如果JSONField列表为空，则导入导出的列表JSON会将JSON转换为字符串

import json

def custom_serializer(obj):
    if isinstance(obj, list) and not obj:
        return '[]'
    return json.dumps(obj)

def custom_deserializer(data):
    if data == '[]':
        return []
    return json.loads(data)

# 示例使用
data = {'key': []}
serialized_data = custom_serializer(data)
print(serialized_data)  # 输出: {"key": []}

deserialized_data = custom_deserializer(serialized_data)
print(deserialized_data)  # 输出: {'key': []}

import orjson

data = {'key': []}
serialized_data = orjson.dumps(data)
print(serialized_data)  # 输出: b'{"key": []}'

deserialized_data = orjson.loads(serialized_data)
print(deserialized_data)  # 输出: {'key': []}

def ensure_json_format(data):
    if isinstance(data, str) and data == '[]':
        return []
    return data

# 示例使用
data = {'key': '[]'}
corrected_data = {k: ensure_json_format(v) for k, v in data.items()}
print(corrected_data)  # 输出: {'key': []}