前言✨博主介绍一线全栈工程师毕设实战引路人。技术栈覆盖Java、Python、C#、PHP、Node.js及UniApp跨端开发擅长多语言项目落地与架构设计。持续分享毕设源码、开题报告、技术选型心得与职场踩坑经验。用工程化思维写代码帮你把毕设做成作品集。精彩专栏 推荐订阅Java精品项目案例【3000套】Python精品项目案例【500套】uniapp/微信小程序/安卓app【800套】2026-2027届Java毕业设计优质选题汇总百个热门方向完整推荐✅2026-2027届Python毕业设计优质选题汇总百个热门方向完整推荐✅2026-2027届小程序/APP毕业设计优质选题汇总百个热门方向完整推荐✅✅获取源码请私信✅感兴趣的可以先收藏起来还有大家在毕设选题项目以及论文编写等相关问题都可以找我咨询希望帮助更多的人❤️系统实现用户功能实现电子书籍功能实现用户可以登录平台的全部电子书籍资源。平台生成分类列表然后用户可以自定义排序方式搜索结果页上会显示书籍的主要内容。点击任意一本书的书籍编号、作者、类型标签、状态、章节数、上架时间等核心数据然后跳转到书籍详情页。电子书籍界面有声书籍功能实现有声书籍模块给用户提供了丰富的音频书籍。访问此页面的时候系统会显示所有的有声书籍条目。用户在搜索框中输入关键词或者筛选书籍类型的时候就可以很快找到想看的书。将每本书籍的名称以及作者归类出来便于用户选择播放。有声书籍界面购买会员功能实现该功能可以完成用户对会员服务购买的操作。用户进入个人中心或者相关提示页面可以看见当前所选的会员套餐黄金会员及对应的价、折扣率以及权益。用户购买意向确定后点击购买按钮之后系统就会引导用户完成后续支付操作。购买会员界面笔记信息功能实现用户在阅读过程中产生的个人笔记统一管理在此模块中。用户进入个人中心笔记信息页可以查看到自己所有的创建的笔记。系统可以按照书籍名称或者笔记类型对查询进行分类也可以对历史笔记进行详情查看或者删除操作有效地对个人知识内容进行组织和保存。笔记信息界面管理员功能实现书籍类型管理功能实现管理员用此模块来对平台所有的书籍分类体系进行管理。管理界面用列表的形式展示已经创建或更新的书籍类型。管理员可以对新增的书籍分类进行命名以供以后查找使用。管理员对已有的分类可以进行查看或者删除从而保证书籍分类结构的清晰准确。书籍类型管理界面电子书籍管理功能实现本模块是管理员对平台电子书资源集中管理的后台接口。管理员查看上架电子书的信息即书籍编号、名称、作者、类型、状态、章节数。管理员使用添加功能对平台录入新的电子书需要输入电子书详细属性。对已有的书籍管理员可以进行编辑或者下架。电子书籍管理界面笔记信息管理功能实现管理员使用此功能对全平台用户所产生的一切笔记信息进行监管。系统后台可以显示所有的用户笔记列表管理员可以根据书籍名称或者笔记类型来筛选记录。管理员拥有删除不当笔记的权限也可以通过详情入口查看笔记的具体内容来维护平台的内容环境。笔记信息管理界面有声书籍管理功能实现管理员在这里执行有声书籍资源上传和管理的任务。管理后台给出了所有的有声书籍每一条记录都包含书籍编号、书籍名称、书籍作者、书籍分类信息。管理员可以给平台添加新的有声读物填写必要的元数据。管理员对已发布的音频内容可以查看、管理相关评论或者删除该条内容。有声书籍管理界面热门书籍管理功能实现本模块可以人工操作或者设置平台热门书籍推荐列表。管理员可以通过管理页面查看标注成热门的书。管理员可以根据运营策略添加操作来把新的书籍加入到热门推荐之中并且可以把不再符合标准的书籍从热门列表中移除出去从而动态地控制前端页面内容的展示。热门书籍管理界面会员等级管理功能实现平台会员体系的配置和维护在此模块完成。管理员界面显示出当前设定的会员等级即黄金会员以及对应的折扣、价格和权益。管理员创建新的会员等级方案设定等级名称、折扣力度、售价和权益。对于已经有的等级方案管理员可以对信息进行调整或者将其下线从而达到灵活的商业策略部署的目的。会员等级管理界面数据库参考CREATE TABLE message_inform ( inform_id int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 通知ID, user_id int(10) unsigned NOT NULL DEFAULT 0 COMMENT 通知人ID, title varchar(255) DEFAULT NULL COMMENT 标题, state varchar(255) DEFAULT NULL COMMENT 状态, type varchar(64) DEFAULT NULL COMMENT 分类, content varchar(255) DEFAULT NULL COMMENT 内容, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, PRIMARY KEY (inform_id) USING BTREE, KEY user_id (user_id) ) ENGINEInnoDB DEFAULT CHARSETutf8 ROW_FORMATDYNAMIC COMMENT通知记录; DROP TABLE IF EXISTS user_group; CREATE TABLE user_group ( group_id mediumint(8) unsigned NOT NULL AUTO_INCREMENT COMMENT 用户组ID, display smallint(4) unsigned NOT NULL DEFAULT 100 COMMENT 显示顺序, name varchar(16) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT COMMENT 名称, description varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 描述, source_table varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 来源表, source_field varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 来源字段, source_id int(10) unsigned NOT NULL DEFAULT 0 COMMENT 来源ID, register smallint(1) unsigned DEFAULT 0 COMMENT 注册位置, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, PRIMARY KEY (group_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT用户组; DROP TABLE IF EXISTS history; CREATE TABLE history ( history_id int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 浏览历史ID, user_id int(10) unsigned NOT NULL DEFAULT 0 COMMENT 浏览人ID, source_table varchar(255) DEFAULT NULL COMMENT 来源表, source_field varchar(255) DEFAULT NULL COMMENT 来源字段, source_id int(10) unsigned NOT NULL DEFAULT 0 COMMENT 来源ID, title varchar(255) DEFAULT NULL COMMENT 标题, img varchar(255) DEFAULT NULL COMMENT 封面, type varchar(64) DEFAULT NULL COMMENT 分类, path varchar(255) DEFAULT NULL COMMENT 路由, params text COMMENT 参数, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, PRIMARY KEY (history_id) USING BTREE, KEY user_id (user_id) ) ENGINEInnoDB DEFAULT CHARSETutf8 ROW_FORMATDYNAMIC COMMENT浏览记录; DROP TABLE IF EXISTS article; CREATE TABLE article ( article_id mediumint(8) unsigned NOT NULL AUTO_INCREMENT COMMENT 文章id, title varchar(125) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT COMMENT 标题, type varchar(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT 0 COMMENT 文章分类, hits int(10) unsigned NOT NULL DEFAULT 0 COMMENT 点击数, praise_len int(11) NOT NULL DEFAULT 0 COMMENT 点赞数, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, source varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 来源, url varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 来源地址, tag varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 标签, content longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 正文, img varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 封面图, description text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 文章描述, PRIMARY KEY (article_id,title) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT文章; DROP TABLE IF EXISTS access_token; CREATE TABLE access_token ( token_id int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT 临时访问牌ID, token varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 临时访问牌, info text CHARACTER SET utf8 COLLATE utf8_general_ci COMMENT 信息, maxage int(2) NOT NULL DEFAULT 2 COMMENT 最大寿命默认2小时, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, user_id int(11) unsigned NOT NULL DEFAULT 0 COMMENT 用户编号, PRIMARY KEY (token_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT登陆访问时长; DROP TABLE IF EXISTS code_token; CREATE TABLE code_token ( code_token_id int(11) NOT NULL AUTO_INCREMENT COMMENT 验证码ID, token varchar(255) CHARACTER SET latin1 COLLATE latin1_swedish_ci DEFAULT NULL COMMENT 令牌, code varchar(255) CHARACTER SET latin1 COLLATE latin1_swedish_ci DEFAULT NULL COMMENT 验证码, expire_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 失效时间, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, PRIMARY KEY (code_token_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci ROW_FORMATCOMPACT COMMENT验证码;代码参考package com.project.demo.controller; import com.project.demo.entity.ElectronicBooks; import com.project.demo.service.ElectronicBooksService; import com.alibaba.fastjson.JSON; import com.project.demo.controller.base.BaseController; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.transaction.annotation.Transactional; import org.springframework.web.bind.annotation.