基于Python的图书馆可视化管理系统【源码+LW+部署讲解】

作者主页：编程千纸鹤

作者简介：Java领域优质创作者、CSDN博客专家 、CSDN内容合伙人、掘金特邀作者、阿里云博客专家、51CTO特邀作者、多年架构师设计经验、多年校企合作经验，被多个学校常年聘为校外企业导师，指导学生毕业设计并参与学生毕业答辩指导，有较为丰富的相关经验。期待与各位高校教师、企业讲师以及同行交流合作

主要内容：Java项目、Python项目、前端项目、PHP、ASP.NET、人工智能与大数据、单片机开发、物联网设计与开发设计、简历模板、学习资料、面试题库、技术互助、就业指导等

业务范围：免费功能设计、开题报告、任务书、中期检查PPT、系统功能实现、代码编写、论文编写和辅导、论文降重、长期答辩答疑辅导、腾讯会议一对一专业讲解辅导答辩、模拟答辩演练、和理解代码逻辑思路等。

收藏点赞不迷路  关注作者有好处

文末获取源码 

项目编号：BS-Python-046

一，环境介绍

语言环境：Python3.8

数据库：Mysql: mysql5.7

WEB框架：Django

开发工具：IDEA或PyCharm

二，项目简介

随着计算机技术发展，计算机系统的应用已延伸到社会的各个领域，大量基于网络的广泛应用给生活带来了十分的便利。所以把图书馆可视化管理与现在网络相结合，利用计算机搭建图书馆可视化管理系统。对于进一步提高图书馆可视化管理发展，丰富图书馆可视化管理经验能起到不少的促进作用。

系统阐述的是一款图书馆可视化管理系统的设计与实现，对于Python、B/S结构、MySql进行了较为深入的学习与应用。主要针对系统的设计，描述，实现和分析与测试方面来表明开发的过程。开发中使用了 django框架和MySql数据库技术搭建系统的整体架构。利用这些技术结合实际需求开发了具有个人中心、用户管理、图书分类管理、图书信息管理、图书借阅管理、座位信息管理、预定信息管理、系统管理等功能的系统，最后对系统进行相应的测试，测试系统有无存在问题以及测试用户权限来优化系统，最后系统达到预期目标。

整个的系统的开发运用Python技术， django框架，以及MySql数据库技术的大力支持下同步完成该系统的开发，实现了图书馆可视化管理的信息化，使管理者在操作思路清晰且更加方便，用户也可以体验到更加便捷的图书馆可视化管理，内容目标如下。

（1）减少后台管理人员的工作量，对用户的信息进行系统的管理；

（2）必须要方便快捷的查看搜索信息并管理信息；

（3）用户是具有多样性的，所以界面要设置的简单明了，操作更要方便快捷。

（4）编写开发系统的技术文件。

（5）对系统进行了系统测试。

管理员用例

用户用例

三，系统展示

四，核心代码展示

#coding:utf-8
__author__ = "ila"
import base64, copy, logging, os, sys, time, xlrd, json, datetime, configparser
from django.http import JsonResponse
from django.apps import apps
from django.db.models.aggregates import Count,Sum
from .models import news
from util.codes import *
from util.auth import Auth
from util.common import Common
import util.message as mes
from django.db import connection
import random
from django.core.mail import send_mail
from django.conf import settings
from django.shortcuts import redirect
from django.db.models import Q
from util.baidubce_api import BaiDuBce
from .config_model import config







def news_register(request):
    if request.method in ["POST", "GET"]:
        msg = {'code': normal_code, "msg": mes.normal_code}
        req_dict = request.session.get("req_dict")


        error = news.createbyreq(news, news, req_dict)
        if error != None:
            msg['code'] = crud_error_code
            msg['msg'] = "用户已存在,请勿重复注册!"
        return JsonResponse(msg)

def news_login(request):
    if request.method in ["POST", "GET"]:
        msg = {'code': normal_code, "msg": mes.normal_code}
        req_dict = request.session.get("req_dict")

