python---django中文件上传

服务端：

def upload(req):
    if req.method == "GET":
        return render(req, 'upload.html')
    else:
        print(req.POST.get("user"))
        img = req.FILES.get('img')
        print(type(img))
        #(<class 'django.core.files.uploadedfile.InMemoryUploadedFile'>, 获取的是一个对象类型
        # print(img.name)
        # print(img.size)

        with open(img.name,"wb") as fp:
            for line in img.chunks():   #一块一块获取内容
                fp.write(line)
        return HttpResponse("....")

前端：

<form action="/upload.html" method="post" enctype="multipart/form-data">
    {% csrf_token %}
    <input type="text" name="user">
    <div style="position: relative">
        <p>NB的上传</p>
        <input type="file" name="img" style="opacity: 0.2;position: absolute;top:0;left:0;">
    </div>
    <input type="submit" value="提交"/>
</form>

服务端使用form组件验证：

from django import forms
from django.forms import fields

class UploadForm(forms.Form):
    user = fields.CharField()
    img = fields.FileField()

def upload(req):
    if req.method == "GET":
        return render(req, 'upload.html')
    else:
        obj = UploadForm(req.POST,req.FILES)
        if obj.is_valid():
            user = obj.cleaned_data['user']
            img = obj.cleaned_data['img']
            with open(img.name,"wb") as fp:
                for line in img.chunks():   #一块一块获取内容
                    fp.write(line)
            return HttpResponse("....")
        return HttpResponse("....")