Java Code Examples for javax.servlet.http.HttpSession#getAttributeNames()

protected List<String> extractHttpAttributeNameList() { // native only
    final HttpSession session = getSessionExisting();
    if (session == null) {
        return Collections.emptyList();
    }
    final Enumeration<String> attributeNames = session.getAttributeNames();
    final List<String> nameList = new ArrayList<String>();
    while (attributeNames.hasMoreElements()) {
        nameList.add((String) attributeNames.nextElement());
    }
    return Collections.unmodifiableList(nameList);
}
 

/**
 * 自运营登录
 * @param ah
 * @param uuid
 * @param uname 名称
 * @param uhead 头像
 * @return
 * @throws HongsException
 */
public static Map userSign(ActionHelper ah, String uuid, String uname, String uhead)
throws HongsException {
    long      time = System.currentTimeMillis() / 1000 ;
    HttpSession sd = ah.getRequest( ).getSession(false);

    // 重建会话
    if (sd != null) {
        Enumeration<String> ns = sd.getAttributeNames();
        Map<String, Object> ss = new HashMap (/*Copy*/);
        while ( ns.hasMoreElements() ) {
            String nn = ns.nextElement (    );
            ss.put(nn , sd.getAttribute(nn) );
        }
        sd.invalidate();
        sd = ah.getRequest().getSession(true);
        for(Map.Entry<String,Object> et: ss.entrySet()) {
            sd.setAttribute(et.getKey(), et.getValue());
        }
    } else {
        sd = ah.getRequest().getSession(true);
    }
    String ssid = sd.getId();

    // 设置会话
    sd.setAttribute(Cnst.UID_SES, uuid);
    sd.setAttribute(Cnst.UST_SES, time);
    sd.setAttribute(NAME, uname);
    sd.setAttribute(HEAD, uhead);

    // 返回数据
    Map rd = new HashMap();
    rd.put(Cnst.UST_SES, time);
    rd.put(Cnst.UID_SES, uuid);
    rd.put(SSID, ssid );
    rd.put(NAME, uname);
    rd.put(HEAD, uhead);

    return rd;
}
 

private void reSetAttributes(SessionWrapper sessionWrapper) {
	HttpSession realSession = sessionWrapper.delegate;
	Enumeration<String> attributeNames = realSession.getAttributeNames();
	while (attributeNames.hasMoreElements()) {
		String attributeName = attributeNames.nextElement();

		if (!sessionWrapper.readAttributeNames.contains(attributeName)) {
			//Attribute was not read, so we don't need to re-set it.
			continue;
		}

		Object attributeValue = realSession.getAttribute(attributeName);
		if (ClassUtils.isPrimitiveOrWrapper(attributeValue.getClass())) {
			//Attribute is primitive (immutable), so we don't need to re-set it.
			continue;
		}

		realSession.setAttribute(attributeName, attributeValue);
	}
}
 

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
  HttpSession session = req.getSession();
  if (req.getParameter("key") != null) {
    session.setAttribute(req.getParameter("key"), req.getParameter("value"));
    setNonSerializableValues(session);
  }

  PrintWriter writer = resp.getWriter();
  resp.setStatus(HttpServletResponse.SC_OK);
  resp.setContentType("text/plain");
  Enumeration<?> names = session.getAttributeNames();
  if (names.hasMoreElements()) {
    while (names.hasMoreElements()) {
      String name = (String) names.nextElement();
      writer.println(name + ": " + session.getAttribute(name));
    }
  } else {
    writer.println("No session attributes defined.");
  }
}
 

protected Iterator<String> getAttributeNames() {
    HttpSession session = getSession();
    return (session != null) ? new EnumerationIterator<String>(session.getAttributeNames()) : EMPTY_ITERATOR;
}
 

