How to disable Spring boots default error handling? - spring

Question

I already tried disabling the Default Error handling of Spring boot w/c throws
{
"timestamp": 1575346220347,
"status": 500,
"error": "Internal Server Error",
"exception": "org.springframework.web.client.HttpClientErrorException",
"message": "401 Unauthorized",
"path": "/auth/login" }
By adding the ff. Config.
#SpringBootApplication(exclude = ErrorMvcAutoConfiguration.class)
and
spring.autoconfigure.exclude: org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration
But I'm getting a bunch of HTML formatted Response instead of the JSON response it should be getting from the server.

Answer 1

You can Use Controller Advice to make a global exception handler. Inside the ControllerAdvice class, you can use #ExceptionHandler annotation to handle exceptions. Here is a good article about ControllerAdvice. https://medium.com/#jovannypcg/understanding-springs-controlleradvice-cd96a364033f

Answer 2

I was not able to disable SpringBoots automatic handling of Error responses however I was able to get the proper JSON Error Response by wrapping my Rest Template request in a try catch and using a library in the rest template as it turns out there is a bug in Rest Template that wouldn't allow me to retrieve the Response body.
From
private final RestTemplate restTemplate = new RestTemplate();
To
private final RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory());
Try-Catch Wrapping
ResponseEntity resp = null;
try{
resp = restTemplate.postForEntity(hostUrl+loginUrl, request,Object.class);
}catch(HttpClientErrorException e) {
ErrorDto result = new ObjectMapper().readValue(e.getResponseBodyAsString(), ErrorDto.class);
return new ResponseEntity<>(result, e.getStatusCode());
}
ErrorDto.java
#JsonIgnoreProperties(ignoreUnknown = true)
public class ErrorDto {
#JsonProperty("Message")
private String message;
#JsonProperty("Reason")
private String reason;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String getReason() {
return reason;
}
public void setReason(String reason) {
this.reason = reason;
}
}