flask读取数据库(mysql)并展示表格（讲解获取表头的方法）【附上flask好看点的helloworld】_flask读取数据库(mysql)读取数据展示多页表格

作者：IT小白 | 2024-02-23 08:07:57

踩

flask读取数据库(mysql)读取数据展示多页表格

简述

为了网页的好看，最好还是用bootstrap

文章目录

好看点的helloworld

anyway,先看初始版本的 helloworld

/template/index.html
来自于bootstrap官网

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

    <title>Hello, world!</title>
  </head>
  <body>
    <h1>Hello, world!</h1>

    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
  </body>
</html>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

./app.py

from flask import Flask, render_template

app = Flask(__name__)


@app.route('/')
def hello_world():
    return render_template('index.html')


if __name__ == '__main__':
    app.run()
1
2
3
4
5
6
7
8
9
10
11
12

在这里插入图片描述

链接数据库

这里我推荐使用pymysql
因为这个在不同平台上都可以使用，而且安装也没什么坑。

pip install pymysql
1

链接的示范
- conn是一个连接器
- host是url
- user是用户
- password是密码
- db是数据库（也就是show databases;可以看到的）
- charset主要是为了设置为可以看中文

import pymysql


conn = pymysql.connect(
    host='127.0.0.1',
    user='root',
    password='1234',
    db='library_management_system',
    charset='utf8'
)
1
2
3
4
5
6
7
8
9
10

结合在html上和flask上

html代码修改

/templates/index.html

<!doctype html>
<html lang="en">
<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
          integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

    <title>Hello, world!</title>
</head>
<body>
<div class="row">
    <div class="col-md-6 col-sm-12 col-xs-12">
        <div class="panel panel-default">
            <div class="panel-heading">
                <h3>Students</h3>
            </div>
            <div class="panel-body">
                <div class="table-responsive">
                    <table class="table table-striped table-bordered table-hover">
                        <thead>
                        <tr>
                            {% for i in labels %}
                                <td>{{ i }}</td>
                            {% endfor %}
                        </tr>
                        </thead>
                        <tbody>
                        {% for i in content %}
                            <tr>
                                {% for j in i %}
                                    <td>{{ j }}</td>
                                {% endfor %}
                            </tr>
                        {% endfor %}
                        </tbody>
                    </table>
                </div>
            </div>
        </div>

    </div>

</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"
        integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
        crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"
        integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
        crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
        integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
        crossorigin="anonymous"></script>
</body>
</html>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

app.py

from flask import Flask, render_template
import pymysql

app = Flask(__name__)

conn = pymysql.connect(
    host='127.0.0.1',
    user='root',
    password='1234',
    db='jxgl',
    charset='utf8'
)


@app.route('/')
def hello_world():
    cur = conn.cursor()

    # get annual sales rank
    sql = "select * from student"
    cur.execute(sql)
    content = cur.fetchall()

	# 获取表头
    sql = "SHOW FIELDS FROM student"
    cur.execute(sql)
    labels = cur.fetchall()
    labels = [l[0] for l in labels]

    return render_template('index.html', labels=labels, content=content)


if __name__ == '__main__':
    app.run()

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

效果:

在这里插入图片描述

声明：本文内容由网友自发贡献，不代表【wpsshop博客】立场，版权归原作者所有，本站不承担相应法律责任。如您发现有侵权的内容，请联系我们。转载请注明出处：https://www.wpsshop.cn/w/IT小白/article/detail/134918