@Override
public Enumeration<String> getAttributeNamesInScope(int scope) {
	switch (scope) {
		case PAGE_SCOPE:
			return getAttributeNames();
		case REQUEST_SCOPE:
			return this.request.getAttributeNames();
		case SESSION_SCOPE:
			HttpSession session = this.request.getSession(false);
			return (session != null ? session.getAttributeNames() : Collections.emptyEnumeration());
		case APPLICATION_SCOPE:
			return this.servletContext.getAttributeNames();
		default:
			throw new IllegalArgumentException("Invalid scope: " + scope);
	}
}
 

/**
 * Returns the portlet session.
 * <p>
 * Note that since portlet request instance is created everytime the portlet
 * container receives an incoming request, the portlet session instance held
 * by the request instance is also re-created for each incoming request.
 * </p>
 */
@Override
public PortletSession getPortletSession(boolean create) {
   if (isDebug) {
      LOG.debug("Retrieving portlet session (create=" + create + ")");
   }

   if ((cachedPortletSession == null) || cachedPortletSession.isInvalidated()) {

      //
      // It is critical that we don't retrieve the portlet session until the
      // cross context dispatch has been completed. If we do then we risk
      // having a cached version which is invalid for the context within
      // which it exists.
      //
   
      if (portletConfig == null) {
         throw new IllegalStateException(EXCEPTIONS.getString("error.session.illegalState"));
      }
   
      //
      // We must make sure that if the session has been invalidated (perhaps
      // through setMaxIntervalTimeout()) and the underlying request
      // returns null that we no longer use the cached version.
      // We have to check (ourselves) if the session has exceeded its max
      // inactive interval. If so, we should invalidate the underlying
      // HttpSession and recreate a new one (if the create flag is set to
      // true) -- We just cannot depend on the implementation of
      // javax.servlet.http.HttpSession!
      //
   
      HttpSession httpSession = getServletRequest().getSession(create);
      if (httpSession != null) {
         // HttpSession is not null does NOT mean that it is valid.
         int maxInactiveInterval = httpSession.getMaxInactiveInterval();
         long lastAccesstime = httpSession.getLastAccessedTime();// lastAccesstime checks added for PLUTO-436
         if (maxInactiveInterval >= 0 && lastAccesstime > 0) { // < 0 => Never expires.
            long maxInactiveTime = httpSession.getMaxInactiveInterval() * 1000L;
            long currentInactiveTime = System.currentTimeMillis() - lastAccesstime;
            if (currentInactiveTime > maxInactiveTime) {
               if (isDebug) {
                  LOG.debug("The underlying HttpSession is expired and " + "should be invalidated.");
               }
               httpSession.invalidate();
               httpSession = getServletRequest().getSession(create);
               // Added for PLUTO-436
               // a cached portletSession is no longer useable.
               // a new one will be created below.
            }
         }
      }
   
      if (httpSession == null) {
         if (isDebug) {
            LOG.debug("The underlying HttpSession is not available: " + "no session will be returned.");
         }
         return null;
      }
   
      //
      // If we reach here, we are sure that the underlying HttpSession is
      // available. If we haven't created and cached a portlet session
      // instance, we will create and cache one now.
      //
   
      final ContainerServices containerServices = container.getContainerServices();
      final PortletEnvironmentService portletEnvironmentService = containerServices.getPortletEnvironmentService();

      cachedPortletSession = new CachedPortletSessionImpl(portletEnvironmentService.createPortletSession(
          portletConfig.getPortletContext(), getPortletWindow(), httpSession));

      if (CachedPortletSessionUtil.INVALIDATED_SESSIONS.containsKey(httpSession.getId())) {

         synchronized (httpSession) {
            Enumeration<String> attributeNames = httpSession.getAttributeNames();
            if (attributeNames.hasMoreElements()) {
               while (attributeNames.hasMoreElements()) {
                  String attributeName = attributeNames.nextElement();
                  httpSession.removeAttribute(attributeName);
               }
               CachedPortletSessionUtil.INVALIDATED_SESSIONS.remove(httpSession.getId());
            }
         }
      }
   }

   return cachedPortletSession;
}
 

/** 删除所有Key */
public static boolean cleanSession() {
    HttpSession httpSession = FxWebInterceptor.servletSession();
    if (httpSession == null) {
        return false;
    }
    Enumeration<String> attributeNames = httpSession.getAttributeNames();
    while (attributeNames.hasMoreElements()) {
        httpSession.removeAttribute(attributeNames.nextElement());
    }
    return true;
}
 

