152 lines
4.7 KiB
Python
152 lines
4.7 KiB
Python
# -*- coding:utf-8 -*-
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"""
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Time: 2020/6/1/001 15:29
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Author: kira
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Email:262667641@qq.com
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Project:api_project
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"""
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import json
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import re
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import sys
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sys.path.append("../")
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sys.path.append("./common")
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from jsonpath_ng import parse
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from common.environments import Environments
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from common.data_extraction import logger
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REPLACE_DICT = {
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"null": None,
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"True": True,
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"false": False
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}
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class DataExtractor(Environments):
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def __init__(self):
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super().__init__()
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@logger.log_decorator("提取参数出现了意想不到的错误！！")
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def substitute_data(self, response, regex=None, keys=None, deps=None, jp_dict=None):
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"""
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方法接收一个正则表达式 regex 和一个关联参数表 deps，用于从接口返回的数据中提取关联参数。
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它会从接口返回的数据中使用正则表达式 regex 和正则表达式返回结果的键列表 keys 提取数据，并将其更新到关联参数表中。
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然后，它会使用 subs_deps 和 subs_lists 方法提取更多的关联参数。最后，它将更新后的关联参数表设置为 Environments 类的静态变量，并将其返回
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Args:
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response: 被提取数据对象
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regex: 正则表达式： r'"id": (\d+), "name": "(\w+)",'
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keys: 接收正则表达式返回结果的key： ["a", "b"]
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deps: "name=data[0].name;ok=data[0].id;an=data[0].age[3].a"
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jp_dict: jsonpath 提取方式入参：{"k": "$.data", "x": "$.data[0].age[3].a"}
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Returns:
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"""
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response = response
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if not isinstance(response, (dict, str, list)):
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logger.error(f"被提取对象非字典、非字符串、非列表，不执行jsonpath提取，被提取对象: {response}")
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return {}
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if regex and keys:
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self.substitute_regex(response, regex, keys)
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response = response if isinstance(response, (dict, list)) else json.loads(response)
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if deps:
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self.substitute_route(response, deps)
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if jp_dict:
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self.substitute_jsonpath(response, jp_dict)
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def substitute_regex(self, response, regex, keys):
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"""
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方法用于使用正则表达式 regex 和正则表达式返回结果的键列表 keys 从接口返回的数据中提取数据，并将其更新到关联参数表中。
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Args:
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response:
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regex: 正则表达式：r'"id": (\d+), "name": "(\w+)",'
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keys:结果键列表：["a", "b"],
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Returns:
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"""
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response = json.dumps(response) if isinstance(response, (dict, list)) else response
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match = re.search(regex, response)
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if not match:
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return {}
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groups = match.groups()
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for i, key in enumerate(keys):
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try:
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self.update_environments(key, groups[i])
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except:
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self.update_environments(key, None)
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def substitute_route(self, response, route_str):
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"""
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想字典一样取值:name=data[0].name;ok=data[0].id;an=data[0].age
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Args:
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response:
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route_str:
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Returns:
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"""
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deps_list = re.sub(f"[\r\n]+", "", route_str).split(";")
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for dep_item in deps_list:
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key, value_path = dep_item.split("=")
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value_path_parts = re.findall(r'\w+', value_path)
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temp = response
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for part in value_path_parts:
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if isinstance(temp, dict):
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temp = temp.get(part)
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elif isinstance(temp, list):
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if part.isdigit():
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index = int(part)
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if index < len(temp):
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temp = temp[index]
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else:
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temp = None
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break
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else:
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temp = None
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break
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else:
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temp = None
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break
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if isinstance(temp, (dict, list)):
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continue
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else:
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break
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if temp is not None:
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self.update_environments(key, temp)
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def substitute_jsonpath(self, response, json_path_dict):
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"""
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jsonpath 提取参数
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Args:
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response: 响应结果
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json_path_dict: {"k": "$.data", "x": "$.data[0].age[3].a"}
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Returns: 字符串或者list
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"""
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json_path_dict = json_path_dict if isinstance(json_path_dict, dict) else json.loads(json_path_dict)
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for key, expression in json_path_dict.items():
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try:
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parsed_expression = parse(expression)
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data = response
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# 使用解析器对象进行匹配和提取
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match = parsed_expression.find(data)
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result = [m.value for m in match]
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self.update_environments(key, result[0]) if len(result) == 1 else self.update_environments(key,
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result)
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except Exception as e:
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logger.error(f"jsonpath表达式错误'{expression}': {e}")
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if __name__ == '__main__':
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# 测试subs函数
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res = '{"code": 1,"data": [{"id": 1, "name": "Alice", "age": [20, 21, 22, {"a": "b"}]}]}'
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lists = {"k": "$..code", "x": "$.data[0].age[3].a"}
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dep_str = "name=data[0].name;ok=data[0].id;an=data[0].age"
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regex_str = r'"id": (\d+), "name": "(\w+)",'
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regex_key = ["a", "b"]
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t = DataExtractor()
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t.substitute_data(res, regex=regex_str, keys=regex_key, deps=dep_str, jp_dict=lists)
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print("-------->res:", t.get_environments())
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