http请求方式：POST
https://api.weixin.qq.com/product/sku/get?access_token=xxxxxxxxx

{
    "out_sku_id": "1024",
    "sku_id": 2352525,
    "need_edit_sku": 1,     // 默认0:获取线上数据, 1:获取草稿数据
    "need_real_stock": 1    // 默认0:获取草稿库存, 1:获取线上真实库存
}

{
    "errcode": 0,
    "errmsg":"ok",
    "data":
    {
       "product_id": 23423523452345235,
       "out_product_id": "1234566",
       "out_sku_id": "1024",
       "sku_id": 2352525,
       "thumb_img": "http://img10.360buyimg.com/n1/s450x450_jfs/t1/100778/17/13648/424215/5e590a40E2d68e774/e171d222a0c9b763.jpg",
       "sale_price": 1300,
       "market_price": 1500,
       "stock_num": 100,
       "sku_code": "A24525252",
       "barcode": 13251454,
       "status": 5,
       "sku_attrs": 
       [
           {
               "attr_key": "选择颜色",
               "attr_value": "红蓝主机"
           },
           {
               "attr_key": "选择套装",
               "attr_value": "主机+保护套"
           }
       ]
    }
}