django框架中如何存图片到mysql,方法是什么

Admin 2022-06-16 群英技术资讯

这篇文章给大家介绍了“django框架中如何存图片到mysql,方法是什么”的相关知识,讲解详细,步骤过程清晰,有一定的借鉴学习价值,因此分享给大家做个参考,感兴趣的朋友接下来一起跟随小编看看吧。

小编使用python中的django框架来完成!

1,首先用pycharm创建django项目并配置相关环境

这里小编默认项目都会创建

settings.py中要修改的两处配置

DATABASES = {
    'default': {
        # 'ENGINE': 'django.db.backends.sqlite3',
        # 'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),

        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'photos',
        'HOST': '127.0.0.1',
        'PORT': '3306',
        'USER': 'root',
        'PASSWORD': '201314',

    }
}


STATIC_URL = '/static/'

STATICFILES_DIRS = [
    os.path.join(BASE_DIR, 'static')
]

2,创建表

①先按键盘上win+s键,然后输入cmd,中文输入法两下回车,英文输入法一下回车,即可进入dos窗口。

②输入 mysql -uroot -p密码 回车进入mysql数据库,再输入 create database 库名; 一个小回车,创建数据库


③在app下的models.py中创建表结构

models.py

from django.db import models

# Create your models here.


class Images(models.Model):
    img = models.ImageField(upload_to='static/pictures/')  # upload_to='static/pictures/'是指定图片存储的文件夹名称,上传文件之后会自动创建
    img_name = models.CharField(max_length=32)
    create_time = models.DateTimeField(auto_now_add=True)

④迁移数据库

分别按顺序在pycharm下面的Terminal中执行下面两条语句

python manage.py makemigrations

python manage.py migrate

3,上传图片功能

urls.py

from django.conf.urls import url
from django.contrib import admin
from app01 import views

urlpatterns = [
    url(r'^admin/$', admin.site.urls),
    url(r'^upload/$', views.upload, name='upload'),
]

views.py

from django.shortcuts import render, redirect
from app01 import models
# Create your views here.

def upload(request):
    error = ''
    if request.method == 'POST':
        img = request.FILES.get('img')
        pic_name = img.name
        if pic_name.split('.')[-1] == 'mp4':
            error = '暂不支持上传此格式图片!!!'
        else:
            models.Images.objects.create(img_name=pic_name, img=img)
            return redirect('show')
    return render(request, 'upload.html', locals())

前端上传页面upload.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>上传照片</title>
</head>
<body>
<div style="height: 160px">
    <form action="" method="post" enctype="multipart/form-data">
        {% csrf_token %}
        <h1>上传图片页面</h1>
        <table cellpadding="5px">
            <tr>
                <td>上传图片</td>
                <td><input type="file" name="img"></td>
            </tr>
            <tr>
                <td>
                    <button>上传</button>
                </td>
                <td><strong style="color: red">{{ error }}</strong></td>
            </tr>
        </table>
    </form>
</div>
<div style="text-align: center;color: #2b542c;font-size: 20px;">
    <a href=" {% url 'show' %} " rel="external nofollow" >返回</a>
</div>
</body>
</html>

4,展示图片功能

urls.py

"""
from django.conf.urls import url
from django.contrib import admin
from app01 import views

urlpatterns = [
    url(r'^admin/$', admin.site.urls),

    url(r'^upload/$', views.upload, name='upload'),
    url(r'^show/$', views.show, name='show'),

]

views.py

from django.shortcuts import render, redirect
from app01 import models


# Create your views here.


def upload(request):
    error = ''
    if request.method == 'POST':
        img = request.FILES.get('img')
        pic_name = img.name
        if pic_name.split('.')[-1] == 'mp4':
            error = '暂不支持上传此格式图片!!!'
        else:
            models.Images.objects.create(img_name=pic_name, img=img)
            return redirect('show')
    return render(request, 'upload.html', locals())


def show(request):
    all_images = models.Images.objects.all()
    # for i in all_images:
    #     print(i.img)
    return render(request, 'show.html', locals())

前端展示show.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>展示照片</title>
</head>
<body>
{% for image in all_images %}
    <img src="/{{ image.img }}" style="width: 240px;height: 240px;">
{% endfor %}
<br/>
<p style="text-align: center;color: #2b542c;font-size: 20px;">
    <a href="{% url 'upload' %}" rel="external nofollow"  rel="external nofollow" >返回</a>
</p>
</body>
</html>

5,删除图片功能

urls.py

from django.conf.urls import url
from django.contrib import admin
from app01 import views

urlpatterns = [
    url(r'^admin/$', admin.site.urls),

    url(r'^upload/$', views.upload, name='upload'),
    url(r'^show/$', views.show, name='show'),
    url(r'^delete/$', views.delete, name='delete'),

]

views.py

from django.shortcuts import render, redirect
from app01 import models


# Create your views here.


def upload(request):
    error = ''
    if request.method == 'POST':
        img = request.FILES.get('img')
        pic_name = img.name
        if pic_name.split('.')[-1] == 'mp4':
            error = '暂不支持上传此格式图片!!!'
        else:
            models.Images.objects.create(img_name=pic_name, img=img)
            return redirect('show')
    return render(request, 'upload.html', locals())


def show(request):
    all_images = models.Images.objects.all()
    # for i in all_images:
    #     print(i.img)
    return render(request, 'show.html', locals())


def delete(request):
    pk = request.GET.get('pk')
    models.Images.objects.filter(id=pk).delete()
    return redirect('show')

show.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>展示照片</title>
</head>
<body>
{% for image in all_images %}
    <img src="/{{ image.img }}" style="width: 240px;height: 240px;">
    <a href="/delete/?pk={{ image.id }}" rel="external nofollow" >删除</a>
{% endfor %}
<br/>
<p style="text-align: center;color: #2b542c;font-size: 20px;">
    <a href="{% url 'upload' %}" rel="external nofollow"  rel="external nofollow" >返回</a>
</p>
</body>
</html>

6,整体演示一遍


因为时间紧,故以最low方式简要实现,并没有加上漂亮的页面和样式,喜欢美的看客朋友可自行去Bootstrap官网或jq22自行添加!!!


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