        datas = news.getbyparams(news, news, req_dict)
        if not datas:
            msg['code'] = password_error_code
            msg['msg'] = mes.password_error_code
            return JsonResponse(msg)
        try:
            __sfsh__= news.__sfsh__
        except:
            __sfsh__=None

        if  __sfsh__=='是':
            if datas[0].get('sfsh')!='是':
                msg['code']=other_code
                msg['msg'] = "账号已锁定，请联系管理员审核!"
                return JsonResponse(msg)
                
        req_dict['id'] = datas[0].get('id')


        return Auth.authenticate(Auth, news, req_dict)


def news_logout(request):
    if request.method in ["POST", "GET"]:
        msg = {
            "msg": "登出成功",
            "code": 0
        }

        return JsonResponse(msg)


def news_resetPass(request):
    '''
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code}

        req_dict = request.session.get("req_dict")

        columns=  news.getallcolumn( news, news)

        try:
            __loginUserColumn__= news.__loginUserColumn__
        except:
            __loginUserColumn__=None
        username=req_dict.get(list(req_dict.keys())[0])
        if __loginUserColumn__:
            username_str=__loginUserColumn__
        else:
            username_str=username
        if 'mima' in columns:
            password_str='mima'
        else:
            password_str='password'

        init_pwd = '123456'
        recordsParam = {}
        recordsParam[username_str] = req_dict.get("username")
        records=news.getbyparams(news, news, recordsParam)
        if len(records)<1:
            msg['code'] = 400
            msg['msg'] = '用户不存在'
            return JsonResponse(msg)

        eval('''news.objects.filter({}='{}').update({}='{}')'''.format(username_str,username,password_str,init_pwd))
        
        return JsonResponse(msg)



def news_session(request):
    '''
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code,"msg": mes.normal_code, "data": {}}

        req_dict={"id":request.session.get('params').get("id")}
        msg['data']  = news.getbyparams(news, news, req_dict)[0]

        return JsonResponse(msg)


def news_default(request):

    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code,"msg": mes.normal_code, "data": {}}
        req_dict = request.session.get("req_dict")
        req_dict.update({"isdefault":"是"})
        data=news.getbyparams(news, news, req_dict)
        if len(data)>0:
            msg['data']  = data[0]
        else:
            msg['data']  = {}
        return JsonResponse(msg)

def news_page(request):
    '''
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code,  "data":{"currPage":1,"totalPage":1,"total":1,"pageSize":10,"list":[]}}
        req_dict = request.session.get("req_dict")

        global news

        #获取全部列名
        columns=  news.getallcolumn( news, news)

        #当前登录用户所在表
        tablename = request.session.get("tablename")


            #authColumn=list(__authTables__.keys())[0]
            #authTable=__authTables__.get(authColumn)

            # if authTable==tablename:
                #params = request.session.get("params")
                #req_dict[authColumn]=params.get(authColumn)

        '''__authSeparate__此属性为真，params添加userid，后台只查询个人数据'''
        try:
            __authSeparate__=news.__authSeparate__
        except:
            __authSeparate__=None

        if __authSeparate__=="是":
            tablename=request.session.get("tablename")
            if tablename!="users" and 'userid' in columns:
                try:
                    req_dict['userid']=request.session.get("params").get("id")
                except:
                    pass

        #当项目属性hasMessage为”是”，生成系统自动生成留言板的表messages，同时该表的表属性hasMessage也被设置为”是”,字段包括userid（用户id），username(用户名)，content（留言内容），reply（回复）
        #接口page需要区分权限，普通用户查看自己的留言和回复记录，管理员查看所有的留言和回复记录
        try:
            __hasMessage__=news.__hasMessage__
        except:
            __hasMessage__=None
        if  __hasMessage__=="是":
            tablename=request.session.get("tablename")
            if tablename!="users":
                req_dict["userid"]=request.session.get("params").get("id")



