Fegin 错误 Could not extract response: no suitable HttpMessageConverter found for XXX

问题：

这两天用Fegin 调用其他小组的下载接口报错
feign.codec.DecodeException: Could not extract response: no suitable HttpMessageConverter found for response type [class com.XXX…manager.dto.HaloResponse] and content type [application/octet-stream;charset=UTF-8]

原因：

对方返回的结果用postman调用显示是流的形式，接收的字段HaloResponse 是json格式

解决方法：

将返回值用Fegin 自带的Response 替换之前HaloResponse
看一下Response的源码

  private final int status;
  private final String reason;
  private final Map<String, Collection<String>> headers;
  private final Body body;
  private final Request request;

body源码

public interface Body extends Closeable {

    /**
     * length in bytes, if known. Null if unknown or greater than {@link Integer#MAX_VALUE}.