101 lines
2.9 KiB
Python
101 lines
2.9 KiB
Python
# -*- coding:utf-8 -*-
|
|
|
|
import pymysql
|
|
import pymysql.cursors
|
|
import logging
|
|
from app.comm import *
|
|
|
|
class TableDbHelperBase:
|
|
def __init__(self, pool):
|
|
self.db_pool = pool
|
|
self.DB_Name = ''
|
|
return
|
|
|
|
def set_dbname(self, dbname: str):
|
|
"""重新设定数据库名称"""
|
|
self.DB_Name = dbname
|
|
|
|
def close(self, conn, cursor):
|
|
cursor.close()
|
|
conn.close()
|
|
|
|
def connect(self):
|
|
conn, cursor, e = self.db_pool.connect(self.DB_Name)
|
|
return conn, cursor
|
|
|
|
def show_tables(self):
|
|
sql = "show tables;"
|
|
conn, cursor = self.connect()
|
|
cursor.execute(sql)
|
|
results = cursor.fetchall()
|
|
for item in results:
|
|
print(item)
|
|
self.close(conn, cursor)
|
|
|
|
def transaction_begin(self):
|
|
conn, cursor = self.connect()
|
|
conn.autocommit = False
|
|
conn.begin()
|
|
return conn, cursor
|
|
|
|
def transaction_commit(self, conn, cursor):
|
|
conn.commit()
|
|
conn.autocommit = True
|
|
self.close(conn, cursor)
|
|
|
|
def transaction_rollback(self, conn, cursor):
|
|
conn.rollback()
|
|
conn.autocommit = True
|
|
self.close(conn, cursor)
|
|
|
|
def do_select(self, sql_query):
|
|
"""
|
|
通用的执行select语句的函数
|
|
:param sql_query: SQL语句
|
|
:return: 返回Dict数组
|
|
"""
|
|
logging.info(sql_query)
|
|
return self.db_pool.do_select(sql_query, self.DB_Name)
|
|
|
|
|
|
|
|
def do_execute(self, sql_update, cursor=None):
|
|
"""执行更新或删除操作，返回是否操作成功"""
|
|
try:
|
|
logging.info(sql_update)
|
|
if cursor:
|
|
ret = cursor.execute(sql_update) # 影响行数
|
|
return ret
|
|
conn, cursor = self.connect()
|
|
ret = cursor.execute(sql_update) # 影响行数
|
|
conn.commit()
|
|
except pymysql.Error as e:
|
|
# 捕获 PyMySQL 异常
|
|
print(f"do_execute '{sql_update}' Error: {e}")
|
|
logging.error(f"do_execute '{sql_update}' Error: {e}")
|
|
return 0
|
|
return ret
|
|
|
|
def do_executemany(self, sql, data_list, cursor=None):
|
|
try:
|
|
logging.info(f"sql = {sql}, data_list = {data_list}")
|
|
if cursor:
|
|
ret = cursor.executemany(sql, data_list)
|
|
return ret
|
|
conn, cursor = self.connect()
|
|
ret = cursor.executemany(sql, data_list)
|
|
conn.commit()
|
|
except pymysql.Error as e:
|
|
print(f"do_execute '{sql}' Error: {e}")
|
|
logging.error(f"do_execute '{sql}' Error: {e}")
|
|
return 0
|
|
return ret
|
|
|
|
|
|
def do_update(self, table, field, value, where_field, where_value):
|
|
sql_update = "update %s set %s='%s' where %s='%s'" % (table, field, value, where_field, where_value)
|
|
return self.do_execute(sql_update)
|
|
|
|
|
|
|