        # 判断当前表的表属性isAdmin,为真则是管理员表
        # 当表属性isAdmin=”是”,刷出来的用户表也是管理员，即page和list可以查看所有人的考试记录(同时应用于其他表)
        __isAdmin__ = None

        allModels = apps.get_app_config('main').get_models()
        for m in allModels:
            if m.__tablename__==tablename:

                try:
                    __isAdmin__ = m.__isAdmin__
                except:
                    __isAdmin__ = None
                break

        # 当前表也是有管理员权限的表
        if  __isAdmin__ == "是" and 'news' != 'forum':
            if req_dict.get("userid") and 'news' != 'chat':
                del req_dict["userid"]

        else:
            #非管理员权限的表,判断当前表字段名是否有userid
            if tablename!="users" and 'news'[:7]!='discuss'and "userid" in news.getallcolumn(news,news):
                req_dict["userid"] = request.session.get("params").get("id")

        #当列属性authTable有值(某个用户表)[该列的列名必须和该用户表的登陆字段名一致]，则对应的表有个隐藏属性authTable为”是”，那么该用户查看该表信息时，只能查看自己的
        try:
            __authTables__=news.__authTables__
        except:
            __authTables__=None

        if __authTables__!=None and  __authTables__!={} and __isAdmin__ == "是":
            try:
                del req_dict['userid']
                # tablename=request.session.get("tablename")
                # if tablename=="users":
                    # del req_dict['userid']
                
            except:
                pass
            for authColumn,authTable in __authTables__.items():
                if authTable==tablename:
                    params = request.session.get("params")
                    req_dict[authColumn]=params.get(authColumn)
                    username=params.get(authColumn)
                    break


        q = Q()

        msg['data']['list'], msg['data']['currPage'], msg['data']['totalPage'], msg['data']['total'], \
        msg['data']['pageSize']  =news.page(news, news, req_dict, request, q)

        return JsonResponse(msg)

def news_autoSort(request):
    '''
    ．智能推荐功能(表属性：[intelRecom（是/否）],新增clicktime[前端不显示该字段]字段（调用info/detail接口的时候更新），按clicktime排序查询)
主要信息列表（如商品列表，新闻列表）中使用，显示最近点击的或最新添加的5条记录就行
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code,  "data":{"currPage":1,"totalPage":1,"total":1,"pageSize":10,"list":[]}}
        req_dict = request.session.get("req_dict")
        if "clicknum"  in news.getallcolumn(news,news):
            req_dict['sort']='clicknum'
        elif "browseduration"  in news.getallcolumn(news,news):
            req_dict['sort']='browseduration'
        else:
            req_dict['sort']='clicktime'
        req_dict['order']='desc'
        msg['data']['list'], msg['data']['currPage'], msg['data']['totalPage'], msg['data']['total'], \
        msg['data']['pageSize']  = news.page(news,news, req_dict)

        return JsonResponse(msg)


def news_list(request):
    '''
    前台分页
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code,  "data":{"currPage":1,"totalPage":1,"total":1,"pageSize":10,"list":[]}}
        req_dict = request.session.get("req_dict")
        if req_dict.__contains__('vipread'):
            del req_dict['vipread']

        #获取全部列名
        columns=  news.getallcolumn( news, news)
        #表属性[foreEndList]前台list:和后台默认的list列表页相似,只是摆在前台,否:指没有此页,是:表示有此页(不需要登陆即可查看),前要登:表示有此页且需要登陆后才能查看
        try:
            __foreEndList__=news.__foreEndList__
        except:
            __foreEndList__=None

        if __foreEndList__=="前要登":
            tablename=request.session.get("tablename")
            if tablename!="users" and 'userid' in columns:
                try:
                    req_dict['userid']=request.session.get("params").get("id")
                except:
                    pass
        #forrEndListAuth
        try:
            __foreEndListAuth__=news.__foreEndListAuth__
        except:
            __foreEndListAuth__=None


