python中jsonpath的使用小结

pip install jsonpath

from jsonpath import jsonpath
res = jsonpath(dict,'jsonpath语法规则字符串')

book_dict = {
    "store":{
        "book":[
            {
                "name": "java 核心编程1",
                "price": "65",
                "isbn": "IS002598934",
                "author" : "周立新"
            },
            {
                "name": "java 核心编程2",
                "price": "64",
                "isbn": "IS876430456",
                "author": "周立新"
            },
            {
                "name" : "java 编程思想",
                "price": "120",
                "isbn": "IS256709873",
                "author": "Bruce Eckel"
            },
            {
                "name" : "RabbitMq 实战指南",
                "price": "79",
                "isbn": "IS987623450",
                "author": "朱忠华"
            },
            {
                "name" : "图解 TCP/IP",
                "price": "69",
                "isbn": "IS9787354679",
                "author": "竹下隆史"
            }
        ]
    }
}

def setUp(self):
  """
  前置设置
  @return:
  """
  self.book_dict = {
      "store": {
          "book": [
              {
                  "name": "java 核心编程1",
                  "price": 65,
                  "isbn": "IS002598934",
                  "author": "周立新"
              },
              {
                  "name": "java 核心编程2",
                  "price": 64,
                  "isbn": "IS876430456",
                  "author": "周立新"
              },
              {
                  "name": "java 编程思想",
                  "price": 120,
                  "isbn": "IS256709873",
                  "author": "Bruce Eckel"
              },
              {
                  "name": "RabbitMq 实战指南",
                  "price": 79,
                  "isbn": "IS987623450",
                  "author": "朱忠华"
              },
              {
                  "name": "图解 TCP/IP",
                  "price": 69,
                  "isbn": "IS9787354679",
                  "author": "竹下隆史"
              }
          ]
      }
  }
  pass

def test_all(self):
    """
    获取所有的结构
    @return:
    """
    dict_data = jsonpath(self.book_dict, '$..*')
    print("查看dict_data支持的属性和方法：", dir(dict_data))

    try:
        for item in dict_data[0]['book']:
            # 美化打印
            pprint(item)
    except Exception as e:
        print(e)
        pass

def test_sub_author(self):
    """
    获取所有子节点的作者
    @return:
    """
    all_author = jsonpath(self.book_dict, '$.store.book[*].author')
    print(all_author)
    pass

def test_sub_all(self):
    """
    获取所有子孙节点
    @return:
    """
    sub_all = jsonpath(self.book_dict, '$..store.*')
    print(sub_all)
    pass

def test_price_all(self):
    """
    获取子节点的所有价格
    @return:
    """
    price_all = jsonpath(self.book_dict, '$..price')
    print("所有的价格：", price_all)

    price_sum = sum([int(price) for price in price_all])
    print(f"价格之和：{price_sum}")
    pass

 def test_book_item(self):
     """
     取出第三本书的所有信息
     @return:
     """
     book_item = jsonpath(self.book_dict, '$..book[2]')
     print(book_item)
     pass

def test_book_filter(self):
    book_count = jsonpath(self.book_dict, '$..book[?(@.price>70)]')
    print(book_count)

def test_mongo_data(self):
    """
    获取mongo中的复杂结构的数据
    @return:
    """
    dict_data = MongoPool().project_8.coffer_check_data.find_one({"_id": "629dbfe615e74466831b5ce2"})
    # 美化打印
    pprint(dict_data)
    change_list = jsonpath(dict_data, '$..change')
    print("获取某一个字字段的列表：", change_list)
    pass