Python生成下载文件 Python生成并下载文件后端代码实例
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txt文件
生成并下载txt文件:
@app.route('/download', methods=['GET']) def download(): content = "long text" response = make_response(content) response.headers["Content-Disposition"] = "attachment; filename=myfilename.txt" return response
运行app.py后,在浏览器中输入:http://127.0.0.1:5000/download,直接下载txt文件。
excel 文件
生成并下载excel 文件:
@app.route("/export",methods = ['GET']) def export(): out = BytesIO() workbook = xlsxwriter.Workbook(out) table = workbook.add_worksheet() table.write(0, 0, "第1列") table.write(0, 1, "第2列") table.write(0, 2, "第3列") table.write(0, 0, "name") table.write(1, 1, "sex") table.write(2, 2, "class") workbook.close() out.seek(0) filename = quote("Entity类下载.xlsx") rv = send_file(out, as_attachment=True, attachment_filename=filename) rv.headers['Content-Disposition'] += "; filename*=utf-8''{}".format(filename) return rv
运行app.py后,在浏览器中输入:http://127.0.0.1:5000/export,可以直接下载excel文件。
前后端分离时,接口返回时要注意headers
def exportExcel(): workbook = xlwt.Workbook(encoding='utf-8') wSheet = workbook.add_sheet("Plan") titleFont = xlwt.Font() f = BytesIO() workbook.save(f) f.seek(0) filename = quote(saveFile) # 将单个字符串编码转化为 %xx%xx 的形式 rv = send_file(f, as_attachment=True, attachment_filename=filename) rv.headers['Content-Disposition'] += "; filename*=utf-8''{}".format(filename) rv.headers['Cache-Control'] = 'no-store' # 重点在这句!!!!!!!!!!!!!!!!! return rv
加载全部内容