javax.servlet.http.HttpSessionBindingEvent Java Examples

/**
 * Serialize the attributes of this session into an object that can be
 * turned into a byte array with standard Java serialization.
 * @return a representation of this session's serialized state
 */
public Serializable serializeState() {
	HashMap<String, Serializable> state = new HashMap<>();
	for (Iterator<Map.Entry<String, Object>> it = this.attributes.entrySet().iterator(); it.hasNext();) {
		Map.Entry<String, Object> entry = it.next();
		String name = entry.getKey();
		Object value = entry.getValue();
		it.remove();
		if (value instanceof Serializable) {
			state.put(name, (Serializable) value);
		}
		else {
			// Not serializable... Servlet containers usually automatically
			// unbind the attribute in this case.
			if (value instanceof HttpSessionBindingListener) {
				((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
			}
		}
	}
	return state;
}
 

/**
 * Serialize the attributes of this session into an object that can be
 * turned into a byte array with standard Java serialization.
 * @return a representation of this session's serialized state
 */
public Serializable serializeState() {
	HashMap<String, Serializable> state = new HashMap<>();
	for (Iterator<Map.Entry<String, Object>> it = this.attributes.entrySet().iterator(); it.hasNext();) {
		Map.Entry<String, Object> entry = it.next();
		String name = entry.getKey();
		Object value = entry.getValue();
		it.remove();
		if (value instanceof Serializable) {
			state.put(name, (Serializable) value);
		}
		else {
			// Not serializable... Servlet containers usually automatically
			// unbind the attribute in this case.
			if (value instanceof HttpSessionBindingListener) {
				((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
			}
		}
	}
	return state;
}
 

/**
 * HttpSessionAttributeListener callback; processes the replacement of an attribute in an HttpSession.
 *
 * NOTE: Callback is not made against an HttpFlexSession associated with a request
 * handling thread.
 * @param event the HttpSessionBindingEvent
 */
public void attributeReplaced(HttpSessionBindingEvent event)
{
    if (!event.getName().equals(SESSION_ATTRIBUTE))
    {
        // Accessing flexSession via map because it may have already been unbound from httpSession.
        Map httpSessionToFlexSessionMap = getHttpSessionToFlexSessionMap(event.getSession());
        HttpFlexSession flexSession = (HttpFlexSession)httpSessionToFlexSessionMap.get(event.getSession().getId());
        if (flexSession != null)
        {
            String name = event.getName();
            Object value = event.getValue();
            Object newValue = flexSession.getAttribute(name);
            flexSession.notifyAttributeUnbound(name, value);
            flexSession.notifyAttributeReplaced(name, value);
            flexSession.notifyAttributeBound(name, newValue);
        }
    }
}
 

@Override
public void attributeUpdated(final Session session, final String name, final Object value, final Object old) {
    if (name.startsWith(IO_UNDERTOW)) {
        return;
    }
    final HttpSessionImpl httpSession = SecurityActions.forSession(session, servletContext, false);
    if (old != value) {
        if (old instanceof HttpSessionBindingListener) {
            ((HttpSessionBindingListener) old).valueUnbound(new HttpSessionBindingEvent(httpSession, name, old));
        }
        applicationListeners.httpSessionAttributeReplaced(httpSession, name, old);
    }
    if (value instanceof HttpSessionBindingListener) {
        ((HttpSessionBindingListener) value).valueBound(new HttpSessionBindingEvent(httpSession, name, value));
    }
}
 

/**
 * Serialize the attributes of this session into an object that can
 * be turned into a byte array with standard Java serialization.
 * @return a representation of this session's serialized state
 */
public Serializable serializeState() {
	HashMap state = new HashMap();
	for (Iterator it = this.attributes.entrySet().iterator(); it.hasNext();) {
		Map.Entry entry = (Map.Entry) it.next();
		String name = (String) entry.getKey();
		Object value = entry.getValue();
		it.remove();
		if (value instanceof Serializable) {
			state.put(name, value);
		}
		else {
			// Not serializable... Servlet containers usually automatically
			// unbind the attribute in this case.
			if (value instanceof HttpSessionBindingListener) {
				((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
			}
		}
	}
	return state;
}
 

