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python
import pymysql.cursors
from pymysql.err import OperationalError
from data.readCsv import Csv_to_lst
import os
import configparser as cparser
base_dir = str(os.path.dirname(os.path.dirname(__file__)))
base_dir = base_dir.replace('\\','/')
file_path = base_dir + "/db_config.ini"
event_Path = base_dir + '/data/event_data.csv'
guest_Path = base_dir + '/data/guest_data.csv'
cf = cparser.ConfigParser()
cf.read(file_path)
host = cf.get("mysqlconf","host")
port = cf.get("mysqlconf","port")
user = cf.get("mysqlconf","user")
password = cf.get("mysqlconf","password")
db = cf.get("mysqlconf","db_name")
class DB:
def __init__(self):
try:
self.conn = pymysql.connect(
host=host,
user=user,
password=password,
port=int(port),
db=db,
charset='utf8mb4',
cursorclass=pymysql.cursors.DictCursor
)
self.cursor = self.conn.cursor()
except pymysql.err.OperationalError as e:
print("Mysql Error %d : %s"%(e.args[0],e.args[1]))
def execute(self,sql):
print(sql)
self.cursor.execute(sql)
rowcount = self.cursor.rowcount
return rowcount
def clear(self,table_name):
real_sql1 = "SET FOREIGN_KEY_CHECKS=0;"
real_sql2 = "TRUNCATE "+ table_name +";"
self.execute(real_sql1)
self.execute(real_sql2)
self.conn.commit()
def insert(self,table_name,table_data): # table_data是字典格式的数据
for key in table_data:
table_data[key] = "'"+str(table_data[key])+"'"
key = ','.join(table_data.keys())
value = ','.join(table_data.values())
real_sql = "INSERT INTO " + table_name + "(" +key + ") VALUES (" + value + ") ;"
self.execute(real_sql)
self.conn.commit()
def delete(self,table_name,data):
global temp
for k,v in data.items():
i = int(len(v))
if i!=0:
if i==1:
temp = k +" = " + "'"+str(v[0])+"'"
elif i>1:
s=str(v).replace('[','(').replace(']',')')
temp = k +" in " + s
real_sql = "DELETE FROM " +table_name+ " WHERE "+temp
self.execute(real_sql)
self.conn.commit()
def update(self,table_name,data,condition):
# data = {'name': '小米14发布会2', 'address': '某某会议中心','start_time': '2023-08-20 00:25:42'}
# update('my_table', data, condition="id in (1,2)")
global real_sql
set_lst = []
for k, v in data.items():
temp = k + "=" + "'" + str(v) + "'"
set_lst.append(temp)
set = ','.join(set_lst)
if (table_name != '')and(set != ''):
if condition != '':
real_sql = "UPDATE " + table_name + " SET " + set + " WHERE " + condition+ " ; "
elif condition == '':
real_sql = "UPDATE " + table_name + " SET " + set + " ; "
self.execute(real_sql)
self.conn.commit()
def select(self,table_name,field,condition,top):
global data
real_sql = "SELECT " + field + " FROM " + table_name + " WHERE " + condition + ";"
self.execute(real_sql)
if top == 1:
data = self.cursor.fetchone()
elif 1<top:
data = self.cursor.fetchmany(top)
elif top<1:
data = self.cursor.fetchall()
return data
def close(self):
self.conn.close()
# 批量插入csv文件的数据
def init_data(self,table_name,file_path):
self.clear(table_name)
obj = Csv_to_lst(file_path)
data = obj.read_data()
key = obj.read_header()
for value in data:
real_sql = "INSERT INTO " + table_name + "(" + key + ") VALUES (" + value + ") ;"
self.execute(real_sql)
self.conn.commit()
if __name__ == '__main__':
table_name = "sign_event"
table_name2 = "sign_guest"
db = DB()
# 导入csv表格的数据
# db.clear(table_name)
# db.clear(table_name2)
# db.init_data(table_name,event_Path)
# db.init_data(table_name2,guest_Path)
# 插入数据
# data = {'name': '小米14发布会2', '`limit`': 1000, 'status': 1, 'address': '某某会议中心',
# 'start_time': '2023-08-20 00:25:42'}
# data2 = {'realname': '张三2', 'phone': 12312341217, 'email': 'XX1@mail.com', 'sign': 0, 'event_id': 8}
# db.insert(table_name,data)
# db.insert(table_name2,data2)
# 更新数据
# set_event = {'name': '小米14发布会', 'address': '某某会议中心','start_time': '2023-08-22 00:25:42'}
# db.update(table_name,set_event,condition="id in (1,2)")
# set_guest = {'sign':1}
# db.update(table_name2,set_guest,condition='event_id=1 and sign=0')
# 删除数据
# del_data={'id':[7,8]}
# db.delete(table_name,del_data)
# db.delete(table_name2,del_data)
# 查询数据
select_data = db.select(table_name2,'*',"sign='0'",3)
print(select_data)