我只是通过添加

SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);

即使我尝试添加显式限定符，我也不确定为什么我们应该这样做.现在代码看起来像

I am unsure why we should do this even when i tried adding explicit qualifier. and now the code looks like

public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {

        SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);

        @SuppressWarnings("unchecked")
        Map<String, String[]> parms = request.getParameterMap();

        if (parms.containsKey("token")) {