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主要内容：Java项目、Python项目、前端项目、人工智能与大数据、简历模板、学习资料、面试题库、技术互助

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文末获取源码 

项目编号：L-BS-PY-02

一，项目简介

网络爬虫：通过Python实现新浪新闻的爬取，可爬取新闻页面上的标题、文本、图片、视频链接（保留排版） 推荐算法：权重衰减+标签推荐+区域推荐+热点推荐

• 权重衰减进行用户兴趣标签权重的衰减，避免内容推荐的过度重复
• 标签推荐进行用户标签与新闻标签的匹配，按照匹配比例进行新闻的推荐
• 区域推荐进行IP区域确定，匹配区域性文章进行推荐
• 热点推荐进行新闻热点的计算的依据是新闻阅读量、新闻评论量、新闻发布时间

涉及框架：Django、jieba、selenium、BeautifulSoup、vue.js

二，系统展示

2.1 软件功能结构

2.2 页面展示

用户端 

管理端 

三，核心代码展示

3.1 获取所有的新闻列表

import datetime
import json
import time
from django.core import serializers
from django.db.models import Q
from django.http import JsonResponse

from news_api.models import newsdetail, recommend, newshot, newssimilar, history, comments, user, givelike, message


def all_news(request):
    '''
        @Description：获取所有新闻
        @:param None
    '''
    if request.method == "GET":
        newslist = serializers.serialize("json", newsdetail.objects.all().order_by('-news_id'))
        response = JsonResponse({"status": 100, "newslist": newslist})
        response["Access-Control-Allow-Origin"] = "*"
        response["Access-Control-Allow-Credentials"] = "true"
        response["Access-Control-Allow-Methods"] = "GET,POST"
        response["Access-Control-Allow-Headers"] = "Origin,Content-Type,Cookie,Accept,Token"
        response["Cache-Control"] = "no-cache"
        return response


def del_news(request):
    '''
        @Description：删除指定新闻
        @:param url---指定新闻url
    '''
    if request.method == "GET":
        url = request.GET.get('url')
        # print(user.objects.filter(userid=userid).delete()[0])
        if newsdetail.objects.filter(url=url).delete()[0] == 0:
            return JsonResponse({"status": "100", "message": "Fail."})
        else:
            return JsonResponse({"status": "100", "message": "Success."})


def reconewsbytags(request):
    '''
        @Description：推送用户推荐新闻集
        @:param userid---用户id
    '''
    if request.method == "GET":
        userid = request.GET.get('userid')
        newsidlist = recommend.objects.filter(userid=userid, headread=0)
        newsdetaillist = list()
        for news in newsidlist:
            newsdetaillist.append(serializers.serialize("json", newsdetail.objects.filter(news_id=news.newsid)))
        response = JsonResponse({"status": 100, "newsidlist": newsdetaillist})
        return response


def reconewsbysimilar(request):
    '''
        @Description：推送相似新闻集
        @:param
    '''
    if request.method == "GET":
        newsid = request.GET.get('newsid')
        newsidlist = newssimilar.objects.filter(new_id_base=newsid).order_by('-new_correlation')[:5]
        newsdetaillist = list()
        for news in newsidlist:
            detail = newsdetail.objects.filter(news_id=news.new_id_sim)
            data = {
                'newsid': detail[0].news_id,
                'title': detail[0].title,
                'pic_url': detail[0].pic_url,
                'mainpage': detail[0].mainpage,
            }
            newsdetaillist.append(data)
            # newsdetaillist.append(serializers.serialize("json", newsdetail.objects.filter(news_id=news.new_id_sim)))
        response = JsonResponse({"status": 100, "newslist": newsdetaillist})
        return response


def typenews(request):
    '''
        @Description：推送各类别新闻集
        @:param typeid---类别id
    '''
    if request.method == "GET":
        typeid = request.GET.get('type')
        newsidlist = newshot.objects.filter(category=typeid).order_by('-news_hot')
        newsdetaillist = list()
        for news in newsidlist:
            newsdetaillist.append(serializers.serialize("json", newsdetail.objects.filter(news_id=news.news_id)))
        response = JsonResponse({"status": 100, "newslist": newsdetaillist})
        return response


def reconewsbyregion(request):
    '''
        @Description：通过ip地址进行地域关键词推荐
        @:param
        @:param
    '''
    if request.method == "GET":
        userid = request.GET.get('userid')
        user = userid.objects.filter(userid=userid)
        ip = user.ip


