export data to DB

MySQLHelper.py

@@ -0,0 +1,135 @@
+import pymysql
+from pymysql import Error
+from typing import List, Dict, Union, Optional, Tuple
+
+class MySQLHelper:
+    def __init__(self, host: str, user: str, password: str, database: str, 
+                 port: int = 3306, charset: str = 'utf8mb4'):
+        """
+        初始化MySQL连接参数
+        :param host: 数据库地址
+        :param user: 用户名
+        :param password: 密码
+        :param database: 数据库名
+        :param port: 端口，默认3306
+        :param charset: 字符集，默认utf8mb4
+        """
+        self.host = host
+        self.user = user
+        self.password = password
+        self.database = database
+        self.port = port
+        self.charset = charset
+        self.connection = None
+        self.cursor = None
+
+    def connect(self) -> bool:
+        """
+        连接到MySQL数据库
+        :return: 连接成功返回True，失败返回False
+        """
+        try:
+            self.connection = pymysql.connect(
+                host=self.host,
+                user=self.user,
+                password=self.password,
+                database=self.database,
+                port=self.port,
+                charset=self.charset,
+                cursorclass=pymysql.cursors.DictCursor  # 返回字典形式的结果
+            )
+            self.cursor = self.connection.cursor()
+            print("MySQL数据库连接成功")
+            return True
+        except Error as e:
+            print(f"连接MySQL数据库失败: {e}")
+            return False
+
+    def close(self) -> None:
+        """
+        关闭数据库连接
+        """
+        if self.cursor:
+            self.cursor.close()
+        if self.connection:
+            self.connection.close()
+        print("MySQL数据库连接已关闭")
+
+    def execute_query(self, sql: str, params: Union[Tuple, List, Dict, None] = None) -> List[Dict]:
+        """
+        执行查询操作
+        :param sql: SQL语句
+        :param params: 参数，可以是元组、列表或字典
+        :return: 查询结果列表
+        """
+        try:
+            self.cursor.execute(sql, params)
+            return self.cursor.fetchall()
+        except Error as e:
+            print(f"查询执行失败: {e}")
+            return []
+
+    def execute_update(self, sql: str, params: Union[Tuple, List, Dict, None] = None) -> int:
+        """
+        执行更新操作（INSERT/UPDATE/DELETE）
+        :param sql: SQL语句
+        :param params: 参数，可以是元组、列表或字典
+        :return: 影响的行数
+        """
+        try:
+            affected_rows = self.cursor.execute(sql, params)
+            self.connection.commit()
+            return affected_rows
+        except Error as e:
+            self.connection.rollback()
+            print(f"更新执行失败: {e}")
+            return 0
+
+    def execute_many(self, sql: str, params_list: List[Union[Tuple, List, Dict]]) -> int:
+        """
+        批量执行操作
+        :param sql: SQL语句
+        :param params_list: 参数列表
+        :return: 影响的行数
+        """
+        try:
+            affected_rows = self.cursor.executemany(sql, params_list)
+            self.connection.commit()
+            return affected_rows
+        except Error as e:
+            self.connection.rollback()
+            print(f"批量执行失败: {e}")
+            return 0
+
+    def get_one(self, sql: str, params: Union[Tuple, List, Dict, None] = None) -> Optional[Dict]:
+        """
+        获取单条记录
+        :param sql: SQL语句
+        :param params: 参数，可以是元组、列表或字典
+        :return: 单条记录或None
+        """
+        try:
+            self.cursor.execute(sql, params)
+            return self.cursor.fetchone()
+        except Error as e:
+            print(f"获取单条记录失败: {e}")
+            return None
+
+    def table_exists(self, table_name: str) -> bool:
+        """
+        检查表是否存在
+        :param table_name: 表名
+        :return: 存在返回True，否则返回False
+        """
+        sql = "SHOW TABLES LIKE %s"
+        result = self.execute_query(sql, (table_name,))
+        return len(result) > 0
+
+    def __enter__(self):
+        """支持with上下文管理"""
+        self.connect()
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        """支持with上下文管理"""
+        self.close()