Preface
When using Springboot, when using feign client as the http request tool, when the interface throws exception information, the exception cannot be caught using global exceptions.
feign exception global capture
Define an exception class
@Getter
public class BusinessException extends RuntimeException {
private String message;
private int code;
public BusinessException(String message, int code) {
= message;
= code;
}
public BusinessException(String message) {
super(message);
= message;
}
}
Catch feign request exception
@Slf4j
@Configuration
public class FeignExceptionConfig {
@Bean
public ErrorDecoder feignError() {
return (key, response) -> {
if (() != ()) {
try {
String data = (().asInputStream());
("feignRequest error,The return value is:{{}}", data);
throw new BusinessException(data);
} catch (BusinessException e) {
throw e;
} catch (Exception e) {
("Exception information is:", e);
throw new RuntimeException(e);
}
}
// Leave other exceptions to Default for decoding and processing // Just use a singleton here, Default doesn't need to go to new every time return new ().decode(key, response);
};
}
}
Or add this to global exception capture
@ExceptionHandler()
@ResponseStatus(HttpStatus.BAD_REQUEST)
public String handleFeignException(FeignException ex) {
("feign exception handling information", ex);
return ex.contentUTF8();
}
Summarize
Feign client is a powerful request tool, but exception handling sometimes requires additional processing
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