResponseHeader(final String contentType, final String... headers) {
    //?headers?
    String encoding = DEFAULT_ENCODING;
    boolean noCache = DEFAULT_NOCACHE;
    for (String header : headers) {
        String headerName = StringUtils.substringBefore(header, ":");
        String headerValue = StringUtils.substringAfter(header, ":");

        if (StringUtils.equalsIgnoreCase(headerName, HEADER_ENCODING)) {
            encoding = headerValue;
        } else if (StringUtils.equalsIgnoreCase(headerName, HEADER_NOCACHE)) {
            noCache = Boolean.parseBoolean(headerValue);
        } else {
            throw new IllegalArgumentException(headerName + "??header");
        }
    }

    HttpServletResponse response = ServletActionContext.getResponse();

    //headers?
    String fullContentType = contentType + ";charset=" + encoding;
    response.setContentType(fullContentType);
    if (noCache) {
        ServletUtil.setNoCacheHeader(response);
    }

    return response;
}

From source file:com.ykun.commons.utils.excel.ExcelUtils.java

/**
 * xlscontent-type/*from  w  w w .j ava 2  s  . c  om*/
 *
 * @param response
 * @param fileName
 * @throws IOException
 */
private static void setContentType(HttpServletResponse response, String fileName) throws IOException {
    response.setContentType(CONTENT_TYPE);
    response.setHeader(HEADER_CONTENT_DISPOSITION,
            MessageFormat.format(PATTERN_DISPOSITION, URLEncoder.encode(fileName, CHARSET_UTF8)));
}

From source file:com.shallop.codedrill.common.web.struts2.Struts2Utils.java

/**
 * ?contentTypeheaders.//from w ww .  j  av  a2 s .  c om
 */
private static HttpServletResponse initResponseHeader(final String contentType, final String... headers) {
    //?headers?
    String encoding = DEFAULT_ENCODING;
    boolean noCache = DEFAULT_NOCACHE;
    for (String header : headers) {
        String headerName = StringUtils.substringBefore(header, ":");
        String headerValue = StringUtils.substringAfter(header, ":");

        if (StringUtils.equalsIgnoreCase(headerName, HEADER_ENCODING)) {
            encoding = headerValue;
        } else if (StringUtils.equalsIgnoreCase(headerName, HEADER_NOCACHE)) {
            noCache = Boolean.parseBoolean(headerValue);
        } else {
            throw new IllegalArgumentException(headerName + "??header");
        }
    }

    //      HttpServletResponse response = ServletActionContext.getResponse();
    HttpServletResponse response = null;

    //headers?
    String fullContentType = contentType + ";charset=" + encoding;
    response.setContentType(fullContentType);
    if (noCache) {
        ServletUtils.setDisableCacheHeader(response);
    }

    return response;
}

From source file:net.sf.appstatus.web.pages.Resources.java

public static void doGet(StatusWebHandler webHandler, HttpServletRequest req, HttpServletResponse resp)
        throws IOException {

    String location = null;/*w  w  w  .  j av  a 2s.  c o m*/
    String id = req.getParameter("resource");
    if (id == null) {
        id = req.getParameter("icon");
    }

    if (resources.containsKey(id)) {
        resp.setContentType(resources.get(id).getMimeType());
        location = resources.get(id).getLocation();
        InputStream is = Resources.class.getResourceAsStream(location);
        IOUtils.copy(is, resp.getOutputStream());
    } else {
        resp.sendError(404);
    }

}

From source file:fiftyone.mobile.detection.webapp.JavascriptProvider.java

static void sendJavaScript(HttpServletRequest request, HttpServletResponse response, Dataset dataSet,
        StringBuilder javascript) throws IOException {

    response.reset();//from   w  w  w  .  java 2s.  c o m
    response.setContentType("application/x-javascript");
    response.setCharacterEncoding("UTF-8");
    response.setHeader("Vary", "User-Agent");
    response.setHeader("Cache-Control", "public");
    response.setHeader("Expires", dataSet.nextUpdate.toString());
    response.setHeader("Last-Modified", dataSet.published.toString());
    try {
        response.setHeader("ETag", eTagHash(dataSet, request));
    } catch (Exception ex) {
        // The response doesn't support eTags. Nothing we can do.
    }
    response.setBufferSize(DEFAULT_BUFFER_SIZE);
    response.setHeader("Content-Length", Integer.toString(javascript.length()));

    response.getOutputStream().println(javascript.toString());
    response.getOutputStream().flush();
    response.getOutputStream().close();
}

From source file:com.sunway.cbm.util.web.ServletUtils.java

/**
 * ?xml?//from  w  ww.j a  v  a 2s.c o  m
 * 
 * @param response
 * @param object
 */
public static void responseXml(HttpServletResponse response, String xml) {
    try {
        response.setContentType("text/xml");
        response.setCharacterEncoding("UTF-8");
        response.getWriter().write(xml);
        response.getWriter().flush();
        response.getWriter().close();
    } catch (IOException e) {
        logger.debug(e.toString());
    }
}

