I have a jsp page named product. I have send some message to jsp page from controller using ModelAndView. But it returns null. ModelAndView's Message is not set to jsp page. here is my controller code..
#RequestMapping(value = "/add", method = RequestMethod.POST)
public ModelAndView adduser(#ModelAttribute("productForm") Errors error, Model model) {
ModelAndView modelAndView = new ModelAndView("product");
System.out.println(modelAndView);
modelAndView.addObject("outMessage", "User Registration Success");
return new ModelAndView("redirect:/productSetup");
}
Please help me..
You should use Redirect Flash Model attributes when redirecting.
#RequestMapping(value = "/add", method = RequestMethod.POST)
public ModelAndView adduser(#ModelAttribute("productForm") Errors error, RedirectAttributes redir) {
ModelAndView modelAndView = new ModelAndView("product");
System.out.println(modelAndView);
redir.addFlashAttribute("outMessage", "User Registration Success");
return new ModelAndView("redirect:/productSetup");
}
Refer this for more info : https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/web/servlet/mvc/support/RedirectAttributes.html
Related
I am facing a problem regarding to the Httpsession that I implementing in the Spring MVC project.
First of all, after the user successfully login, I will take the Httpsession object in loginAuthentication controller and set attribute with the name and value I want. (Shown in following figure).
A.java controller file,
#RequestMapping(value="login-authentication", method = RequestMethod.POST)
public String authentication(#Valid #ModelAttribute("systemAccount") SystemAccount systemAccount,
BindingResult bindingResult, Model model, HttpServletRequest request){
if (bindingResult.hasErrors()) {
model.addAttribute(GenericConstant.MessageAttributeName.ERROR_MSG_NAME.toValue(), SystemMessage.SystemException.LOGIN_INCORRECT_USERNAME_PASSWORD.toValue());
model.addAttribute("systemAccount", new SystemAccount());
return "index";
}else {
if (systemAccountService.authenticate(systemAccount.getUsername(), systemAccount.getPassword()) != null &&
!"".equals(systemAccountService.authenticate(systemAccount.getUsername(), systemAccount.getPassword()))) {
SystemAccount dbSystemAccount = systemAccountService.authenticate(systemAccount.getUsername(), systemAccount.getPassword());
request.setAttribute(SessionAttribute.AttributeName.LOGIN_ACC_ID.toValue(),dbSystemAccount.getAccountID());
//check account role
if(dbSystemAccount.getCounterStaff()!= null && !"".equals(dbSystemAccount.getCounterStaff())){
CounterStaff counterStaff = dbSystemAccount.getCounterStaff();
request.setAttribute(SessionAttribute.AttributeName.LOGIN_ACC_NAME.toValue(), counterStaff.getStaffName());
request.setAttribute(SessionAttribute.AttributeName.LOGIN_ACC_ROLE.toValue(), GenericConstant.SystemRole.COUNTER_STAFF.toValue());
}else if(dbSystemAccount.getCustomer()!= null && !"".equals(dbSystemAccount.getCustomer())){
Customer customer = dbSystemAccount.getCustomer();
request.setAttribute(SessionAttribute.AttributeName.LOGIN_ACC_NAME.toValue(), customer.getCustomerName());
request.setAttribute(SessionAttribute.AttributeName.LOGIN_ACC_ROLE.toValue(), GenericConstant.SystemRole.CUSTOMER.toValue());
}else if(dbSystemAccount.getManager()!= null && !"".equals(dbSystemAccount.getManager())){
Manager manager = dbSystemAccount.getManager();
request.setAttribute(SessionAttribute.AttributeName.LOGIN_ACC_NAME.toValue(), manager.getManagerName());
request.setAttribute(SessionAttribute.AttributeName.LOGIN_ACC_ROLE.toValue(), GenericConstant.SystemRole.MANAGER.toValue());
}else if(dbSystemAccount.getDoctor()!= null && !"".equals(dbSystemAccount.getCounterStaff())){
Doctor doctor = dbSystemAccount.getDoctor();
request.setAttribute(SessionAttribute.AttributeName.LOGIN_ACC_NAME.toValue(), doctor.getDoctorName());
request.setAttribute(SessionAttribute.AttributeName.LOGIN_ACC_ROLE.toValue(), GenericConstant.SystemRole.DOCTOR.toValue());
}
request.setAttribute(SessionAttribute.AttributeName.LOGIN_DATE.toValue(), DateTimeUtil.getCurrentDate());
return "mainPage";
}else {
model.addAttribute(GenericConstant.MessageAttributeName.ERROR_MSG_NAME.toValue(), SystemMessage.SystemException.LOGIN_INCORRECT_USERNAME_PASSWORD);
model.addAttribute("systemAccount", new SystemAccount());
return "index";
}
}
}
After everything is ready, the controller will navigate user to the main page and the main page able to access all the defined variable without issue. (The following figure shown the controller that mapped with mainPage).
