Spring integration: handle http error with oubound gateway

Question

How can I handle exceptions in an http outbound gateway? When i receive status code 500 or 400..., an exception is shown. So What should I do to handle http error using spr

Answer 1

If the response status code is in the HTTP series CLIENT_ERROR or SERVER_ERROR, HttpClientErrorException or HttpServerErrorException are thrown respectively. Hence the response doesn't go to reply channel

Refer DefaultResponseErrorHandler
Methods: hasError and handleError

To Handle these exceptions, create your own CustomResponseErrorHandler and override contents of hasError and handlerError methods.

public class CustomResponseErrorHandler extends DefaultResponseErrorHandler {

    @Override
    public boolean hasError(ClientHttpResponse response) throws IOException {
        return hasError(getHttpStatusCode(response));
    }

    protected boolean hasError(HttpStatus statusCode) {
        return /*Status Code to be considered as Error*/ ;
    }

    @Override
    public void handleError(ClientHttpResponse response) throws IOException { /* Handle Exceptions */
    }
}  

And add error-handler to your http-outbound-gateway