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web client error handling

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Pragya Keshap answered on February 28, 2023 Popularity 4/10 Helpfulness 1/10

answer web client error handling

web client error handling

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It can be done by 2 ways:-

1. While implementing WebClient

2. While Doing retries

public static ExchangeFilterFunction errorHandler() {
    return ExchangeFilterFunction.ofResponseProcessor(clientResponse -> {
        if (clientResponse.statusCode().is5xxServerError()) {
            return clientResponse.bodyToMono(String.class)
                    .flatMap(errorBody -> Mono.error(new UserDefinedException1(errorBody)));
        } else if (clientResponse.statusCode().is4xxClientError()) {
            return clientResponse.bodyToMono(String.class)
                    .flatMap(errorBody -> Mono.error(new UserDefinedException2(errorBody)));
        } else {
            return Mono.just(clientResponse);
        }
    });
}
try {
UserDefinedResponse response = webClient
        .post()
        .body(Mono.just(userDefinedRequest), Map.class)
        .retrieve()
        .bodyToMono(UserDefinedResponse.class)
        .onErrorResume(Mono::error)
        .retryWhen(Retry.backoff(3, Duration.of(2, ChronoUnit.SECONDS))
                .onRetryExhaustedThrow((retryBackoffSpec, retrySignal) ->
new UserDefinedException(retrySignal.failure())))
        .block();
} catch(UserDefinedException userDefinedException){
//Error Handling logic
}

https://medium.com/nerd-for-tech/webclient-error-handling-made-easy-4062dcf58c49

Popularity 4/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: error-handling java web-client

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Contributed on Feb 28 2023

Pragya Keshap

0 Answers Avg Quality 2/10

web client error handling

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