时间：2021-07-01 10:21:17 帮助过：18人阅读
from django.http import HttpResponsedef my_image(request): image_data = open("/path/to/my/image.png", "rb").read() return HttpResponse(image_data, mimetype="image/png")另外一个需要特别注意的的是HttpResponse对象实现了Python的标准“file-like-object”API，也即可以将HttpResponse当做文件使用。 import csvfrom django.http import HttpResponse# Number of unruly passengers each year 1995 - 2005. In a real application# this would likely come from a database or some other back-end data store.UNRULY_PASSENGERS = [146,184,235,200,226,251,299,273,281,304,203]def unruly_passengers_csv(request): # Create the HttpResponse object with the appropriate CSV header. response = HttpResponse(mimetype='text/csv') response['Content-Disposition'] = 'attachment; filename=unruly.csv' # Create the CSV writer using the HttpResponse as the "file." writer = csv.writer(response) writer.writerow(['Year', 'Unruly Airline Passengers']) for (year, num) in zip(range(1995, 2006), UNRULY_PASSENGERS): writer.writerow([year, num]) return response需要注意的几点：
from reportlab.pdfgen import canvasfrom django.http import HttpResponsedef hello_pdf(request): # Create the HttpResponse object with the appropriate PDF headers. response = HttpResponse(mimetype='application/pdf') response['Content-Disposition'] = 'attachment; filename=hello.pdf' # Create the PDF object, using the response object as its "file." p = canvas.Canvas(response) # Draw things on the PDF. Here's where the PDF generation happens. # See the ReportLab documentation for the full list of functionality. p.drawString(100, 100, "Hello world.") # Close the PDF object cleanly, and we're done. p.showPage() p.save() return response流程基本同上，需要注意的几点：
from cStringIO import StringIOfrom reportlab.pdfgen import canvasfrom django.http import HttpResponsedef hello_pdf(request): # Create the HttpResponse object with the appropriate PDF headers. response = HttpResponse(mimetype='application/pdf') response['Content-Disposition'] = 'attachment; filename=hello.pdf' temp = StringIO() # Create the PDF object, using the StringIO object as its "file." p = canvas.Canvas(temp) # Draw things on the PDF. Here's where the PDF generation happens. # See the ReportLab documentation for the full list of functionality. p.drawString(100, 100, "Hello world.") # Close the PDF object cleanly. p.showPage() p.save() # Get the value of the StringIO buffer and write it to the response. response.write(temp.getvalue()) return response其他可能的格式
from django.http import HttpResponseimport xlwtdef viewXls(request): response = HttpResponse(mimetype='application/vnd.ms-excel') response['Content-Disposition'] = 'attachment; filename=request.xls' book = xlwt.Workbook(encoding='utf8') sheet = book.add_sheet('untitled') for row, column, value in ((0,0,1),(0,1,2),(1,0,3),(1,1,4)) sheet.write(int(row),int(column),value) book.save(response) return response流程同上，不在注释。 $.ajax({ url:"{% url 'mycitsm.views.viewXls' %}", data:postData, type:"POST", success:function(result){ }, });//是不可以的，而要使用如下的表单提交才可以：var form = $("#xlsForm");form.attr({ action:"{% url 'mycitsm.views.returnXls' %}", method："POST" });form.submit();说到这里有必要记录一下开发过程中遇到的一个问题，也即将表单内容序列化为字符串的问题。 $('form').submit(function() { alert($(this).serialize()); return false;});#可以输出a=1&c=3&d=4&e=5为什么第二个text类型的input的值还有checkbox类型的input的值以及submit类型的input没有被序列化呢？这是因为如果要表单元素的值包含到序列字符串中，元素必须使用 name 属性。而第二个text类型的input无name属性。checkbox类型的input有一个并没有被checked所以……。serialize()只会将”成功的控件“序列化为字符串。如果不使用按钮来提交表单，则不对提交按钮的值序列化,所以submit类型的input没有被序列化。