        #authSeparate
        try:
            __authSeparate__=news.__authSeparate__
        except:
            __authSeparate__=None

        if __foreEndListAuth__ =="是" and __authSeparate__=="是":
            tablename=request.session.get("tablename")
            if tablename!="users":
                req_dict['userid']=request.session.get("params",{"id":0}).get("id")

        tablename = request.session.get("tablename")
        if tablename == "users" and req_dict.get("userid") != None:#判断是否存在userid列名
            del req_dict["userid"]
        else:
            __isAdmin__ = None

            allModels = apps.get_app_config('main').get_models()
            for m in allModels:
                if m.__tablename__==tablename:

                    try:
                        __isAdmin__ = m.__isAdmin__
                    except:
                        __isAdmin__ = None
                    break

            if __isAdmin__ == "是":
                if req_dict.get("userid"):
                    # del req_dict["userid"]
                    pass
            else:
                #非管理员权限的表,判断当前表字段名是否有userid
                if "userid" in columns:
                    try:
                        pass
                    except:
                            pass
        #当列属性authTable有值(某个用户表)[该列的列名必须和该用户表的登陆字段名一致]，则对应的表有个隐藏属性authTable为”是”，那么该用户查看该表信息时，只能查看自己的
        try:
            __authTables__=news.__authTables__
        except:
            __authTables__=None

        if __authTables__!=None and  __authTables__!={} and __foreEndListAuth__=="是":
            try:
                del req_dict['userid']
            except:
                pass
            for authColumn,authTable in __authTables__.items():
                if authTable==tablename:
                    params = request.session.get("params")
                    req_dict[authColumn]=params.get(authColumn)
                    username=params.get(authColumn)
                    break
        
        if news.__tablename__[:7]=="discuss":
            try:
                del req_dict['userid']
            except:
                pass


        q = Q()

        msg['data']['list'], msg['data']['currPage'], msg['data']['totalPage'], msg['data']['total'], \
        msg['data']['pageSize']  = news.page(news, news, req_dict, request, q)

        return JsonResponse(msg)

def news_save(request):
    '''
    后台新增
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}
        req_dict = request.session.get("req_dict")
        if 'clicktime' in req_dict.keys():
            del req_dict['clicktime']
        tablename=request.session.get("tablename")
        __isAdmin__ = None
        allModels = apps.get_app_config('main').get_models()
        for m in allModels:
            if m.__tablename__==tablename:

                try:
                    __isAdmin__ = m.__isAdmin__
                except:
                    __isAdmin__ = None
                break


        #获取全部列名
        columns=  news.getallcolumn( news, news)
        if tablename!='users' and req_dict.get("userid")!=None and 'userid' in columns  and __isAdmin__!='是':
            params=request.session.get("params")
            req_dict['userid']=params.get('id')


        if 'addtime' in req_dict.keys():
            del req_dict['addtime']

        error= news.createbyreq(news,news, req_dict)
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error

        return JsonResponse(msg)


def news_add(request):
    '''
    前台新增
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}
        req_dict = request.session.get("req_dict")

        #获取全部列名
        columns=  news.getallcolumn( news, news)
        try:
            __authSeparate__=news.__authSeparate__
        except:
            __authSeparate__=None

        if __authSeparate__=="是":
            tablename=request.session.get("tablename")
            if tablename!="users" and 'userid' in columns:
                try:
                    req_dict['userid']=request.session.get("params").get("id")
                except:
                    pass

        try:
            __foreEndListAuth__=news.__foreEndListAuth__
        except:
            __foreEndListAuth__=None

        if __foreEndListAuth__ and __foreEndListAuth__!="否":
            tablename=request.session.get("tablename")
            if tablename!="users":
                req_dict['userid']=request.session.get("params").get("id")


        if 'addtime' in req_dict.keys():
            del req_dict['addtime']
        error= news.createbyreq(news,news, req_dict)
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error
        return JsonResponse(msg)

def news_thumbsup(request,id_):
    '''
     点赞：表属性thumbsUp[是/否]，刷表新增thumbsupnum赞和crazilynum踩字段，
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}
        req_dict = request.session.get("req_dict")
        id_=int(id_)
        type_=int(req_dict.get("type",0))
        rets=news.getbyid(news,news,id_)

