如何在Django视图中显示PDF文件？

pip install reportlab

from django.http import FileResponse
from reportlab.pdfgen import canvas
from io import BytesIO

def display_pdf(request):
    # 创建一个BytesIO对象，用于存储生成的PDF文件
    buffer = BytesIO()

    # 创建一个PDF画布对象，并将其绘制到BytesIO对象中
    p = canvas.Canvas(buffer)
    p.drawString(100, 750, "Hello world.")
    p.showPage()
    p.save()

    # 将BytesIO对象的内容作为PDF文件返回
    buffer.seek(0)
    return FileResponse(buffer, as_attachment=True, filename='hello.pdf')

from django.urls import path
from . import views

urlpatterns = [
    path('display_pdf/', views.display_pdf, name='display_pdf'),
]