#!/usr/bin/python3
# encoding:utf-8
import flask,json
# 實例化api，把當前這個python文件當作一個服務，__name__代表當前這個python文件
api = flask.Flask(__name__) 
 
# 'index'是接口路徑，methods不寫，默認get請求     
@api.route('/index',methods=['get']) 
# get方式訪問
def index():
  ren = {'msg':'成功訪問首頁','msg_code':200}
  #json.dumps 序列化時對中文默認使用的ascii編碼.想輸出中文需要指定ensure_ascii=False
  return json.dumps(ren,ensure_ascii=False)
 
#post入參訪問方式一：url格式參數
@api.route('/article',methods=['post']) 
def article():
  #url格式參數?id=12589&name='lishi'
  id = flask.request.args.get('id')
   
  if id:
    if id == '12589':
      ren = {'msg':'成功訪問文章','msg_code':200}
    else:
      ren = {'msg':'找不到文章','msg_code':400}
  else:
    ren = {'msg':'請輸入文章id參數','msg_code':-1}
  return json.dumps(ren,ensure_ascii=False)
 
#post入參訪問方式二：from-data（k-v）格式參數
@api.route('/login',methods=['post'])
def login():
  #from-data格式參數
  usrname = flask.request.values.get('usrname')
  pwd = flask.request.values.get('pwd')
   
  if usrname and pwd:
    if usrname =='test' and pwd =='123456':
      ren = {'msg':'登錄成功','msg_code':200}
    else:
      ren = {'msg':'用戶名或密碼錯誤','msg_code':-1}
  else:
    ren = {'msg':'用戶名或密碼為空','msg_code':1001}
  return json.dumps(ren,ensure_ascii=False)
 
#post入參訪問方式二：josn格式參數  
@api.route('/loginjosn',methods=['post'])
def loginjosn():
  #from-data格式參數
  usrname = flask.request.json.get('usrname')
  pwd = flask.request.json.get('pwd')
   
  if usrname and pwd:
    if usrname =='test' and pwd =='123456':
      ren = {'msg':'登錄成功','msg_code':200}
    else:
      ren = {'msg':'用戶名或密碼錯誤','msg_code':-1}
  else:
    ren = {'msg':'用戶名或密碼為空','msg_code':1001}
  return json.dumps(ren,ensure_ascii=False)
 
if __name__ == '__main__':
  api.run(port=8888,debug=True,host='127.0.0.1') # 啟動服務
  # debug=True,改了代碼后，不用重啟，它會自動重啟
  # 'host='127.0.0.1'別IP訪問地址

flask.request.form.get("key", type=str, default=None) 獲取表單數據，
flask.request.args.get("key") 獲取get請求參數，
flask.request.values.get("key") 獲取所有參數。