/**
 * Returns all session attributes in a map.
 *
 * @return all session attributes in a map.
 */
 static Map<String, Object> getSessionAttributes(){

      try{
          HttpSession session = RequestContext.getHttpRequest().getSession(true);
          Enumeration names = session.getAttributeNames();
          Map<String, Object> values = new HashMap<>();
          while (names.hasMoreElements()) {
              Object name = names.nextElement();
              values.put(name.toString(), session.getAttribute(name.toString()));
          }
          return values;
      }catch (IllegalStateException ex){
          // there is a possibility that the controller or filter wrote response  back directly,
          // which will invalidate the session, so we need to protect from  that.
          return new HashMap<>();
      }
}
 

@Override
public Enumeration<String> getAttributeNamesInScope(int scope) {
	switch (scope) {
		case PAGE_SCOPE:
			return getAttributeNames();
		case REQUEST_SCOPE:
			return this.request.getAttributeNames();
		case SESSION_SCOPE:
			HttpSession session = this.request.getSession(false);
			return (session != null ? session.getAttributeNames() : null);
		case APPLICATION_SCOPE:
			return this.servletContext.getAttributeNames();
		default:
			throw new IllegalArgumentException("Invalid scope: " + scope);
	}
}
 

/**
 * storeSessionAttributes() puts all of the attributes that are available from session.getAttribute()
 * into the sessionMap which will be stored in the cluster
 * @param s Session that is being stored
 * @param sessionMap the Map that will contain the attributes that will eventually stored in the cluster
 */
private void storeSessionAttributes(HttpSession s, Map<String, Serializable> sessionMap) {
    @SuppressWarnings("unchecked")
    Enumeration<String> keys = s.getAttributeNames();
    while (keys.hasMoreElements()) {
        String key = keys.nextElement();
        if (sessionAttributeBlacklist.contains(key)) {
            // skip processing on this key
            continue;
        }
        if (log.isDebugEnabled()) log.debug("attempting to store session attribute key [" + key + "] in cache");
        Object object = s.getAttribute(key);
        Serializable toStore = serializeSessionAttribute(object);
        // now store it if we were successful
        if (toStore != null) {
            sessionMap.put(key, toStore);
            if (log.isDebugEnabled()) log.debug("RebuildBreakdownServiceImpl.storeSession, putting key [" + key + "], class: [" + object.getClass().getName() + "], value: [" + object + "]");
        }
    }
}
 

/**
 * Retrieves all {@link VaadinSession}s which are stored in the given HTTP
 * session.
 *
 * @param httpSession
 *            the HTTP session
 * @return the found VaadinSessions
 */
public static Collection<VaadinSession> getAllSessions(
        HttpSession httpSession) {
    Set<VaadinSession> sessions = new HashSet<>();
    Enumeration<String> attributeNames = httpSession.getAttributeNames();

    while (attributeNames.hasMoreElements()) {
        String attributeName = attributeNames.nextElement();
        if (attributeName.startsWith(VaadinSession.class.getName() + ".")) {
            Object value = httpSession.getAttribute(attributeName);
            if (value instanceof VaadinSession) {
                sessions.add((VaadinSession) value);
            }
        }
    }
    return sessions;
}
 

@Override
public Enumeration<String> getAttributeNamesInScope(int scope) {
	switch (scope) {
		case PAGE_SCOPE:
			return getAttributeNames();
		case REQUEST_SCOPE:
			return this.request.getAttributeNames();
		case SESSION_SCOPE:
			HttpSession session = this.request.getSession(false);
			return (session != null ? session.getAttributeNames() : null);
		case APPLICATION_SCOPE:
			return this.servletContext.getAttributeNames();
		default:
			throw new IllegalArgumentException("Invalid scope: " + scope);
	}
}
 

