es+flask搜索小项目实现分页+高亮的示例代码 es+flask搜索小项目实现分页+高

环境

前端：html,css,js,jQuery,bootstrap
后端：flask
搜索引擎：elasticsearch
数据源：某某之家

项目展示

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项目目录

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主要源码获取数据源并写入es

from lxml import etreefrom concurrent.futures import ThreadPoolExecutorfrom elasticsearch import Elasticsearchfrom elasticsearch import helpersimport requestsheaders = {'user-agent': 'ua'}es = Elasticsearch()if not es.indices.exists(index='car'):es.indices.create(index='car', mappings={'properties': {'url': {'type': 'text'},'img': {'type': 'text'},'title': {'type': 'text'},'desc': {'type': 'text'}}})def task(url,page):res = requests.get(url, headers)text = res.texttree = etree.HTML(text)ul_list = tree.xpath('//ul[@class="article"]')actions = []for ul in ul_list:li_list = ul.xpath('./li')for li in li_list:url = li.xpath('./a/@href'),img = li.xpath('./a/div/img/@src'),desc = li.xpath('./a/p/text()'),title = li.xpath('./a/h3/text()')if title:doc = {'_index': 'car','url': f'https:{url[0][0]}','img': img[0][0],'desc': desc[0][0],'title': title[0],}actions.append(doc)helpers.bulk(es, actions=actions)print(f'第{page}页完成！')def main():with ThreadPoolExecutor() as pool:for i in range(1, 11):url = f'https://www.autohome.com.cn/all/{i}/'pool.submit(task, url=url,page=i)if __name__ == '__main__':main()

视图函数

from flask import Blueprintfrom flask import requestfrom flask import render_templatefrom flask import jsonifyfrom web.ext import esfrom pprint import pprintsearch_bp = Blueprint('search', __name__, url_prefix='/search')@search_bp.route('/', methods=['get', 'post'])def search():if request.method == 'GET':return render_template('search.html')elif request.method == 'POST':content = request.values.get('content')size = 10current = int(request.values.get('current', '0'))if content:res = es.search(index='car', query={'match': {"title": content}}, highlight={"pre_tags": "","post_tags": "","fields": {"title": {}}}, size=1000)else:res = es.search(index='car', query={'match_all': {}}, size=1000)new_res = res['hits']['hits']total = int(res['hits']['total']['value'])need_page = (total // size) + 1data = https://www.it610.com/article/{'res': new_res[current * size:current * size + size],'need_page': need_page,'total': total}return jsonify(data)

前端

General Search.title{font-size: 25px; font-weight: 10; }.result{color: red; }
General Search
General为您找到相关结果约0个

app配置

from flask import Flaskfrom flask_session import Sessionfrom web.ext import dbfrom .search.search import search_bpfrom flask_script import Managerfrom flask_migrate import Migrate, MigrateCommanddef create_app():app = Flask(__name__)app.config.from_object('settings.DevelopmentConfig')app.register_blueprint(search_bp)Session(app)db.init_app(app)app = Manager(app)Migrate(app, db)app.add_command('db', MigrateCommand)return app

总结对比django,flask最后选用自由度较大的flask。
集合flask-script,flask_sqlalchemy,flask-migrate加快开发。
写一个小demo深化了对es接口的理解。
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