json 对数据进行序列化时，对不是python基本数据类型进行序列化时，如对--对象、日期、时间等处理

''''

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import json as default_json
from json.encoder import JSONEncoder

class JsonEncoder(JSONEncoder):
def default(self, o):
if isinstance(o, object):
return o.__dict__
return JSONEncoder.default(self, o)

class Json(object):

@staticmethod
def dumps(response, ensure_ascii=True):

return default_json.dumps(response, ensure_ascii=ensure_ascii, cls=JsonEncoder)

''''

import json
from json.encoder import JSONEncoder
from datetime import datetime,date

class Jsonencoder(JSONEncoder):
    def default(self, field):
        if isinstance(field,datetime):    #如果field是日期类型
            return field.strftime("%Y-%m-%d %H:%M:%S")
        elif isinstance(field,date):
            return field.strftime("%Y-%m-%d")
        elif isinstance(field,object):
            return field.__dict__
        else:
            return json.JSONEncoder.default(self,field)

class Baseobj():
    def __init__(self):
        self.status=True
        self.message=None
        self.data=None
        self.name="hello"
#json序列化只能dumps py的基本数据类型：如字典，列表、数字，如日期、对象的话需要做特殊处理
aa=Baseobj()
print("----------",aa)   #<__main__.Baseobj object at 0x000002D941E97F48>
data_obj={
    "k1":132,
    "k2":datetime.now(),
    "k3":Baseobj(),
    "k4":"hao",
　　"k5":["as", 2, "sadf"]

}

ds=json.dumps(data_obj,cls=Jsonencoder)
print(ds)

'''
{"k1": 132, 
"k2": "2021-02-24 19:40:20", 
"k3": {"status": true, "message": null, "data": null, "name": "hello"}, 
"k4": "hao",
"k5": ["as", 2, "sadf"]
}

'''