A.java controller file,
#RequestMapping(value = "/mainPage", method = RequestMethod.GET)
public String renderMainPageView(Model model, HttpServletRequest request) {
if(request.getAttribute(SessionAttribute.AttributeName.LOGIN_CHECK.toValue()) != null) {
model.addAttribute(SessionAttribute.AttributeName.LOGIN_ACC_ID.toValue(),
request.getAttribute(SessionAttribute.AttributeName.LOGIN_ACC_ID.toValue()));
model.addAttribute(SessionAttribute.AttributeName.LOGIN_ACC_NAME.toValue(),
request.getAttribute(SessionAttribute.AttributeName.LOGIN_ACC_NAME.toValue()));
model.addAttribute(SessionAttribute.AttributeName.LOGIN_ACC_ROLE.toValue(),
request.getAttribute(SessionAttribute.AttributeName.LOGIN_ACC_ROLE.toValue()));
model.addAttribute(SessionAttribute.AttributeName.LOGIN_DATE.toValue(),
request.getAttribute(SessionAttribute.AttributeName.LOGIN_DATE.toValue()));
return "mainPage";
}else {
model.addAttribute("systemAccount", new SystemAccount());
return "index";
}
}
In the navigation menu of main page, I click on the selection to direct me to add manager web page. (The following shown the link).
<a href="addManager" target="ifrm" >Add New Account</a>
The controller that mapped with the link (GET) able to detect. However, this controller (renderAddManagerView) does not recognised the HTTP session that I defined earlier when I try to access using the getAttribute method in the if condition. It keep showing null value (Shown in the following figure.
B.java controller file,
#RequestMapping(value = "/addManager", method = RequestMethod.GET)
public String renderAddManagerView(Model model, HttpSession httpSession) {
if(httpSession.getAttribute(SessionAttribute.AttributeName.LOGIN_CHECK.toValue()) != null) {
model.addAttribute("manager", new Manager());
model.addAttribute(FormSelectionValue.FormSelectionAttributeName.COUNTRY_SELECTION.toValue(), FormSelectionValue.COUNTRY_SELECTION_LIST);
model.addAttribute(FormSelectionValue.FormSelectionAttributeName.GENDER_SELECTION.toValue(), FormSelectionValue.GENDER_SELECTION_LIST);
return "addManager";
}else {
model.addAttribute("systemAccount", new SystemAccount());
return "index";
}
}
So I am not sure what is the issue for my code and there is no error message is displayed.
I have solved the issue by using the HttpServletRequest instead of HttpSession.
Now my session will not be loss even redirect or navigate to any pages in JSP.
Something like this:
#RequestMapping("/renderview", method = RequestMethod.GET)
#Controller
public class TestController {
#RequestMapping(method = RequestMethod.GET)
public String myMethod(HttpServletRequest request)
{
request.getSession().setAttribute("mySession", "XXX");
return "jspview";
}
}
Reference: Set session variable spring mvc 3
I have 2 methods that return a ModelAndView Object.
The first one gets the mapping from the browser and returns a modelandview that links to to an html file.
On that html file on the end I link a script tag to a spring root like this:
<!-- Calendar Js -->
<script type="text/javascript" src="../../../static/assets/vendor/netcorr/calendar/calendar.js"
th:src="#{/customer/web/wall/calendarItems(wallId=${wallId})}"></script>
In the controller, I have the second method that loads based on this call that I'm making just above:
/customer/web/wall/calendarItems(wallId=${wallId})
This method throws into the modelandview some objects that i need in the view.
This modelandview has root to a js file.
The problem is that the html does not load the js file that is called above.
Tried some solutions found on Stackoverflow, the solutions were to handle all of this in the mvdconfig controller.
And go throw the dependencies and make sure the dependencies are for Spring 4.
