python3爬虫+php+mysql简单应用

简介

做一个结合python3+php+mysql的简单应用，实现python爬取一部电影的豆瓣评分，我选取的是看不见的客人 Il testimone invisibile (2018)，目前的评分是9.0分。

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步骤

1、首先用python爬虫爬取评分数据

2、将数据存到mysql数据表中

3、用php读取mysql数据表

4、前端显示评分数据

以后就可以愉快地实现各种语言之间的数据交互啦。

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1、用python写简单爬虫获取电影评分，并将评分写入到数据库中

import pymysql
import requests
import re

html = requests.get('https://movie.douban.com/subject/30384019/').text
score = re.findall(r'(.*)', html)
score = score[0]

# 数据库host和密码用自己的
db = pymysql.connect(host='*.*.*.*', user='root', password='******', port=3306, db='test')
cursor = db.cursor()

#如果存在SCORE表，就删除
cursor.execute("DROP TABLE IF EXISTS SCORE")
sql = """CREATE TABLE SCORE (
         score VARCHAR(40) NOT NULL
         )"""
cursor.execute(sql)

# SQL 插入语句
sql = """INSERT INTO SCORE(score) VALUES (%s)"""
try:
   # 执行sql语句
   cursor.execute(sql, score)
   # 提交到数据库执行
   db.commit()
except:
   # 如果发生错误则回滚
   db.rollback()
    
db.close()

2、终端数据库操作实例

可以看到评分已经存入进去了

[root@VM_0_14_centos test]# python3 get_score.py
[root@VM_0_14_centos test]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 82
Server version: 5.7.26 MySQL Community Server (GPL)

Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| RUNOOB             |
| mysql              |
| performance_schema |
| sys                |
| test               |
+--------------------+
6 rows in set (0.00 sec)

mysql> use test
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> show tables
    -> ;
+----------------+
| Tables_in_test |
+----------------+
| SCORE          |
+----------------+
1 row in set (0.00 sec)

mysql> select * from SCORE;
+-------+
| score |
+-------+
| 9.0   |
+-------+
1 row in set (0.00 sec)

mysql> exit
Bye
[root@VM_0_14_centos test]# 

3、php读取MySQL数据，并显示

MySQL测试python+php+mysql
';
echo '';
while($row = mysqli_fetch_assoc($retval))
{
    echo " ".
         "";
}
echo '
电影评分
 {$row['score']}
';
mysqli_close($conn);
?>

如图，测试成功（略丑。。。）