goodsGroup := r.Group("/goods")
{
  goodsGroup.GET("/lists",goodlist) // r.GET("/goods/lists",goodlist)
}

获取商品id为1的详细信息

r.GET("/:id",getGood)

// getGood
func getGood(c *Context) {
  id := c.Param("id")
  c.JSON(http.StatusOK,gin.H{
  "id": id,
})
}