Styjun

I try to call the address in the controller using RestTemplate and as a result I want to get OK or NOT FOUND status
I do so in this controller

@GetMapping(value = "/thanks")
public ModelAndView confirmAccount(
 @RequestParam String token,
 UriComponentsBuilder uriComponentsBuilder
) 
 RestTemplate restTemplate = new RestTemplate();
 HttpEntity<Object> entity = new HttpEntity<>(new HttpHeaders());

 UriComponents uriComponents
 = uriComponentsBuilder.path("/register/token/token").buildAndExpand(token);

 ResponseEntity<Boolean> response = restTemplate
 .exchange(uriComponents.toUri(),
 HttpMethod.PUT,
 entity,
 Boolean.class);

 return response.getStatusCode().toString().equals("200")
 ? new ModelAndView("redirect:/signIn") : new ModelAndView("tokenNotFound");

I call this address of the controller.

@RequestMapping(value = "/register/token/token", method = RequestMethod.PUT)
public
HttpEntity<Boolean> confirmAccount(
 @PathVariable String token
) 
 Optional<User> userOptional = userService.findByActivationToken(token);

 if(userOptional.isPresent()) 
 User user = userOptional.get();

 user.setActivationToken(null);
 user.setEnabled(true);

 userService.saveUser(user);
 else 
 return ResponseEntity.notFound().build();
 

 return ResponseEntity.ok(true);

As a result, she throws me out in the console

org.springframework.web.client.HttpClientErrorException: 404 null
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:63) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:700) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:653) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:628) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:549) ~[spring-web-4.3.10.RELEASE.jar:4.3.10.RELEASE]
at com.service.app.controller.RegisterController.confirmAccount(RegisterController.java:40) ~[classes/:na]

Why does RestTemplate not want to return the status 404 as a result?
enter code here

a simple explanation can be HttpClientErrorException is unchecked exception. Java docs for this exception tells, 'Exception thrown when an HTTP 4xx is received'
ref - https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/client/HttpClientErrorException.html

so try handling exception with appropriate try/catch and throws

In my case, I left out a forward slash at the end of my endpoint and got the error. After putting it on at the end of my url it worked fine.