问java.lang.AssertionError:状态expected:<200>但was:<405>

EN

@RequestMapping(value = "/addEvent", method = RequestMethod.POST)
    public String addEvent(Model model,
            @Valid @ModelAttribute("myEvent") Event event,
            BindingResult result, RedirectAttributes redirectAttributes,
            @RequestParam(required = true) Integer selectedEventTypeId,
            @RequestParam(required = true) Integer selectedEventStatusId) {

        if (result.getErrorCount() > 1 ){
            return "eventDetailsAdd";
        }
        eventService.addEvent(event, selectedEventTypeId, selectedEventStatusId);
        redirectAttributes.addAttribute("idEvent", event.getId());
        redirectAttributes.addAttribute("message", "added correctly at " + new Date() );
        return "redirect:eventDetails";
    }

MockHttpServletRequestBuilder request = MockMvcRequestBuilders
                .get("/addEvent");
        ResultActions result = mockMvc.perform(request);

        result.andExpect(MockMvcResultMatchers.status().isOk());

java.lang.AssertionError: Status expected:<200> but was:<405>
    at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:60)
    at org.springframework.test.util.AssertionErrors.assertEquals(AssertionErrors.java:89)
    at org.springframework.test.web.servlet.result.StatusResultMatchers$5.match(StatusResultMatchers.java:549)
    ...

MockHttpServletRequestBuilder request = MockMvcRequestBuilders
                .get("/addEvent");
        request.param("selectedEventTypeId", "1");
        request.param("selectedEventStatusId", "1");

        ResultActions result = mockMvc.perform(request);

        result.andExpect(MockMvcResultMatchers.status().isOk());
        result.andExpect(MockMvcResultMatchers.forwardedUrl("eventDetailsAdd"));

   request.param("selectedEventTypeId", "1");
   request.param("selectedEventStatusId", "1");