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python+flask實現(xiàn)API的方法

更新時間：2018年11月21日 11:51:26 作者：kd丹妮兒

這篇文章主要為大家詳細介紹了python+flask實現(xiàn)API的方法，具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文為大家分享了python+flask實現(xiàn)API的具體方法，供大家參考，具體內(nèi)容如下

Flask 框架

#-*-coding:utf-8-*-
 
#pip install flask
#pip install flask-restful
 
from flask import Flask
 
app = Flask(__name__)
 
@app.route('/')
def index():
  return "hello world!"
 
if __name__ == '__main__':
  app.run(debug=True)

pycharm運行該程序后，在瀏覽器輸入http://127.0.0.1:5000/，即可看到一個網(wǎng)頁：

Flask + flask_restful創(chuàng)建一個簡單的應(yīng)用程序:

from flask import Flask
from flask_restful import Resource,Api
 
app = Flask(__name__)
api = Api(app)
class HelloWorld(Resource):
  def get(self):
    return {"hello":"world"}
 
api.add_resource(HelloWorld,'/')
 
if __name__ == '__main__':
  app.run(debug=True)

python+flask創(chuàng)建API: 獲取post請求傳遞的json數(shù)據(jù)

from flask import Flask,abort,jsonify,make_response,request
 
app = Flask(__name__)
 
@app.route('/analyze/' ,methods=['POST'])
def call_wiscan_analyze():
  if not request.json or not 'path' in request.json:
     abort(400)
  path = request.json['path']
 
 
if __name__ == '__main__':
  app.run(port='50055',debug=True)

請求：

from requests import post
 
if __name__ == '__main__':
  path='"F:/nb_org_data/86574FG01/2013/1029/0008/86574FG01201310290008.img"'
  ret = post('http://localhost:50055/analyze/',json={'path':path})
  print(ret.text)

將API封裝為win32服務(wù)

import win32serviceutil
import win32service
import win32event
import win32timezone
from flask import Flask,abort,jsonify,make_response,request
import threading
 
app = Flask(__name__)
_ONE_DAY_IN_SECONDS = 60 * 60 * 24
 
@app.route('/analyze/' ,methods=['POST'])
def call_wiscan_analyze():
  if not request.json or not 'path' in request.json:
     abort(400)
  path = request.json['path']
 
def thread_target():
  app.run(port='50055', debug=True)
 
class GRPCWin32Client(win32serviceutil.ServiceFramework):
  _svc_name_ = 'GRPCWin32Client'
  _svc_display_name_ = 'Nuctech GRPC Client'
  _svc_description_ = 'wiscan grpc client'
 
  def __init__(self, args):
    win32serviceutil.ServiceFramework.__init__(self, args)
    self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
    #self.logger = self._getLogger()
    self.run = True
 
  def SvcDoRun(self):
    th = threading.Thread(target=thread_target)
    th.start()
    try:
      while self.run:
        time.sleep(_ONE_DAY_IN_SECONDS)
 
    except KeyboardInterrupt:
      pass
 
    pass
 
  def SvcStop(self):
    self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
    win32event.SetEvent(self.hWaitStop)
    self.run = False
 
if __name__ == '__main__':
  import sys
  import servicemanager
  if len(sys.argv) == 1:
    try:
      evtsrc_dll = os.path.abspath(servicemanager.__file__)
      servicemanager.PrepareToHostSingle(GRPCWin32Client)
      servicemanager.Initialize('GRPCWin32Client', evtsrc_dll)
      servicemanager.StartServiceCtrlDispatcher()
    except win32service.error as details:
      import winerror
      if details == winerror.ERROR_FAILED_SERVICE_CONTROLLER_CONNECT:
        win32serviceutil.usage()
  else:
    win32serviceutil.HandleCommandLine(GRPCWin32Client)

注意：

啟動一個線程運行app.run()，否則安裝完win32服務(wù)，啟動服務(wù)后，無法停止服務(wù)，因為app內(nèi)部循環(huán)沒有結(jié)束！

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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