我正在嘗試記錄已重定向的請求的響應正文。func main() {  r := gin.Default()  eanAPI := api.NewEanAPI()  v1 := r.Group("/v1")  v1.POST("/*action", eanAPI.Redirect, middleware.SaveRequest())      port := os.Getenv("PORT")  if len(port) == 0 {    port = "8000"  }  r.Run(":" + port)}func (api *eanAPI) Redirect(ctx *gin.Context) {  forwardToHost := "https://jsonplaceholder.typicode.com"  url := ctx.Request.URL.String()  ctx.Redirect(http.StatusTemporaryRedirect, forwardToHost)}type bodyLogWriter struct {  gin.ResponseWriter  body *bytes.Buffer}func (w bodyLogWriter) Write(b []byte) (int, error) {  w.body.Write(b)  return w.ResponseWriter.Write(b)}func SaveRequest() gin.HandlerFunc {  return func(c *gin.Context) {    c.Next()    blw := &bodyLogWriter{body: bytes.NewBufferString(""), ResponseWriter: c.Writer}    c.Writer = blw    c.Next()    statusCode := c.Writer.Status()    fmt.Println("status: ", statusCode)    if statusCode <= 400 {      //ok this is an request with error, let's make a record for it      // now print body (or log in your preferred way)      fmt.Println("Response body: " + blw.body.String())    } }不幸的是，身體的反應總是空洞的。也許是重定向或中間件擾亂了我的身體反應當我嘗試郵遞員時，我可以看到身體反應來了！您可以在https://jsonplaceholder.typicode.com/posts上通過 POST 嘗試。它應該在正文響應中返回一個帶有 id 的有效負載我在這里做錯了什么？提前致謝