json中的参数值无法值空！

[Pseudoknot]

{
"param":
[
{
"code":"PSRMap.constructor自定义payload",
"requestTime":"2024-11-07 11:18:03自定义payload",
"requestParam":"e:[NonSerializable]自定义payload",
"responseResult":"",
"responseState":1
}
]
}