        update_dict={
        "id":id_,
        }
        if type_==1:#赞
            update_dict["thumbsupnum"]=int(rets[0].get('thumbsupnum'))+1
        elif type_==2:#踩
            update_dict["crazilynum"]=int(rets[0].get('crazilynum'))+1
        error = news.updatebyparams(news,news, update_dict)
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error
        return JsonResponse(msg)


def news_info(request,id_):
    '''
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}

        data = news.getbyid(news,news, int(id_))
        if len(data)>0:
            msg['data']=data[0]
            if msg['data'].__contains__("reversetime"):
                # msg['data']['reversetime'] = msg['data']['reversetime'].strftime("%Y-%m-%d %H:%M:%S")
                reversetime = datetime.datetime.strptime(msg['data']['reversetime'], '%Y-%m-%d %H:%M:%S')
                msg['data']['reversetime'] = reversetime.strftime("%Y-%m-%d %H:%M:%S")
        #浏览点击次数
        try:
            __browseClick__= news.__browseClick__
        except:
            __browseClick__=None

        if __browseClick__=="是"  and  "clicknum"  in news.getallcolumn(news,news):
            try:
                clicknum=int(data[0].get("clicknum",0))+1
            except:
                clicknum=0+1
            click_dict={"id":int(id_),"clicknum":clicknum}
            ret=news.updatebyparams(news,news,click_dict)
            if ret!=None:
                msg['code'] = crud_error_code
                msg['msg'] = ret
        return JsonResponse(msg)

def news_detail(request,id_):
    '''
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}

        data =news.getbyid(news,news, int(id_))
        if len(data)>0:
            msg['data']=data[0]
            if msg['data'].__contains__("reversetime"):
                # msg['data']['reversetime'] = msg['data']['reversetime'].strftime("%Y-%m-%d %H:%M:%S")
                reversetime = datetime.datetime.strptime(msg['data']['reversetime'], '%Y-%m-%d %H:%M:%S')
                msg['data']['reversetime'] = reversetime.strftime("%Y-%m-%d %H:%M:%S")

        #浏览点击次数
        try:
            __browseClick__= news.__browseClick__
        except:
            __browseClick__=None

        if __browseClick__=="是"   and  "clicknum"  in news.getallcolumn(news,news):
            try:
                clicknum=int(data[0].get("clicknum",0))+1
            except:
                clicknum=0+1
            click_dict={"id":int(id_),"clicknum":clicknum}

            ret=news.updatebyparams(news,news,click_dict)
            if ret!=None:
                msg['code'] = crud_error_code
                msg['msg'] = retfo
        return JsonResponse(msg)


def news_update(request):
    '''
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}
        req_dict = request.session.get("req_dict")
        if req_dict.get("mima") and "mima" not in news.getallcolumn(news,news) :
            del req_dict["mima"]
        if req_dict.get("password") and "password" not in news.getallcolumn(news,news) :
            del req_dict["password"]
        try:
            del req_dict["clicknum"]
        except:
            pass


        error = news.updatebyparams(news, news, req_dict)
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error

        return JsonResponse(msg)


def news_delete(request):
    '''
    批量删除
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}
        req_dict = request.session.get("req_dict")

        error=news.deletes(news,
            news,
             req_dict.get("ids")
        )
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error
        return JsonResponse(msg)


def news_vote(request,id_):
    '''
    浏览点击次数（表属性[browseClick:是/否]，点击字段（clicknum），调用info/detail接口的时候后端自动+1）、投票功能（表属性[vote:是/否]，投票字段（votenum）,调用vote接口后端votenum+1）
统计商品或新闻的点击次数；提供新闻的投票功能
    '''
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code}


