flask 配置跨域

from flask import Flask, request, jsonify
import requests
import json
from flask_cors import CORS

app = Flask(__name__)


@app.route('/test/<username>', methods=['GET', 'POST'])
def index(username):
    with open("static/test.txt", "r", encoding="utf-8") as f:  # 打开文件
        for line in f.readlines():
            line = line.strip('\n')
            print(line)
    return username


if __name__ == '__main__':
    CORS(app, supports_credentials=True)
    app.run()