*; import org.springframework.util.StringUtils; import com.project.demo.constant.FindConfig; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import javax.persistence.Query; import javax.servlet.http.HttpServletRequest; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.*; /** * 电子书籍(ElectronicBooks)表控制层 * */ RestController RequestMapping(/electronic_books) public class ElectronicBooksController extends BaseControllerElectronicBooks, ElectronicBooksService { /** * 电子书籍对象 */ Autowired public ElectronicBooksController(ElectronicBooksService service) { setService(service); } PostMapping(/add) Transactional public MapString, Object add(HttpServletRequest request) throws IOException { MapString,Object paramMap service.readBody(request.getReader()); paramMap.entrySet().removeIf(entry - { Object value entry.getValue(); return value instanceof String ((String) value).isEmpty(); }); ElectronicBooks electronic_books new ElectronicBooks(); electronic_books.setBook_number(paramMap.get(book_number)null?null:String.valueOf(paramMap.get(book_number))); electronic_books.setBook_name(paramMap.get(book_name)null?null:String.valueOf(paramMap.get(book_name))); electronic_books.setAuthors_name(paramMap.get(authors_name)null?null:String.valueOf(paramMap.get(authors_name))); electronic_books.setTypes_of_books(paramMap.get(types_of_books)null?null:String.valueOf(paramMap.get(types_of_books))); electronic_books.setBook_labels(paramMap.get(book_labels)null?null:String.valueOf(paramMap.get(book_labels))); electronic_books.setBook_status(paramMap.get(book_status)null?null:String.valueOf(paramMap.get(book_status))); electronic_books.setSection_number_of_general_chapter(paramMap.get(section_number_of_general_chapter)null?null:Double.valueOf(String.valueOf(paramMap.get(section_number_of_general_chapter)))); if (paramMap.get(shelf_time ) ! null !StringUtils.isEmpty(String.valueOf(paramMap.get(shelf_time )))) { String timStr String.valueOf(paramMap.get(shelf_time )); electronic_books.setShelf_time(parseToTimestamp(timStr)); } else { electronic_books.setShelf_time(null); } electronic_books.setBook_cover(paramMap.get(book_cover)null?null:String.valueOf(paramMap.get(book_cover))); electronic_books.setSynopsis_of_story(paramMap.get(synopsis_of_story)null?null:String.valueOf(paramMap.get(synopsis_of_story))); electronic_books.setHits(paramMap.get(hits)null?null:Integer.valueOf(String.valueOf(paramMap.get(hits)))); electronic_books.setPraise_len(paramMap.get(praise_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(praise_len)))); electronic_books.setCollect_len(paramMap.get(collect_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(collect_len)))); electronic_books.setComment_len(paramMap.get(comment_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(comment_len)))); electronic_books.setNote_information_limit_times(paramMap.get(note_information_limit_times)null?null:String.valueOf(paramMap.get(note_information_limit_times))); electronic_books.setCreate_by(paramMap.get(create_by)null?null:Integer.valueOf(String.valueOf(paramMap.get(create_by)))); this.addEntity(electronic_books); System.out.println(电子书籍新增成功); return success(1); } PostMapping(/set) Transactional public MapString, Object set(HttpServletRequest request) throws IOException { MapString,String queryMap service.readQuery(request); MapString,String configMap service.readConfig(request); MapString,Object paramMap service.readBody(request.getReader()); paramMap.entrySet().removeIf(entry - { Object value entry.getValue(); return value instanceof String ((String) value).isEmpty(); }); ElectronicBooks electronic_books new ElectronicBooks(); electronic_books.setBook_number(paramMap.get(book_number)null?null:String.valueOf(paramMap.get(book_number))); electronic_books.setBook_name(paramMap.get(book_name)null?null:String.valueOf(paramMap.get(book_name))); electronic_books.setAuthors_name(paramMap.get(authors_name)null?null:String.valueOf(paramMap.get(authors_name))); electronic_books.setTypes_of_books(paramMap.get(types_of_books)null?null:String.valueOf(paramMap.get(types_of_books))); electronic_books.setBook_labels(paramMap.get(book_labels)null?null:String.valueOf(paramMap.get(book_labels))); electronic_books.setBook_status(paramMap.get(book_status)null?null:String.valueOf(paramMap.get(book_status))); electronic_books.setSection_number_of_general_chapter(paramMap.get(section_number_of_general_chapter)null?null:Double.valueOf(String.valueOf(paramMap.get(section_number_of_general_chapter)))); if (paramMap.get(shelf_time ) ! null !StringUtils.isEmpty(String.valueOf(paramMap.get(shelf_time )))) { String timStr String.valueOf(paramMap.get(shelf_time )); electronic_books.setShelf_time(parseToTimestamp(timStr)); } else { electronic_books.setShelf_time(null); } electronic_books.setBook_cover(paramMap.get(book_cover)null?null:String.valueOf(paramMap.get(book_cover))); electronic_books.setSynopsis_of_story(paramMap.get(synopsis_of_story)null?null:String.valueOf(paramMap.get(synopsis_of_story))); electronic_books.setHits(paramMap.get(hits)null?null:Integer.valueOf(String.valueOf(paramMap.get(hits)))); electronic_books.setPraise_len(paramMap.get(praise_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(praise_len)))); electronic_books.setCollect_len(paramMap.get(collect_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(collect_len)))); electronic_books.setComment_len(paramMap.get(comment_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(comment_len)))); electronic_books.setNote_information_limit_times(paramMap.get(note_information_limit_times)null?null:String.valueOf(paramMap.get(note_information_limit_times))); this.setEntity(queryMap,configMap,electronic_books); System.out.println(电子书籍修改成功); return success(1); } /** * 协同过滤算法 */ RequestMapping(/get_hits_list) public MapString, Object getHits(HttpServletRequest request) { MapString,String paramMap service.readQuery(request); if (paramMap.get(user_id)null||paramMap.get(user_id).equals()){ return this.getList(request); }else{ try { if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ paramMap.put(examine_state, URLDecoder.decode(paramMap.get(examine_state), UTF-8)); } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } //查询该用户常点击 String hitsSource SELECT COUNT( hits_id ) AS hits_count, source_id FROM hits WHERE source_table electronic_books AND user_id paramMap.get(user_id) GROUP BY source_id; ListMapString,Object hitsSourceList service.selectMapBaseList(hitsSource); //判断是否为空,代表当前用户暂无点击数据那么取其他用户的最常点击 if (hitsSourceListnull || hitsSourceList.size()0){ hitsSource SELECT COUNT( hits_id ) AS hits_count, source_id FROM hits WHERE source_table electronic_books GROUP BY source_id; hitsSourceList service.selectMapBaseList(hitsSource); } String table_name electronic_books; String table_id electronic_books_id; String type_name types_of_books; //二次处理-如果依旧为空则取添加时间前12条数据 if (hitsSourceListnull || hitsSourceList.size()0){ String sql SELECT * FROM table_name; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql where examine_state paramMap.get(examine_state); } sql sql ORDER BY create_time DESC LIMIT 0,12; List list service.selectBaseList(sql); MapString, Object mapnew HashMap(); map.put(list,list); map.put(count,list.size()); return success(map); }else { //对用户点击量进行排序取得最大值 double max 0.0; int maxSourceId 0; for (MapString,Object map:hitsSourceList) { double hitsCount Double.parseDouble(String.valueOf(map.get(hits_count))); if (hitsCount max){ max hitsCount; maxSourceId Integer.parseInt(String.valueOf(map.get(source_id))); } } //查询该用户点击最大值的种类 String typeSql SELECT type_name FROM table_name WHERE table_id maxSourceId; ListMapString,Object typeList service.selectMapBaseList(typeSql); //如果为空则取添加时间前12条数据 if (typeListnull || typeList.size()0){ String sql SELECT * FROM table_name; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql where examine_state paramMap.get(examine_state); } sql sql ORDER BY create_time DESC LIMIT 0,12; List list service.selectBaseList(sql); MapString, Object mapnew HashMap(); map.put(list,list); map.put(count,list.size()); return success(map); }else { String typeName String.valueOf(typeList.get(0).get(type_name)); //查询该种类的数据 String sql SELECT * FROM table_name WHERE type_name typeName ; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql and examine_state paramMap.get(examine_state) ORDER BY create_time DESC limit 0,12; }else { sql sql ORDER BY create_time DESC limit 0,12; } List resultList service.selectBaseList(sql); //如果为空则取添加时间前12条数据 if (resultListnull || resultList.size()0){ sql SELECT * FROM table_name; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql where examine_state paramMap.get(examine_state); } sql sql ORDER BY create_time DESC LIMIT 0,12; List list service.selectBaseList(sql); MapString, Object mapnew HashMap(); map.put(list,list); map.put(count,list.size()); return success(map); }else { //对结果排序-冒泡排序 for (int i resultList.size() - 1; i 0; i--) { // 是否发生交换 boolean swapped false; for (int j 0; j i; j) { ElectronicBooks leftMap (ElectronicBooks) resultList.get(j); ElectronicBooks rightMap (ElectronicBooks) resultList.get(j 1); if (leftMap.getHits()rightMap.getHits()){ ElectronicBooks temp rightMap; rightMap leftMap; leftMap temp; swapped true; } } if (!swapped) { // 没有发生交换则说明数组已有序,停止冒泡 break; } } //判断是否有12条-如果不足则计算其他类型和用户当前点击最多的余弦相似度依次往下取得数据 if (resultList.size()12) { String typeCosSql SELECT type_name FROM table_name WHERE type_name typeName GROUP BY type_name; ListMapString, Object typeCosList service.selectMapBaseList(typeCosSql); if (typeCosList ! null typeCosList.size() 0) { for (MapString, Object typeCos : typeCosList) { typeCos.put(cosSim, calculateCosineSimilarity(typeName, String.valueOf(typeCos.get(type_name)))); } //冒泡根据相似度排序 