CODEWITHSUNDEEP
springspring-mvcpostmodel-view-controllermodelattribute
user2554614
user2554614

Reputation: 41

Sprint MVC @ModelAttribute POST not working

I have this problem where I call API with get and it works fine while it gives empty object in case of POST. Below are the code snippets.

@Controller
@RequestMapping("/demo")
public class DemoController {
@RequestMapping(value = "/create")
    public ModelAndView createUser(@ModelAttribute User user) {
    ...
    ...
    }
}

GET: localhost:8080/demo/create.json?name=test&title=this works fine POST using form-data is not working. I am getting empty object.

public class User implements Serializable {
    private String name;
    private String title;

    ...
}

Upvotes: 1

Views: 5770

Answers (2)

user2554614
user2554614

Reputation: 41

Thanks for your kind replies. I was using Postman to validate my controller. I found I need to add multipart resolver.

Below is the line that fixed it.

<bean id="multipartResolver"
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>

Thanks!

Upvotes: 0

tshenolo
tshenolo

Reputation: 463

I would suggest the following code.

@RequestMapping(value = "/create", method = RequestMethod.GET)
public ModelAndView createUser() {

   ModelAndView modelAndView = new ModelAndView("/createuser.jsp");
   modelAndView.addObject("user", new User());
   return modelAndView;
}

@RequestMapping(value = "/create", method = RequestMethod.POST)
public ModelAndView createUserProcess(@ModelAttribute("user") User user,) {
  // save user to db

}

Just out of curiosity. Shouldn't you be displaying the form with createUser and processing it with createUserProcess? Also make sure your form has the following:

<form:form commandName="user" modelAttribute="user"> 


</form:form>

Upvotes: 1

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