Convert String error response to Http Status code

Question

In Java+Spring application I am using, from a third party called over RestTemplate , we get the error response in the JSON with 200 response code.

e.g

{
    "errors": [{
        "reason": "did not like the request",
        "error": "BAD_REQUEST"
    }]
}

How can I convert BAD_REQUEST to the 400 integer representations. Apache HttpStatus inte does not seem to provide any interface to do so.

So your server replies with an HTTP status of 200 with that content? — Sotirios Delimanolis, Oct 31 '17 at 18:52
Ask them all their possible errors, and create your own mapping to standard status codes. — JB Nizet, Oct 31 '17 at 18:53
@JBNizet there is no library to convert string response text to int? — Novice User, Oct 31 '17 at 18:55
I think the following URL may be applicable (might not be though, let me know) https://stackoverflow.com/questions/16401909/spring-resttemplate-post-response — Berkley Lamb, Oct 31 '17 at 18:57
How would such a library know which strings the third-party chose, and which status code they should be mapped to? These strings are not standard. — JB Nizet, Oct 31 '17 at 19:24

score 9 · Accepted Answer · answered Oct 31 '17 at 19:25

Maybe you can use org.springframework.http.HttpStatus:

String error = "BAD_REQUEST";
HttpStatus httpStatus = HttpStatus.valueOf(error);
int errorIntCode = httpStatus.value();

or more safe:

String error = "BAD_REQUEST";
HttpStatus httpStatus = Arrays.stream(HttpStatus.values())
        .filter(status -> status.name().equals(error))
        .findAny()
        .orElse(HttpStatus.INTERNAL_SERVER_ERROR);
int errorIntCode = httpStatus.value();

score -1 · Answer 2 · answered May 23 '20 at 09:52

-1

More succinct and short

HttpStatus.OK.value();

answered May 23 '20 at 09:52

Jose Mhlanga

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Convert String error response to Http Status code

2 Answers2