Python3: JSON 形式の Post を処理する方法

サーバープログラム　(CGI)

sum_up_json.py

#! /usr/bin/python
# -*- coding: utf-8 -*-
#
#       sum_up_json.py
#
#                                               Jul/24/2021
#
# ---------------------------------------------------------------------
import  os
import  sys
import  json
import  cgi
#
# ---------------------------------------------------------------------
if os.environ['REQUEST_METHOD'] == 'POST':
    length, _ = cgi.parse_header(os.environ['CONTENT_LENGTH'])
    data = sys.stdin.buffer.read(int(length))
#
    json_str = data.decode("utf-8")
    data_aa = json.loads(json_str)
    aa = int(data_aa["aa"])
    bb = int(data_aa["bb"])
    data_aa['wa'] = aa + bb 
    data_aa['sa'] = aa - bb
    str_aa = json.dumps(data_aa)
#
    print('Content-Type: text/json; charset=utf-8')
    print("Access-Control-Allow-Origin: *\r\n")
    print(str_aa)
#   print(data.decode("utf-8"))
# ---------------------------------------------------------------------

テストスクリプト

go_post_json.sh

#
URL="http://localhost/python/sum_up/sum_up_json.py"
#
#
curl -X POST -H "Content-Type: application/json"  $URL \
    -d '{"aa":81, "bb":34 }'