Example usage for javax.servlet.http HttpServletResponse setContentType

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:com.adnature.framework.util.Struts2Utils.java

/**
 * ./*w w w .j  ava  2 s  .  c o m*/
 * 
 * eg. <br/>
 * render("text/plain", "hello", "encoding:GBK"); <br/>
 * render("text/plain", "hello", "no-cache:false"); <br/>
 * render("text/plain", "hello", "encoding:GBK", "no-cache:false");
 * 
 * @param headers
 *            ??header??"encoding:""no-cache:",UTF-8true.
 */
public static void render(final String contentType, final String content, final String... headers) {
    try {
        // ?headers?
        String encoding = ENCODING_DEFAULT;
        boolean noCache = NOCACHE_DEFAULT;
        for (String header : headers) {
            String headerName = StringUtils.substringBefore(header, ":");
            String headerValue = StringUtils.substringAfter(header, ":");

            if (StringUtils.equalsIgnoreCase(headerName, ENCODING_PREFIX)) {
                encoding = headerValue;
            } else if (StringUtils.equalsIgnoreCase(headerName, NOCACHE_PREFIX)) {
                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) {
            response.setHeader("Pragma", "No-cache");
            response.setHeader("Cache-Control", "no-cache");
            response.setDateHeader("Expires", 0);
        }

        response.getWriter().write(content);
        response.getWriter().flush();

    } catch (IOException e) {
        logger.error(e.getMessage(), e);
    }
}

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From source file:co.edu.UNal.ArquitecturaDeSoftware.Bienestar.Vista.App.Usuario.Read.java

protected static void leerTaller(HttpServletRequest request, HttpServletResponse response) throws IOException {

    TallerEntity e = CtrlUsuario.leerTaller(request.getParameter("1")); // id de la taller

    response.setContentType("application/json;charset=UTF-8");
    PrintWriter out = response.getWriter();
    if (e.getNombre().isEmpty()) {
        JSONObject obj = new JSONObject();
        obj.put("isError", true);
        obj.put("errorDescrip", "El taller ya no esta disponible");
        out.print(obj);//  ww  w.j a  v a2  s  .co  m
    } else {
        JSONObject obj = new JSONObject();
        obj.put("id", e.getIdTaller());
        obj.put("nombre", e.getNombre());
        obj.put("descripcion", e.getDescripcion());
        obj.put("cupos", e.getCupos());
        obj.put("costo", e.getCosto());
        obj.put("fechaFin", "" + e.getFechaFinRegistro());
        obj.put("fechaInicio", "" + e.getFechaInicio());

        out.print(obj);
    }
}

---

From source file:co.edu.UNal.ArquitecturaDeSoftware.Bienestar.Vista.App.Usuario.Read.java

protected static void obtenerInscritosTaller(HttpServletRequest request, HttpServletResponse response)
        throws IOException {
    int numC = CtrlUsuario.obtenerInscritosTaller(Integer.parseInt(request.getParameter("1")));
    response.setContentType("application/json;charset=UTF-8");
    PrintWriter out = response.getWriter();
    JSONObject obj = new JSONObject();
    obj.put("inscritos", numC);
    out.print(obj);//  ww w . j  a va  2s. co  m
}

---

From source file:com.wadpam.guja.oauth2.web.Oauth2ClientAuthenticationFilter.java

private static void errorMessage(HttpServletResponse response, int responseCode, String errorMessage) {
    response.setStatus(responseCode);/*from w  ww.ja  v  a2 s .com*/
    try {
        response.getWriter().write(String.format("{\"error\":\"%s\"}", errorMessage));
        response.setContentType(APPLICATION_JSON_WITH_UTF8_CHARSET);
    } catch (IOException e) {
        LOGGER.error("Failed to write json body {}", e);
    }
}

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From source file:com.vmware.identity.samlservice.Shared.java

/**
 * Send HTTP response/*from   w  w  w  .ja  va2s .c om*/
 * @param response
 * @param contentType
 * @param str
 * @throws IOException
 */
public static void sendResponse(HttpServletResponse response, String contentType, String str)
        throws IOException {
    response.setContentType(contentType);
    PrintWriter out = response.getWriter();
    out.println(str);
    out.close();
}

---

From source file:co.edu.UNal.ArquitecturaDeSoftware.Bienestar.Vista.App.Usuario.Read.java

protected static void leerConvocatoria(HttpServletRequest request, HttpServletResponse response)
        throws IOException {

