feign 日志切面

1.配置类

@Configuration
public class FeignConfig {

    @Autowired
    private ObjectFactory<HttpMessageConverters> messageConverters;

    @Bean
    public Decoder decode() {
        return new OpenFeignInterceptor(new OptionalDecoder(new ResponseEntityDecoder(new SpringDecoder(this.messageConverters))));
    }
}

2. 日志切面

@Slf4j
public class OpenFeignInterceptor implements Decoder {

    private final Decoder delegate;

    public OpenFeignInterceptor(Decoder delegate) {
        this.delegate = delegate;
    }

    @Override
    public Object decode(Response response, Type type) throws IOException {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int bytesRead;
        while ((bytesRead = response.body().asInputStream().read(buffer)) != -1) {
            byteArrayOutputStream.write(buffer, 0, bytesRead);
        }
        byte[] body = byteArrayOutputStream.toByteArray();
        String bodyStr = new String(body, StandardCharsets.UTF_8);

        log.info("接口地址:{}", response.request().url());
        if (Request.HttpMethod.POST == response.request().httpMethod() && response.request().body() != null) {
            log.info("接口参数:{}", new String(response.request().body()));
        }
        log.info("接口返回:{}", bodyStr);
        return delegate.decode(response.toBuilder().body(bodyStr, StandardCharsets.UTF_8).build(), type);
    }
}