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如何为解析错误自定义HTTP 400响应?

我已经编写了REST API服务,该服务要求所有响应均为JSON。但是,当Go HTTP请求解析器遇到错误时,它将返回400作为纯文本响应,而无需调用我的处理程序。例:

> curl -i -H 'Authorization: Basic hi    
there' 'http://localhost:8080/test' -v
*   Trying ::1...
* TCP_NODELAY set
* Connected to localhost (::1) port 8080 (#0)
> GET /test HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.54.0
> Accept: */*
> Authorization: Basic hi
> there
> 
< HTTP/1.1 400 Bad Request
HTTP/1.1 400 Bad Request
< Content-Type: text/plain; charset=utf-8
Content-Type: text/plain; charset=utf-8
< Connection: close
Connection: close

< 
* Closing connection 0
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请注意无效的授权标头。当然,400是正确的响应,但是当然是文本/纯文本。有什么方法可以配置Go http解析器以使用自定义错误响应媒体类型和主体?

error-handling http bad-request go media-type

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