<form:form modelAttribute="test" id="testUpdateForm" method="post">
            <c:if test="${not empty message}">
                <div id="message" class="${message.type}">${message.message}*</div>
            </c:if>
            <form:label path="testName">${labelTestName}</form:label>
            <form:input path="testName"/>
            <div>
......

@PreAuthorize("isAuthenticated()")
    @RequestMapping(value = "/id", params = "form", method = {RequestMethod.POST})
    public String update(Test test, BindingResult bindingResult, Model uiModel, HttpServletRequest request
            , RedirectAttributes redirectAttributes, Locale locale){......

@PreAuthorize("isAuthenticated()")
    @RequestMapping(value = "/id", params = "form", method = {RequestMethod.POST})
    public String update(Test test, BindingResult bindingResult, Model uiModel, HttpServletRequest request
            , RedirectAttributes redirectAttributes, Locale locale){
        log.info("Updating test");
        if(bindingResult.hasErrors()){
            uiModel.addAttribute("message", new Message("error", messageSource.getMessage("test_save_fail"
                    , new Object[]{}, locale)));
            uiModel.addAttribute("test",test);
            return "test/update";
        }

@RequestMapping(value="/test", method = {[color=red]RequestMethod.GET[/color]})//<--- вот тут недоглядел
public class TestController {
   ..............
    @PreAuthorize("isAuthenticated()")
    @RequestMapping(value = "/list", method = {RequestMethod.GET})
    public String userTestList(Model ui){
       .......
        return "test/list";
    }
    @PreAuthorize("isAuthenticated()")
    @RequestMapping(value = "/{id}", method = {RequestMethod.GET})
    public String show(@PathVariable("id") Integer id, Model uiModel){
        ...........
        return "test/show";
            }
 @PreAuthorize("isAuthenticated()")
    @RequestMapping(value = "/{id}", params = "form", method = {[color=red]RequestMethod.POST[/color]})
    public String update(Test test, BindingResult bindingResult, Model uiModel, HttpServletRequest request
            , RedirectAttributes redirectAttributes, Locale locale){
       ..................
            return "test/update";
        }
        uiModel.asMap().clear();
        redirectAttributes.addFlashAttribute("message", new Message("success",messageSource.getMessage("test_save_success"
                , new Object[]{}, locale)));
        testManager.saveTest(test);
        return "redirect:/test/"+ UrlUtil.encodeUrlPathSegment(test.getId().toString(),
                request);
    }

    @RequestMapping(value="/{id}", params ="form", method = {RequestMethod.GET})
    public String updateForm(@PathVariable("id") Integer id, Model uiModel) {
        ...........
        return "test/update";
    }

}

@RequestMapping(value="/test"})
public class TestController {