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1、项目介绍

图书借阅系统的管理一直是信息管理的一大难题，图书信息数量多，此时寻找有效便捷的图书信息管理方法就是当务之急。而日趋成熟的计算机信息管理技术便成为解决这一难题的唯一之选。图书借阅系统为了随时随地查看图书信息提供了便捷的方法，更重要的是大大的简化了管理员管理图书信息的方式方法，更提供了其他想要了解图书信息及运作情况以及挑选方便快捷的可靠渠道。相比于传统图书借阅管理方法，这样的电子信息管理更为简洁方便，在图书馆维护信息反馈和处理图书意见方面也有得天独厚的优势。<font>

2、核心功能模块

基于Python的图书借阅系统，选用B/S模式，应用django技术， MySQL为后台数据库。系统主要包括首页，个人中心，用户管理，图书馆管理，图书信息管理，图书类型管理，借阅信息管理，归还信息管理，续借信息管理，罚金信息管理，留言板管理，系统管理等功能模块。

基于Python的图书借阅系统的设计与实现的设计思想如下：
1、操作简单方便、系统界面安全良好：简单明了的页面布局，方便查询图书馆中的图书相关信息。
2、即时可见：对图书借阅信息的处理将立马在搜索中可以查询到，从而实现“即时借阅、即时见效”的系统功能。

