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django將圖片保存到mysql數據庫并展示在前端頁面的實現

小編使用python中的django框架來完成！

1，首先用pycharm創建django項目并配置相關環境

這里小編默認項目都會創建

settings.py中要修改的兩處配置

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，創建表

①先按鍵盤上win+s鍵，然后輸入cmd，中文輸入法兩下回車，英文輸入法一下回車，即可進入dos窗口。

②輸入 mysql -uroot -p密碼回車進入mysql數據庫，再輸入 create database 庫名; 一個小回車，創建數據庫🆗

③在app下的models.py中創建表結構

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/'是指定圖片存儲的文件夾名稱，上傳文件之后會自動創建
    img_name = models.CharField(max_length=32)
    create_time = models.DateTimeField(auto_now_add=True)

④遷移數據庫

分別按順序在pycharm下面的Terminal中執行下面兩條語句

python manage.py makemigrations

python manage.py migrate

3，上傳圖片功能

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 = '暫不支持上傳此格式圖片！！！'
        else:
            models.Images.objects.create(img_name=pic_name, img=img)
            return redirect('show')
    return render(request, 'upload.html', locals())

前端上傳頁面upload.html

!DOCTYPE html>
html lang="en">
head>
    meta charset="UTF-8">
    title>上傳照片/title>
/head>
body>
div style="height: 160px">
    form action="" method="post" enctype="multipart/form-data">
        {% csrf_token %}
        h1>上傳圖片頁面/h1>
        table cellpadding="5px">
            tr>
                td>上傳圖片/td>
                td>input type="file" name="img">/td>
            /tr>
            tr>
                td>
                    button>上傳/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，展示圖片功能

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 = '暫不支持上傳此格式圖片！！！'
        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，刪除圖片功能

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 = '暫不支持上傳此格式圖片！！！'
        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" >刪除/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>