MySQL と Python を使用して簡単なブログ システムを実装する方法

pip install mysql-connector-python

import mysql.connector

# 连接MySQL数据库
mydb = mysql.connector.connect(
  host="localhost",
  user="yourusername",
  password="yourpassword"
)

# 创建数据库
mycursor = mydb.cursor()
mycursor.execute("CREATE DATABASE blog")

# 使用数据库
mycursor.execute("USE blog")

# 创建博客表格
mycursor.execute("CREATE TABLE posts (id INT AUTO_INCREMENT PRIMARY KEY, title VARCHAR(255), content TEXT, author VARCHAR(255), publish_date DATE)")

import mysql.connector

class Blog:
    
    def __init__(self, host, user, password, database):
        # 连接MySQL数据库
        self.mydb = mysql.connector.connect(
          host=host,
          user=user,
          password=password,
          database=database
        )
        
        # 创建游标对象
        self.mycursor = self.mydb.cursor()
    
    def create_post(self, title, content, author, publish_date):
        # 插入博客数据到数据库
        sql = "INSERT INTO posts (title, content, author, publish_date) VALUES (%s, %s, %s, %s)"
        val = (title, content, author, publish_date)
        self.mycursor.execute(sql, val)
        
        # 提交事务
        self.mydb.commit()
        
    def get_all_posts(self):
        # 查询所有博客数据
        self.mycursor.execute("SELECT * FROM posts")
        result = self.mycursor.fetchall()
        
        # 返回查询结果
        return result
    
    def get_post_by_id(self, post_id):
        # 根据博客ID查询数据
        self.mycursor.execute("SELECT * FROM posts WHERE id = %s", (post_id,))
        result = self.mycursor.fetchone()
        
        # 返回查询结果
        return result

    def update_post(self, post_id, title, content, author, publish_date):
        # 更新博客数据
        sql = "UPDATE posts SET title = %s, content = %s, author = %s, publish_date = %s WHERE id = %s"
        val = (title, content, author, publish_date, post_id)
        self.mycursor.execute(sql, val)
        
        # 提交事务
        self.mydb.commit()
        
    def delete_post(self, post_id):
        # 删除博客数据
        self.mycursor.execute("DELETE FROM posts WHERE id = %s", (post_id,))
        
        # 提交事务
        self.mydb.commit()

blog = Blog("localhost", "yourusername", "yourpassword", "blog")

# 创建博客
blog.create_post("第一篇博客", "这是我的第一篇博客内容", "作者A", "2021-01-01")

# 获取所有博客
posts = blog.get_all_posts()
for post in posts:
    print(post)

# 获取指定ID的博客
post = blog.get_post_by_id(1)
print(post)

# 更新博客
blog.update_post(1, "更新后的博客标题", "更新后的博客内容", "作者B", "2021-02-01")

# 删除博客
blog.delete_post(1)