Python 如何在sqlalchemy中序列化列表对象？

当我选择All to database时，我使用jsonpickle作为序列化程序，当使用jsonpickle作为序列化程序时，我将把列表对象转换为json，我得到以下输出：

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

代码：

 Session = sessionmaker(bind=connect.ConnectorMySql())
                    ses = Session()
                    lst =  ses.query(pModel).all()
                    return lst

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

jsonpickle：

serialized_obj = jsonpickle.encode(lst[0])

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

输出：

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

但我需要这种格式的json：

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

{"name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

---

你认为这项工作更好吗？

这不是

jsonpickle

的目的

pickle

和

jsonpickle

用于将任意Python对象序列化为某种格式，以便以后可以将其反序列化为完全相同的Python对象。它们不用于根据特定模式对对象进行序列化

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

对于您的情况，您必须自己编写序列化逻辑。例如：

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

obj = lst[0]
serialized_obj = {k: getattr(obj, k) for k in ["name", "fullname", "password", "id"]}

您还必须处理任何特殊类型的问题。您甚至可以想象并尝试自动反映模型上的列

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

---

顺便问一下，我看到的是明文存储的密码吗？

这不是

jsonpickle

的用途

pickle

和

jsonpickle

用于将任意Python对象序列化为某种格式，以便以后可以将其反序列化为完全相同的Python对象。它们不用于根据特定模式对对象进行序列化

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

对于您的情况，您必须自己编写序列化逻辑。例如：

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

obj = lst[0]
serialized_obj = {k: getattr(obj, k) for k in ["name", "fullname", "password", "id"]}

您还必须处理任何特殊类型的问题。您甚至可以想象并尝试自动反映模型上的列

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

---

顺便问一下，我看到的是以明文形式存储的密码吗？

请尝试在SQLAlchemy对象上定义

\uuuu getstate\uuuuu

和

\uuu setstate\uuuu

，如下所示

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

def __getstate__(self):
    state = {}
    for k, v in self.__dict__.items():
        if k != '_sa_instance_state':
            state[k] = v
    return state

def __setstate__(self, d):
    self.__dict__ = d

jsonpickle将使用这些来pickle/depickle，并且您不存储

\u sa\u instance\u state

，如果我理解正确，这是内部簿记

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

---

此处有一些相关信息：

请尝试在SQLAlchemy对象上定义

\uu getstate\uuuuu

和

\uuuu setstate\uuuuu

，如下所示

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

def __getstate__(self):
    state = {}
    for k, v in self.__dict__.items():
        if k != '_sa_instance_state':
            state[k] = v
    return state

def __setstate__(self, d):
    self.__dict__ = d

jsonpickle将使用这些来pickle/depickle，并且您不存储

\u sa\u instance\u state

，如果我理解正确，这是内部簿记

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}

---

这里有一些相关信息：

您能发布您的代码吗？好的，请再看一看您能发布您的代码吗？好的，请再看一看谢谢您的回答，不，这是示例：）），谢谢您的回答，不，这是示例：），

{"py/object": "Models.UserModel.", "sa_instance_state": {"py/object": "sqlalchemy.orm.state.InstanceState", "py/state": {"instance": {"py/id": 0}, "committed_state": {}, "class": {"py/type": "Models.UserModel."}, "manager": {"py/object": "sqlalchemy.orm.instrumentation.SerializeManager", "class": {"py/type": "Models.UserModel.Student"}}, "key": {"py/tuple": [{"py/type": "Models.UserModel.Student"}, {"py/tuple": [1]}]}, "expired_attributes": {"py/set": []}}}, "name": "ramin", "fullname": "eee", "password": "1234345", "id": 1}