朋友的单位有一个小型的图书室,图书室中摆放了很多的书,每本书都被编号放在对应的区域,为了让大家更快、更容易找到这些书,他联系我,让我帮他弄一个图书查询系统,通过用户输入能模糊匹配到对应的结果,并且提供书籍对应的地点。
功能设计
- 让朋友把书籍整理并存储到一个 Excel 表格中;
- 将 Excel 表放到对象存储中,云函数读取这个文件并解析;
- 根据词语的相似寻找相似的图书;
- 前端页面通过 MUI 制作,放在对象存储中,并且使用对象存储的 Website 功能;
整体实现
数据形态
Excel 样式主要包括书名和编号,同时下面包括分类的 tab:
基于函数的搜索功能
核心代码实现:
复制代码已复制
import jiebaimport openpyxlfrom gensim import corpora, models, similaritiesfrom collections import defaultdictimport urllib.request with open("/tmp/book.xlsx", "wb") as f: f.write( urllib.request.urlopen("https://********").read() ) top_str = "abcdefghijklmn"book_dict = {}book_list = []wb = openpyxl.load_workbook('/tmp/book.xlsx')sheets = wb.sheetnamesfor eve_sheet in sheets: print(eve_sheet) sheet = wb.get_sheet_by_name(eve_sheet) this_book_name_index = None this_book_number_index = None for eve_header in top_str: if sheet[eve_header][0].value == " 书名 ": this_book_name_index = eve_header if sheet[eve_header][0].value == " 编号 ": this_book_number_index = eve_header print(this_book_name_index, this_book_number_index) if this_book_name_index and this_book_number_index: this_book_list_len = len(sheet[this_book_name_index]) for i in range(1, this_book_list_len): add_key = "%s_%s_%s" % ( sheet[this_book_name_index][i].value, eve_sheet, sheet[this_book_number_index][i].value) add_value = { "category": eve_sheet, "name": sheet[this_book_name_index][i].value, "number": sheet[this_book_number_index][i].value } book_dict[add_key] = add_value book_list.append(add_key) def getBookList(book, book_list): documents = [] for eve_sentence in book_list: tempData = " ".join(jieba.cut(eve_sentence)) documents.append(tempData) texts = [[word for word in document.split()] for document in documents] frequency = defaultdict(int) for text in texts: for word in text: frequency[word] += 1 dictionary = corpora.Dictionary(texts) new_xs = dictionary.doc2bow(jieba.cut(book)) corpus = [dictionary.doc2bow(text) for text in texts] tfidf = models.TfidfModel(corpus) featurenum = len(dictionary.token2id.keys()) sim = similarities.SparseMatrixSimilarity( tfidf[corpus], num_features=featurenum )[tfidf[new_xs]] book_result_list = [(sim[i], book_list[i]) for i in range(0, len(book_list))] book_result_list.sort(key=lambda x: x[0], reverse=True) result = [] for eve in book_result_list: if eve[0] >= 0.25: result.append(eve) return result def main_handler(event, context): try: print(event) name = event["body"] print(name) base_html = '''<div class='mui-card'><div class='mui-card-header'>{{book_name}}</div><div class='mui-card-content'><div class='mui-card-content-inner'> 分类:{{book_category}}<br> 编号:{{book_number}}</div></div></div>''' result_str = "" for eve_book in getBookList(name, book_list): book_infor = book_dict[eve_book[1]] result_str = result_str + base_html.replace("{{book_name}}", book_infor['name']) \ .replace("{{book_category}}", book_infor['category']) \ .replace("{{book_number}}", book_infor['number'] if book_infor['number'] else "") if result_str: return result_str except Exception as e: print(e) return '''<div class='mui-card' style='margin-top: 25px'><div class='mui-card-content'><div class='mui-card-content-inner'> 未找到图书信息,请您重新搜索。</div></div></div>'''
同时配置 APIGW:
功能页面
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<!DOCTYPE html><html><head> <meta charset="utf-8"> <title> 图书检索系统 </title> <meta name="viewport" content="width=device-width, initial-scale=1,maximum-scale=1,user-scalable=no"> <meta name="apple-mobile-web-app-capable" content="yes"> <meta name="apple-mobile-web-app-status-bar-style" content="black"> <link rel="stylesheet" href="https://others-1256773370.cos.ap-chengdu.myqcloud.com/booksearch/css/mui.min.css"> <style> html, body { background-color: #efeff4; } </style> <script> function getResult() { var UTFTranslate = { Change: function (pValue) { return pValue.replace(/[^\u0000-\u00FF]/g, function ($0) { return escape($0).replace(/(%u)(\w{4})/gi, "$2;") }); }, ReChange: function (pValue) { return unescape(pValue.replace(//g, '%u').replace(/\\u/g, '%u').replace(/;/g, '')); } }; var xmlhttp; if (window.XMLHttpRequest) { // IE7+, Firefox, Chrome, Opera, Safari 浏览器执行代码 xmlhttp = new XMLHttpRequest(); } else { // IE6, IE5 浏览器执行代码 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange = function () { if (xmlhttp.readyState == 4 && xmlhttp.status == 200 && xmlhttp.responseText) { document.getElementById("result").innerHTML = UTFTranslate.ReChange(xmlhttp.responseText).slice(1, -1).replace("\"",'"'); } } xmlhttp.open("POST", "https://********", true); xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); xmlhttp.send(document.getElementById("book").value); } </script></head><body><div class="mui-content" style="margin-top: 50px"> <h3 style="text-align: center"> 图书检索系统 </h3> <div class="mui-content-padded" style="margin: 10px; margin-top: 20px"> <div class="mui-input-row mui-search"> <input type="search" class="mui-input-clear" placeholder=" 请输入图书名 " id="book"> </div> <div class="mui-button-row"> <button type="button" class="mui-btn mui-btn-numbox-plus" style="width: 100%" onclick="getResult()"> 检索 </button> </div> </div> <div id="result"> <div class="mui-card" style="margin-top: 25px"> <div class="mui-card-content"> <div class="mui-card-content-inner"> 可以在搜索框内输入书籍的全称,或者书籍的简称,系统支持智能检索功能。 </div> </div> </div> </div></div><script src="https://others-1256773370.cos.ap-chengdu.myqcloud.com/booksearch/js/mui.min.js"></script></body></html>
效果展示
为了便于朋友使用,我将这个页面用 Webview 封装成一个 APP,整体效果如下:
总结
这是一个低频使用的 APP,如果是构建在传统服务器上,不是一个明智的选择,而云函数的按量付费,对象存储与 APIGW 的融合,完美解决了资源浪费的问题,同时借用云函数的 APIGW 触发器,可以很简单轻松的替代传统的 Web 框架和部分服务器软件的安装和使用、维护等。这个例子非常小,但却是一个有趣的小工具,除了图书查询之外,我们还可以继续拓展构建其它系统,例如成绩查询等。
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