def getpicture(request):
    '''
        @Description：获取热度较高的四个新闻的图片以及Newsid
    '''
    if request.method == "GET":
        newshotlist = newshot.objects.all().order_by('-news_hot')[:10]
        pictlist = list()
        for news in newshotlist:
            temp = newsdetail.objects.filter(news_id=news.news_id).exclude(pic_url='[]')
            if len(temp) > 0:
                url = temp[0].pic_url
                newid = temp[0].news_id
                title = temp[0].title
                pictlist.append({'newsid': newid, 'pic_url': eval(url)[0], 'title': title})
        return JsonResponse({"status": "100", "message": pictlist})


def getNewsDetailByNewsid(request):
    '''
        @Description：通过newsid获取新闻详情
        @:param newsid ----> 新闻id
    '''
    if request.method == "GET":
        newsid = request.GET.get('newsid')
        userid = request.GET.get('userid')
        news = newsdetail.objects.filter(news_id=newsid)[0]
        newsdetail.objects.filter(news_id=newsid).update(readnum=(int(news.readnum) + 1))
        if int(userid) != 100000:
            users = user.objects.filter(userid=userid)[0]
            usertags = users.tags
            usertags = set(usertags.split(','))
            if news.keywords != None:
                newskeywords = set(news.keywords.split(','))
            else:
                newskeywords = set()
            # key = usertags & newskeywords
            # key = list(key)
            weight = eval(users.tagsweight)
            for keyword in newskeywords:
                if keyword in weight:
                    weight[keyword] = float(format(weight[keyword] + 0.01, ".3f"))
                    if weight[keyword] >= 0.1:
                        usertags.add(keyword)
                        user.objects.filter(userid=userid).update(tags=str(",".join(usertags)))
                else:
                    weight[keyword] = 0.01
            print(weight)
            user.objects.filter(userid=userid).update(tagsweight=str(weight).replace("\'", "\""))
            # if len(key) > 0:
            #     weight = eval(users.tagsweight)
            #     weight[key[0]] = weight.get(key[0]) + 0.01
            #     print(weight)
            #     user.objects.filter(userid=userid).update(tagsweight=str(weight).replace("\'", "\""))
        temp = givelike.objects.filter(newsid=newsid, userid=userid)
        print(len(temp))
        if len(temp) == 0:
            liking = 0
        else:
            liking = temp[0].givelikeornot
        newsdetails = {
            "newsid": news.news_id,
            "title": news.title,
            "date": news.date,
            "pic_url": news.pic_url,
            "videourl": news.videourl,
            "category": news.category,
            "readnum": int(news.readnum) + 1,
            "comments": news.comments,
            "origin": news.origin,
            "givelike": liking,
        }
        return JsonResponse({"status": "100", "message": newsdetails})


def all_news_to_page(request):
    '''
        @Description：获取所有新闻
        @:param None
    '''
    if request.method == "GET":
        newslist = serializers.serialize("json", newsdetail.objects.all().order_by('-news_id')[0:100])
        response = JsonResponse({"status": 100, "newslist": newslist})
        response["Access-Control-Allow-Origin"] = "*"
        response["Access-Control-Allow-Credentials"] = "true"
        response["Access-Control-Allow-Methods"] = "GET,POST"
        response["Access-Control-Allow-Headers"] = "Origin,Content-Type,Cookie,Accept,Token"
        response["Cache-Control"] = "no-cache"
        return response


def newsHistory(request):
    '''
        @Description：更新用户阅读记录
        @:param userid ---> 用户id
        @:param newsid ---> 新闻id
    '''
    if request.method == "GET":
        userid = request.GET.get('userid')
        newsid = request.GET.get('newsid')
        daytime = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
        history.objects.create(userid=userid, history_newsid=newsid, time=daytime)
        return JsonResponse({"status": "200"})


def newsHotRec(request):
    '''
        @Description：获取热点新闻推荐
        @:param userid ---> 用户id
        @:param newsid ---> 新闻id
    '''
    if request.method == "GET":
        hotnewsidlist = newshot.objects.all().order_by('-news_hot')[:5]
        newsdetaillist = list()
        for hotnews in hotnewsidlist:
            detail = newsdetail.objects.filter(news_id=hotnews.news_id)[0]
            data = {
                'newsid': detail.news_id,
                'mainpage': detail.mainpage,
                'title': detail.title,
                'pic_url': detail.pic_url,
            }
            newsdetaillist.append(data)
            # hotnews.news_id
        return JsonResponse({"status": "200", 'newslist': newsdetaillist})


def getComments(request):
    '''
        @Description：获取新闻评论列表
        @:param newsid ---> 新闻id
    '''
    if request.method == "GET":
        newsid = request.GET.get('newsid')
        commentlistdata = comments.objects.filter(newsid=newsid, status="正常")
        commentlist = list()
        for comment in commentlistdata:
            # comment = commentlistdata[commentid]
            # print(commentid)