for (int i typeCosList.size() - 1; i 0; i--) { // 是否发生交换 boolean swapped false; for (int j 0; j i; j) { MapString, Object leftMap typeCosList.get(j); MapString, Object rightMap typeCosList.get(j 1); if (Double.parseDouble(String.valueOf(leftMap.get(cosSim ))) Double.parseDouble(String.valueOf(rightMap.get(cosSim )))) { MapString, Object temp rightMap; rightMap leftMap; leftMap temp; swapped true; } } if (!swapped) { // 没有发生交换则说明数组已有序,停止冒泡 break; } } //逐条加入数据 for (MapString, Object typeCos : typeCosList) { sql SELECT * FROM table_name WHERE type_name String.valueOf(typeCos.get(type_name)) ; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql and examine_state paramMap.get(examine_state); } sql sql ORDER BY create_time DESC LIMIT 0, (12 - resultList.size()); List list service.selectBaseList(sql); if (list ! null list.size() 0) { resultList.addAll(list); } if (resultList.size() 12) { break; } } } } MapString, Object mapnew HashMap(); map.put(list,resultList); map.put(count,resultList.size()); return success(map); } } } } } /** * 计算余弦相似度 */ private double calculateCosineSimilarity(String text1, String text2) { // 将文本分词并转换为向量表示 MapCharacter, Integer wordCount1 getWordCount(text1); MapCharacter, Integer wordCount2 getWordCount(text2); double dotProduct 0.0; double magnitude1 0.0; double magnitude2 0.0; for (Character word : wordCount1.keySet()) { int count1 wordCount1.get(word); int count2 wordCount2.getOrDefault(word, 0); dotProduct count1 * count2; magnitude1 Math.pow(count1, 2); } for (Integer count : wordCount2.values()) { magnitude2 Math.pow(count, 2); } magnitude1 Math.sqrt(magnitude1); magnitude2 Math.sqrt(magnitude2); if (magnitude1 0.0 || magnitude2 0.0) { return 0.0; } return dotProduct / (magnitude1 * magnitude2); } private static MapCharacter, Integer getWordCount(String text) { MapCharacter, Integer wordCount new HashMap(); for (char c : text.toCharArray()) { wordCount.put(c, wordCount.getOrDefault(c, 0) 1); } return wordCount; } /** * 根据 user_id 查询用户评分列表和数量 * * param userId 用户ID * return 评分列表和数量 */ GetMapping(/get_score) public MapString,Object getScore(Long userId) { MapString,String queryMap new HashMap(); queryMap.put(user_id,String.valueOf(userId)); return this.getListByMap(queryMap); } } package com.project.demo.controller; import com.project.demo.entity.TypesOfBooks; import com.project.demo.service.TypesOfBooksService; import com.alibaba.fastjson.JSON; import com.project.demo.controller.base.BaseController; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.transaction.annotation.Transactional; import org.springframework.web.bind.annotation.*; import org.springframework.util.StringUtils; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import javax.persistence.Query; import javax.servlet.http.HttpServletRequest; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.*; /** * 书籍类型(TypesOfBooks)表控制层 * */ RestController RequestMapping(/types_of_books) public class TypesOfBooksController extends BaseControllerTypesOfBooks, TypesOfBooksService { /** * 书籍类型对象 */ Autowired public TypesOfBooksController(TypesOfBooksService service) { setService(service); } PostMapping(/add) Transactional public MapString, Object add(HttpServletRequest request) throws IOException { MapString,Object paramMap service.readBody(request.getReader()); paramMap.entrySet().removeIf(entry - { Object value entry.getValue(); return value instanceof String ((String) value).isEmpty(); }); TypesOfBooks types_of_books new TypesOfBooks(); types_of_books.setBook_class_nameification(paramMap.get(book_class_nameification)null?null:String.valueOf(paramMap.get(book_class_nameification))); types_of_books.setCreate_by(paramMap.get(create_by)null?null:Integer.valueOf(String.valueOf(paramMap.get(create_by)))); this.addEntity(types_of_books); System.out.println(书籍类型新增成功); return success(1); } PostMapping(/set) Transactional public MapString, Object set(HttpServletRequest request) throws IOException { MapString,String queryMap service.readQuery(request); MapString,String configMap service.readConfig(request); MapString,Object paramMap service.readBody(request.getReader()); paramMap.entrySet().removeIf(entry - { Object value entry.getValue(); return value instanceof String ((String) value).isEmpty(); }); TypesOfBooks types_of_books new TypesOfBooks(); types_of_books.setBook_class_nameification(paramMap.get(book_class_nameification)null?null:String.valueOf(paramMap.get(book_class_nameification))); this.setEntity(queryMap,configMap,types_of_books); System.out.println(书籍类型修改成功); return success(1); } }前端基于Vue.js框架构建用户界面使用HTML5、CSS3和JavaScript实现页面结构与交互逻辑通过Vue Router管理路由Vuex或Pinia维护全局状态。采用Element UI或Vant组件库快速搭建界面Axios封装HTTP请求实现与后端的数据通信。后端基于springboot框架搭建遵循Controller-Service-Mapper三层架构。Controller层接收前端请求并校验参数Service层处理核心业务逻辑Mapper层通过MyBatis或MyBatis-Plus完成数据库操作。使用Spring Security或Shiro结合JWT实现用户认证与权限控制。数据库采用MySQL存储持久化数据Redis缓存热点信息以提升系统性能。开发工具使用IDEA开发后端VSCode或HBuilderX开发前端Git进行版本管理Maven和npm分别管理前后端依赖。精彩专栏 推荐订阅Java精品项目案例【3000套】Python精品项目案例【500套】uniapp/微信小程序/安卓app【800套】2026-2027届Java毕业设计优质选题汇总百个热门方向完整推荐✅2026-2027届Python毕业设计优质选题汇总百个热门方向完整推荐✅2026-2027届小程序/APP毕业设计优质选题汇总百个热门方向完整推荐✅✅获取源码请私信✅感兴趣的可以先收藏起来还有大家在毕设选题项目以及论文编写等相关问题都可以找我咨询希望帮助更多的人❤️ springboot数字化阅读平台52399-计算机课程设计、毕业设计
