from django.utils.http import urlquote
from rest_framework.views  APIView
from django.shortcuts  render,redirect,HttpResponse
from dal  models
from django.http  JsonResponse,FileResponse,StreamingHttpResponse
 os

 xlwt

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) # C:\Users\user\Desktop\DownTest



class fileShow(APIView):

    def get(self,request):

        message = {}
        userinfo = models.UserInfo.objects.all()

        workbook = xlwt.Workbook(encoding='utf-8')   新建工作簿\

        sheet1 = workbook.add_sheet("用户表")   新建sheet
        sheet1.write(0,ID 第1行第1列数据
        sheet1.write(0,1,1)">用户名密码创建时间 第1行第1列数据

        path = BASE_DIR + \\utils\\username.xlsx"  储存路径

        excel_row = 1
        for obj in userinfo:
            data_id = obj.id
            data_username = obj.username
            data_password = obj.password
            data_time = obj.create_time

            sheet1.write(excel_row,data_id)
            sheet1.write(excel_row,1,data_username)
            sheet1.write(excel_row,2+= 1

            workbook.save(path)

        file = open(path,1)">rb')    字符串替换成文件
        print(file" file_names = file.name.split('/')[-1]
         print("file_names",file_names)

        response = FileResponse(file)
        response[Content-Type'] = application/octet-stream'

        response[Content-Dispositionattachment;filename={}".format(urlquote(path))  字符串替换成下载文件
        print(response)
        return response

<button id=up">下载文件</button>  一个按钮


请求：

// 下载文件
    $(#up").on(click"down/get<a></a>);
                $a.attr(href",1)">"http://127.0.0.1:8000/down/);  # 红色的是你下载路径
                $(body).append($a);
                $a[0].click();
                $a.remove();
            }

        })