Converting a responseEntity to httpServletResponse with spring

Question

My controller method looks like this :

public void doLogin(HttpServletRequest request, HttpServletResponse response) throws IOException {

and I want to do this

ResponseEntity<String> responseEntity = restTemplate.postForEntity(testPrefix + "/login", map, String.class);

response = responseEntity;

or similar, basically make a restcall and return the HttpReponseEntity as the response n its enitirety

Can you please clarify. Are you saying that within the doLogin() method, you wish to call restTemplate.postForEntity() and then return that as the response from doLogin()? — Rob Lockwood-Blake
– Rob Lockwood-Blake, Commented Oct 23, 2013 at 11:35
An interesting question, but also my question is that let's say you have this converter from ResponseEntity to HttpServletResponse; what's the use case? — nobeh
– nobeh, Commented Oct 23, 2013 at 12:09
@nobeh don't ask, its not my decision. But I am returning ResponseEntity as the responsebody, seems to do the job — NimChimpsky
– NimChimpsky, Commented Oct 23, 2013 at 12:17
There is a use case when overriding certain spring handlers. For example when setting a custom exception handler in WebSecurityConfig with HttpSecurity.exceptionHandling().accessDeniedHandler(...) I have to override such a method. It would be nice to have some kind of translator for this instead of doing it manually. — Qw3ry
– Qw3ry, Commented Sep 1, 2017 at 9:59

Rob Lockwood-Blake · Accepted Answer · 2013-10-23 12:31:26Z

2

From updated comments I assume that you are wanting to return the result of the restTemplate.postForEntity() call from your Controller.

As shown by the Spring MVC documentation, ResponseEntity is a valid return type from a Controller method. So you can simply return the result of your restTemplate.postForEntity() call from the doLogin() method. As an example:

@Controller
public class MyController
{
     @AutoWired
     private RestTemplate restTemplate;

     @RequestMapping("/yourPath")
     public ResponseEntity<String> doLogin(HttpServletRequest request) throws IOException
     {
          return restTemplate.postForEntity(testPrefix + "/login", map, String.class);
     }
}

Spring MVC will take care of marshalling the ResponseEntity into the HTML response using a HTTPMessageConverter.

answered Oct 23, 2013 at 12:31

Rob Lockwood-Blake

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