public class MenuServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {     @Override     protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {         String method = request.getParameter("method");  ---（1）         if(method.equals("findAllProduct")){             ApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(getServletContext());             ProductService productService = (ProductService) context.getBean("productService");  ---（2）             out(response,productService.findAllProduct());         }     } }