CODEWITHSUNDEEP
spring-mvc
Danish
Danish

Reputation: 913

Add User Object to every request and response

What can be the approach to append the user object in every request and response in Spring MVC 3. So that on the Jsp if I do the request.getAttribute("user"), then I should be able to get the User Object.

Thanks to all.

Upvotes: 1

Views: 2095

Answers (2)

Alexey
Alexey

Reputation: 2592

User object in a session attribute

You can put your User object in a session attribute:

@Controller
public class MyMvcController
{
    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String hello(HttpServletRequest request)
    {

        User user = ... // initialise your User object here
        request.getSession().setAttribute("user", user);

        return "hello";
    }
}

If you put the User object in a session attribute, it will be stored on the server between HTTP requests, so you need to initialize it only once somewhere in your application.

In JSP, you can access the User object with session.getAttribute("user"), or with EL: ${user.id}, ${user.name}...

User object in an MVC model

Alternatively, if you do not want to store your object in the session attributes, you can create a new User object in every request and put it in your MVC model as described in this answer:

@ControllerAdvice
public class GlobalControllerAdvice {

  @ModelAttribute
  public void myMethod(Model model) {

    User user = // initialise your User object here
    model.addAttribute("user", user);

  }
}

See the original answer for details.

In JSP, you can access the User object with request.getAttribute("user"), or with EL: ${user.id}, ${user.name}...

Upvotes: 2

Shoaib Chikate
Shoaib Chikate

Reputation: 8973

You want User object in every request and response.

  @Controller
  @SessionAttribute("user")
  public class UserController{

  }

JSP code:

<form:form modelAttribute="user">...</form:form>

You can use that user object as you want:

${user.name}  //equivalent to request.getAttribute("user").getName();
${user.age}

Upvotes: 0

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