flask解决跨域问题

　方法一：after_request

@app.after_request
def cors(response):
    response.headers["Access-Control-Allow-Origin"] = "*"
    response.headers["Access-Control-Allow-Methods"] = "GET,POST,PUT,DELETE"
    response.headers["Access-Control-Allow-Headers"] = "x-requested-with,content-type"
    return response

　  方法二：Flask配置Cors

pip install flask-cors

具体操作：https://blog.csdn.net/qq_42778001/article/details/101436742