Example usage for javax.servlet.http HttpServletResponse SC_NOT_MODIFIED

Introduction

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

Prototype

int SC_NOT_MODIFIED

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Document

Status code (304) indicating that a conditional GET operation found that the resource was available and not modified.

Usage

From source file:fi.aluesarjat.prototype.ContextAccessServlet.java

@Override
public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
    HttpServletRequest request = (HttpServletRequest) req;
    HttpServletResponse response = (HttpServletResponse) res;

    long ifModifiedSince = request.getDateHeader("If-Modified-Since");
    if (ifModifiedSince >= LAST_MODIFIED) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;//from w w  w  .  j av  a 2s  .  c o m
    }

    String context = request.getRequestURL().toString();
    RDFConnection connection = repository.openConnection();
    try {
        SPARQLQuery query = connection.createQuery(QueryLanguage.SPARQL,
                "CONSTRUCT { ?s ?p ?o } WHERE { GRAPH ?context { ?s ?p ?o } }");
        query.setBinding("context", new UID(context));

        String contentType = null;
        String format = request.getParameter("format");
        if ("turtle".equals(format)) {
            contentType = Format.TURTLE.getMimetype();
        } else if ("ntriples".equals(format)) {
            contentType = Format.NTRIPLES.getMimetype();
        } else {
            contentType = getAcceptedType(request, Format.RDFXML);
        }
        response.setDateHeader("Last-Modified", System.currentTimeMillis());
        response.setContentType(contentType);
        query.streamTriples(response.getWriter(), contentType);
    } finally {
        connection.close();
    }
}

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From source file:com.carolinarollergirls.scoreboard.jetty.XmlScoreBoardServlet.java

protected void get(HttpServletRequest request, HttpServletResponse response) throws IOException, JDOMException {
    XmlListener listener = getXmlListenerForRequest(request);
    if (null == listener) {
        registrationKeyNotFound(request, response);
        return;/*from w ww.  j a v a 2 s . c om*/
    }

    Document d = listener.getDocument(LONGPOLL_TIMEOUT);
    if (null == d) {
        if (debugGet)
            ScoreBoardManager.printMessage("GET to " + listener.getKey() + " no change");
        response.sendError(HttpServletResponse.SC_NOT_MODIFIED);
    } else {
        if (debugGet)
            ScoreBoardManager
                    .printMessage("GET to " + listener.getKey() + "\n" + prettyXmlOutputter.outputString(d));
        response.setContentType("text/xml");
        rawXmlOutputter.output(d, response.getOutputStream());
        response.setStatus(HttpServletResponse.SC_OK);
    }
}

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From source file:com.thoughtworks.go.domain.ChecksumFileHandler.java

public boolean handleResult(int returncode, GoPublisher goPublisher) {
    if (returncode == HttpServletResponse.SC_NOT_FOUND) {
        deleteQuietly(checksumFile);//from  w  ww .  ja va2 s  . c om
        goPublisher.taggedConsumeLineWithPrefix(GoPublisher.ERR,
                "[WARN] The md5checksum property file was not found on the server. Hence, Go can not verify the integrity of the artifacts.");
        return true;
    }
    if (returncode == HttpServletResponse.SC_NOT_MODIFIED) {
        LOG.info("[Agent Fetch Artifact] Not downloading checksum file as it has not changed");
        return true;
    }
    if (returncode == HttpServletResponse.SC_OK) {
        LOG.info("[Agent Fetch Artifact] Saved checksum property file [{}]", checksumFile);
        return true;
    }
    return returncode < HttpServletResponse.SC_BAD_REQUEST;
}

---

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

public static boolean checkIfNoneMatchEtag(HttpServletRequest request, HttpServletResponse response,
        String etag) {//from ww w  . j a  va 2  s  .  c  om
    String headerValue = request.getHeader("If-None-Match");
    if (headerValue != null) {
        boolean conditionSatisfied = false;
        if (!"*".equals(headerValue)) {
            StringTokenizer commaTokenizer = new StringTokenizer(headerValue, ",");

            while (!conditionSatisfied && commaTokenizer.hasMoreTokens()) {
                String currentToken = commaTokenizer.nextToken();
                if (currentToken.trim().equals(etag)) {
                    conditionSatisfied = true;
                }
            }
        } else {
            conditionSatisfied = true;
        }

        if (conditionSatisfied) {
            response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
            response.setHeader("ETag", etag);
            return false;
        }
    }
    return true;
}

