spring-session HttpSessionIdResolver 源码
spring-session HttpSessionIdResolver 代码
文件路径：/spring-session-core/src/main/java/org/springframework/session/web/http/HttpSessionIdResolver.java
/*
* Copyright 2014-2019 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.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Contract for session id resolution strategies. Allows for session id resolution through
* the request and for sending the session id or expiring the session through the
* response.
*
* @author Rob Winch
* @author Vedran Pavic
* @since 2.0.0
*/
public interface HttpSessionIdResolver {
/**
* Resolve the session ids associated with the provided {@link HttpServletRequest}.
* For example, the session id might come from a cookie or a request header.
* @param request the current request
* @return the session ids
*/
List<String> resolveSessionIds(HttpServletRequest request);
/**
* Send the given session id to the client. This method is invoked when a new session
* is created and should inform a client what the new session id is. For example, it
* might create a new cookie with the session id in it or set an HTTP response header
* with the value of the new session id.
* @param request the current request
* @param response the current response
* @param sessionId the session id
*/
void setSessionId(HttpServletRequest request, HttpServletResponse response, String sessionId);
/**
* Instruct the client to end the current session. This method is invoked when a
* session is invalidated and should inform a client that the session id is no longer
* valid. For example, it might remove a cookie with the session id in it or set an
* HTTP response header with an empty value indicating to the client to no longer
* submit that session id.
* @param request the current request
* @param response the current response
*/
void expireSession(HttpServletRequest request, HttpServletResponse response);
}
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