AWS Lmbda TypeError:datetime.datetime(2012,8,8,21,46,24,862000)不是JSON可序列化的

Question

我试图从m RDS数据库返回一个装备.dte字段都在DATETIME格式化,这导致我得到以下错误:

TypeError: datetime.datetime(2012, 8, 8, 21, 46, 24, 862000) is not JSON serializable

我怎么能绕过这个？

继承我的代码:

import pymysql
import json
from rds import *

#rds settings
host  = rds_host
name = rds_name
password = rds_password
db_name = rds_db_name
port = rds_port

try:
    conn = pymysql.connect(host = host, user=name, passwd=password, db=db_name, connect_timeout=5)

except:
    raise Exception('Database Error: The server encountered an unexpected condition which prevented it from fulfilling the request.')


def handler(event, context):

    cur = conn.cursor(pymysql.cursors.DictCursor)
    #selects a user from the database
    query = "SELECT * FROM Outfits WHERE outfit_id = '" + event['outfitId'] + "' LIMIT 1"
    #runs the SQL query
    try:
        cur.execute(query)
    except:
        raise Exception('Internal Error: The server encountered an unexpected condition which prevented it from fulfilling the request.')

    #stores the downloaded record into the user variable
    rows = cur.fetchone()
    return result

Answer 1

尚未使用AWS Lambda,但此问题是特定于python的.datetime.datetime对象不能被JSON序列化,你需要在JOSN序列化之前将它们转换为字符串.您可以使用.strftime()将datetime.datetime对象转换为字符串.