基于Python的图书借阅系统的整个设计结构如下图所示。

5、 核心代码

  #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
            __hasMessage__=jieyuexinxi.__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:
                    __isAdmin__ = m.__isAdmin__
                except:
                    __isAdmin__ = None
                break
        # 当前表也是有管理员权限的表
        if  __isAdmin__ == "是":
            if req_dict.get("userid"):
                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 'jieyuexinxi'[:7]!='discuss'and "userid" in jieyuexinxi.getallcolumn(jieyuexinxi,jieyuexinxi):
                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
            __authTables__=jieyuexinxi.__authTables__
        except:
            __authTables__=None
        if __authTables__!=None and  __authTables__!={}:
                del req_dict['userid']
            except:
            for authColumn,authTable in __authTables__.items():
                if authTable==tablename:
                    params = request.session.get("params")
                    req_dict[authColumn]=params.get(authColumn)
                    break
        msg['data']['list'], msg['data']['currPage'], msg['data']['totalPage'], msg['data']['total'], \
        msg['data']['pageSize']  =jieyuexinxi.page(jieyuexinxi, jieyuexinxi, req_dict, request)
        return JsonResponse(msg)
def jieyuexinxi_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 jieyuexinxi.getallcolumn(jieyuexinxi,jieyuexinxi):
            req_dict['sort']='clicknum'
        else:
            req_dict['sort']='clicktime'
        req_dict['order']='desc'
        msg['data']['list'], msg['data']['currPage'], msg['data']['totalPage'], msg['data']['total'], \
        msg['data']['pageSize']  = jieyuexinxi.page(jieyuexinxi,jieyuexinxi, req_dict)
        return JsonResponse(msg)
def jieyuexinxi_list(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")
        #获取全部列名
        columns=  jieyuexinxi.getallcolumn( jieyuexinxi, jieyuexinxi)
        #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
            __foreEndList__=jieyuexinxi.__foreEndList__
        except:
            __foreEndList__=None
        if __foreEndList__=="前要登":
            tablename=request.session.get("tablename")
            if tablename!="users" and 'userid' in columns:
                    req_dict['userid']=request.session.get("params").get("id")
                except:
        #forrEndListAuth
            __foreEndListAuth__=jieyuexinxi.__foreEndListAuth__
        except:
            __foreEndListAuth__=None
        #authSeparate
            __authSeparate__=jieyuexinxi.__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:
                        __isAdmin__ = m.__isAdmin__
                    except:
                        __isAdmin__ = None
                    break
            if __isAdmin__ == "是":
                if req_dict.get("userid"):
                    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 "userid" in columns:
                        # 本接口可以匿名访问,所以try判断是否为匿名
                        req_dict['userid']=request.session.get("params").get("id")
                    except:
        #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
            __authTables__=jieyuexinxi.__authTables__
        except:
            __authTables__=None
        if __authTables__!=None and  __authTables__!={} and __foreEndListAuth__=="是":
                del req_dict['userid']
            except:
            for authColumn,authTable in __authTables__.items():
                if authTable==tablename:
                    params = request.session.get("params")
                    req_dict[authColumn]=params.get(authColumn)
                    break
        if jieyuexinxi.__tablename__[:7]=="discuss":
                del req_dict['userid']
            except:
        msg['data']['list'], msg['data']['currPage'], msg['data']['totalPage'], msg['data']['total'], \
        msg['data']['pageSize']  = jieyuexinxi.page(jieyuexinxi, jieyuexinxi, req_dict)
        return JsonResponse(msg)
def jieyuexinxi_save(request):
    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:
                    __isAdmin__ = m.__isAdmin__
                except:
                    __isAdmin__ = None
                break
        #获取全部列名
        columns=  jieyuexinxi.getallcolumn( jieyuexinxi, jieyuexinxi)
        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')
        error= jieyuexinxi.createbyreq(jieyuexinxi,jieyuexinxi, req_dict)
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error
        return JsonResponse(msg)
def jieyuexinxi_add(request):
    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=  jieyuexinxi.getallcolumn( jieyuexinxi, jieyuexinxi)
            __authSeparate__=jieyuexinxi.__authSeparate__
        except:
            __authSeparate__=None
        if __authSeparate__=="是":
            tablename=request.session.get("tablename")
            if tablename!="users" and 'userid' in columns:
                    req_dict['userid']=request.session.get("params").get("id")
                except:
            __foreEndListAuth__=jieyuexinxi.__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")
        error= jieyuexinxi.createbyreq(jieyuexinxi,jieyuexinxi, req_dict)
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error
        return JsonResponse(msg)
def jieyuexinxi_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=jieyuexinxi.getbyid(jieyuexinxi,jieyuexinxi,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 = jieyuexinxi.updatebyparams(jieyuexinxi,jieyuexinxi, update_dict)
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error
        return JsonResponse(msg)
def jieyuexinxi_info(request,id_):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}
        data = jieyuexinxi.getbyid(jieyuexinxi,jieyuexinxi, int(id_))
        if len(data)>0:
            msg['data']=data[0]
        #浏览点击次数
            __browseClick__= jieyuexinxi.__browseClick__
        except:
            __browseClick__=None
        if __browseClick__=="是"  and  "clicknum"  in jieyuexinxi.getallcolumn(jieyuexinxi,jieyuexinxi):
                clicknum=int(data[0].get("clicknum",0))+1
            except:
                clicknum=0+1
            click_dict={"id":int(id_),"clicknum":clicknum}
            ret=jieyuexinxi.updatebyparams(jieyuexinxi,jieyuexinxi,click_dict)
            if ret!=None:
                msg['code'] = crud_error_code
                msg['msg'] = ret
        return JsonResponse(msg)
def jieyuexinxi_detail(request,id_):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}
        data =jieyuexinxi.getbyid(jieyuexinxi,jieyuexinxi, int(id_))
        if len(data)>0:
