Function EncodeJSONResponse

transport/http/server.go:163–181

EncodeJSONResponse is a EncodeResponseFunc that serializes the response as a JSON object to the ResponseWriter. Many JSON-over-HTTP services can use it as a sensible default. If the response implements Headerer, the provided headers will be applied to the response. If the response implements StatusC

(_ context.Context, w http.ResponseWriter, response interface{})

// will be applied to the response. If the response implements StatusCoder, the
// provided StatusCode will be used instead of 200.
func EncodeJSONResponse(_ context.Context, w http.ResponseWriter, response interface{}) error {
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	if headerer, ok := response.(Headerer); ok {
		for k, values := range headerer.Headers() {
			for _, v := range values {
				w.Header().Add(k, v)
			}
		}
	}
	code := http.StatusOK
	if sc, ok := response.(StatusCoder); ok {
		code = sc.StatusCode()
	}
	w.WriteHeader(code)
	if code == http.StatusNoContent {
		return nil
	}
	return json.NewEncoder(w).Encode(response)
}

// DefaultErrorEncoder writes the error to the ResponseWriter, by default a
// content type of text/plain, a body of the plain text of the error, and a