    ConvocatoriaEntity e = CtrlUsuario.leerConvocatoria(request.getParameter("1")); // id de la convocatoria

    response.setContentType("application/json;charset=UTF-8");
    PrintWriter out = response.getWriter();
    if (e.getNombre().isEmpty()) {
        JSONObject obj = new JSONObject();
        obj.put("isError", true);
        obj.put("errorDescrip", "La convocatoria ya no existe");
        out.print(obj);// w w  w .  j  a  v  a2  s. com
    } else {
        JSONObject obj = new JSONObject();
        obj.put("id", e.getIdConvocatoria());
        obj.put("nombre", e.getNombre());
        obj.put("descripcion", e.getDescripcion());
        obj.put("cupos", e.getCupos());
        obj.put("fechaFin", "" + e.getFechaFinRegistro());
        out.print(obj);
    }
}

---

From source file:ch.rasc.downloadchart.DownloadChartServlet.java

private static void handleJpg(HttpServletResponse response, byte[] imageData, Integer width, Integer height,
        String filename, JpegOptions options) throws IOException {

    response.setContentType("image/jpeg");
    response.setHeader("Content-Disposition", "attachment; filename=\"" + filename + ".jpg\";");

    BufferedImage image = ImageIO.read(new ByteArrayInputStream(imageData));

    Dimension newDimension = calculateDimension(image, width, height);
    int imgWidth = image.getWidth();
    int imgHeight = image.getHeight();
    if (newDimension != null) {
        imgWidth = newDimension.width;//w w  w  . ja va2  s.c  o  m
        imgHeight = newDimension.height;
    }

    BufferedImage newImage = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_RGB);

    Graphics2D g = newImage.createGraphics();
    g.drawImage(image, 0, 0, imgWidth, imgHeight, Color.BLACK, null);
    g.dispose();

    if (newDimension != null) {
        g.setComposite(AlphaComposite.Src);
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    }

    try (ImageOutputStream ios = ImageIO.createImageOutputStream(response.getOutputStream())) {
        Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName("jpg");
        ImageWriter writer = iter.next();
        ImageWriteParam iwp = writer.getDefaultWriteParam();
        iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        if (options != null && options.quality != null && options.quality != 0 && options.quality != 100) {
            iwp.setCompressionQuality(options.quality / 100f);
        } else {
            iwp.setCompressionQuality(1);
        }
        writer.setOutput(ios);
        writer.write(null, new IIOImage(newImage, null, null), iwp);
        writer.dispose();
    }
}

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

protected static void leerUsuariosMultiplesId(HttpServletRequest request, HttpServletResponse response)
        throws IOException {
    ArrayList<UsuarioEntity> usuarios = new ArrayList<>();
    usuarios = CtrlAdmin.leerMultiplesUsuarios(Integer.parseInt(request.getParameter("1")),
            Integer.parseInt(request.getParameter("2"))); // id del usuario

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

    JSONArray list1 = new JSONArray();
    for (UsuarioEntity usuario : usuarios) {
        JSONObject obj = new JSONObject();
        obj.put("id", usuario.getIdUsuario());
        obj.put("titulo", usuario.getNombres() + " " + usuario.getApellidos());
        list1.add(obj);//from w  w  w.  j av  a2s.c o  m
    }
    out.print(list1);
}

---

From source file:org.artifactory.util.HttpUtils.java

public static void sendErrorResponse(HttpServletResponse response, int statusCode, String message)
        throws IOException {
    response.setContentType(MediaType.APPLICATION_JSON_VALUE);
    response.setStatus(statusCode);/* ww  w.j  ava 2s .c om*/
    ObjectMapper mapper = new ObjectMapper();
    mapper.configure(SerializationConfig.Feature.INDENT_OUTPUT, true);
    ErrorResponse errorResponse = new ErrorResponse(statusCode, message);
    response.getWriter().write(mapper.writeValueAsString(errorResponse));
}

---

From source file:com.vmware.identity.openidconnect.server.Shared.java

public static void writeJSONResponse(HttpServletResponse httpServletResponse, int statusCode,
        JSONObject jsonObject) throws IOException {
    Validate.notNull(httpServletResponse, "httpServletResponse");
    Validate.notNull(jsonObject, "jsonObject");

    PrintWriter writer = null;// w w w . j a v a 2  s.  co  m
    try {
        httpServletResponse.setStatus(statusCode);
        httpServletResponse.setContentType("application/json");
        writer = httpServletResponse.getWriter();
        writer.print(jsonObject.toString());
    } finally {
        if (writer != null) {
            writer.close();
        }
    }
}

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