            msg['data']=data[0]
        #浏览点击次数
            __browseClick__= jieyuexinxi.__browseClick__
        except:
            __browseClick__=None
        if __browseClick__=="是"   and  "clicknum"  in jieyuexinxi.getallcolumn(jieyuexinxi,jieyuexinxi):
                clicknum=int(data[0].get("clicknum",0))+1
            except:
                clicknum=0+1
            click_dict={"id":int(id_),"clicknum":clicknum}
            ret=jieyuexinxi.updatebyparams(jieyuexinxi,jieyuexinxi,click_dict)
            if ret!=None:
                msg['code'] = crud_error_code
                msg['msg'] = retfo
        return JsonResponse(msg)
def jieyuexinxi_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 req_dict.get("password"):
            if "mima" not  in jieyuexinxi.getallcolumn(jieyuexinxi,jieyuexinxi) :
                del req_dict["mima"]
            if  "password" not  in jieyuexinxi.getallcolumn(jieyuexinxi,jieyuexinxi) :
                del req_dict["password"]
            del req_dict["clicknum"]
        except:
        error = jieyuexinxi.updatebyparams(jieyuexinxi, jieyuexinxi, req_dict)
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error
        return JsonResponse(msg)
def jieyuexinxi_delete(request):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": mes.normal_code, "data": {}}
        req_dict = request.session.get("req_dict")
        error=jieyuexinxi.deletes(jieyuexinxi,
            jieyuexinxi,
             req_dict.get("ids")
        if error!=None:
            msg['code'] = crud_error_code
            msg['msg'] = error
        return JsonResponse(msg)
def jieyuexinxi_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= jieyuexinxi.getbyid(jieyuexinxi, jieyuexinxi, int(id_))
        for i in data:
            votenum=i.get('votenum')
            if votenum!=None:
                params={"id":int(id_),"votenum":votenum+1}
                error=jieyuexinxi.updatebyparams(jieyuexinxi,jieyuexinxi,params)
                if error!=None:
                    msg['code'] = crud_error_code
                    msg['msg'] = error
        return JsonResponse(msg)
def jieyuexinxi_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
                for row in range(1, rows):
                    row_values = table.row_values(row)
                    req_dict = {}
                    jieyuexinxi.createbyreq(jieyuexinxi, jieyuexinxi, req_dict)
            except:
        else:
            msg.code = 500
            msg.msg = "文件类型错误"
        return JsonResponse(msg)
def jieyuexinxi_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 jieyuexinxi_autoSort2(request):
    if request.method in ["POST", "GET"]:
        req_dict = request.session.get("req_dict")
        cursor = connection.cursor()
        leixing = set()
            cursor.execute("select inteltype from storeup where userid = %d"%(request.session.get("params").get("id"))+" and tablename = 'jieyuexinxi' order by addtime desc")
            rows = cursor.fetchall()
            for row in rows:
                for item in row:
                    if item != None:
                        leixing.add(item)
        except:
            leixing = set()
        L = []
        cursor.execute("select * from jieyuexinxi where $intelRecomColumn in ('%s"%("','").join(leixing)+"') union all select * from jieyuexinxi where $intelRecomColumn not in('%s"%("','").join(leixing)+"')")
        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:
            L.append(online_dict)
        return JsonResponse({"code": 0, "msg": '',  "data":{"currPage":1,"totalPage":1,"total":1,"pageSize":5,"list": L[0:6]}})
def jieyuexinxi_value(request, xColumnName, yColumnName, timeStatType):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": "成功", "data": {}}
        where = ' where 1 = 1 '
        token = request.META.get('HTTP_TOKEN')
        decode_str = eval(base64.b64decode(token).decode("utf8"))
        if decode_str['tablename'] != 'users':
            where = where + " and zhanghao ='{0}' ".format(decode_str['params']['zhanghao'])
        sql = ''
        if timeStatType == '日':
            sql = "SELECT DATE_FORMAT({0}, '%Y-%m-%d') {0}, sum({1}) total FROM jieyuexinxi {2} GROUP BY DATE_FORMAT({0}, '%Y-%m-%d')".format(xColumnName, yColumnName, where, '%Y-%m-%d')
        if timeStatType == '月':
            sql = "SELECT DATE_FORMAT({0}, '%Y-%m') {0}, sum({1}) total FROM jieyuexinxi {2} GROUP BY DATE_FORMAT({0}, '%Y-%m')".format(xColumnName, yColumnName, where, '%Y-%m')
        if timeStatType == '年':
            sql = "SELECT DATE_FORMAT({0}, '%Y') {0}, sum({1}) total FROM jieyuexinxi {2} GROUP BY DATE_FORMAT({0}, '%Y')".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:
            L.append(online_dict)
        msg['data'] = L
        return JsonResponse(msg)
def jieyuexinxi_o_value(request, xColumnName, yColumnName):
    if request.method in ["POST", "GET"]:
        msg = {"code": normal_code, "msg": "成功", "data": {}}
        where = ' where 1 = 1 '
        token = request.META.get('HTTP_TOKEN')
        decode_str = eval(base64.b64decode(token).decode("utf8"))
        if decode_str['tablename'] != 'users':
            where = where + " and zhanghao ='{0}' ".format(decode_str['params']['zhanghao'])
        sql = "SELECT {0}, sum({1}) AS total FROM jieyuexinxi {2} GROUP BY {0}".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:
            L.append(online_dict)
        msg['data'] = L
        return JsonResponse(msg)
def jieyuexinxi_alipay(request):
    if request.method in ["POST", "GET"]:
        alipay = AliPay(
            appid=settings.ALIPAY_APP_ID,
            app_notify_url=None,
            app_private_key_string=settings.APP_PRIVATE_KEY_STRING,
            alipay_public_key_string=settings.ALIPAY_PUBLIC_KEY_STRING,
            sign_type=settings.ALIPAY_SIGN_TYPE,
            debug=True,
            config=AliPayConfig(timeout=15)
        req_dict = request.session.get("req_dict")
        order_string = alipay.api_alipay_trade_page_pay(
            out_trade_no=req_dict['tradeno'],
            total_amount=req_dict['totalamount'],
            subject=req_dict['subject'],
            return_url='http://localhost:8080/django582a0/jieyuexinxi/notify',
            #notify_url=''
        pay_url = 'https://openapi.alipaydev.com/gateway.do?' + order_string
        pay_url = '<form name="punchout_form" method="post" action="{0}"><input type="hidden" name="biz_content" ><input type="submit" value="立即支付" style="display: none"></form>'.format(pay_url)
        return JsonResponse({'code': 0, "data": pay_url})
def jieyuexinxi_notify(request):
    if request.method in ["POST", "GET"]:
        req_dict = request.session.get("req_dict")