CODEWITHSUNDEEP
javamongodbresttemplaterestheart
Thira
Thira

Reputation: 73

How to handle no data found when calling restTemplate.getForObject

I am calling restTemplate.getForObject to retrieve a certain value from Mongo DB. How to deal the exception if the expected data is not found in the DB?

Object[] mongodata = restTemplate.getForObject(resulturl,Object[].class,keyval);
list = Arrays.asList(mongodata);

where keyval is a string that contains a json and resulturl is the url for calling mongo

Upvotes: 0

Views: 378

Answers (1)

kidney
kidney

Reputation: 3083

Basically, you have two main options:

  1. Simply wrap the RestTemplate call in a try-catch block and handle the error (in case of 404 not found response, it would be the HttpClientErrorException). Something like
try {
  Object[] mongodata = restTemplate.getForObject(resulturl,Object[].class,keyval);
  list = Arrays.asList(mongodata);
} catch (HttpClientErrorException e) {
  if (e.getStatusCode() == HttpStatus.NOT_FOUND) {
    // Do something
  } else {
    throw e;
  } 
}
  1. Implement a ResponseErrorHandler.

See this post on Baeldung for an example.

Upvotes: 1

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