spring-session SessionEventHttpSessionListenerAdapter 源码
spring-session SessionEventHttpSessionListenerAdapter 代码
文件路径：/spring-session-core/src/main/java/org/springframework/session/web/http/SessionEventHttpSessionListenerAdapter.java
/*
* Copyright 2014-2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.session.web.http;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import org.springframework.context.ApplicationListener;
import org.springframework.session.Session;
import org.springframework.session.events.AbstractSessionEvent;
import org.springframework.session.events.SessionCreatedEvent;
import org.springframework.session.events.SessionDestroyedEvent;
import org.springframework.web.context.ServletContextAware;
/**
* Receives {@link SessionDestroyedEvent} and {@link SessionCreatedEvent} and translates
* them into {@link HttpSessionEvent} and submits the {@link HttpSessionEvent} to every
* registered {@link HttpSessionListener}.
*
* @author Rob Winch
* @since 1.1
*/
public class SessionEventHttpSessionListenerAdapter
implements ApplicationListener<AbstractSessionEvent>, ServletContextAware {
private final List<HttpSessionListener> listeners;
private ServletContext context;
public SessionEventHttpSessionListenerAdapter(List<HttpSessionListener> listeners) {
super();
this.listeners = listeners;
}
/*
* @see org.springframework.context.ApplicationListener#onApplicationEvent(org.
* springframework.context.ApplicationEvent)
*/
@Override
public void onApplicationEvent(AbstractSessionEvent event) {
if (this.listeners.isEmpty()) {
return;
}
HttpSessionEvent httpSessionEvent = createHttpSessionEvent(event);
for (HttpSessionListener listener : this.listeners) {
if (event instanceof SessionDestroyedEvent) {
listener.sessionDestroyed(httpSessionEvent);
}
else if (event instanceof SessionCreatedEvent) {
listener.sessionCreated(httpSessionEvent);
}
}
}
private HttpSessionEvent createHttpSessionEvent(AbstractSessionEvent event) {
Session session = event.getSession();
HttpSession httpSession = new HttpSessionAdapter<>(session, this.context);
return new HttpSessionEvent(httpSession);
}
/*
* @see
* org.springframework.web.context.ServletContextAware#setServletContext(javax.servlet
* .ServletContext)
*/
@Override
public void setServletContext(ServletContext servletContext) {
this.context = servletContext;
}
}
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