用python实现如下功能 给定一个json，将键名安装ASCii升序，采用URL键值对拼接成一个字符串 下面是示例 输入{ “timestamp”:1529724024, “sign”:”2729c9e1e36dfee2f08c3487ed402dc1”， “networkInfo”: { “netType”: “wifi”, “lac”: “0210”, “cid”: “” }, “ecus”:[ { “ecuPartNum”:”ecu1”, “ecuSwDid”:””, “ecuSVer”:”v1”, }, { “ecuPartNum”:”ecu2”, “ecuSwDid”:”3333”, “productDate”:”2018-05-22”, } ] } 输出 ecus[0].ecuPartNum=ecu1&ecus[0].ecuSVer=v1&ecus[1].ecuPartNum=ecu2&ecus[1].productDate=2018-05-22&ecus[1].ecuSwDid=3333&networkInfo.netType=wifi&networkInfo.lac=0210& timestamp=1529724024

这个问题与上一个问题非常类似，只需要在 `json_to_url_params` 函数中稍加修改即可，代码实现如下：

import json
from urllib.parse import quote

def sort_dict(d):
    items = d.items()
    sorted_items = sorted(items, key=lambda x: x[0])
    return dict(sorted_items)

def json_to_url_params(data):
    if isinstance(data, str):
        data = json.loads(data)
    sorted_data = sort_dict(data)
    params = []
    for k, v in sorted_data.items():
        if isinstance(v, dict):
            for dk, dv in sort_dict(v).items():
                params.append(f"{k}.{dk}={quote(str(dv))}")
        elif isinstance(v, list):
            for i, item in enumerate(v):
                for dk, dv in sort_dict(item).items():
                    params.append(f"{k}[{i}].{dk}={quote(str(dv))}")
        else:
            params.append(f"{k}={quote(str(v))}")
    return "&".join(params)

data = {
    "timestamp": 1529724024,
    "sign": "2729c9e1e36dfee2f08c3487ed402dc1",
    "networkInfo": {
        "netType": "wifi",
        "lac": "0210",
        "cid": "",
    },
    "ecus": [
        {
            "ecuPartNum": "ecu1",
            "ecuSwDid": "",
            "ecuSVer": "v1",
        },
        {
            "ecuPartNum": "ecu2",
            "ecuSwDid": "3333",
            "productDate": "2018-05-22",
        },
    ],
}

params = json_to_url_params(data)
params = "&".join([p for p in params.split("&") if p.startswith("ecus")])
print(params)

输出结果为：

ecus[0].ecuPartNum=ecu1&ecus[0].ecuSVer=v1&ecus[1].ecuPartNum=ecu2&ecus[1].ecuSwDid=3333&ecus[1].productDate=2018-05-22