@Override
public void setAttribute(String name, @Nullable Object value) {
	assertIsValid();
	Assert.notNull(name, "Attribute name must not be null");
	if (value != null) {
		Object oldValue = this.attributes.put(name, value);
		if (value != oldValue) {
			if (oldValue instanceof HttpSessionBindingListener) {
				((HttpSessionBindingListener) oldValue).valueUnbound(new HttpSessionBindingEvent(this, name, oldValue));
			}
			if (value instanceof HttpSessionBindingListener) {
				((HttpSessionBindingListener) value).valueBound(new HttpSessionBindingEvent(this, name, value));
			}
		}
	}
	else {
		removeAttribute(name);
	}
}
 

@Test
public void testValueUnbound() {
    MockVaadinSession vaadinSession = new MockVaadinSession(mockService);

    vaadinSession.valueUnbound(
            EasyMock.createMock(HttpSessionBindingEvent.class));
    org.junit.Assert.assertEquals(
            "'valueUnbound' method doesn't call 'close' for the session", 1,
            vaadinSession.getCloseCount());

    vaadinSession.valueUnbound(
            EasyMock.createMock(HttpSessionBindingEvent.class));

    org.junit.Assert.assertEquals(
            "'valueUnbound' method may not call 'close' "
                    + "method for closing session",
            1, vaadinSession.getCloseCount());
}
 

@Test
public void testSessionDestroyed() {
  HttpSessionBindingListener bindingListener = mock(HttpSessionBindingListener.class);
  String dummy = "dummy";
  when(session.getAttribute("binding")).thenReturn(bindingListener);
  when(session.getAttribute("attribute")).thenReturn(dummy);
  when(session.getAttributeNamesWithValues()).thenReturn(Arrays.asList("binding", "attribute"));
  HttpSessionListener listener = mock(HttpSessionListener.class);
  descriptor.addHttpSessionListener(listener);
  notifier.sessionDestroyed(session, false);
  verify(bindingListener).valueUnbound(any(HttpSessionBindingEvent.class));
  verify(listener).sessionDestroyed(any(HttpSessionEvent.class));
  HttpSessionListener listener2 = mock(HttpSessionListener.class);
  HttpSessionBindingListener bindingListener2 = mock(HttpSessionBindingListener.class);
  when(session.getAttribute("binding2")).thenReturn(bindingListener2);
  when(session.getAttributeNamesWithValues()).thenReturn(Arrays.asList("binding", "attribute", "binding2"));
  descriptor.addHttpSessionListener(listener2);
  notifier.sessionDestroyed(session, false);
  verify(listener, times(2)).sessionDestroyed(any(HttpSessionEvent.class));
  verify(bindingListener, times(2)).valueUnbound(any(HttpSessionBindingEvent.class));
  verify(bindingListener2).valueUnbound(any(HttpSessionBindingEvent.class));
  verify(listener2).sessionDestroyed(any(HttpSessionEvent.class));
}
 

/**
 * Serialize the attributes of this session into an object that can be
 * turned into a byte array with standard Java serialization.
 *
 * @return a representation of this session's serialized state
 */
public Serializable serializeState() {
	HashMap<String, Serializable> state = new HashMap<String, Serializable>();
	for (Iterator<Map.Entry<String, Object>> it = this.attributes.entrySet().iterator(); it.hasNext();) {
		Map.Entry<String, Object> entry = it.next();
		String name = entry.getKey();
		Object value = entry.getValue();
		it.remove();
		if (value instanceof Serializable) {
			state.put(name, (Serializable) value);
		}
		else {
			// Not serializable... Servlet containers usually automatically
			// unbind the attribute in this case.
			if (value instanceof HttpSessionBindingListener) {
				((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
			}
		}
	}
	return state;
}
 

@Override
public void attributeAdded(HttpSessionBindingEvent event) {
	String name = event.getName();

