Django实现图片上传功能步骤解析

  　　<form action="/pic_upload/" method="POST" enctype="multipart/form-data">
    　　{% csrf_token %}
    　　<input type="file" name="file">
    　　<input type="submit" value="提交">
  　　 </form>

def pic_upload(request):
  if request.method == "GET":
    return render(request,"helloapp/pic_upload.html",locals())
  if request.method == "POST":
    error = ""
    fp = request.FILES.get("file")
    # fp 获取到的上传文件对象
    if fp:
      path = os.path.join(STATICFILES_DIRS[0],'image/' + fp.name)  # 上传文件本地保存路径， image是static文件夹下专门存放图片的文件夹
      # fp.name #文件名
      #yield = fp.chunks() # 流式获取文件内容
      # fp.read() # 直接读取文件内容
      if fp.multiple_chunks():  # 判断上传文件大于2.5MB的大文件
        # 为真
        file_yield = fp.chunks()  # 迭代写入文件
        with open(path,'wb') as f:
          for buf in file_yield:   # for情况执行无误才执行 else
            f.write(buf)
          else:
            print("大文件上传完毕")
      else:
        with open(path,'wb') as f:
          f.write(fp.read())
        print("小文件上传完毕")
      models.ImgPath.objects.create(path=('image/' + fp.name))   # image是static文件夹下专门存放图片的文件夹
    else:
      error = "文件上传为空"
      return render(request,"helloapp/pic_upload.html",locals())
    return redirect("helloapp/pic_index/") # 重定向到首页

   {% for img in imgs %}
   <img src="{% static img.path %}">
   {% empty %}
   <h1>您没有上传任何图片</h1>
   {% endfor %}

def pic_index(request):
  imgs = models.ImgPath.objects.all()
  return render(request,'helloapp/pic_index.html',locals())