这与Netflix Feign - Propagate Status and Exception through Microservices类似的问题
我有 feign 和 hystrix 的微服务架构。我的问题是，当底层服务返回错误响应时——比如状态404——我的 FallbackFactory 应该传播它，但它总是返回200。
这是我的代码：
错误响应解码器：
@Component
public class ErrorResponseDecoder implements ErrorDecoder {
private ErrorDecoder delegate = new ErrorDecoder.Default();
@Override
public Exception decode(String methodKey, Response response) {
HttpHeaders responseHeaders = new HttpHeaders();
for(Map.Entry<String,Collection<String>> entry : response.headers().entrySet()) {
responseHeaders.put(entry.getKey(), new ArrayList<>(entry.getValue()));
}
HttpStatus statusCode = HttpStatus.valueOf(response.status());
String statusText = response.reason();
byte[] responseBody;
try {
responseBody = IOUtils.toByteArray(response.body().asInputStream());
} catch (IOException e) {
throw new RuntimeException("Failed to process response body.", e);
}
if (response.status() >= 400 && response.status() <= 499) {
return new HttpClientErrorException(statusCode, statusText, responseHeaders, responseBody, null);
}
if (response.status() >= 500 && response.status() <= 599) {
return new HttpServerErrorException(statusCode, statusText, responseHeaders, responseBody, null);
}
return delegate.decode(methodKey, response);
}
}
倒退：
@Component
public class ServiceFallbackFactory implements FallbackFactory<ServiceFeign> {
@Override
public ServiceFeign create(final Throwable cause) {
return new ServiceFeign() {
@Override
public Response getList(String date) {
if(cause instanceof HttpStatusCodeException) {
HttpStatusCodeException exc = (HttpStatusCodeException)cause;
return Response.status(exc.getStatusCode().value()).entity(exc.getMessage()).build();
} else {
throw new RuntimeException(cause);
}
}
}
}
输出：
{
"statusType": "NOT_FOUND",
"entity": "404 Not Found",
"entityType": "java.lang.String",
"metadata": {},
"status": 404
}
Http状态：200 :(我怎样才能让它也是404？