flask 应用的基本结构：
htmlweb.py
-- static
-- templates将 bootstrap.min.css 放到 static 文件夹下，在 templates 文件夹下新建 index.html，里面写入如下信息：
<html>
<head>
<title>APIParse</title>
<link rel="stylesheet" type="text/css" href="{{url_for('static', filename='css/bootstrap.min.css')}}"/>
</head>
<body>
TTYB
</body>
</html>在 htmlweb.py 中写入如下内容：
from flask import Flask, render_template
from io import BytesIO
import xlsxwriter
def create_workbook():
output = BytesIO()
# 创建Excel文件,不保存,直接输出
workbook = xlsxwriter.Workbook(output, {'in_memory': True})
# 设置Sheet的名字为download
worksheet = workbook.add_worksheet('download')
# 列首
title = ["col1","col2","col3"]
worksheet.write_row('A1', title)
dictList = [{"a":"a1","b":"b1","c":"c1"},{"a":"a2","b":"b2","c":"c2"},{"a":"a3","b":"b3","c":"c3"}]
for i in range(len(dictList)):
row = [dictList[i]["a"],dictList[i]["b"],dictList[i]["c"]]
worksheet.write_row('A' + str(i + 2), row)
workbook.close()
response = make_response(output.getvalue())
output.close()
return response
app = Flask(__name__)
@app.route('/', methods=['GET'])
def index():
return render_template("index.html")
from flask import make_response
@app.route('/download', methods=['GET'])
def download():
response = create_workbook()
response.headers['Content-Type'] = "utf-8"
response.headers["Cache-Control"] = "no-cache"
response.headers["Content-Disposition"] = "attachment; filename=download.xlsx"
return response
if __name__ == "__main__":
app.run(host='127.0.0.1', port=88, debug=True)运行在浏览器访问 127.0.0.1:88 可以看到新建的页面，在页面访问 127.0.0.1/download 可以下载生成的 excel :
原文：https://www.cnblogs.com/TTyb/p/10615843.html