@Override
public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response,
		WebSocketHandler wsHandler, Map<String, Object> attributes) throws Exception {

	HttpSession session = getSession(request);
	if (session != null) {
		if (isCopyHttpSessionId()) {
			attributes.put(HTTP_SESSION_ID_ATTR_NAME, session.getId());
		}
		Enumeration<String> names = session.getAttributeNames();
		while (names.hasMoreElements()) {
			String name = names.nextElement();
			if (isCopyAllAttributes() || getAttributeNames().contains(name)) {
				attributes.put(name, session.getAttribute(name));
			}
		}
	}
	return true;
}
 

/** sessionKeys */
public static List<String> sessionKeys() {
    HttpSession httpSession = FxWebInterceptor.servletSession();
    if (httpSession == null) {
        return Collections.emptyList();
    }
    Enumeration<String> attributeNames = httpSession.getAttributeNames();
    List<String> names = new ArrayList<>();
    while (attributeNames.hasMoreElements()) {
        names.add(attributeNames.nextElement());
    }
    return names;
}
 

protected static Map<ParticipantId, SessionUser> readAllSessionUser(HttpSession session) {

    Map<ParticipantId, SessionUser> map = new HashMap<ParticipantId, SessionUser>();

    Enumeration<String> names = session.getAttributeNames();
    while (names.hasMoreElements()) {
      String name = names.nextElement();
      if (!name.equals(OLD_USER_ID_ATTR))
        map.put(ParticipantId.ofUnsafe(name), (SessionUser) session.getAttribute(name));
    }

    return map;
  }
 

@Override
public void doGet(HttpServletRequest request,
                  HttpServletResponse response)
    throws IOException, ServletException
{
    response.setContentType("text/html");

    PrintWriter out = response.getWriter();
    out.println("<html>");
    out.println("<head>");

    String title = RB.getString("sessions.title");
    out.println("<title>" + title + "</title>");
    out.println("</head>");
    out.println("<body bgcolor=\"white\">");

    // img stuff not req'd for source code html showing
    // relative links everywhere!

    // XXX
    // making these absolute till we work out the
    // addition of a PathInfo issue

    out.println("<a href=\"../sessions.html\">");
    out.println("<img src=\"../images/code.gif\" height=24 " +
                "width=24 align=right border=0 alt=\"view code\"></a>");
    out.println("<a href=\"../index.html\">");
    out.println("<img src=\"../images/return.gif\" height=24 " +
                "width=24 align=right border=0 alt=\"return\"></a>");

    out.println("<h3>" + title + "</h3>");

    HttpSession session = request.getSession(true);
    out.println(RB.getString("sessions.id") + " " + session.getId());
    out.println("<br>");
    out.println(RB.getString("sessions.created") + " ");
    out.println(new Date(session.getCreationTime()) + "<br>");
    out.println(RB.getString("sessions.lastaccessed") + " ");
    out.println(new Date(session.getLastAccessedTime()));

    String dataName = request.getParameter("dataname");
    String dataValue = request.getParameter("datavalue");
    if (dataName != null && dataValue != null) {
        session.setAttribute(dataName, dataValue);
    }

    out.println("<P>");
    out.println(RB.getString("sessions.data") + "<br>");
    Enumeration<String> names = session.getAttributeNames();
    while (names.hasMoreElements()) {
        String name = names.nextElement();
        String value = session.getAttribute(name).toString();
        out.println(HTMLFilter.filter(name) + " = "
                    + HTMLFilter.filter(value) + "<br>");
    }

    out.println("<P>");
    out.print("<form action=\"");
    out.print(response.encodeURL("SessionExample"));
    out.print("\" ");
    out.println("method=POST>");
    out.println(RB.getString("sessions.dataname"));
    out.println("<input type=text size=20 name=dataname>");
    out.println("<br>");
    out.println(RB.getString("sessions.datavalue"));
    out.println("<input type=text size=20 name=datavalue>");
    out.println("<br>");
    out.println("<input type=submit>");
    out.println("</form>");

