mydata := map[string]interface{}{
"draw": draw,
"recordsTotal": num,
"recordsFiltered": num,
"data": list,
}
c.JSON(http.StatusOK, mydata)
list是结构体数据
draw和recordsTotal和recordsFiltered是普通的字符串和数字类型
map可以方便的包装一些不同类型数据返回