springmvc 原生servlet支持

/**
     * 可以使用 Serlvet 原生的 API 作为目标方法的参数 具体支持以下类型
     * 
     * HttpServletRequest 
     * HttpServletResponse 
     * HttpSession
     * java.security.Principal 
     * Locale InputStream 
     * OutputStream 
     * Reader 
     * Writer
     * @throws IOException 
     */
    @RequestMapping("/testServletAPI")
    public void testServletAPI(HttpServletRequest request,
            HttpServletResponse response, Writer out) throws IOException {
        System.out.println("testServletAPI, " + request + ", " + response);
        out.write("hello springmvc");
//        return SUCCESS;
    }