xpath规则解析json格式数据

##例：

aaaa = {"beginPageIndex": 1, "currentPage": 1, "endPageIndex": 1, "pageCount": 1, "pageSize": 20, "recordCount": 1,
        "recordList": [{"date": "2009-05-07 14:51:11.000",
                        "abstra": "随着7月29日“法拉加特”号导弹驱逐舰和“考夫曼”号导弹护卫舰在第40驱逐舰分舰队指挥官的指挥下，驶出梅波特海军基地，“美洲伙伴关系-2008”演习开始了。参加演习的各国海军兵力被编成特混编队（CTF），美国第3舰队副司令塞缪尔·洛克里尔海军中将被任命为编队指挥官直接指挥演习。",
                        "picurl": "", "nodename": "焦点新闻", "author": "", "sourcename": "", "id": "bJHxGG0BPLwr9UCVDe-m",
                        "title": "专家总结美海军08年训练重点 强化海上安保行动",
                        "content": "然后举行了美韩“关键决心““鹞鹰”演习。“俄亥俄”号战略核潜艇在其在西太平洋为期15个月的巡逻的最后阶段参加了演习。艇上作战指挥中心对演习中的美、韩海军特种作战部队的行动进行协调。",
                        "url": "http://www.china.com.cn/military/txt/2009-05/07/content_17739183.htm"}],
        "tookSecond": 0.029}
bbb = AnalyzeJsonData(aaaa)
data = "//recordList/date/text()"
ccc = bbb.ad(data)
print(ccc)

结果

class JsonNode(object):
    def __init__(self, json_data):
        self.json_data = json_data

    def obj_json(self):
        return self.json_data

    def ad(self):
        pass


class AnalyzeJsonData(object):
    def __init__(self, json_data):
        """"""
        self.json_data = JsonNode(json_data)

    # 分解解析规则
    def resolve_rule(self, analyze_rule):
        """"""
        if isinstance(analyze_rule, str):
            resolve_res = analyze_rule.lstrip("//").split("/")
            if resolve_res[-1] == "text()":
                finally_rule = resolve_res.pop(-1)
            # elif resolve_res[-1] == "data":
            #     finally_rule = resolve_res.pop(-1)
            else:
                finally_rule = ""
            return resolve_res, finally_rule
        else:
            raise ValueError(f"解析规则必需是【str】类型")

    # 解析数据
    def ad(self, analyze_rule):
        """"""
        analyze_rules, finally_rule = self.resolve_rule(analyze_rule)
        # ['hotList', 'itemList', 'itemImageNew']
        # 解析规则被分为3层,
        json_datas = [self.json_data]
        # 对解析规则进行循环
        for rule_index, rule_data in enumerate(analyze_rules):
            # 将字典组成列表的形式，字典的键不能重复，所以获取到值后便是结果
                        if rule_data:
                new_json_datas = list()
                for json_data in json_datas:
                    child_node = json_data.obj_json()[rule_data]
                    if isinstance(child_node, list):
                        new_child_list = list()
                        for new_child in child_node:
                            new_child_list.append(JsonNode(new_child))
                        new_json_datas = new_child_list
                    else:
                        child_node_obj = JsonNode(child_node)
                        new_json_datas.append(child_node_obj)
                json_datas = new_json_datas
            else:
                return ""
        if finally_rule == "text()":
            datas_res = list()
            for data_res in json_datas:
                datas_res.append(data_res.obj_json())
            return datas_res
        else:
            datas_res = list()
            for json_node in json_datas:
                datas_res.append(AnalyzeJsonData(json_node.obj_json()))
            return datas_res