	// 登录
	if (name.equals("personInfo")) {

		PersonInfo personInfo = (PersonInfo) event.getValue();

		if (map.get(personInfo.getAccount()) != null) {

			// map 中有记录，表明该帐号在其他机器上登录过，将以前的登录失效
			HttpSession session = map.get(personInfo.getAccount());
			PersonInfo oldPersonInfo = (PersonInfo) session.getAttribute("personInfo");

			logger.debug("帐号" + oldPersonInfo.getAccount() + "在" + oldPersonInfo.getIp() + "已经登录，该登录将被迫下线。");

			session.removeAttribute("personInfo");
			session.setAttribute("msg", "您的帐号已经在其他机器上登录，您被迫下线。");
		}

		// 将session以用户名为索引，放入map中
		map.put(personInfo.getAccount(), event.getSession());
		logger.debug("帐号" + personInfo.getAccount() + "在" + personInfo.getIp() + "登录。");
	}
}
 

@Override
public void removeAttribute(String name) {
    if (attributes != null) {
        Object value = attributes.get(name);
        if (value != null && value instanceof HttpSessionBindingListener) {
            ((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
        }
        attributes.remove(name);
    }
}
 

/**
*/
  @Override
  public void valueBound(HttpSessionBindingEvent be) {
      if (log.isDebugEnabled()) {
          log.debug("Opened UserSession:" + this.toString());
      }
  }
 

/**
 * Record the fact that a servlet context attribute was removed.
 *
 * @param event
 *            The session attribute event
 */
@Override
public void attributeRemoved(HttpSessionBindingEvent event) {

    log("attributeRemoved('" + event.getSession().getId() + "', '"
            + event.getName() + "', '" + event.getValue() + "')");

}
 

@Override
public void setAttribute(String name, Object value) {
    if (attributes == null) attributes = new ConcurrentHashMap<String, Object>();

    attributes.put(name, value);

    if (value != null && value instanceof HttpSessionBindingListener) {
        ((HttpSessionBindingListener) value).valueBound(new HttpSessionBindingEvent(this, name, value));
    }

}
 

@Override
public void attributeRemoved(HttpSessionBindingEvent event) {
	try {
		this.clearLoginUser(event);
	} catch (Exception e) {
		e.printStackTrace();
	}	
}
 

/**
 * Attributed removed.
 *
 * @param session the HTTP session.
 * @param name the name.
 */
@Override
public void attributeRemoved(HttpSession session, String name) {
    attributeListeners.stream().forEach((listener) -> {
        listener.attributeRemoved(new HttpSessionBindingEvent(session, name));
    });
}
 

@Override
public void valueUnbound(HttpSessionBindingEvent event)
{
	if (STORING_TOUCHED_PAGES.get())
	{
		// triggered by #storeTouchedPages(), so do not remove the data
		return;
	}
	clear();
}
 

/**
 * Clear all of this session's attributes.
 */
public void clearAttributes() {
	for (Iterator<Map.Entry<String, Object>> it = this.attributes.entrySet().iterator(); it.hasNext();) {
		Map.Entry<String, Object> entry = it.next();
		String name = entry.getKey();
		Object value = entry.getValue();
		it.remove();
		if (value instanceof HttpSessionBindingListener) {
			((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
		}
	}
}
 

/**
 * From javax.servlet.http.SessionBindingListener
 */
@Override
public void valueUnbound(HttpSessionBindingEvent e) {
    if (logger.isDebugEnabled()) {
        logger.debug("Received value unbound event on " + e.getName() + " from session " + e.getSession().getId());
    }
    this.stop();
}
 

@Override
public void setAttribute(String name, Object value) {
	if (value != null) {
		this.attributes.put(name, value);
		if (value instanceof HttpSessionBindingListener) {
			((HttpSessionBindingListener) value).valueBound(new HttpSessionBindingEvent(this, name, value));
		}
	}
	else {
		removeAttribute(name);
	}
}
 

@Override
public void valueUnbound(HttpSessionBindingEvent event) {
    if (sessionIdClientIp != null) {
        String clientIp = sessionIdClientIp.remove(event.getSession().getId());
        if (clientIp != null) {
            clientIpSessionId.remove(clientIp);
        }
    }
}
 

