PortletRequestAttributes.java 文件源码

/**
 * Exposes the {@link PortletSession} that we're wrapping.
 * @param allowCreate whether to allow creation of a new session if none exists yet
 */
protected final PortletSession getSession(boolean allowCreate) {
    if (isRequestActive()) {
        return this.request.getPortletSession(allowCreate);
    }
    else {
        // Access through stored session reference, if any...
        if (this.session == null && allowCreate) {
            throw new IllegalStateException(
                    "No session found and request already completed - cannot create new session!");
        }
        return this.session;
    }
}