Example usage for javax.servlet.http HttpServletRequest getHeader

Introduction

In this page you can find the example usage for javax.servlet.http HttpServletRequest getHeader.

Prototype

public String getHeader(String name);

Source Link

Document

Returns the value of the specified request header as a String.

Usage

From source file:httpUtils.HttpUtils.java

/**
 * Parse the request headers, build the response, stream back file
 * @param request//w  w w .j  a  v  a  2s .c o  m
 * @param response
 * @param dataStream
 * @param fileLength
 * @param fileName
 * @param fileLastModified
 * @param contentType
 * @return
 */
private static HttpServletResponse getFileAsStream(HttpServletRequest request, HttpServletResponse response,
        InputStream dataStream, long fileLength, String fileName, long fileLastModified, String contentType) {
    if (dataStream == null) {
        response.setStatus(HttpServletResponse.SC_NOT_FOUND);
        return response;
    }

    if (StringUtils.isEmpty(fileName) || fileLastModified == 0L) {
        response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        return response;
    }

    String ifNoneMatch = request.getHeader("If-None-Match");
    if (ifNoneMatch != null && matches(ifNoneMatch, fileName)) {
        response.setHeader("ETag", fileName);
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return response;
    }

    long ifModifiedSince = request.getDateHeader("If-Modified-Since");
    if (ifNoneMatch == null && ifModifiedSince != -1 && ifModifiedSince + 1000 > fileLastModified) {
        response.setHeader("ETag", fileName);
        response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
        return response;
    }

    String ifMatch = request.getHeader("If-Match");
    if (ifMatch != null && !matches(ifMatch, fileName)) {
        response.setStatus(HttpServletResponse.SC_PRECONDITION_FAILED);
        return response;
    }

    long ifUnmodifiedSince = request.getDateHeader("If-Unmodified-Since");
    if (ifUnmodifiedSince != -1 && ifUnmodifiedSince + 1000 <= fileLastModified) {
        response.setStatus(HttpServletResponse.SC_PRECONDITION_FAILED);
        return response;
    }

    Range full = new Range(0, fileLength - 1, fileLength);
    List<Range> ranges = new ArrayList<Range>();
    String range = request.getHeader("Range");
    if (range != null) {
        if (!range.matches("^bytes=\\d*-\\d*(,\\d*-\\d*)*$")) {
            response.setHeader("Content-Range", "bytes */" + fileLength);
            response.setStatus(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
            return response;
        }

        String ifRange = request.getHeader("If-Range");
        if (ifRange != null && !ifRange.equals(fileName)) {
            try {
                long ifRangeTime = request.getDateHeader("If-Range");
                if (ifRangeTime != -1) {
                    ranges.add(full);
                }
            } catch (IllegalArgumentException ignore) {
                ranges.add(full);
            }
        }

        if (ranges.isEmpty()) {
            for (String part : range.substring(6).split(",")) {
                // Assuming a file with length of 100, the following
                // examples returns bytes at:
                // 50-80 (50 to 80), 40- (40 to length=100), -20
                // (length-20=80 to length=100).
                long start = sublong(part, 0, part.indexOf("-"));
                long end = sublong(part, part.indexOf("-") + 1, part.length());

                if (start == -1) {
                    start = fileLength - end;
                    end = fileLength - 1;
                } else if (end == -1 || end > fileLength - 1) {
                    end = fileLength - 1;
                }

                // Check if Range is syntactically valid. If not, then
                // return 416.
                if (start > end) {
                    response.setHeader("Content-Range", "bytes */" + fileLength); // Required
                    // in
                    // 416.
                    response.setStatus(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
                    return response;
                }

                // Add range.
                ranges.add(new Range(start, end, fileLength));
            }
        }
    }

    // Get content type by file name and set content disposition.
    String disposition = "inline";