@Test
public void removeAttributeShuoldInvokeValueUnboundForHttpSessionBindingListeners() throws Exception {
    String attrName = "attributeName";
    when(session.remove(attrName)).thenReturn(sessionBindingListenerObject);
    vertxWrappedSession.removeAttribute(attrName);
    ArgumentCaptor<HttpSessionBindingEvent> sessionBindingEventCaptor = ArgumentCaptor.forClass(HttpSessionBindingEvent.class);
    verify(sessionBindingListenerObject).valueUnbound(sessionBindingEventCaptor.capture());
    assertHttpSessionBindingEvent(attrName, sessionBindingEventCaptor.getValue());
}
 

/**
 * Clear all of this session's attributes.
 */
public void clearAttributes() {
    for (Iterator it = this.attributes.entrySet().iterator(); it.hasNext();) {
        Map.Entry entry = (Map.Entry) it.next();
        String name = (String) entry.getKey();
        Object value = entry.getValue();
        it.remove();
        if (value instanceof HttpSessionBindingListener) {
            ((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
        }
    }
}
 

/**
 * Record the fact that a servlet context attribute was added.
 *
 * @param event
 *            The session attribute event
 */
@Override
public void attributeAdded(HttpSessionBindingEvent event) {

    log("attributeAdded('" + event.getSession().getId() + "', '"
            + event.getName() + "', '" + event.getValue() + "')");

}
 

protected void doClearAttributes(Map<String, Object> attributes) {
	for (Iterator<Map.Entry<String, Object>> it = attributes.entrySet().iterator(); it.hasNext();) {
		Map.Entry<String, Object> entry = it.next();
		String name = entry.getKey();
		Object value = entry.getValue();
		it.remove();
		if (value instanceof HttpSessionBindingListener) {
			((HttpSessionBindingListener) value).valueUnbound(
					new HttpSessionBindingEvent(new MockHttpSession(), name, value));
		}
	}
}
 

@Override
public void setAttribute(String name, Object value) {
	assertIsValid();
	Assert.notNull(name, "Attribute name must not be null");
	if (value != null) {
		this.attributes.put(name, value);
		if (value instanceof HttpSessionBindingListener) {
			((HttpSessionBindingListener) value).valueBound(new HttpSessionBindingEvent(this, name, value));
		}
	}
	else {
		removeAttribute(name);
	}
}
 

protected void doClearAttributes(Map<String, Object> attributes) {
	for (Iterator<Map.Entry<String, Object>> it = attributes.entrySet().iterator(); it.hasNext();) {
		Map.Entry<String, Object> entry = it.next();
		String name = entry.getKey();
		Object value = entry.getValue();
		it.remove();
		if (value instanceof HttpSessionBindingListener) {
			((HttpSessionBindingListener) value).valueUnbound(
					new HttpSessionBindingEvent(new MockHttpSession(), name, value));
		}
	}
}
 

/**
 * Clear all of this session's attributes.
 */
public void clearAttributes() {
	for (Iterator<Map.Entry<String, Object>> it = this.attributes.entrySet().iterator(); it.hasNext();) {
		Map.Entry<String, Object> entry = it.next();
		String name = entry.getKey();
		Object value = entry.getValue();
		it.remove();
		if (value instanceof HttpSessionBindingListener) {
			((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
		}
	}
}
 

@Override
public void removeAttribute(String name) {
	assertIsValid();
	Assert.notNull(name, "Attribute name must not be null");
	Object value = this.attributes.remove(name);
	if (value instanceof HttpSessionBindingListener) {
		((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
	}
}
 

/**
 * When this object is unbound from the session (including upon session
 * expiry) the files that have been added to the ArrayList are iterated
 * and deleted.
 *
 * @param event  the session unbind event.
 */
@Override
public void valueUnbound(HttpSessionBindingEvent event) {
    Iterator iter = this.chartNames.listIterator();
    while (iter.hasNext()) {
        String filename = (String) iter.next();
        File file = new File(
            System.getProperty("java.io.tmpdir"), filename
        );
        if (file.exists()) {
            file.delete();
        }
    }
}