From source file:co.edu.UNal.ArquitecturaDeSoftware.Bienestar.Vista.App.Admin.CRUDUsuarios.java

protected static void leerUsuario(HttpServletRequest request, HttpServletResponse response) throws IOException {
    UsuarioEntity e = CtrlAdmin.leerUsuario(request.getParameter("1")); // String nombre del usuario

    response.setContentType("application/json;charset=UTF-8");
    PrintWriter out = response.getWriter();

    JSONObject obj = new JSONObject();
    obj.put("id", e.getIdUsuario());
    obj.put("nombre", e.getNombres());
    obj.put("apellido", e.getApellidos());
    obj.put("tipoDocumento", e.gettDocumento());
    obj.put("documento", e.getDocumento());
    obj.put("contrasena", e.getPassword());
    obj.put("rol", e.getRol());
    out.print(obj);/*from ww  w . j a  v a 2  s . c  o  m*/
}

From source file:controllers.IndexServlet.java

private static void Convert(HttpServletRequest request, HttpServletResponse response, PrintWriter writer) {
    response.setContentType("text/plain");

    try {//from   ww w  .ja va 2s  .  c o  m
        String fileName = request.getParameter("filename");
        String fileUri = DocumentManager.GetFileUri(fileName);
        String fileExt = FileUtility.GetFileExtension(fileName);
        FileType fileType = FileUtility.GetFileType(fileName);
        String internalFileExt = DocumentManager.GetInternalExtension(fileType);

        if (DocumentManager.GetConvertExts().contains(fileExt)) {
            String key = ServiceConverter.GenerateRevisionId(fileUri);

            Pair<Integer, String> res = ServiceConverter.GetConvertedUri(fileUri, fileExt, internalFileExt, key,
                    true);

            int result = res.getKey();
            String newFileUri = res.getValue();

            if (result != 100) {
                writer.write("{ \"step\" : \"" + result + "\", \"filename\" : \"" + fileName + "\"}");
                return;
            }

            String correctName = DocumentManager
                    .GetCorrectName(FileUtility.GetFileNameWithoutExtension(fileName) + internalFileExt);

            URL url = new URL(newFileUri);
            java.net.HttpURLConnection connection = (java.net.HttpURLConnection) url.openConnection();
            InputStream stream = connection.getInputStream();

            if (stream == null) {
                throw new Exception("Stream is null");
            }

            File convertedFile = new File(DocumentManager.StoragePath(correctName, null));
            try (FileOutputStream out = new FileOutputStream(convertedFile)) {
                int read;
                final byte[] bytes = new byte[1024];
                while ((read = stream.read(bytes)) != -1) {
                    out.write(bytes, 0, read);
                }

                out.flush();
            }

            connection.disconnect();

            //remove source file ?
            //File sourceFile = new File(DocumentManager.StoragePath(fileName, null));
            //sourceFile.delete();

            fileName = correctName;
        }

        writer.write("{ \"filename\" : \"" + fileName + "\"}");

    } catch (Exception ex) {
        writer.write("{ \"error\": \"" + ex.getMessage() + "\"}");
    }
}

From source file:com.iyonger.apm.web.util.FileDownloadUtils.java

/**
 * Download the given file to the given {@link HttpServletResponse}.
 *
 * @param response {@link HttpServletResponse}
 * @param file     file path/*from  ww w  .ja v a 2s .c o m*/
 * @return true if succeeded
 */
public static boolean downloadFile(HttpServletResponse response, File file) {
    if (file == null || !file.exists()) {
        return false;
    }
    boolean result = true;
    response.reset();
    response.addHeader("Content-Disposition", "attachment;filename=" + file.getName());
    response.setContentType("application/octet-stream");
    response.addHeader("Content-Length", "" + file.length());
    InputStream fis = null;
    byte[] buffer = new byte[FILE_DOWNLOAD_BUFFER_SIZE];
    OutputStream toClient = null;
    try {
        fis = new BufferedInputStream(new FileInputStream(file));
        toClient = new BufferedOutputStream(response.getOutputStream());
        int readLength;
        while (((readLength = fis.read(buffer)) != -1)) {
            toClient.write(buffer, 0, readLength);
        }
        toClient.flush();
    } catch (FileNotFoundException e) {
        LOGGER.error("file not found:" + file.getAbsolutePath(), e);
        result = false;
    } catch (IOException e) {
        LOGGER.error("read file error:" + file.getAbsolutePath(), e);
        result = false;
    } finally {
        IOUtils.closeQuietly(fis);
        IOUtils.closeQuietly(toClient);
    }
    return result;
}