How to set response header in spring mvc

Question

I have a method in which i want to set response header cache-control and pragma :-

public String addUser(@Valid User user, BindingResult bindingResult)
{
            


        

Answer 1

If you want to set headers for every response for a controller you can use @ModelAttribute annotation.

@ModelAttribute
public void setVaryResponseHeader(HttpServletResponse response) {
    response.setHeader("Vary", "Accept");
}    

Answer 2

  public String addUser(@Valid User user, BindingResult bindingResult,HttpServletRequest request,HttpServletResponse response)
  {
       if(bindingResult.hasErrors())
       {
            bindingResult.getFieldError();
            return"edit";
      }
      response.setHeader("Cache-Control","no-cache,no-store,must-revalidate");
      response.setHeader("Pragma","no-cache");
      response.setDateHeader("Expires", 0);
      return "redirect:/welcome/profile/"+user.getName();
  }

Answer 3

You can manually set headers as follows.

imports:

import org.springframework.http.HttpHeaders;

code:

public ResponseEntity<Map<String, Object>> doSomething() {
   ...
HttpHeaders respHeaders = new HttpHeaders();
respHeaders.add("Pragma", "no-cache");
respHeaders.add("Cache-Control","no-cache,no-store,must-revalidate");
return new ResponseEntity<Map<String, Object>>(respHeaders, HttpStatus.OK);
}

Answer 4

Since Spring v. 4.1:

@RequestMapping("/something")
public ResponseEntity<MyClass> handle()
{
return ResponseEntity.status(HttpStatus.CREATED)
              .header("header", "value")
              .body(new MyClass());
}