java.lang.reflect.Method £¨java·´Éä»úÖÆ£©

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public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        @SuppressWarnings("unchecked")
        Map<Object, Object> requestData = (Map<Object, Object>) httpRequest.getAttribute("requestData");
        String methodName = (String) requestData.get(METHOD);
        //»ñµÃbeanµÄÅäÖÃ
        String beanName = mapProtocol.get(methodName).get(BEAN);
        // È¥³ý.·ûºÅ
        methodName = getMethod(methodName);
        //´Óspring contextÖлñµÃbean
        Object instance = getContext(filterConfig).getBean(beanName);
        Class<? extends Object> clazz = instance.getClass();
        Object resultContent = null;
        try {
            Method method = clazz
                    .getDeclaredMethod(methodName, getParamTypes());
            Map params = removeSysParams(requestData);
            resultContent = method.invoke(instance, params);
        } catch (InvocationTargetException e) {
            if (e.getTargetExce