Django序列化时间报错

一、前言

当利用models模块从数据库获取数据时,当获的取数据序列化时,如果获取的数据中有关于时间类型的字段,则会报错,错误如下：

TypeError: datetime.datetime(2018, 8, 28, 10, 31, 56, 158078) is not JSON serializable

二、解决方法

import json
from datetime import date, datetime
class MyEncoder(json.JSONEncoder):
    def default(self, obj):
        # if isinstance(obj, datetime.datetime):
        #     return int(mktime(obj.timetuple()))
        if isinstance(obj, datetime):
            return obj.strftime('%Y-%m-%d %H:%M:%S')
        elif isinstance(obj, date):
            return obj.strftime('%Y-%m-%d')
        else:
            return json.JSONEncoder.default(self, obj)

三、测试

import json
from datetime import date, datetime
data = [
    {
        'id': 2,
        'hostname': 'openstack',
        'create_date': datetime(2018, 8, 28, 10, 31, 56, 158078),
        'ip': '10.0.0.12',
        'mod_date': datetime(2018, 8, 28, 10, 31, 56, 158078),
        'detail': '云计算',
        'servertype__serverName': 'openstack',
    }
]

class MyEncoder(json.JSONEncoder):
    def default(self, obj):
        # if isinstance(obj, datetime.datetime):
        #     return int(mktime(obj.timetuple()))
        if isinstance(obj, datetime):
            return obj.strftime('%Y-%m-%d %H:%M:%S')
        elif isinstance(obj, date):
            return obj.strftime('%Y-%m-%d')
        else:
            return json.JSONEncoder.default(self, obj)

print(json.dumps(data, cls=MyEncoder))

 输出结果：

[
    {
        "id": 2,
        "ip": "10.0.0.12",
        "mod_date": "2018-08-28 10:31:56",
        "servertype__serverName": "backup",
        "hostname": "openstack",
        "create_date": "2018-08-28 10:31:56",
        "detail": "\u4e91\u8ba1\u7b97"
    }
]