        data= news.getbyid(news, news, int(id_))
        for i in data:
            votenum=i.get('votenum')
            if votenum!=None:
                params={"id":int(id_),"votenum":votenum+1}
                error=news.updatebyparams(news,news,params)
                if error!=None:
                    msg['code'] = crud_error_code
                    msg['msg'] = error
        return JsonResponse(msg)

def news_importExcel(request):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": "成功", "data": {}}

        excel_file = request.FILES.get("file", "")
        file_type = excel_file.name.split('.')[1]
        
        if file_type in ['xlsx', 'xls']:
            data = xlrd.open_workbook(filename=None, file_contents=excel_file.read())
            table = data.sheets()[0]
            rows = table.nrows
            
            try:
                for row in range(1, rows):
                    row_values = table.row_values(row)
                    req_dict = {}
                    news.createbyreq(news, news, req_dict)
                    
            except:
                pass
                
        else:
            msg = {
                "msg": "文件类型错误",
                "code": 500
            }
                
        return JsonResponse(msg)

def news_sendemail(request):
    if request.method in ["POST", "GET"]:
        req_dict = request.session.get("req_dict")

        code = random.sample(['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'], 4)
        to = []
        to.append(req_dict['email'])

        send_mail('用户注册', '您的注册验证码是【'+''.join(code)+'】，请不要把验证码泄漏给其他人，如非本人请勿操作。', '[email protected]', to, fail_silently = False)

        cursor = connection.cursor()
        cursor.execute("insert into emailregistercode(email,role,code) values('"+req_dict['email']+"','用户','"+''.join(code)+"')")

        msg = {
            "msg": "发送成功",
            "code": 0
        }

        return JsonResponse(msg)

def news_autoSort2(request):
    return JsonResponse({"code": 0, "msg": '',  "data":{}})

# （按值统计）时间统计类型
def news_value(request, xColumnName, yColumnName, timeStatType):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": "成功", "data": {}}
        
        where = ' where 1 = 1 '
        sql = ''
        if timeStatType == '日':
            sql = "SELECT DATE_FORMAT({0}, '%Y-%m-%d') {0}, sum({1}) total FROM news {2} GROUP BY DATE_FORMAT({0}, '%Y-%m-%d') LIMIT 10".format(xColumnName, yColumnName, where, '%Y-%m-%d')

        if timeStatType == '月':
            sql = "SELECT DATE_FORMAT({0}, '%Y-%m') {0}, sum({1}) total FROM news {2} GROUP BY DATE_FORMAT({0}, '%Y-%m') LIMIT 10".format(xColumnName, yColumnName, where, '%Y-%m')

        if timeStatType == '年':
            sql = "SELECT DATE_FORMAT({0}, '%Y') {0}, sum({1}) total FROM news {2} GROUP BY DATE_FORMAT({0}, '%Y') LIMIT 10".format(xColumnName, yColumnName, where, '%Y')

        L = []
        cursor = connection.cursor()
        cursor.execute(sql)
        desc = cursor.description
        data_dict = [dict(zip([col[0] for col in desc], row)) for row in cursor.fetchall()] 
        for online_dict in data_dict:
            for key in online_dict:
                if 'datetime.datetime' in str(type(online_dict[key])):
                    online_dict[key] = online_dict[key].strftime(
                        "%Y-%m-%d %H:%M:%S")
                else:
                    pass
            L.append(online_dict)
        msg['data'] = L
        return JsonResponse(msg)

# 按值统计
def news_o_value(request, xColumnName, yColumnName):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": "成功", "data": {}}
        
        where = ' where 1 = 1 '
        
        sql = "SELECT {0}, sum({1}) AS total FROM news {2} GROUP BY {0} LIMIT 10".format(xColumnName, yColumnName, where)
        L = []
        cursor = connection.cursor()
        cursor.execute(sql)
        desc = cursor.description
        data_dict = [dict(zip([col[0] for col in desc], row)) for row in cursor.fetchall()] 
        for online_dict in data_dict:
            for key in online_dict:
                if 'datetime.datetime' in str(type(online_dict[key])):
                    online_dict[key] = online_dict[key].strftime(
                        "%Y-%m-%d %H:%M:%S")
                else:
                    pass
            L.append(online_dict)
        msg['data'] = L
        return JsonResponse(msg)