前言✨博主介绍一线全栈工程师毕设实战引路人。技术栈覆盖Java、Python、C#、PHP、Node.js及UniApp跨端开发擅长多语言项目落地与架构设计。持续分享毕设源码、开题报告、技术选型心得与职场踩坑经验。用工程化思维写代码帮你把毕设做成作品集。精彩专栏 推荐订阅Java精品项目案例【3000套】Python精品项目案例【500套】uniapp/微信小程序/安卓app【800套】2026-2027届Java毕业设计优质选题汇总百个热门方向完整推荐✅2026-2027届Python毕业设计优质选题汇总百个热门方向完整推荐✅2026-2027届小程序/APP毕业设计优质选题汇总百个热门方向完整推荐✅✅获取源码请私信✅感兴趣的可以先收藏起来还有大家在毕设选题项目以及论文编写等相关问题都可以找我咨询希望帮助更多的人❤️系统实现用户功能实现电子书籍功能实现用户可以登录平台的全部电子书籍资源。平台生成分类列表然后用户可以自定义排序方式搜索结果页上会显示书籍的主要内容。点击任意一本书的书籍编号、作者、类型标签、状态、章节数、上架时间等核心数据然后跳转到书籍详情页。电子书籍界面有声书籍功能实现有声书籍模块给用户提供了丰富的音频书籍。访问此页面的时候系统会显示所有的有声书籍条目。用户在搜索框中输入关键词或者筛选书籍类型的时候就可以很快找到想看的书。将每本书籍的名称以及作者归类出来便于用户选择播放。有声书籍界面购买会员功能实现该功能可以完成用户对会员服务购买的操作。用户进入个人中心或者相关提示页面可以看见当前所选的会员套餐黄金会员及对应的价、折扣率以及权益。用户购买意向确定后点击购买按钮之后系统就会引导用户完成后续支付操作。购买会员界面笔记信息功能实现用户在阅读过程中产生的个人笔记统一管理在此模块中。用户进入个人中心笔记信息页可以查看到自己所有的创建的笔记。系统可以按照书籍名称或者笔记类型对查询进行分类也可以对历史笔记进行详情查看或者删除操作有效地对个人知识内容进行组织和保存。笔记信息界面管理员功能实现书籍类型管理功能实现管理员用此模块来对平台所有的书籍分类体系进行管理。管理界面用列表的形式展示已经创建或更新的书籍类型。管理员可以对新增的书籍分类进行命名以供以后查找使用。管理员对已有的分类可以进行查看或者删除从而保证书籍分类结构的清晰准确。书籍类型管理界面电子书籍管理功能实现本模块是管理员对平台电子书资源集中管理的后台接口。管理员查看上架电子书的信息即书籍编号、名称、作者、类型、状态、章节数。管理员使用添加功能对平台录入新的电子书需要输入电子书详细属性。对已有的书籍管理员可以进行编辑或者下架。电子书籍管理界面笔记信息管理功能实现管理员使用此功能对全平台用户所产生的一切笔记信息进行监管。系统后台可以显示所有的用户笔记列表管理员可以根据书籍名称或者笔记类型来筛选记录。管理员拥有删除不当笔记的权限也可以通过详情入口查看笔记的具体内容来维护平台的内容环境。笔记信息管理界面有声书籍管理功能实现管理员在这里执行有声书籍资源上传和管理的任务。管理后台给出了所有的有声书籍每一条记录都包含书籍编号、书籍名称、书籍作者、书籍分类信息。管理员可以给平台添加新的有声读物填写必要的元数据。管理员对已发布的音频内容可以查看、管理相关评论或者删除该条内容。有声书籍管理界面热门书籍管理功能实现本模块可以人工操作或者设置平台热门书籍推荐列表。管理员可以通过管理页面查看标注成热门的书。管理员可以根据运营策略添加操作来把新的书籍加入到热门推荐之中并且可以把不再符合标准的书籍从热门列表中移除出去从而动态地控制前端页面内容的展示。热门书籍管理界面会员等级管理功能实现平台会员体系的配置和维护在此模块完成。管理员界面显示出当前设定的会员等级即黄金会员以及对应的折扣、价格和权益。管理员创建新的会员等级方案设定等级名称、折扣力度、售价和权益。对于已经有的等级方案管理员可以对信息进行调整或者将其下线从而达到灵活的商业策略部署的目的。会员等级管理界面数据库参考CREATE TABLE message_inform ( inform_id int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 通知ID, user_id int(10) unsigned NOT NULL DEFAULT 0 COMMENT 通知人ID, title varchar(255) DEFAULT NULL COMMENT 标题, state varchar(255) DEFAULT NULL COMMENT 状态, type varchar(64) DEFAULT NULL COMMENT 分类, content varchar(255) DEFAULT NULL COMMENT 内容, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, PRIMARY KEY (inform_id) USING BTREE, KEY user_id (user_id) ) ENGINEInnoDB DEFAULT CHARSETutf8 ROW_FORMATDYNAMIC COMMENT通知记录; DROP TABLE IF EXISTS user_group; CREATE TABLE user_group ( group_id mediumint(8) unsigned NOT NULL AUTO_INCREMENT COMMENT 用户组ID, display smallint(4) unsigned NOT NULL DEFAULT 100 COMMENT 显示顺序, name varchar(16) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT COMMENT 名称, description varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 描述, source_table varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 来源表, source_field varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 来源字段, source_id int(10) unsigned NOT NULL DEFAULT 0 COMMENT 来源ID, register smallint(1) unsigned DEFAULT 0 COMMENT 注册位置, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, PRIMARY KEY (group_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT用户组; DROP TABLE IF EXISTS history; CREATE TABLE history ( history_id int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 浏览历史ID, user_id int(10) unsigned NOT NULL DEFAULT 0 COMMENT 浏览人ID, source_table varchar(255) DEFAULT NULL COMMENT 来源表, source_field varchar(255) DEFAULT NULL COMMENT 来源字段, source_id int(10) unsigned NOT NULL DEFAULT 0 COMMENT 来源ID, title varchar(255) DEFAULT NULL COMMENT 标题, img varchar(255) DEFAULT NULL COMMENT 封面, type varchar(64) DEFAULT NULL COMMENT 分类, path varchar(255) DEFAULT NULL COMMENT 路由, params text COMMENT 参数, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, PRIMARY KEY (history_id) USING BTREE, KEY user_id (user_id) ) ENGINEInnoDB DEFAULT CHARSETutf8 ROW_FORMATDYNAMIC COMMENT浏览记录; DROP TABLE IF EXISTS article; CREATE TABLE article ( article_id mediumint(8) unsigned NOT NULL AUTO_INCREMENT COMMENT 文章id, title varchar(125) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT COMMENT 标题, type varchar(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT 0 COMMENT 文章分类, hits int(10) unsigned NOT NULL DEFAULT 0 COMMENT 点击数, praise_len int(11) NOT NULL DEFAULT 0 COMMENT 点赞数, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, source varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 来源, url varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 来源地址, tag varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 标签, content longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 正文, img varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 封面图, description text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 文章描述, PRIMARY KEY (article_id,title) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT文章; DROP TABLE IF EXISTS access_token; CREATE TABLE access_token ( token_id int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT 临时访问牌ID, token varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 临时访问牌, info text CHARACTER SET utf8 COLLATE utf8_general_ci COMMENT 信息, maxage int(2) NOT NULL DEFAULT 2 COMMENT 最大寿命默认2小时, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, user_id int(11) unsigned NOT NULL DEFAULT 0 COMMENT 用户编号, PRIMARY KEY (token_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT登陆访问时长; DROP TABLE IF EXISTS code_token; CREATE TABLE code_token ( code_token_id int(11) NOT NULL AUTO_INCREMENT COMMENT 验证码ID, token varchar(255) CHARACTER SET