flask 从二进制数据返回图片 import io from flask import current_app as app from flask import send_file from myproject import Obj @app.route('/logo.png') def logo(): obj = Obj.objects.get(title='Logo') return send_file(io.BytesIO(obj.logo.read()), attachment_filename='logo.jpg', m...
fromopenpyxl.drawing.imageimportImage fromflaskimportFlask, send_file, request importbase64 importio fromioimportBytesIO fromPILimportImage as PillowImage importmath app=Flask(__name__) @app.route('/download-excel', methods=['POST']) defdownload_excel(): base64_swdt=request.form.get('base64'...
TypeError: send_file() got an unexpected keyword argument 'mimetype' 我尝试用其他有效的参数替换mimetype,它只会给出相同的错误,但会给出新参数的名称。所以我认为问题在于我的bytes_io。 更新: 为了澄清,send_file()指的是内置的flask.send_file()方法: python flask 广告 平台电商解决方案 为客户提供电...
代码如下: fromPILimportImageimportqrcodefromioimportBytesIOfromflaskimportFlask,send_file,jsonify,requestimportsysimportbase64importrandom app=Flask(__name__)#二维码创建路由1@app.route("/api/QRcode/create/",methods=["GET","POST"])defcode_share():ifrequest.method=='GET':url64=request.args.get...
app=Flask(__name__)@app.route('/generate_image')defgenerate_image():img=Image.new('RGB',(100,100),color='red')img_io=io.BytesIO()img.save(img_io,'PNG')img_io.seek(0)returnsend_file(img_io,mimetype='image/png',as_attachment=True,download_name='generated_image.png')if__name_...
# 导入需要的模块fromflaskimportFlask,send_filefromioimportBytesIO# 创建Flask应用app=Flask(__name__)# 定义路由,将PDF文件返回给浏览器@app.route('/show_pdf')defshow_pdf():pdf_file=BytesIO(pdf_data)returnsend_file(pdf_file,attachment_filename='document.pdf',as_attachment=False)# 运行应用if_...
from io import BytesIO as BiOimport randomfrom flask import send_filefrom io import BytesIOfrom PIL import Image as Imgfrom numpy import arrayimport cv2from PIL import ImageTkimport osfrom flask import render_template as renderimport math as mathfrom matplotlib import pyplot as pltfrom matplotlib...
# app.pyfromflaskimportsend_fileimportxlsxwriter@app.route("/students/v1.0/excel", methods=["GET"])defstudents_excel():"""1. 生成表头 2. 生成数据 3. 个性化合并单元格,修改字体属性、修改列宽 3. 返回给前端"""fp = io.BytesIO()# 生成一个BytesIO对象book = xlsxwriter.Workbook(fp)# 可以...
创建一个简单的Flask应用并展示Matplotlib图表: from flask import Flask, send_file import matplotlib.pyplot as plt import io app = Flask(__name__) @app.route('/') def plot(): img = io.BytesIO() plt.plot([1, 2, 3, 4], [10, 20, 25, 30]) ...
python: BytesIO 中 read 用法 在用Flask 写一个项目,后台管理用的插件暂时是 flask-admin。想实现的效果:在后台管理页面中,把提交到后端的图片不保存在 static 文件夹下面,而是通过后端代码把这个文件对象上传到 AWS 的 S3中存储。 通过flask-admin 上传到后端的文件对象的类型是:...