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 推荐订阅海量实战库源码任你选 坐拥Java项目2000套海量实战库源码任你选 坐拥Python项目1000套海量实战库源码任你选 坐拥小程序/app项目500套✅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❤️系统实现普通用户功能实现用户注册模块普通用户在访问系统首页后可选择点击“注册”按钮进入相应的注册页面。在该页面中用户需完成所有注册信息必填项点击页面下方的“注册”按钮。系统在接收到表单数据并完成验证后若信息无误将提示注册成功以便用户立即进行登录操作。注册界面如下图所示。注册界面用户登录模块用户在登录界面点击“登录”按钮后需输入用户名、密码以及验证码以完成身份验证操作。系统在前端会自动对所输入信息进行有效性校验同时检查该用户是否已通过后台审核流程。若审核通过且信息无误则系统将允许用户成功登录并跳转至相应的功能界面反之页面会弹出相应的提示信息提醒用户重新输入或检查相关信息的正确性。登录界面如下图所示。登录界面前台首页模块首页作为用户进入平台的主入口集成导航栏、全局搜索框、轮播广告图及盲盒商品推荐区域布局清晰直观。用户可通过导航快速跳转至资讯、公告或商城等板块搜索功能支持按关键词检索商品与资讯吗通知中心实时推送系统消息在线沟通模块提供即时客服入口便于用户咨询问题或反馈需求。界面如下图所示。首页界面盲盒商品模块盲盒商品模块展示所有在售盲盒产品支持分类浏览与关键词搜索。每个商品详情页包含图片、价格、描述及操作按钮用户可执行立即购买、加入购物车、分享链接或收藏商品。已购买用户可在订单完成后对商品进行评论评论内容将同步至商品页面为其他用户提供参考形成闭环反馈机制。界面如下图所示。盲盒商品详情界面盲盒商品界面商城管理模块商城管理整合用户交易相关功能包括“我的地址”用于维护收货信息“我的订单”展示历史购买记录及当前状态“我的购物车”支持商品增删、数量调整及批量结算。三者协同支撑用户完成从选品到履约的全流程操作界面简洁操作路径明确。界面如下图所示。我的地址界面我的购物车界面我的订单界面留言反馈模块留言反馈模块允许普通用户向平台提交意见、建议或问题描述。用户填写反馈标题与内容后提交系统自动生成工单并关联用户账户。提交后可在个人中心查看反馈记录及管理员回复状态。该通道为平台优化服务提供直接依据同时增强用户参与感与信任度。界面如下图所示。留言反馈界面个人中心模块个人中心作为用户操作聚合页包含个人首页概览、留言反馈记录、配送列表、收藏记录含商品与资讯、点赞记录及评论管理可编辑或删除已发布评论。各子功能以卡片式布局呈现数据实时同步便于用户一站式管理其在平台上的全部互动与交易行为。界面如下图所示。个人中心界面管理员功能实现后台首页模块后台首页为管理员提供全局概览顶部设功能导航栏快速切换模块中部嵌入核心统计图表商品销售金额、销售数量数据按日/周/月动态更新。右侧集成个人信息修改、密码重置及通知中心便于管理员及时掌握运营状况并处理系统消息提升管理效率。界面如下图所示。后台首页界面公共管理模块公共管理负责维护平台前端展示的基础内容包括轮播图与公告信息。管理员可上传、编辑、排序轮播图素材对公告进行新增、修改、删除及详情查看。所有内容变更即时生效于用户端首页。界面如下图所示。轮播图管理界面商城管理模块商城管理聚焦盲盒商品与订单全流程管控。管理员可维护商品信息及分类列表在订单列表中查看所有用户订单执行“配送”操作标记发货并在用户确认收货后更新为“送达”针对售后申请如退换货可进行审核处理确保交易环节规范、透明、可追踪。界面如下图所示。盲盒商品管理界面留言管理模块留言管理模块集中处理用户提交的反馈内容。管理员可查询所有留言记录查看详情含用户信息与反馈内容对有效建议进行审核回复或删除无效/不当留言。回复内容将同步至用户个人中心形成双向沟通闭环提升用户满意度与平台服务质量。界面如下图所示。留言反馈审核界面用户管理模块用户管理模块支持对平台所有账户含管理员与普通用户进行全生命周期管控。管理员可查询用户列表、查看详情执行添加新管理员、删除违规账户或封禁用户等操作所有变更均需二次确认确保用户数据管理的规范性与安全性。界面如下图所示。用户管理界面资讯管理模块资讯管理涵盖资讯内容及其分类的维护管理员可创建、编辑或删除资讯文章与分类标签。每篇资讯支持富文本编辑、封面上传及状态设置如是否置顶。系统提供评论查看功能便于管理员审核用户留言并决定是否公开实现内容生产与互动监管的一体化管理。界面如下图所示。资讯信息管理界面数据库参考CREATE TABLE logistics_delivery ( logistics_delivery_id int(11) NOT NULL AUTO_INCREMENT COMMENT 物流配送ID, order_number varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 订单号, product_name varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 商品名称, purchase_quantity varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 购买数量, total_transaction_amount double(10,2) DEFAULT 0.00 COMMENT 交易总额, the_date_of_issuance date DEFAULT NULL COMMENT 发货日期, delivery_number varchar(30) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 配送订单, ordinary_users int(11) DEFAULT 0 COMMENT 普通用户, shipping_address varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 收货地址, delivery_status varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 配送状态, signing_status varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 签收状态, recommend int(11) NOT NULL DEFAULT 0 COMMENT 智能推荐, contact_name varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 联系人名字, merchant_id int(11) DEFAULT NULL COMMENT 商家id, create_time datetime 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, courier_type int(11) NOT NULL DEFAULT 1 COMMENT 配送方式1商家配送2其他配送, courier_id int(11) DEFAULT NULL COMMENT 配送员ID, courier_name varchar(255) COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 配送员名字, courier_detail longtext COLLATE utf8mb4_general_ci COMMENT 配送详情, PRIMARY KEY (logistics_delivery_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT物流配送; DROP TABLE IF EXISTS goods; CREATE TABLE goods ( goods_id mediumint(8) unsigned NOT NULL AUTO_INCREMENT COMMENT 产品ID, title varchar(125) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 标题, img text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 封面图用于显示于产品列表页, description varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 描述, price_ago double(8,2) unsigned NOT NULL DEFAULT 0.00 COMMENT 原价, price double(8,2) unsigned NOT NULL DEFAULT 0.00 COMMENT 卖价, sales int(10) unsigned NOT NULL DEFAULT 0 COMMENT 销量, inventory int(11) NOT NULL DEFAULT 0 COMMENT 商品库存, type varchar(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT COMMENT 商品分类, hits int(10) unsigned NOT NULL DEFAULT 0 COMMENT 点击量, content longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 