如何配置spring-session以在一个应用程序中支持HeaderHttpSessionStrategy和CookieHttpSessionStrategy？

Question

我有一个项目要支持android，ios，pc网络。我尝试使用https://github.com/spring-projects/spring-session，它可以只在应用程序中配置以支持HttpSession和rest令牌吗？

如果可以，我如何配置它？

Answer 1

对我来说起作用的一件事是使用Cookie和Header实现中的代码重新实现***HttpSessionStrategy。

你可以在这里看到这些类的具体实现：

• https://github.com/spring-projects/spring-session/blob/master/spring-session/src/main/java/org/springframework/session/web/http/HeaderHttpSessionStrategy.java
• https://raw.githubusercontent.com/spring-projects/spring-session/master/spring-session/src/main/java/org/springframework/session/web/http/CookieHttpSessionStrategy.java

所以getRequestedSessionId变成了：

public String getRequestedSessionId(HttpServletRequest request) {
        // header part
        String sessionId = request.getHeader(headerName);
        if(sessionId != null && !sessionId.isEmpty())
            return sessionId;

        // cookie part
        Map<String,String> sessionIds = getSessionIds(request);
        String sessionAlias = getCurrentSessionAlias(request);
        return sessionIds.get(sessionAlias);
    }

onInvalidateSession变成：

public void onInvalidateSession(HttpServletRequest request, HttpServletResponse response) {
    // header part
    response.setHeader(headerName, "");

    // cookie part
    Map<String,String> sessionIds = getSessionIds(request);
    String requestedAlias = getCurrentSessionAlias(request);
    sessionIds.remove(requestedAlias);

    Cookie sessionCookie = createSessionCookie(request, sessionIds);
    response.addCookie(sessionCookie);
}

onNewSession变成：

public void onNewSession(Session session, HttpServletRequest request, HttpServletResponse response) {
        // header part
        response.setHeader(headerName, session.getId());

        // cookie part
        Set<String> sessionIdsWritten = getSessionIdsWritten(request);
        if(sessionIdsWritten.contains(session.getId())) {
            return;
        }
        sessionIdsWritten.add(session.getId());

        Map<String,String> sessionIds = getSessionIds(request);
        String sessionAlias = getCurrentSessionAlias(request);
        sessionIds.put(sessionAlias, session.getId());
        Cookie sessionCookie = createSessionCookie(request, sessionIds);
        response.addCookie(sessionCookie);
    }

我在生产中将其用于浏览器/移动REST API，它满足了我的所有需求。

Answer 2

您可以利用spring的BeanFactoryPostProcessor重写postProcessAfterInitialization()来配置SessionRepositoryFilter的httpSessionStrategy，方法是在spring初始化后调用它的setHttpSessionStrategy()方法。