---

From source file:com.cloud.servlet.StaticResourceServlet.java

@Override
protected void doGet(final HttpServletRequest req, final HttpServletResponse resp)
        throws ServletException, IOException {
    final File requestedFile = getRequestedFile(req);
    if (!requestedFile.exists() || !requestedFile.isFile()) {
        resp.setStatus(HttpServletResponse.SC_NOT_FOUND);
        return;/*from w ww  . j  a v a 2 s  .  com*/
    }
    final String etag = getEtag(requestedFile);
    if (etag.equals(req.getHeader("If-None-Match"))) {
        resp.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;
    }
    // have to send data, either compressed or the original
    final File compressedStatic = getCompressedVersion(requestedFile);
    InputStream fileContent = null;
    try {
        resp.setContentType(getContentType(requestedFile.getName()));
        resp.setHeader("ETag", etag);
        resp.setStatus(HttpServletResponse.SC_OK);
        if (isClientCompressionSupported(req) && compressedStatic.exists()) {
            // gzip compressed
            resp.setHeader("Content-Encoding", "gzip");
            resp.setContentLength((int) compressedStatic.length());
            fileContent = new FileInputStream(compressedStatic);
        } else {
            // uncompressed
            resp.setContentLength((int) requestedFile.length());
            fileContent = new FileInputStream(requestedFile);
        }
        IOUtils.copy(fileContent, resp.getOutputStream());
    } finally {
        IOUtils.closeQuietly(fileContent);
    }
}

---

From source file:nl.b3p.viewer.stripes.ImageActionBean.java

public Resolution download() throws FileNotFoundException {

    final Resource r = Stripersist.getEntityManager().find(Resource.class, name);
    if (r == null) {
        return new ErrorResolution(HttpServletResponse.SC_NOT_FOUND);
    }//from  w  ww .ja  va2 s.  c o m

    if (r.getModified() != null) {
        long ifModifiedSince = context.getRequest().getDateHeader("If-Modified-Since");

        if (ifModifiedSince != -1) {
            if (ifModifiedSince >= r.getModified().getTime()) {
                return new ErrorResolution(HttpServletResponse.SC_NOT_MODIFIED);
            }
        }
    }

    StreamingResolution res = new StreamingResolution(r.getContentType()) {
        @Override
        public void stream(HttpServletResponse response) throws Exception {

            OutputStream out = response.getOutputStream();

            InputStream in = new ByteArrayInputStream(r.getData());
            IOUtils.copy(in, out);
            in.close();
        }
    };
    res.setLastModified(r.getModified().getTime());
    res.setFilename(r.getName());
    res.setLength(r.getSize());
    res.setAttachment(false);
    return res;
}

---

From source file:fi.aluesarjat.prototype.AreasServlet.java

@Override
public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
    HttpServletRequest request = (HttpServletRequest) req;
    HttpServletResponse response = (HttpServletResponse) res;

    long ifModifiedSince = request.getDateHeader("If-Modified-Since");
    if (ifModifiedSince >= LAST_MODIFIED) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return;/*w ww  . j  a v  a2s .  co  m*/
    }

    response.setContentType("application/json");
    response.setCharacterEncoding("UTF-8");
    response.setDateHeader("Last-Modified", System.currentTimeMillis());
    response.setHeader("Cache-Control", "max-age=86400");

    String level = request.getParameter("level");
    String content;
    if (level == null) {
        content = areas;
    } else if ("1".equals(level)) {
        content = areas1;
    } else if ("2".equals(level)) {
        content = areas2;
    } else if ("3".equals(level)) {
        content = areas3;
    } else if ("4".equals(level)) {
        content = areas4;
    } else {
        throw new IllegalArgumentException("Illegal level " + level);
    }
    response.getWriter().append(content);
    response.getWriter().flush();

