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    django将图片保存到mysql数据库并展示在前端页面的实现

    作者:跟着哈哥学大智若愚 时间:2021-06-10 18:32

    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🆗

    在这里插入图片描述

    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
    

    在这里插入图片描述

    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>

    在这里插入图片描述

    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>
    

    在这里插入图片描述

    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>

    在这里插入图片描述

    6,整体演示一遍

    在这里插入图片描述

    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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