latin1 COLLATE latin1_swedish_ci DEFAULT NULL COMMENT 令牌, code varchar(255) CHARACTER SET latin1 COLLATE latin1_swedish_ci DEFAULT NULL COMMENT 验证码, expire_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 失效时间, create_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 创建时间, update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 更新时间, PRIMARY KEY (code_token_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci ROW_FORMATCOMPACT COMMENT验证码;代码参考package com.project.demo.controller; import com.project.demo.entity.ElectronicBooks; import com.project.demo.service.ElectronicBooksService; import com.alibaba.fastjson.JSON; import com.project.demo.controller.base.BaseController; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.transaction.annotation.Transactional; import org.springframework.web.bind.annotation.*; import org.springframework.util.StringUtils; import com.project.demo.constant.FindConfig; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import javax.persistence.Query; import javax.servlet.http.HttpServletRequest; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.*; /** * 电子书籍(ElectronicBooks)表控制层 * */ RestController RequestMapping(/electronic_books) public class ElectronicBooksController extends BaseControllerElectronicBooks, ElectronicBooksService { /** * 电子书籍对象 */ Autowired public ElectronicBooksController(ElectronicBooksService service) { setService(service); } PostMapping(/add) Transactional public MapString, Object add(HttpServletRequest request) throws IOException { MapString,Object paramMap service.readBody(request.getReader()); paramMap.entrySet().removeIf(entry - { Object value entry.getValue(); return value instanceof String ((String) value).isEmpty(); }); ElectronicBooks electronic_books new ElectronicBooks(); electronic_books.setBook_number(paramMap.get(book_number)null?null:String.valueOf(paramMap.get(book_number))); electronic_books.setBook_name(paramMap.get(book_name)null?null:String.valueOf(paramMap.get(book_name))); electronic_books.setAuthors_name(paramMap.get(authors_name)null?null:String.valueOf(paramMap.get(authors_name))); electronic_books.setTypes_of_books(paramMap.get(types_of_books)null?null:String.valueOf(paramMap.get(types_of_books))); electronic_books.setBook_labels(paramMap.get(book_labels)null?null:String.valueOf(paramMap.get(book_labels))); electronic_books.setBook_status(paramMap.get(book_status)null?null:String.valueOf(paramMap.get(book_status))); electronic_books.setSection_number_of_general_chapter(paramMap.get(section_number_of_general_chapter)null?null:Double.valueOf(String.valueOf(paramMap.get(section_number_of_general_chapter)))); if (paramMap.get(shelf_time ) ! null !StringUtils.isEmpty(String.valueOf(paramMap.get(shelf_time )))) { String timStr String.valueOf(paramMap.get(shelf_time )); electronic_books.setShelf_time(parseToTimestamp(timStr)); } else { electronic_books.setShelf_time(null); } electronic_books.setBook_cover(paramMap.get(book_cover)null?null:String.valueOf(paramMap.get(book_cover))); electronic_books.setSynopsis_of_story(paramMap.get(synopsis_of_story)null?null:String.valueOf(paramMap.get(synopsis_of_story))); electronic_books.setHits(paramMap.get(hits)null?null:Integer.valueOf(String.valueOf(paramMap.get(hits)))); electronic_books.setPraise_len(paramMap.get(praise_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(praise_len)))); electronic_books.setCollect_len(paramMap.get(collect_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(collect_len)))); electronic_books.setComment_len(paramMap.get(comment_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(comment_len)))); electronic_books.setNote_information_limit_times(paramMap.get(note_information_limit_times)null?null:String.valueOf(paramMap.get(note_information_limit_times))); electronic_books.setCreate_by(paramMap.get(create_by)null?null:Integer.valueOf(String.valueOf(paramMap.get(create_by)))); this.addEntity(electronic_books); System.out.println(电子书籍新增成功); return success(1); } PostMapping(/set) Transactional public MapString, Object set(HttpServletRequest request) throws IOException { MapString,String queryMap service.readQuery(request); MapString,String configMap service.readConfig(request); MapString,Object paramMap service.readBody(request.getReader()); paramMap.entrySet().removeIf(entry - { Object value entry.getValue(); return value instanceof String ((String) value).isEmpty(); }); ElectronicBooks electronic_books new ElectronicBooks(); electronic_books.setBook_number(paramMap.get(book_number)null?null:String.valueOf(paramMap.get(book_number))); electronic_books.setBook_name(paramMap.get(book_name)null?null:String.valueOf(paramMap.get(book_name))); electronic_books.setAuthors_name(paramMap.get(authors_name)null?null:String.valueOf(paramMap.get(authors_name))); electronic_books.setTypes_of_books(paramMap.get(types_of_books)null?null:String.valueOf(paramMap.get(types_of_books))); electronic_books.setBook_labels(paramMap.get(book_labels)null?null:String.valueOf(paramMap.get(book_labels))); electronic_books.setBook_status(paramMap.get(book_status)null?null:String.valueOf(paramMap.get(book_status))); electronic_books.setSection_number_of_general_chapter(paramMap.get(section_number_of_general_chapter)null?null:Double.valueOf(String.valueOf(paramMap.get(section_number_of_general_chapter)))); if (paramMap.get(shelf_time ) ! null !StringUtils.isEmpty(String.valueOf(paramMap.get(shelf_time )))) { String timStr String.valueOf(paramMap.get(shelf_time )); electronic_books.setShelf_time(parseToTimestamp(timStr)); } else { electronic_books.setShelf_time(null); } electronic_books.setBook_cover(paramMap.get(book_cover)null?null:String.valueOf(paramMap.get(book_cover))); electronic_books.setSynopsis_of_story(paramMap.get(synopsis_of_story)null?null:String.valueOf(paramMap.get(synopsis_of_story))); electronic_books.setHits(paramMap.get(hits)null?null:Integer.valueOf(String.valueOf(paramMap.get(hits)))); electronic_books.setPraise_len(paramMap.get(praise_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(praise_len)))); electronic_books.setCollect_len(paramMap.get(collect_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(collect_len)))); electronic_books.setComment_len(paramMap.get(comment_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(comment_len)))); electronic_books.setNote_information_limit_times(paramMap.get(note_information_limit_times)null?null:String.valueOf(paramMap.get(note_information_limit_times))); this.setEntity(queryMap,configMap,electronic_books); System.out.println(电子书籍修改成功); return success(1); } /** * 协同过滤算法 */ RequestMapping(/get_hits_list) public MapString, Object getHits(HttpServletRequest request) { MapString,String paramMap service.readQuery(request); if (paramMap.get(user_id)null||paramMap.get(user_id).equals()){ return this.getList(request); }else{ try { if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ paramMap.put(examine_state, URLDecoder.decode(paramMap.get(examine_state), UTF-8)); } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } //查询该用户常点击 String hitsSource SELECT COUNT( hits_id ) AS hits_count, source_id FROM hits WHERE source_table electronic_books AND user_id paramMap.get(user_id) GROUP BY source_id; ListMapString,Object hitsSourceList service.selectMapBaseList(hitsSource); //判断是否为空,代表当前用户暂无点击数据那么取其他用户的最常点击 if (hitsSourceListnull || hitsSourceList.size()0){ hitsSource SELECT COUNT( hits_id ) AS hits_count, source_id FROM hits WHERE source_table electronic_books GROUP BY source_id; hitsSourceList service.selectMapBaseList(hitsSource); } String table_name electronic_books; String table_id electronic_books_id; String type_name types_of_books; //二次处理-如果依旧为空则取添加时间前12条数据 if (hitsSourceListnull || hitsSourceList.size()0){ String sql SELECT * FROM table_name; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql where examine_state paramMap.get(examine_state); } sql sql ORDER BY create_time DESC LIMIT 0,12; List list service.selectBaseList(sql); MapString, Object mapnew HashMap(); map.put(list,list); map.put(count,list.size()); return success(map); }else { //对用户点击量进行排序取得最大值 double max 0.0; int maxSourceId 0; for (MapString,Object map:hitsSourceList) { double hitsCount Double.parseDouble(String.valueOf(map.get(hits_count))); if (hitsCount max){ max hitsCount; maxSourceId Integer.parseInt(String.valueOf(map.get(source_id))); } } //查询该用户点击最大值的种类 String typeSql SELECT type_name FROM table_name WHERE table_id maxSourceId; ListMapString,Object typeList service.selectMapBaseList(typeSql); //如果为空则取添加时间前12条数据 if (typeListnull || typeList.size()0){ String sql SELECT * FROM table_name; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql where examine_state paramMap.get(examine_state); } sql sql ORDER BY create_time DESC LIMIT 0,12; List list service.selectBaseList(sql); MapString, Object mapnew HashMap(); map.put(list,list); map.put(count,list.size()); return success(map); }else { String typeName String.valueOf(typeList.get(0).get(type_name)); //查询该种类的数据 String sql SELECT * FROM table_name WHERE type_name typeName ; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql and examine_state paramMap.get(examine_state) ORDER BY create_time DESC limit 0,12; }else { sql sql ORDER BY create_time DESC limit 0,12; } List resultList service.selectBaseList(sql); //如果为空则取添加时间前12条数据 if (resultListnull || resultList.size()0){ sql SELECT * FROM table_name; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql where examine_state paramMap.get(examine_state); } sql sql ORDER BY create_time DESC LIMIT 0,12; List list service.selectBaseList(sql); MapString, Object mapnew HashMap(); map.put(list,list); map.put(count,list.size()); return success(map); }else { //对结果排序-冒泡排序 for (int i resultList.size() - 1; i 0; i--) { // 是否发生交换 boolean swapped false; for (int j 0; j i; j) { ElectronicBooks leftMap (ElectronicBooks) resultList.get(j); ElectronicBooks rightMap (ElectronicBooks) resultList.get(j 1); if (leftMap.getHits()rightMap.getHits()){ ElectronicBooks temp rightMap; rightMap leftMap; leftMap temp; swapped true; } } if (!swapped) { // 没有发生交换则说明数组已有序,停止冒泡 break; } } //判断是否有12条-如果不足则计算其他类型和用户当前点击最多的余弦相似度依次往下取得数据 if (resultList.size()12) { String typeCosSql SELECT type_name FROM table_name WHERE type_name typeName GROUP BY type_name; ListMapString, Object typeCosList service.selectMapBaseList(typeCosSql); if (typeCosList ! null typeCosList.size() 0) { for (MapString, Object typeCos : typeCosList) { typeCos.put(cosSim, calculateCosineSimilarity(typeName, String.valueOf(typeCos.get(type_name)))); } //冒泡根据相似度排序 