结构体 字典 json 序列化 差异 json序列化器 浮点数序列化
实践：
1、
import "encoding/json"
func mapVstruct2jsonMarshal() {
t := struct {
A string
B int32
C bool
}{"a", 123, true}
m := map[string]interface{}{
"A": "a",
"B": 123,
"C": true,
}
b1, _ := json.Marshal(t)
b2, _ := json.Marshal(m)
t := map[string]interface{}{
"app_key": app_key,
"version": version,
"timestamp": timestamp_int,
"nonce_str": nonce_str,
"sign": sign,
}
p, _ := json.Marshal(t)
https://mp.weixin.qq.com/s/dvLzS3t51Hq_fPK1FkumyQ
# -*- coding: UTF-8 -*-
import decimal
import json
class DecimalEncoder(json.JSONEncoder):
'''
json.dumps(str) --> Object of type Decimal is not JSON serializable
json.dumps(str,cls=DecimalEncoder)
'''
def default(self, o):
if isinstance(o,decimal.Decimal):
return float(o)
super(DecimalEncoder,self).default(o)
import json
from utils.util_json import DecimalEncoder as util_DecimalEncoder
burst_feature_str = json.dumps(burst_feature,cls=util_DecimalEncoder)
集合转列表
import datetime
import decimal
import uuid
from flask.json import JSONEncoder as BaseJSONEncoder
class JSONEncoder(BaseJSONEncoder):
def default(self, o):
app.logger.info(o)
import pprint
pprint.pprint(o)
if isinstance(o, datetime.datetime):
# 格式化时间
return o.strftime("%Y-%m-%d %H:%M:%S") if o is not None else None
if isinstance(o, datetime.date):
# 格式化日期
return o.strftime('%Y-%m-%d') if o is not None else None
if isinstance(o, decimal.Decimal):
# 格式化高精度数字
return str(o)
if isinstance(o, uuid.UUID):
# 格式化uuid
return str(o)
if isinstance(o, bytes):
# 格式化字节数据
return o.decode("utf-8")
if isinstance(o,set):
return list(o)
return super(JSONEncoder, self).default(o)
