Django中的序列化主要是在数据库中扫描数据返回给客服端用户
serializers
1 from django.core import serializers
2
3 ret = models.UserInfo.objects.all()
4 data = serializers.serialize("json", ret)
json.dumps
1 import json
2
3 #ret = models.UserInfo.objects.all().values('username')
4 ret = models.UserInfo.objects.all().values_list('username')
5
6 ret=list(ret)
7
8 result = json.dumps(ret)
json.dumps无法处理datetime时期格式可以自己定义
1 import json
2 from datetime import date
3 from datetime import datetime
4
5 d=datetime.now()
6
7
8 class JsonCustomEncoder(json.JSONEncoder):
9
10 def default(self, field):
11
12 if isinstance(field, datetime):
13 return field.strftime('%Y-%m-%d %H:%M---%S')
14 elif isinstance(field, date):
15 return field.strftime('%Y-%m-%d')
16 else:
17 return json.JSONEncoder.default(self, field)
18
19
20 ds = json.dumps(d, cls=JsonCustomEncoder)
21
22 print(ds)
23 print(type(ds))
24
25
26
27 '''
28 Supports the following objects and types by default:
29
30 +-------------------+---------------+
31 | Python | JSON |
32 +===================+===============+
33 | dict | object |
34 +-------------------+---------------+
35 | list, tuple | array |
36 +-------------------+---------------+
37 | str | string |
38 +-------------------+---------------+
39 | int, float | number |
40 +-------------------+---------------+
41 | True | true |
42 +-------------------+---------------+
43 | False | false |
44 +-------------------+---------------+
45 | None | null |
46 +-------------------+---------------+
47
48 '''