flask笔记：12：flask与nodejs通讯跨域问题解决

run.py：

from flask import Flask
from flask import Response

app = Flask(__name__)

@app.route('/')
def hello_world():
return 'hello world'

#接收一个字符串
def Response_headers(content):
resp = Response(content)
#返回数据添加头部信息
resp.headers['Access-Control-Allow-Origin'] = '*'
return resp

@app.route('/sss')
def sss():
resp = Response_headers("aaaaa")
return resp

if __name__ == '__main__':
app.run(debug=True,threaded=True)

启动python run.py 

另一个方式用flask_cors

from flask import Flask
from flask_cors import *

app = Flask(__name__)
CORS(app, supports_credentials=True)

@app.route('/')
def hello_world():
return 'Hello World!'

if __name__ == '__main__':
app.run(debug=True)