Example usage for javax.servlet.http HttpServletResponse setHeader

Introduction

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

Prototype

public void setHeader(String name, String value);

Source Link

Document

Sets a response header with the given name and value.

Usage

From source file:com.github.rnewson.couchdb.lucene.util.ServletUtils.java

public static void sendJsonError(final HttpServletRequest request, final HttpServletResponse response,
        final int code, final JSONObject error) throws IOException, JSONException {
    setResponseContentTypeAndEncoding(request, response);
    response.setHeader(HttpHeaders.CACHE_CONTROL, "must-revalidate,no-cache,no-store");
    response.setStatus(code);/*from   w ww.j  a  v a  2 s.  c  o  m*/
    error.put("code", code);

    final Writer writer = response.getWriter();
    try {
        writer.write(error.toString());
        writer.write("\r\n");
    } finally {
        writer.close();
    }
}

From source file:com.indeed.imhotep.web.ResultServlet.java

static void setContentType(HttpServletResponse resp, boolean avoidFileSave, boolean csv, boolean progress) {
    if (avoidFileSave) {
        resp.setContentType("text/plain");
    } else if (csv) {
        resp.setContentType("text/csv");
        resp.setHeader("Content-Disposition", "inline; filename=\"iqlresult.csv\"");
    } else if (progress) {
        resp.setContentType("text/event-stream");
        resp.setHeader("Cache-Control", "no-cache");
    } else {//from   w w w . j ava  2 s  . c o m
        resp.setContentType("text/tab-separated-values");
        resp.setHeader("Content-Disposition", "inline; filename=\"iqlresult.tsv\"");
    }
}

From source file:com.handpay.ibenefit.framework.util.WebUtils.java

public static void setNoCacheHeader(HttpServletResponse response) {
    // Http 1.0 header
    response.setDateHeader("Expires", 0);
    // Http 1.1 header
    response.setHeader("Cache-Control", "no-cache");
}

From source file:org.ambraproject.wombat.util.ReproxyUtil.java

/**
 * Apply reproxying information for a requested asset to a response.
 * <p/>/*from w w  w  . ja v  a 2s . c  o  m*/
 * The request may not support the reproxying protocol, and there may not be any reproxy URLs for the asset. In either
 * case, the response is not touched. The return value indicates this.
 * <p/>
 * Note that both {@code request} and {@code response} are for the client. Neither is for the service that reproxies
 * the asset. It is assumed that the caller has already queried the service that reproxies the asset, which provides
 * the {@code reproxyUrls} argument.
 *
 * @param request     a request from the client
 * @param response    a response to the client
 * @param reproxyUrls a list of available reproxy URLs for the requested asset (empty and {@code null} are allowed,
 *                    indicating none are available)
 * @param cacheFor    number of seconds to instruct the client to cache the reproxy information
 * @return {@code true} if the response was filled with reproxy information, in which case nothing should be written
 * to the response body; {@code false} if not, in which case the response body should be written
 */
public static boolean applyReproxy(HttpServletRequest request, HttpServletResponse response,
        List<String> reproxyUrls, int cacheFor) {
    if (reproxyUrls != null && !reproxyUrls.isEmpty() && supportsReproxy(request)) {
        response.setStatus(HttpStatus.SC_OK);
        response.setHeader(X_REPROXY_URL, REPROXY_URL_JOINER.join(reproxyUrls));
        response.setHeader(X_REPROXY_CACHE_FOR, cacheFor + "; Last-Modified Content-Type Content-Disposition");
        return true;
    }
    return false;
}

From source file:io.wcm.wcm.commons.caching.CacheHeader.java

/**
 * Set expires header to given date./*www  . j  a  v  a  2  s  . c  om*/
 * @param response Response
 * @param date Expires date
 */
public static void setExpires(HttpServletResponse response, Date date) {
    if (date == null) {
        response.setHeader(HEADER_EXPIRES, "-1");
    } else {
        response.setHeader(HEADER_EXPIRES, formatDate(date));
    }
}

From source file:com.voa.weixin.utils.HttpUtils.java

public static void write(HttpServletResponse response, String message) throws IOException {
    PrintWriter writer = null;/* w  w  w.ja  v  a  2  s.  co  m*/
    try {
        response.setHeader("Charset", "UTF-8");
        response.setCharacterEncoding("UTF-8");
        writer = response.getWriter();

        writer.write(message);
    } finally {
        if (writer != null)
            writer.close();
    }
}

From source file:com.klwork.common.utils.WebUtils.java

/**
 * ???/*from   ww  w  .  ja v a 2s  .  co  m*/
 * @param request
 * @param response
 */
public static void VerificationCode(HttpServletRequest request, HttpServletResponse response) throws Exception {
    response.setHeader("Pragma", "No-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setDateHeader("Expires", 0);
    // 
    int width = 60, height = 20;
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

    // ?
    Graphics g = image.getGraphics();

    // ??
    Random random = new Random();

    // 
    g.setColor(getRandColor(200, 250));
    g.fillRect(0, 0, width, height);

    // 
    g.setFont(new Font("Times New Roman", Font.PLAIN, 18));

    // 
    // g.setColor(new Color());
    // g.drawRect(0,0,width-1,height-1);

    // ?155?????
    g.setColor(getRandColor(160, 200));
    for (int i = 0; i < 155; i++) {
        int x = random.nextInt(width);
        int y = random.nextInt(height);
        int xl = random.nextInt(12);
        int yl = random.nextInt(12);
        g.drawLine(x, y, x + xl, y + yl);
    }

    String base = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQUSTUVWXYZ0123456789";
    // ????(4?)
    String sRand = "";
    for (int i = 0; i < 4; i++) {
        int start = random.nextInt(base.length());
        String rand = base.substring(start, start + 1);
        sRand = sRand.concat(rand);
        // ??
        g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));
        g.drawString(rand, 13 * i + 6, 16);
    }

    // ??SESSION
    request.getSession().setAttribute("entrymrand", sRand);

    // 
    g.dispose();
    OutputStream out = response.getOutputStream();
    // ?
    ImageIO.write(image, "JPEG", out);

    out.flush();
    out.close();
}

From source file:com.shz.foundation.utils.Servlets.java

/**
 * /*from www.jav a2  s  .c o  m*/
 * @param response
 * @param image 
 * @param sufix ?
 */
public static void writeBufferedImage(HttpServletResponse response, BufferedImage image, String sufix)
        throws IOException {
    response.setHeader("Cache-Control", "private,no-cache,no-store");
    response.setContentType("image/" + sufix);
    ImageIO.write(image, sufix, response.getOutputStream());
    response.getOutputStream().close();
}

From source file:com.yiji.openapi.sdk.util.Servlets.java

public static void setHeader(HttpServletResponse response, String name, String value) {
    response.setHeader(name, value);
}

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);/*w  w  w  .j a va 2s . com*/
    fis.close();

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