    out.println("<P>GET based form:<br>");
    out.print("<form action=\"");
    out.print(response.encodeURL("SessionExample"));
    out.print("\" ");
    out.println("method=GET>");
    out.println(RB.getString("sessions.dataname"));
    out.println("<input type=text size=20 name=dataname>");
    out.println("<br>");
    out.println(RB.getString("sessions.datavalue"));
    out.println("<input type=text size=20 name=datavalue>");
    out.println("<br>");
    out.println("<input type=submit>");
    out.println("</form>");

    out.print("<p><a href=\"");
    out.print(HTMLFilter.filter(response.encodeURL("SessionExample?dataname=foo&datavalue=bar")));
    out.println("\" >URL encoded </a>");

    out.println("</body>");
    out.println("</html>");
}
 

@Override
public void doGet(HttpServletRequest request,
                  HttpServletResponse response)
    throws IOException, ServletException
{
    response.setContentType("text/html");
    response.setCharacterEncoding("UTF-8");

    PrintWriter out = response.getWriter();
    out.println("<!DOCTYPE html><html>");
    out.println("<head>");
    out.println("<meta charset=\"UTF-8\" />");


    String title = RB.getString("sessions.title");
    out.println("<title>" + title + "</title>");
    out.println("</head>");
    out.println("<body bgcolor=\"white\">");

    // img stuff not req'd for source code html showing
    // relative links everywhere!

    // XXX
    // making these absolute till we work out the
    // addition of a PathInfo issue

    out.println("<a href=\"../sessions.html\">");
    out.println("<img src=\"../images/code.gif\" height=24 " +
                "width=24 align=right border=0 alt=\"view code\"></a>");
    out.println("<a href=\"../index.html\">");
    out.println("<img src=\"../images/return.gif\" height=24 " +
                "width=24 align=right border=0 alt=\"return\"></a>");

    out.println("<h3>" + title + "</h3>");

    HttpSession session = request.getSession(true);
    out.println(RB.getString("sessions.id") + " " + session.getId());
    out.println("<br>");
    out.println(RB.getString("sessions.created") + " ");
    out.println(new Date(session.getCreationTime()) + "<br>");
    out.println(RB.getString("sessions.lastaccessed") + " ");
    out.println(new Date(session.getLastAccessedTime()));

    String dataName = request.getParameter("dataname");
    String dataValue = request.getParameter("datavalue");
    if (dataName != null && dataValue != null) {
        session.setAttribute(dataName, dataValue);
    }

    out.println("<P>");
    out.println(RB.getString("sessions.data") + "<br>");
    Enumeration<String> names = session.getAttributeNames();
    while (names.hasMoreElements()) {
        String name = names.nextElement();
        String value = session.getAttribute(name).toString();
        out.println(HTMLFilter.filter(name) + " = "
                    + HTMLFilter.filter(value) + "<br>");
    }

    out.println("<P>");
    out.print("<form action=\"");
    out.print(response.encodeURL("SessionExample"));
    out.print("\" ");
    out.println("method=POST>");
    out.println(RB.getString("sessions.dataname"));
    out.println("<input type=text size=20 name=dataname>");
    out.println("<br>");
    out.println(RB.getString("sessions.datavalue"));
    out.println("<input type=text size=20 name=datavalue>");
    out.println("<br>");
    out.println("<input type=submit>");
    out.println("</form>");

    out.println("<P>GET based form:<br>");
    out.print("<form action=\"");
    out.print(response.encodeURL("SessionExample"));
    out.print("\" ");
    out.println("method=GET>");
    out.println(RB.getString("sessions.dataname"));
    out.println("<input type=text size=20 name=dataname>");
    out.println("<br>");
    out.println(RB.getString("sessions.datavalue"));
    out.println("<input type=text size=20 name=datavalue>");
    out.println("<br>");
    out.println("<input type=submit>");
    out.println("</form>");

    out.print("<p><a href=\"");
    out.print(HTMLFilter.filter(response.encodeURL("SessionExample?dataname=foo&datavalue=bar")));
    out.println("\" >URL encoded </a>");