for (int i typeCosList.size() - 1; i 0; i--) { // 是否发生交换 boolean swapped false; for (int j 0; j i; j) { MapString, Object leftMap typeCosList.get(j); MapString, Object rightMap typeCosList.get(j 1); if (Double.parseDouble(String.valueOf(leftMap.get(cosSim ))) Double.parseDouble(String.valueOf(rightMap.get(cosSim )))) { MapString, Object temp rightMap; rightMap leftMap; leftMap temp; swapped true; } } if (!swapped) { // 没有发生交换则说明数组已有序,停止冒泡 break; } } //逐条加入数据 for (MapString, Object typeCos : typeCosList) { sql SELECT * FROM table_name WHERE type_name String.valueOf(typeCos.get(type_name)) ; if (paramMap.get(examine_state)!null !paramMap.get(examine_state).equals()){ sql sql and examine_state paramMap.get(examine_state); } sql sql ORDER BY create_time DESC LIMIT 0, (12 - resultList.size()); List list service.selectBaseList(sql); if (list ! null list.size() 0) { resultList.addAll(list); } if (resultList.size() 12) { break; } } } } MapString, Object mapnew HashMap(); map.put(list,resultList); map.put(count,resultList.size()); return success(map); } } } } } /** * 计算余弦相似度 */ private double calculateCosineSimilarity(String text1, String text2) { // 将文本分词并转换为向量表示 MapCharacter, Integer wordCount1 getWordCount(text1); MapCharacter, Integer wordCount2 getWordCount(text2); double dotProduct 0.0; double magnitude1 0.0; double magnitude2 0.0; for (Character word : wordCount1.keySet()) { int count1 wordCount1.get(word); int count2 wordCount2.getOrDefault(word, 0); dotProduct count1 * count2; magnitude1 Math.pow(count1, 2); } for (Integer count : wordCount2.values()) { magnitude2 Math.pow(count, 2); } magnitude1 Math.sqrt(magnitude1); magnitude2 Math.sqrt(magnitude2); if (magnitude1 0.0 || magnitude2 0.0) { return 0.0; } return dotProduct / (magnitude1 * magnitude2); } private static MapCharacter, Integer getWordCount(String text) { MapCharacter, Integer wordCount new HashMap(); for (char c : text.toCharArray()) { wordCount.put(c, wordCount.getOrDefault(c, 0) 1); } return wordCount; } /** * 根据 user_id 查询用户评分列表和数量 * * param userId 用户ID * return 评分列表和数量 */ GetMapping(/get_score) public MapString,Object getScore(Long userId) { MapString,String queryMap new HashMap(); queryMap.put(user_id,String.valueOf(userId)); return this.getListByMap(queryMap); } } package com.project.demo.controller; import com.project.demo.entity.TypesOfBooks; import com.project.demo.service.TypesOfBooksService; import com.alibaba.fastjson.JSON; import com.project.demo.controller.base.BaseController; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.transaction.annotation.Transactional; import org.springframework.web.bind.annotation.*; import org.springframework.util.StringUtils; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import javax.persistence.Query; import javax.servlet.http.HttpServletRequest; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.*; /** * 书籍类型(TypesOfBooks)表控制层 * */ RestController RequestMapping(/types_of_books) public class TypesOfBooksController extends BaseControllerTypesOfBooks, TypesOfBooksService { /** * 书籍类型对象 */ Autowired public TypesOfBooksController(TypesOfBooksService service) { setService(service); } PostMapping(/add) Transactional public MapString, Object add(HttpServletRequest request) throws IOException { MapString,Object paramMap service.readBody(request.getReader()); paramMap.entrySet().removeIf(entry - { Object value entry.getValue(); return value instanceof String ((String) value).isEmpty(); }); TypesOfBooks types_of_books new TypesOfBooks(); types_of_books.setBook_class_nameification(paramMap.get(book_class_nameification)null?null:String.valueOf(paramMap.get(book_class_nameification))); types_of_books.setCreate_by(paramMap.get(create_by)null?null:Integer.valueOf(String.valueOf(paramMap.get(create_by)))); this.addEntity(types_of_books); System.out.println(书籍类型新增成功); return success(1); } PostMapping(/set) Transactional public MapString, Object set(HttpServletRequest request) throws IOException { MapString,String queryMap service.readQuery(request); MapString,String configMap service.readConfig(request); MapString,Object paramMap service.readBody(request.getReader()); paramMap.entrySet().removeIf(entry - { Object value entry.getValue(); return value instanceof String ((String) value).isEmpty(); }); TypesOfBooks types_of_books new TypesOfBooks(); types_of_books.setBook_class_nameification(paramMap.get(book_class_nameification)null?null:String.valueOf(paramMap.get(book_class_nameification))); this.setEntity(queryMap,configMap,types_of_books); System.out.println(书籍类型修改成功); return success(1); } }前端基于Vue.js框架构建用户界面使用HTML5、CSS3和JavaScript实现页面结构与交互逻辑通过Vue Router管理路由Vuex或Pinia维护全局状态。采用Element UI或Vant组件库快速搭建界面Axios封装HTTP请求实现与后端的数据通信。后端基于springboot框架搭建遵循Controller-Service-Mapper三层架构。Controller层接收前端请求并校验参数Service层处理核心业务逻辑Mapper层通过MyBatis或MyBatis-Plus完成数据库操作。使用Spring Security或Shiro结合JWT实现用户认证与权限控制。数据库采用MySQL存储持久化数据Redis缓存热点信息以提升系统性能。开发工具使用IDEA开发后端VSCode或HBuilderX开发前端Git进行版本管理Maven和npm分别管理前后端依赖。精彩专栏 推荐订阅Java精品项目案例【3000套】Python精品项目案例【500套】uniapp/微信小程序/安卓app【800套】2026-2027届Java毕业设计优质选题汇总百个热门方向完整推荐✅2026-2027届Python毕业设计优质选题汇总百个热门方向完整推荐✅2026-2027届小程序/APP毕业设计优质选题汇总百个热门方向完整推荐✅✅获取源码请私信✅感兴趣的可以先收藏起来还有大家在毕设选题项目以及论文编写等相关问题都可以找我咨询希望帮助更多的人❤️