自定义JSON序列化/反序列化，以多种可能的格式读取属性

import json
from datetime import datetime

class CustomEncoder(json.JSONEncoder):
    def default(self, obj):
        if isinstance(obj, datetime):
            return obj.strftime('%Y-%m-%d %H:%M:%S')
        return super().default(obj)

class CustomDecoder(json.JSONDecoder):
    def __init__(self, *args, **kwargs):
        json.JSONDecoder.__init__(self, object_hook=self.object_hook, *args, **kwargs)

    def object_hook(self, dct):
        for key, value in dct.items():
            if isinstance(value, str):
                try:
                    dct[key] = datetime.strptime(value, '%Y-%m-%d %H:%M:%S')
                except ValueError:
                    pass
        return dct

# 示例对象
data = {
    'name': 'Alice',
    'birthday': datetime(1990, 5, 15)
}

# 序列化
encoded_data = json.dumps(data, cls=CustomEncoder)
print(f'Serialized: {encoded_data}')

# 反序列化
decoded_data = json.loads(encoded_data, cls=CustomDecoder)
print(f'Deserialized: {decoded_data}')