NoHttpSessionFilter.java 文件源码

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
    filterChain.doFilter(new HttpServletRequestWrapper((HttpServletRequest) request) {
        @Override
        public HttpSession getSession() {
            throw new UnsupportedOperationException("getSession() is not supported");
        }

        @Override
        public HttpSession getSession(boolean create) {
            if (create) {
                throw new UnsupportedOperationException("getSession(true) is not supported");
            }
            return null;
        }
    }, response);
}