# （按值统计）时间统计类型(多)
def news_valueMul(request, xColumnName, timeStatType):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": "成功", "data": []}

        req_dict = request.session.get("req_dict")

        where = ' where 1 = 1 '
        
        for item in req_dict['yColumnNameMul'].split(','):
            sql = ''
            if timeStatType == '日':
                sql = "SELECT DATE_FORMAT({0}, '%Y-%m-%d') {0}, sum({1}) total FROM news {2} GROUP BY DATE_FORMAT({0}, '%Y-%m-%d') LIMIT 10".format(xColumnName, item, where, '%Y-%m-%d')

            if timeStatType == '月':
                sql = "SELECT DATE_FORMAT({0}, '%Y-%m') {0}, sum({1}) total FROM news {2} GROUP BY DATE_FORMAT({0}, '%Y-%m') LIMIT 10".format(xColumnName, item, where, '%Y-%m')

            if timeStatType == '年':
                sql = "SELECT DATE_FORMAT({0}, '%Y') {0}, sum({1}) total FROM news {2} GROUP BY DATE_FORMAT({0}, '%Y') LIMIT 10".format(xColumnName, item, where, '%Y')

            L = []
            cursor = connection.cursor()
            cursor.execute(sql)
            desc = cursor.description
            data_dict = [dict(zip([col[0] for col in desc], row)) for row in cursor.fetchall()] 
            for online_dict in data_dict:
                for key in online_dict:
                    if 'datetime.datetime' in str(type(online_dict[key])):
                        online_dict[key] = online_dict[key].strftime(
                            "%Y-%m-%d %H:%M:%S")
                    else:
                        pass
                L.append(online_dict)
            msg['data'].append(L)
        return JsonResponse(msg)

# （按值统计(多)）
def news_o_valueMul(request, xColumnName):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": "成功", "data": []}

        req_dict = request.session.get("req_dict")
        
        where = ' where 1 = 1 '

        for item in req_dict['yColumnNameMul'].split(','):
            sql = "SELECT {0}, sum({1}) AS total FROM news {2} GROUP BY {0} LIMIT 10".format(xColumnName, item, where)
            L = []
            cursor = connection.cursor()
            cursor.execute(sql)
            desc = cursor.description
            data_dict = [dict(zip([col[0] for col in desc], row)) for row in cursor.fetchall()] 
            for online_dict in data_dict:
                for key in online_dict:
                    if 'datetime.datetime' in str(type(online_dict[key])):
                        online_dict[key] = online_dict[key].strftime(
                            "%Y-%m-%d %H:%M:%S")
                    else:
                        pass
                L.append(online_dict)
            msg['data'].append(L)

        return JsonResponse(msg)






def news_group(request, columnName):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": "成功", "data": {}}
        
        where = ' where 1 = 1 '

        sql = "SELECT COUNT(*) AS total, " + columnName + " FROM news " + where + " GROUP BY " + columnName + " LIMIT 10"

        L = []
        cursor = connection.cursor()
        cursor.execute(sql)
        desc = cursor.description
        data_dict = [dict(zip([col[0] for col in desc], row)) for row in cursor.fetchall()] 
        for online_dict in data_dict:
            for key in online_dict:
                if 'datetime.datetime' in str(type(online_dict[key])):
                    online_dict[key] = online_dict[key].strftime("%Y-%m-%d")
                else:
                    pass
            L.append(online_dict)
        msg['data'] = L
        return JsonResponse(msg)

五，相关作品展示

基于Java开发、Python开发、PHP开发、C#开发等相关语言开发的实战项目

基于Nodejs、Vue等前端技术开发的前端实战项目

基于微信小程序和安卓APP应用开发的相关作品

基于51单片机等嵌入式物联网开发应用

基于各类算法实现的AI智能应用

基于大数据实现的各类数据管理和推荐系统