python+flask实现API的方法

本文为大家分享了python+flask实现API的具体方法，供大家参考，具体内容如下

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运行该程序后，在浏览器输入http://127.0.0.1:5000/，即可看到一个网页：

Flask + flask_restful创建一个简单的应用程序:

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创建API: 获取post请求传递的json数据

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)

请求：

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)

将API封装为win32服务

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：

启动一个线程运行app.run()，否则安装完win32服务，启动服务后，无法停止服务，因为app内部循环没有结束！

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。