Flask数据连接池 DBUtils
settting配置
from DBUtils.PooledDB import PooledDB, SharedDBConnection
import pymysql
class Config(object):
SALT = b"sdf1123df"
SECRET_KEY = 'asdf123sdfsdfsdf'
MAX_CONTENT_LENGTH = 1024 * 1024 * 7
POOL = PooledDB(
creator=pymysql, # 使用链接数据库的模块
maxconnections=6, # 连接池允许的最大连接数,0和None表示不限制连接数
mincached=2, # 初始化时,链接池中至少创建的空闲的链接,0表示不创建
maxcached=5, # 链接池中最多闲置的链接,0和None不限制
maxshared=3,
# 链接池中最多共享的链接数量,0和None表示全部共享。PS: 无用,因为pymysql和MySQLdb等模块的 threadsafety都为1,所有值无论设置为多少,_maxcached永远为0,所以永远是所有链接都共享。
blocking=True, # 连接池中如果没有可用连接后,是否阻塞等待。True,等待;False,不等待然后报错
maxusage=None, # 一个链接最多被重复使用的次数,None表示无限制
setsession=[], # 开始会话前执行的命令列表。如:["set datestyle to ...", "set time zone ..."]
ping=0,
# ping MySQL服务端,检查是否服务可用。# 如:0 = None = never, 1 = default = whenever it is requested, 2 = when a cursor is created, 4 = when a query is executed, 7 = always
host='127.0.0.1',
port=3306,
user='root',
password='0520',
database='bbss',
charset='utf8'
)
import pymysql
from settings import Config
def connect():
conn = Config.POOL.connection()
cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
return conn,cursor
def connect_close(conn,cursor):
cursor.close()
conn.close()
def fetch_all(sql,args):
conn,cursor = connect()
cursor.execute(sql, args)
record_list = cursor.fetchall()
connect_close(conn,cursor)
return record_list
def fetch_one(sql, args):
conn, cursor = connect()
cursor.execute(sql, args)
result = cursor.fetchone()
connect_close(conn, cursor)
return result
def insert(sql, args):
conn, cursor = connect()
row = cursor.execute(sql, args)
conn.commit()
connect_close(conn, cursor)
return row
from flask import Blueprint, render_template, Flask, request, redirect,session
import os
import uuid
from ..utils import helper
ind = Blueprint('ind', __name__)
@ind.before_request
def process_request():
if not session.get("user_info"):
return redirect("/login")
return None
@ind.route('/home')
def home():
return render_template('home.html')
@ind.route('/user_list')
def user_list():
# import pymysql
# conn = pymysql.Connect(host='127.0.0.1', user='root', password='123456', database='s9day118', charset='utf8')
# cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
# cursor.execute("SELECT id,user,nickname FROM userinfo")
# data_list = cursor.fetchall()
# cursor.close()
# conn.close()
data_list = helper.fetch_all("SELECT id,user,nickname FROM userinfo",[])
return render_template('user_list.html',data_list=data_list)
@ind.route('/detail/<int:nid>')
def detail(nid):
# import pymysql
# conn = Config.POOL.connection()
# cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
# cursor.execute("SELECT id,line,ctime FROM record where user_id=%s",(nid,))
# record_list = cursor.fetchall()
# cursor.close()
# conn.close()
record_list = helper.fetch_all("SELECT id,line,ctime FROM record where user_id=%s",(nid,))
return render_template('detail.html',record_list=record_list)
@ind.route('/upload',methods=['GET','POST'])
def upload():
if request.method == "GET":
return render_template('upload.html')
from werkzeug.datastructures import FileStorage
file_obj = request.files.get('code')
# 1. 检查上传文件后缀名
name_ext = file_obj.filename.rsplit('.',maxsplit=1)
if len(name_ext) != 2:
return "请上传zip压缩文件"
if name_ext[1] != 'zip':
return "请上传zip压缩文件"
"""
# 2. 接收用户上传文件,并写入到服务器本地.
file_path = os.path.join("files",file_obj.filename)
# 从file_obj.stream中读取内容,写入到文件
file_obj.save(file_path)
# 3. 解压zip文件
import shutil
# 通过open打开压缩文件,读取内容再进行解压。
shutil._unpack_zipfile(file_path,'xsadfasdfasdf')
"""
# 2+3, 接收用户上传文件,并解压到指定目录
import shutil
target_path = os.path.join('files',str(uuid.uuid4()))
shutil._unpack_zipfile(file_obj.stream,target_path)
# 4. 遍历某目录下的所有文件
# for item in os.listdir(target_path):
# print(item)
total_num = 0
for base_path,folder_list,file_list in os.walk(target_path):
for file_name in file_list:
file_path = os.path.join(base_path,file_name)
file_ext = file_path.rsplit('.',maxsplit=1)
if len(file_ext) != 2:
continue
if file_ext[1] != 'py':
continue
file_num = 0
with open(file_path,'rb') as f:
for line in f:
line = line.strip()
if not line:
continue
if line.startswith(b'#'):
continue
file_num += 1
total_num += file_num
# 获取当前时间
import datetime
ctime = datetime.date.today()
print(total_num,ctime,session['user_info']['id'])
# import pymysql
# conn = pymysql.Connect(host='127.0.0.1', user='root', password='123456', database='s9day118', charset='utf8')
# cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
# cursor.execute("select id from record where ctime=%s and user_id=%s",(ctime,session['user_info']['id']))
# data = cursor.fetchone()
# cursor.close()
# conn.close()
data = helper.fetch_one("select id from record where ctime=%s and user_id=%s",(ctime,session['user_info']['id']))
if data:
return "今天已经上传"
# import pymysql
# conn = pymysql.Connect(host='127.0.0.1', user='root', password='123456', database='s9day118', charset='utf8')
# cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
# cursor.execute("insert into record(line,ctime,user_id)values(%s,%s,%s)",(total_num,ctime,session['user_info']['id']))
# conn.commit()
# cursor.close()
# conn.close()
helper.insert("insert into record(line,ctime,user_id)values(%s,%s,%s)",(total_num,ctime,session['user_info']['id']))
return "上传成功"