    // If content type is unknown, then set the default value.
    // For all content types, see:
    // http://www.w3schools.com/media/media_mimeref.asp
    // To add new content types, add new mime-mapping entry in web.xml.
    if (contentType == null) {
        contentType = "application/octet-stream";
    } else if (!contentType.startsWith("image")) {
        // Else, expect for images, determine content disposition. If
        // content type is supported by
        // the browser, then set to inline, else attachment which will pop a
        // 'save as' dialogue.
        String accept = request.getHeader("Accept");
        disposition = accept != null && accepts(accept, contentType) ? "inline" : "attachment";
    }

    // Initialize response.
    response.reset();
    response.setBufferSize(HttpUtils.DEFAULT_BUFFER_SIZE);
    response.setHeader("Content-Disposition", disposition + ";filename=\"" + fileName + "\"");
    response.setHeader("Accept-Ranges", "bytes");
    response.setHeader("ETag", fileName);
    response.setDateHeader("Last-Modified", fileLastModified);
    response.setDateHeader("Expires", System.currentTimeMillis() + HttpUtils.DEFAULT_EXPIRE_TIME);

    // Send requested file (part(s)) to client
    // ------------------------------------------------

    // Prepare streams.
    InputStream input = null;
    OutputStream output = null;

    try {
        // Open streams.
        input = new BufferedInputStream(dataStream);
        output = response.getOutputStream();

        if (ranges.isEmpty() || ranges.get(0) == full) {

            // Return full file.
            Range r = full;
            response.setContentType(contentType);
            response.setHeader("Content-Range", "bytes " + r.start + "-" + r.end + "/" + r.total);
            response.setHeader("Content-Length", String.valueOf(r.length));
            copy(input, output, fileLength, r.start, r.length);

        } else if (ranges.size() == 1) {

            // Return single part of file.
            Range r = ranges.get(0);
            response.setContentType(contentType);
            response.setHeader("Content-Range", "bytes " + r.start + "-" + r.end + "/" + r.total);
            response.setHeader("Content-Length", String.valueOf(r.length));
            response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT); // 206.

            // Copy single part range.
            copy(input, output, fileLength, r.start, r.length);

        } else {

            // Return multiple parts of file.
            response.setContentType("multipart/byteranges; boundary=" + HttpUtils.MULTIPART_BOUNDARY);
            response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT); // 206.

            // Cast back to ServletOutputStream to get the easy println
            // methods.
            ServletOutputStream sos = (ServletOutputStream) output;

            // Copy multi part range.
            for (Range r : ranges) {
                // Add multipart boundary and header fields for every range.
                sos.println();
                sos.println("--" + HttpUtils.MULTIPART_BOUNDARY);
                sos.println("Content-Type: " + contentType);
                sos.println("Content-Range: bytes " + r.start + "-" + r.end + "/" + r.total);

                // Copy single part range of multi part range.
                copy(input, output, fileLength, r.start, r.length);
            }

            // End with multipart boundary.
            sos.println();
            sos.println("--" + HttpUtils.MULTIPART_BOUNDARY + "--");
        }
    } catch (Exception e) {
        log.error("get file as stream failed", e);
    } finally {
        // Gently close streams.
        close(output);
        close(input);
        close(dataStream);
    }
    return response;
}

---

From source file:net.javacrumbs.test.AbstractServlet.java

protected int getCurrentNumber(HttpServletRequest req) {
    int number;/*from  w  w  w.jav  a2s . c om*/
    String header = req.getHeader("number");
    if (header != null) {
        number = Integer.valueOf(header);
    } else {
        number = 1;
    }
    return number;
}

---

From source file:br.interactive.ecm.gerais.service.UsuarioService.java

public LoginDTO isGetUser(HttpServletRequest request) {

    String token = request.getHeader("Authorization");
    UserSession userSession = userSessionDAO.getUserSessionByToken(token);

    if (userSession != null) {
        LoginDTO loginDTO = usuarioDAO.getUsuarioByLoginDTO(userSession.getTxLogin());
        loginDTO.setToken(userSession.getTxToken());
        return loginDTO;
    }//  w  w  w.  j a v a 2  s .  c  o m

    return null;
}

---

From source file:it.geosolutions.httpproxy.callback.HostChecker.java

/**
 * @param req/*w  w  w  .  j  a  va2s  .c o m*/
 * @return String
 */
private String getRemoteAddr(HttpServletRequest req) {
    String forwardedFor = req.getHeader("X-Forwarded-For");
    if (forwardedFor != null) {
        String[] ips = forwardedFor.split(", ");
        return ips[0];
    } else {
        return req.getRemoteAddr();
    }
}

