Flask--跨域_flask 开跨域

跨域配置

• 方法一: 设置CORS策略

from flask import Flask, render_template
from flask_cors import CORS

app = Flask(__name__)

# 配置跨域: supports_credentials=True, 必须配置，否则不生效
# resources = r'/*': 让本服务器所有的URL都允许跨域请求，
# resources = {r"/api": {"origins": "*"}}: 让本服务器/api开头的URL允许跨域请求
CORS(app, resources=r'/*', supports_credentials=True)

@app.route('/', methods=['get'])
def index():    
    return render_template('index.html')

if __name__ == "__main__":
    app.run()
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方法二：对请求的Response header中加入header

from flask import Flask, render_template

app = Flask(__name__)
@app.after_request
def af_request(resp):     
    """
     #请求钩子，在所有的请求发生后执行，加入headers。
    :param resp:
    :return:
    """
    resp = make_response(resp)
    resp.headers['Access-Control-Allow-Origin'] = '*'
    resp.headers['Access-Control-Allow-Methods'] = 'GET,POST'
    resp.headers['Access-Control-Allow-Headers'] = 'x-requested-with,content-type'
    return resp
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