I m using Spring 1.5.9 and spring-boot-starter-thymeleaf
#GetMapping(value = "/customer/web/wall/calendar", params = {"wallId"})
public ModelAndView calendar(#RequestParam(value = "wallId") long wallId,
Authentication auth,
RedirectAttributes redirectAttributes){
ModelAndView modelAndView = new ModelAndView("/customer/wall/calendar");
modelAndView.addObject("wallId",wallId);
return modelAndView;
}
#GetMapping(value = "/customer/web/wall/calendarItems", params = {"wallId"})
public ModelAndView calendarItems(#RequestParam(value = "wallId") long wallId,
Authentication auth,
RedirectAttributes redirectAttributes){
User currentUser = (User) auth.getPrincipal();
Set<Long> wallIds = new HashSet<>();
wallIds.add(wallId);
PlaybookFilters playbookFilters = new PlaybookFilters();
playbookFilters.setCustomerId(currentUser.getCustomerId());
playbookFilters.setWallIds(wallIds);
List<Playbook> playbooks = playbookService.getPlaybooks(playbookFilters);
Date dateBegin = calendarService.getDateBegin();
Date dateEnd = calendarService.getDateEnd();
List<CalendarItem> calendarItems = calendarService.fetchPbiForPlaybooks(playbooks, dateBegin, dateEnd);
ArrayNode items = objectMapper.createArrayNode();
calendarItems.forEach(item -> items.add(item.toJsonNode()));
ModelAndView modelAndView = new ModelAndView("/customer/wall/calendarItems");
modelAndView.addObject("events", items);
return modelAndView;
}
I just used SpringBoot + WebFlux + thymeleaf to write the controller.
#RequestMapping(value = "/create", method = RequestMethod.GET)
public String createCityForm(Model model) {
model.addAttribute("city", new City());
model.addAttribute("action", "create");
return CITY_FORM_PATH_NAME;
}
#RequestMapping(value = "/create", method = RequestMethod.POST)
public String postCity(#ModelAttribute City city) {
cityService.saveCity(city);
return REDIRECT_TO_CITY_URL;
}
I witre thymeleaf page to receive the form, and redirect/return the get method page, But the browser give the 303 see other status.
Also, the delete resources also doesn't work.
The SEE_OTHER status is actually the default status of the RedirectView when invoked without explicitly specifying the HTTP code (like the ThymeleafReactiveViewResolver does).
If you want to override this status, return the RedirectView directly instead of letting Thymeleaf do it when it matches the redirect: pattern in the view name:
#RequestMapping(value = "/create", method = RequestMethod.GET)
public RedirectView createCityForm(Model model) {
model.addAttribute("city", new City());
model.addAttribute("action", "create");
return new RedirectView("/target_url", HttpStatus.MOVED_PERMANENTLY);
}
I am developing a web service using Spring MVC. When I referred to some examples on serving JSP pages in Controller I came across the following code:
#RequestMapping(value = "/login", method = RequestMethod.GET)
public ModelAndView showLogin(HttpServletRequest request, HttpServletResponse response) {
ModelAndView mav = new ModelAndView("login");
mav.addObject("login", new Login());
return mav;
}
Can someone tell me the reason for using addObject here. I hope "login" refers to the JSP page login.jsp. If so, what does new Login() refers to?
ModelAndView mav = new ModelAndView("login");
"login" indeed refers to the name of the JSP page. Returning this ModelAndView will direct the user to login.jsp.
mav.addObject("login", new Login());
adds an attribute to the Model in ModelAndView. This means you can access the Login object in your JSP page by accessing it through the attribute name "login", e.g. ${login}.
I'm using Spring MVC and I'm wondering is it possible to change URL when I return ModelAndView (the view is situated at the WEB-INF folder, so redirecting to it is not working) from the controller? I mean when I return it the URL is the previous one, and its obvious because dispatcher is working, not the redirecting.
#RequestMapping(value = "/login", method = RequestMethod.POST)
public ModelAndView authenticate(#RequestParam("login") String login, #RequestParam("password") String password) {
ModelAndView modelAndView = new ModelAndView();
User user = userDao.getUserByLogin(login);
if (user != null && user.getPassword().equals(password)) {
modelAndView.addObject("user", user);
modelAndView.setViewName("home");
}
return modelAndView;
}
So my home model is in WEB-INF folder, so return redirect:/home will not work for it. Yes, I can redirect it with return home, but in that case the URL will not change.
Use redirect:/url to some other method and return the view.
When redirecting the model attributes won't available in new method so to get that in redirected method set it in RedirectFlashAttributes.
Hope it helps.