api就是应用程序编程接口，简称API(Application Programming Interface)，就是软件系统不同组成部分衔接的约定。
随着软件规模的日益庞大，我们需要把复杂系统划分成小的组成部分，编程接口的设计十分重要。程序设计的实践中，编程接口的设计首先要使系统的职责得到合理划分。良好的接口设计可以降低系统各部分的相互依赖，提高组成单元的内聚性，降低组成单元间的耦合程度，从而提高系统的维护性和扩展性。
API测试工具
| 名称 | 类型 | 必须 | 描述 |
|---|---|---|---|
| key | String | 是 | 调用key（必须以GET方式拼接在URL中） |
| secret | String | 是 | 调用密钥 |
| api_name | String | 是 | API接口名称（包括在请求地址中）[item_search,item_get,item_search_shop等] |
| cache | String | 否 | [yes,no]默认yes，将调用缓存的数据，速度比较快 |
| result_type | String | 否 | [json,jsonu,xml,serialize,var_export]返回数据格式，默认为json，jsonu输出的内容中文可以直接阅读 |
| lang | String | 否 | [cn,en,ru]翻译语言，默认cn简体中文 |
| version | String | 否 | API版本 |
API 返回结果
{
"item": {
"num_iid": "3514453298386183303",
"title": "【古蒂歌品牌】精致磨毛纹理 叠穿衬衣女春装新款 高档磨毛衬衫 ",
"desc_short": "",
"price": 82,
"total_price": "",
"suggestive_price": "",
"orginal_price": 82,
"nick": "",
"num": "",
"detail_url": "",
"pic_url": "",
"brand": "",
"brandId": null,
"rootCatId": null,
"cid": 0,
"desc": "",
"item_imgs": [
{
"url": "https://p6-aio.ecombdimg.com/obj/temai/e9ed9a7b06bbbf03b769075a4cf12045www876-876"
},
{
"url": "https://p6-aio.ecombdimg.com/obj/temai/f6543c94a2c3c724fd57a8c61d6e79ec7bb846f5www800-800"
},
{
"url": "https://p6-aio.ecombdimg.com/obj/temai/d312afa85676443c7a807688d4aab85cwww800-800"
},
{
"url": "https://p3-aio.ecombdimg.com/obj/temai/104f75934f295b6395ec792ad755eed8b10f543dwww800-800"
},
{
"url": "https://p9-aio.ecombdimg.com/obj/temai/3d65927c478ab58d06ecc31e6f541d2099e2429cwww800-800"
}
],
"item_weight": "",
"post_fee": null,
"freight": null,
"express_fee": "",
"ems_fee": "",
"shipping_to": "",
"video": [],
"sample_id": "",
"props_name": "",
"prop_imgs": {
"prop_img": []
},
"props_imgs": {
"prop_img": []
},
"property_alias": "",
"props": [],
"total_sold": "",
"skus": [],
"seller_id": "",
"sales": 0,
"shop_id": "sXahcZg",
"props_list": [],
"seller_info": {
"nick": "",
"item_score": null,
"score_p": null,
"delivery_score": null,
"shop_type": null,
"shop_logo": "https://p3-aio.ecombdimg.com/obj/temai/1611656872ab5f2645a9f6cf20810db68844e3e3f5cf248f0f",
"sid": 0,
"title": "古蒂歌精品女装店",
"shop_name": "古蒂歌精品女装店"
},
"tmall": "",
"error": "",
"location": null,
"data_from": "app",
"format_check": "ok",
"desc_img": [],
"shop_item": [],
"relate_items": []
},
"error": "",
"secache": "13dfb7af3b9afe151343f76cf8040cc2",
"secache_time": 1658713748,
"secache_date": "2022-07-25 09:49:08",
"translate_status": "",
"translate_time": 0,
"language": {
"default_lang": "cn",
"current_lang": "cn"
},
"reason": "",
"error_code": "0000",
"cache": 0,
"api_info": "today:14 max:10100 all[55=14+10+31];expires:2030-12-31",
"execution_time": "0.814",
"server_time": "Beijing/2022-07-25 09:49:08",
"client_ip": "106.6.34.78",
"call_args": {
"num_iid": "3514453298386183303"
},
"api_type": "douyin",
"translate_language": "zh-CN",
"translate_engine": "google_new",
"server_memory": "3.14MB",
"request_id": "gw-1.62ddf69419086",
"last_id": "1100119666"
}