/**
     * 可以使用 Serlvet 原生的 API 作為目標方法的引數 具體支援以下型別
     * 
     * 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;
    }