我有一个Spring MVC控制器，想用Spring Method Security来保护它。

在以下示例中， 它可以工作 - @RequestMapping并@PreAuthorize注释相同的方法：

@Controller
public class MyController {

    @RequestMapping(value = "/test", method = {RequestMethod.POST, RequestMethod.GET})
    @PreAuthorize("isAuthenticated()")
    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {  
        return test(request, response);
    }

    public ModelAndView test(HttpServletRequest request, HttpServletResponse response) throws Exception {
        ...
    }

在此示例中， 它不起作用 - @RequestMapping并@PreAuthorize注释了不同的方法：

@Controller
public class MyController {

    @RequestMapping(value = "/test", method = {RequestMethod.POST, RequestMethod.GET})
    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {  
        return test(request, response);
    }

    @PreAuthorize("isAuthenticated()")
    public ModelAndView test(HttpServletRequest request, HttpServletResponse response) throws Exception {
        ...
    }

这种奇怪行为的原因可能是什么？