好的，我没有在配置中找到任何属性来更改它。我深入研究了Spring会话的源代码，最后做了：

@Bean
public <S extends ExpiringSession> SessionRepositoryFilter<? extends ExpiringSession> springSessionRepositoryFilter(SessionRepository<S> sessionRepository, ServletContext servletContext) {
    SessionRepositoryFilter<S> sessionRepositoryFilter = new SessionRepositoryFilter<S>(sessionRepository);
    sessionRepositoryFilter.setServletContext(servletContext);
    CookieHttpSessionStrategy httpSessionStrategy = new CookieHttpSessionStrategy();
    httpSessionStrategy.setCookieName("MY_SESSION_NAME");
    sessionRepositoryFilter.setHttpSessionStrategy(httpSessionStrategy);
    return sessionRepositoryFilter;
}

“ SESSION”名称是CookieHttpSessionStrategy的源中的默认设置。