django实现图片上传数据库并显示_Python

Django文件上传，供大家参考，具体内容如下

需求

1、完成学生信息注册操作
2、将学生信息入库
3、将上传文件存放至项目下media文件夹下
4、显示所有学生信息

创建模型类

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									class Student(models.Model):

									    sno = models.AutoField(primary_key=True)

									    sname = models.CharField(max_length=30)

									    photo = models.ImageField(upload_to='imgs')

									    <!--内部类写法 数据库中的名字-->

									    class Meta:

									        db_table = 't_stu'

									    def __str__(self):

									        return self.sname

settings.py文件中文件上传相关设置

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									INSTALLED_APPS = [

									    ...

									    'stu'

									]

									DATABASES = {

									     'default': {

									        'ENGINE': 'django.db.backends.mysql',

									        'NAME': 'django22',

									        'USER': 'root',

									        'PASSWORD': '123321',

									        'HOST': '127.0.0.1',

									        'PORT': '3306',

									    }

									}

									MEDIA_URL = '/media/'

									<!--设置MEDIA_ROOT 默认为空  模型类中图片上传地址 MEDIA_ROOT+up_load -->

									<!--BASE_DIR 为项目录 -->

									MEDIA_ROOT = os.path.join(BASE_DIR,'media')

映射数据库表

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									#在终端中敲命令

									python manage.py makemigrations test

									python manage.py migrate

配置URL

主路由

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									from django.contrib import admin

									from django.urls import path, re_path,include

									from djurls.settings import MEDIA_ROOT

									from stu import urls

									from .import views

									#配置路由读取后台上传文件

									from django.views.static import serve

									urlpatterns = [

									     path('test/',include('test.urls')),

									re_path(r'^media/(?P<path>.*)/$', serve, {"document_root": MEDIA_ROOT}),

									#server 视图函数 将MEDIA的路径和正则匹配的模板路径 显示图片

子路由

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									from django.urls import path

									from test import views

									urlpatterns = [

									    path('test/',views.index.as_view()),

									    path('show/',views.show)

									]

创建视图

stu/views.py

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									import os

									from django.http import HttpResponse, HttpResponseRedirect, Http404

									from django.shortcuts import render

									from django.views import View

									from djurls.settings import BASE_DIR

									from test.models import Student

									<!--通过as_view处理自动获取请求方式-->

									class index(View):

									    def get(self,request):

									        return render(request,'load.html')

									    def post(self,request):

									        name=request.POST.get('sname','')

									        photo=request.FILES.get('photo','')

									        age=request.POST.get('age','')

									        <!--进行校验 将文件名的后缀字符串分割 判断-->

									        extenedname=photo.name[photo.name.rindex('.')+1:]

									        allowedname=['jpg','png']

									        if extenedname not in  allowedname:

									            return Http404()

									        stu=Student.objects.create(sname=name,age=20,photo=photo)

									        if stu:

									            return HttpResponse('注册成功')

									        else:

									            return HttpResponseRedirect('/test/test/')

									def show(request):

									    stulist=Student.objects.all()

									    return render(request,'show.html',{'stulist':stulist})

创建模板

templates/index.html 注册界面

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									<!DOCTYPE html>

									<html lang="en">

									<head>

									    <meta charset="UTF-8">

									    <title>Title</title>

									</head>

									<body>

									    <form action="/test/test/"  method="post" enctype="multipart/form-data">

									        {% csrf_token %}

									        <p>姓名<input type="text" name="sname"></p>

									        <p>年龄 <input type="number" name="age"></p>

									        <p>照片 <input type="file" name="photo"></p>

									        <input type="submit" value="注册">

									    </form>

									</body>

									</html>

show.html 显示数据加载图片

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									<!DOCTYPE html>

									<html lang="en">

									<head>

									    <meta charset="UTF-8">

									    <title>Title</title>

									</head>

									<body>

									    <table border="1px solid black" cellspacing="0px" width="500px" align="center">

									        <tr height="100px" align="center">

									            <td >编号</td>

									            <td >姓名 </td>

									            <td >年龄</td>

									            <td >头像</td>

									        </tr>

									        {% for stu in stulist %}

									        <tr height="100px" align="center">

									            <td >{{ forloop.counter }} </td>

									            <td >{{ stu.sname }}</td>

									            <td >{{ stu.age }}</td>

									            <td ><img src="/media/{{ stu.photo }}" alt=""></td>

									            <!--读取photo的路径 在主路由访问 通过server处理并显示-->

									        </tr>

									        {% endfor %}

									    </table>

									</body>

									</html>