将图片保存到mysql数据库并展示在前端页面的实现代码

程序员文章站 2022-06-18 21:33:08

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 = {...

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 表名; 一个小回车，创建数据库????

将图片保存到mysql数据库并展示在前端页面的实现代码

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

将图片保存到mysql数据库并展示在前端页面的实现代码

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>

将图片保存到mysql数据库并展示在前端页面的实现代码

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>

将图片保存到mysql数据库并展示在前端页面的实现代码

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>

将图片保存到mysql数据库并展示在前端页面的实现代码