            User = user.objects.filter(userid=comment.userid)[0]
            userheadPortrait = User.headPortrait
            userName = User.username
            touser = user.objects.filter(userid=comment.touserid)
            ToUser = None
            if len(touser) != 0:
                ToUser = touser[0]
            if ToUser != None:
                toUserHeadPortrait = ToUser.headPortrait
                toUserName = ToUser.username
            else:
                toUserHeadPortrait = None
                toUserName = None

            data = {
                'userid': comment.userid,
                'touserid': comment.touserid,
                'comments': comment.comments,
                'time': comment.time,
                'username': userName,
                'userheadPortrait': userheadPortrait,
                'tousername': toUserName,
                'toUserHeadPortrait': toUserHeadPortrait,
            }
            commentlist.append(data)
        return JsonResponse({"status": "200", 'commentlist': commentlist})


def gethotnews(request):
    '''
        @Description：获取热点新闻排行
    '''
    if request.method == "GET":
        newsidlist = newshot.objects.all().order_by('-news_hot')[0:50
                     ]
        newslist = list()
        for news in newsidlist:
            detail = newsdetail.objects.filter(news_id=news.news_id)
            data = {
                "newsid": detail[0].news_id,
                "title": detail[0].title,
                "date": detail[0].date,
                "pic_url": detail[0].pic_url,
                "mainpage": detail[0].mainpage,
                "category": detail[0].category,
                "readnum": detail[0].readnum,
                "comments": detail[0].comments,
                "hotvalue": news.news_hot,
            }
            newslist.append(data)
    return JsonResponse({"status": "200", 'newslist': newslist})


def updateGiveLike(request):
    '''
        @Description：更新点赞/点踩状态
        @:param newsid --> 新闻ID
        @:param userid --> 用户ID
        @:param like  -->  点击状态 0/1/2
    '''
    if request.method == "GET":
        newsid = request.GET.get('newsid')
        userid = request.GET.get('userid')
        like = request.GET.get('like')
        if int(like) == 1:
            if int(userid) != 100000:
                users = user.objects.filter(userid=userid)[0]
                usertags = users.tags
                news = newsdetail.objects.filter(news_id=newsid)[0]
                usertags = set(usertags.split(','))
                if news.keywords != None:
                    newskeywords = set(news.keywords.split(','))
                else:
                    newskeywords = set()
                key = usertags & newskeywords
                key = list(key)
                if len(key) > 0:
                    weight = eval(users.tagsweight)
                    weight[key[0]] = weight.get(key[0]) + 0.01
                    user.objects.filter(userid=userid).update(tagsweight=str(weight).replace("\'", "\""))
        if int(like) == 2:
            if int(userid) != 100000:
                users = user.objects.filter(userid=userid)[0]
                usertags = users.tags
                news = newsdetail.objects.filter(news_id=newsid)[0]
                usertags = set(usertags.split(','))
                if news.keywords != None:
                    newskeywords = set(news.keywords.split(','))
                else:
                    newskeywords = set()
                for k in newskeywords:
                    weight = eval(users.tagsweight)
                    if k in weight:
                        if weight[k] >= 0.1:
                            weight[k] = float(format(weight.get(k) - 0.1, ".3f"))
                            if weight.get(k) > 0:
                                user.objects.filter(userid=userid).update(tagsweight=str(weight).replace("\'", "\""))
                            else:
                                weight.pop(k)
                                print('weight', weight)
                                user.objects.filter(userid=userid).update(tagsweight=str(weight).replace("\'", "\""))
                                usertags.remove(k)
                                newusertags = ','.join(usertags)
                                user.objects.filter(userid=userid).update(tags=newusertags)
        selectres = givelike.objects.filter(userid=userid, newsid=newsid)
        if len(selectres) == 0:
            givelike(userid=userid, newsid=newsid, givelikeornot=like).save()
        else:
            selectres.update(userid=userid, newsid=newsid, givelikeornot=like)
        return JsonResponse({"status": "200", 'message': 'Success.'})
    else:
        return JsonResponse({"status": "200", 'message': 'Fail.'})