    out.println("</body>");
    out.println("</html>");
}
 

@ApiOperation("获取Session中的值")
@RequestMapping(value = "/session/get", method = RequestMethod.GET)
public Map<String, Object> get(HttpSession session) {
    /**
     *
     {
     "org.springframework.security.web.csrf.HttpSessionCsrfTokenRepository.CSRF_TOKEN": {
     "headerName": "X-CSRF-TOKEN",
     "parameterName": "_csrf",
     "token": "b409d267-2f7f-4b48-ab7c-4aa50dfcdfe3"
     },
     "KAPTCHA_SESSION_KEY": "2a3y",
     "SPRING_SECURITY_CONTEXT": {
     "authentication": {
     "authenticated": true,
     "authorities": [
     {
     "authority": "ROLE_ADMIN"
     }
     ],
     "credentials": "",
     "details": {
     "remoteAddress": "0:0:0:0:0:0:0:1",
     "sessionId": "5b0f7167-a187-4323-8642-74f76542a5c7"
     },
     "name": "admin",
     "principal": {
     "accountNonExpired": true,
     "accountNonLocked": true,
     "authorities": [
     {
     "$ref": "$.SPRING_SECURITY_CONTEXT.authentication.authorities[0]"
     }
     ],
     "credentialsNonExpired": true,
     "enabled": true,
     "password": "",
     "username": "admin"
     }
     }
     }
     }
     */

    Map<String, Object> sessionMap = new HashMap<>();
    // 获取session中所有的键值
    Enumeration<String> enumeration = session.getAttributeNames();
    // 遍历enumeration中的
    while (enumeration.hasMoreElements()) {
        // 获取session键值
        String name = enumeration.nextElement();
        sessionMap.put(name, session.getAttribute(name));
    }
    return sessionMap;
}
 

private ResponseObject createLoginResponse(final HttpSession session) {
    final LoginCmdResponse response = new LoginCmdResponse();
    response.setTimeout(session.getMaxInactiveInterval());

    final String user_UUID = (String) session.getAttribute("user_UUID");
    response.setUserId(user_UUID);

    final String domain_UUID = (String) session.getAttribute("domain_UUID");
    response.setDomainId(domain_UUID);

    synchronized (session) {
        session.removeAttribute("user_UUID");
        session.removeAttribute("domain_UUID");
    }

    final Enumeration attrNames = session.getAttributeNames();
    if (attrNames != null) {
        while (attrNames.hasMoreElements()) {
            final String attrName = (String) attrNames.nextElement();
            final Object attrObj = session.getAttribute(attrName);
            if (ApiConstants.USERNAME.equalsIgnoreCase(attrName)) {
                response.setUsername(attrObj.toString());
            }
            if (ApiConstants.ACCOUNT.equalsIgnoreCase(attrName)) {
                response.setAccount(attrObj.toString());
            }
            if (ApiConstants.FIRSTNAME.equalsIgnoreCase(attrName)) {
                response.setFirstName(attrObj.toString());
            }
            if (ApiConstants.LASTNAME.equalsIgnoreCase(attrName)) {
                response.setLastName(attrObj.toString());
            }
            if (ApiConstants.TYPE.equalsIgnoreCase(attrName)) {
                response.setType((attrObj.toString()));
            }
            if (ApiConstants.TIMEZONE.equalsIgnoreCase(attrName)) {
                response.setTimeZone(attrObj.toString());
            }
            if (ApiConstants.REGISTERED.equalsIgnoreCase(attrName)) {
                response.setRegistered(attrObj.toString());
            }
            if (ApiConstants.SESSIONKEY.equalsIgnoreCase(attrName)) {
                response.setSessionKey(attrObj.toString());
            }
            if (ApiConstants.DOMAIN_NAME.equalsIgnoreCase(attrName)) {
                response.setDomainName(attrObj.toString());
            }
        }
    }
    response.setResponseName("loginresponse");
    return response;
}