---

From source file:org.lecture.controller.TestCaseController.java

/**
 * Creates a new TestCaseContainer. This method should get called before the
 * code submission gets send.//  w w w  . j  a  v a2  s . c o m
 *
 * @param entity    the test from the post-request. This test is deserialized by
 *                  jackson.
 * @return A respoonse containing a compilation-report.
 */
@RequestMapping(method = RequestMethod.POST)
public ResponseEntity<?> create(@RequestBody SourceContainer entity, HttpServletRequest request) {
    String userId = request.getHeader("User-Id");
    entity.setUserId(userId);
    entity.setTests(true);
    entity = testRepository.save(entity);
    return super.createEntity(entity, "Accept-FilePatch", "application/json;charset=UTF-8");
}

---

From source file:com.javiermoreno.springboot.rest.AuthenticationTokenProcessingFilter.java

@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
        throws IOException, ServletException {
    HttpServletRequest request = (HttpServletRequest) req;
    String encryptedToken = request.getHeader("X-Auth-Token");
    if (SecurityContextHolder.getContext().getAuthentication() == null && encryptedToken != null) {
        Token token = new Token(cryptoService, encryptedToken);
        String ip = request.getHeader("X-Forwarded-For");
        if (ip == null) {
            ip = request.getRemoteAddr();
        }/*w w  w .  j  a  v a2  s.c o  m*/
        if (ip.equals(token.getIp()) == true && token.isExpired() == false) {
            UserDetails userDetails = userDetailsService.loadUserByUsername(token.getUsername());
            UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(
                    userDetails.getUsername(), userDetails.getPassword());
            authentication.setDetails(
                    new WebAuthenticationDetailsSource().buildDetails((HttpServletRequest) request));
            SecurityContextHolder.getContext()
                    .setAuthentication(authenticationManager.authenticate(authentication));
        }

    }
    chain.doFilter(req, res);
}

---

From source file:cec.easyshop.storefront.filters.btg.RefererHeaderBtgFilter.java

@Override
protected AbstractBTGRuleDataEvent getEvent(final HttpServletRequest request) {
    RefererHeaderUsedBTGRuleDataEvent result = null;
    final String referrer = request.getHeader(REFERER_HEADER_NAME);
    if (!StringUtils.isBlank(referrer)) {
        result = new RefererHeaderUsedBTGRuleDataEvent(referrer);
    }//from w w  w  .  java 2  s. c om
    return result;
}

---

From source file:com.rockagen.gnext.controller.ApplicationController.java

/**
 * Get uid// w  ww. j  a v  a2  s . c om
 *
 * @return uid
 */
public String uid(HttpServletRequest request) {
    String token = request.getHeader(AUTH_HEADER_NAME);
    return Token.getUidFromToken(token);
}

---

From source file:org.energyos.espi.datacustodian.web.api.ServiceStatusRESTController.java

private String getApplicationStatus(HttpServletRequest request) {
    String token = request.getHeader("authorization");
    String applicationStatus = "0";

    if (token != null) {
        token = token.replace("Bearer ", "");
        Authorization authorization = authorizationService.findByAccessToken(token);
        if (authorization != null) {
            ApplicationInformation applicationinformation = authorization.getApplicationInformation();
            if (applicationinformation != null) {
                applicationStatus = applicationinformation.getDataCustodianApplicationStatus();
            }//from w w  w . j  a v a 2 s .  com
        }
    }

    return applicationStatus;

}

---

From source file:com.googlesource.gerrit.plugins.github.oauth.OAuthFilter.java

private boolean isAuthenticatedRestCall(HttpServletRequest httpRequest) {
    return !StringUtils.isEmpty(httpRequest.getHeader(XGerritAuth.X_GERRIT_AUTH));
}

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