django 實現檔案上傳功能
阿新 • • 發佈：2022-04-10
檔案上傳原理是無論上傳的檔案格式是什麼，將檔案以二進位制的資料格式讀取並寫入網站指定的檔案裡。
在myApp下配置urls.py路由：
#myApp urls.py from argparse import Namespace from operator import index from django.urls import path,re_path,include from . import views from django.views.generic import RedirectView urlpatterns = [ path("",views.index,name="index"), path("download/file1",views.download1,name="download1"), path("download/file2",views.download2,name="download2"), path("download/file3",views.download3,name="download3"), path("upload",views.upload,name="uploaded") ] #配置全域性404頁面 handler404 = "myApp.views.page_not_found" #配置全域性500頁面 handler500= "myApp.views.page_error"
在myApp應用的檢視中，實現檔案上傳的功能：
from django.shortcuts import render from django.http import HttpResponse import os # Create your views here. def index(request): # return redirect("index:shop",permanent=True) return render(request,"index.html") def upload(request): #請求方法為POST時，執行檔案上傳 print("debug ++++++++++++++++++++++++") print(request.method) if request.method == "POST": #獲取上傳的檔案，如果沒有檔案，就預設為None myFile = request.FILES.get("myfile",None) if not myFile: return HttpResponse("no files for upload") #開啟特定的檔案進行二進位制的寫操作 f = open(os.path.join("E:\myDjango\\file",myFile.name),"wb+") #分塊寫入檔案 for chunk in myFile.chunks(): f.write(chunk) f.close() return HttpResponse("upload over!") else: #請求方法為get時，生成檔案上傳頁面 return render(request,"index.html")
在index.html中，新增上傳檔案的控制元件：
<html>
<header>
<title>首頁檔案處理</title>
</header>
<body>
<a href="{%url 'myApp:download1' %}">下載1</a>
<a href="{%url 'myApp:download2' %}">下載2</a>
<a href="{%url 'myApp:download3' %}">下載3</a>
<form enctype="multipart/form-data" action="/upload" method="post">
<!-- django 的csrf 防禦機制 -->
{%csrf_token%}
<input type="file" name="myfile" />
<br>
<input type="submit" value="上傳檔案" />
</form>
</body>
</html>