}

---

From source file:ch.entwine.weblounge.test.util.TestSiteUtils.java

/**
 * Test for the correct response when etag header is set.
 * //from ww w  . j av a  2 s . c  o  m
 * @param request
 *          the http request
 * @param eTagValue
 *          the expected etag value
 * @param logger
 *          used to log test output
 * @param params
 *          the request parameters
 * @throws Exception
 *           if processing the request fails
 */
public static void testETagHeader(HttpUriRequest request, String eTagValue, Logger logger, String[][] params)
        throws Exception {
    DefaultHttpClient httpClient = new DefaultHttpClient();
    try {
        request.removeHeaders("If-Modified-Since");
        request.setHeader("If-None-Match", eTagValue);
        logger.info("Sending 'If-None-Match' request to {}", request.getURI());
        HttpResponse response = TestUtils.request(httpClient, request, params);
        assertEquals(HttpServletResponse.SC_NOT_MODIFIED, response.getStatusLine().getStatusCode());
        assertNull(response.getEntity());
    } finally {
        httpClient.getConnectionManager().shutdown();
    }

    httpClient = new DefaultHttpClient();
    try {
        request.removeHeaders("If-Modified-Since");
        request.setHeader("If-None-Match", "\"abcdefghijklmt\"");
        logger.info("Sending 'If-None-Match' request to {}", request.getURI());
        HttpResponse response = TestUtils.request(httpClient, request, params);
        assertEquals(HttpServletResponse.SC_OK, response.getStatusLine().getStatusCode());
        assertNotNull(response.getEntity());
        response.getEntity().consumeContent();
    } finally {
        httpClient.getConnectionManager().shutdown();
    }
}

---

From source file:cn.leancloud.diamond.server.controller.ConfigController.java

public String getConfig(HttpServletRequest request, HttpServletResponse response, String dataId, String group) {
    response.setHeader("Content-Type", "text/html;charset=UTF-8");
    final String address = getRemortIP(request);
    if (address == null) {
        // ?400//from   w  w w .  j  a v  a  2  s.  c  o  m
        response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
        return "400";
    }

    if (GlobalCounter.getCounter().decrementAndGet() >= 0) {
        response.setStatus(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
        return "503";
    }

    String md5 = this.configService.getContentMD5(dataId, group);
    if (md5 == null) {
        return "404";
    }

    response.setHeader(Constants.CONTENT_MD5, md5);

    // 304???double-check??
    if (diskService.isModified(dataId, group)) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return "304";
    }
    String path = configService.getConfigInfoPath(dataId, group);
    // ?
    if (diskService.isModified(dataId, group)) {
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return "304";
    }
    // ?
    response.setHeader("Pragma", "no-cache");
    response.setDateHeader("Expires", 0);
    response.setHeader("Cache-Control", "no-cache,no-store");
    return "forward:" + path;
}

---

From source file:org.eclipse.virgo.apps.repository.web.RepositoryController.java

@RequestMapping(method = RequestMethod.GET, value = "/*")
void getIndex(HttpServletRequest request, HttpServletResponse response) throws IOException {
    String path = request.getRequestURI();
    String repository = path.substring(path.lastIndexOf('/') + 1);

    RepositoryIndex index = this.repositoryManager.getIndex(repository);
    if (index != null) {
        String indexETag = index.getETag();

        String eTagHeader = request.getHeader(IF_NONE_MATCH_HEADER_NAME);
        if (eTagHeader != null) {
            String[] eTags = eTagHeader.split(",");
            for (String eTag : eTags) {
                if (eTag.equals(indexETag)) {
                    response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
                    return;
                }/*w ww.j ava2  s  .  c o m*/
            }
        }

        response.setContentType(INDEX_CONTENT_TYPE);
        response.setContentLength(index.getLength());
        response.addHeader(ETAG_HEADER_NAME, index.getETag());

        FileCopyUtils.copy(index.getInputStream(), response.getOutputStream());
    } else {
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
    }
}

---

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