def submitComments(request):
    '''
        @Description：提交新闻评论
        @:param userid --> 提交用户ID
        @:param newsid --> 新闻ID
        @:param comment --> 评论内容
    '''
    if request.method == "POST":
        req = json.loads(request.body)
        print(req)
        userid = req['userid']
        newsid = req['newsid']
        comment = req['comment']
        # print('comment', comment)
        if int(userid) != 100000:
            print()
            users = user.objects.filter(userid=userid)[0]
            usertags = users.tags
            news = newsdetail.objects.filter(news_id=newsid)[0]
            usertags = set(usertags.split(','))
            if news.keywords != None:
                newskeywords = set(news.keywords.split(','))
            else:
                newskeywords = set()
            key = usertags & newskeywords
            key = list(key)
            if len(key) > 0:
                weight = eval(users.tagsweight)
                weight[key[0]] = weight.get(key[0]) + 0.01
                print(weight)
                user.objects.filter(userid=userid).update(tagsweight=str(weight).replace("\'", "\""))
        time = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
        comments(userid=userid, newsid=newsid, comments=comment, time=time, status="正常").save()
        newsdetail.objects.filter(news_id=newsid).update(
            comments=int(newsdetail.objects.filter(news_id=newsid)[0].comments) + 1)
        return JsonResponse({"status": "200", 'message': 'Success.'})


def submitCommenttoUser(request):
    '''
        @Description：对用户评论进行回复
        @:param userid --> 评论用户ID
        @:param newsid --> 新闻ID
        @:param comment --> 评论内容
        @:param touserid --> 被回复用户ID
    '''
    if request.method == "POST":
        req = json.loads(request.body)
        print(req)
        userid = req['userid']
        newsid = req['newsid']
        comment = req['comment']
        touserid = req['touserid']
        if int(userid) != 100000:
            print()
            users = user.objects.filter(userid=userid)[0]
            usertags = users.tags
            news = newsdetail.objects.filter(news_id=newsid)[0]
            usertags = set(usertags.split(','))
            if news.keywords != None:
                newskeywords = set(news.keywords.split(','))
            else:
                newskeywords = set()
            key = usertags & newskeywords
            key = list(key)
            if len(key) > 0:
                weight = eval(users.tagsweight)
                weight[key[0]] = weight.get(key[0]) + 0.01
                print(weight)
                user.objects.filter(userid=userid).update(tagsweight=str(weight).replace("\'", "\""))
        time = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
        sendMessage = "新的回复了！！请速速查看！！"
        comments(userid=userid, newsid=newsid, comments=comment, time=time, touserid=touserid, status="正常").save()
        message(userid=touserid, message=sendMessage, time=time, newsid=newsid, title="收到回复", hadread=0).save()
        return JsonResponse({"status": "200", 'message': 'Success.'})


def getManageHomeData(request):
    '''
        @Description：获取管理端主页数据
        @:param None
    '''
    if request.method == "GET":
        readnum = len(history.objects.all())
        userlist = user.objects.all()
        usernum = len(userlist)
        newsnum = len(newsdetail.objects.all())
        regionlist = dict()
        for us in userlist:
            if regionlist.get(us.region) == None:
                regionlist[us.region] = 1
            else:
                regionlist[us.region] = regionlist[us.region] + 1
        reclist = recommend.objects.filter(hadread=1)
        recnum = len(recommend.objects.all())
        statistical = dict()
        for rec in reclist:
            if statistical.get(rec.time) == None:
                statistical[rec.time] = 1
            else:
                statistical[rec.time] = statistical[rec.time] + 1
        comnum = len(comments.objects.all())
        likenum = len(givelike.objects.filter(givelikeornot=1))
        data = {
            'usernum': usernum,
            'readnum': readnum,
            'newsnum': newsnum,
            'recnum': recnum,
            'comnum': comnum,
            'statistical': statistical,
            'likenum': likenum,
            'regionlist': regionlist,
        }
        return JsonResponse({"status": "200", 'message': data})


def updateRecHis(request):
    '''
        @Description：更新推荐列表阅读历史/更改推荐新闻已读状态
        @:param userid --> 用户ID
        @:param newsid --> 新闻ID
    '''
    if request.method == "GET":
        userid = request.GET.get('userid')
        newsid = request.GET.get('newsid')
        recommend.objects.filter(newsid=newsid, userid=userid).update(hadread=1)
        return JsonResponse({"status": "200", 'message': 'Success.'})
    return JsonResponse({"status": "200", 'message': 'Fail.'})


def searchNews(request):
    '''
        @Description：管理端搜索新闻（模糊搜索）
        @:param keyword --> 搜索关键词
    '''
    if request.method == "GET":
        keyword = request.GET.get('keyword')
        newslist = newsdetail.objects.filter(Q(title__contains=keyword) | Q(mainpage__contains=keyword))
        response = JsonResponse({"status": 100, "newslist": serializers.serialize("json", newslist)})
        return response

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