正文, img_1 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图1, img_2 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图2, img_3 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图3, img_4 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图4, img_5 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图5, 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, customize_field text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 自定义字段, 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, user_id int(11) unsigned DEFAULT 0 COMMENT 添加人, integral int(11) DEFAULT 0 COMMENT 积分, list_status smallint(1) DEFAULT 1 COMMENT 上架状态0下架1上架, PRIMARY KEY (goods_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT商品信息;代码参考package com.project.demo.controller; import com.project.demo.entity.BlindBoxMerchandise; import com.project.demo.service.BlindBoxMerchandiseService; 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 com.project.demo.entity.Goods; import com.project.demo.service.GoodsService; import java.util.stream.Collectors; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import javax.servlet.http.HttpServletRequest; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.*; /** * 盲盒商品(BlindBoxMerchandise)表控制层 * */ RestController RequestMapping(/blind_box_merchandise) public class BlindBoxMerchandiseController extends BaseControllerBlindBoxMerchandise, BlindBoxMerchandiseService { /** * 盲盒商品对象 */ Autowired public BlindBoxMerchandiseController(BlindBoxMerchandiseService service) { setService(service); } Autowired private GoodsService goodsService; 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(); }); BlindBoxMerchandise blind_box_merchandise new BlindBoxMerchandise(); blind_box_merchandise.setCommodity_source(paramMap.get(commodity_source)null?null:String.valueOf(paramMap.get(commodity_source))); blind_box_merchandise.setHits(paramMap.get(hits)null?null:Integer.valueOf(String.valueOf(paramMap.get(hits)))); blind_box_merchandise.setComment_len(paramMap.get(comment_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(comment_len)))); blind_box_merchandise.setCart_title(paramMap.get(cart_title)null?null:String.valueOf(paramMap.get(cart_title))); blind_box_merchandise.setCart_img(paramMap.get(cart_img)null?null:String.valueOf(paramMap.get(cart_img))); blind_box_merchandise.setCart_description(paramMap.get(cart_description)null?null:String.valueOf(paramMap.get(cart_description))); blind_box_merchandise.setCart_price_ago(paramMap.get(cart_price_ago)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_price_ago)))); blind_box_merchandise.setCart_price(paramMap.get(cart_price)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_price)))); blind_box_merchandise.setCart_inventory(paramMap.get(cart_inventory)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_inventory)))); blind_box_merchandise.setCart_type(paramMap.get(cart_type)null?null:String.valueOf(paramMap.get(cart_type))); blind_box_merchandise.setCart_content(paramMap.get(cart_content)null?null:String.valueOf(paramMap.get(cart_content))); blind_box_merchandise.setCart_img_1(paramMap.get(cart_img_1)null?null:String.valueOf(paramMap.get(cart_img_1))); blind_box_merchandise.setCart_img_2(paramMap.get(cart_img_2)null?null:String.valueOf(paramMap.get(cart_img_2))); blind_box_merchandise.setCart_img_3(paramMap.get(cart_img_3)null?null:String.valueOf(paramMap.get(cart_img_3))); blind_box_merchandise.setCart_img_4(paramMap.get(cart_img_4)null?null:String.valueOf(paramMap.get(cart_img_4))); blind_box_merchandise.setCart_img_5(paramMap.get(cart_img_5)null?null:String.valueOf(paramMap.get(cart_img_5))); blind_box_merchandise.setListStatus(paramMap.get(list_status)null?null:Integer.valueOf(String.valueOf(paramMap.get(list_status)))); blind_box_merchandise.setCreate_by(paramMap.get(create_by)null?null:Integer.valueOf(String.valueOf(paramMap.get(create_by)))); this.addEntity(blind_box_merchandise); System.out.println(盲盒商品新增成功); 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(); }); BlindBoxMerchandise blind_box_merchandise new BlindBoxMerchandise(); blind_box_merchandise.setCommodity_source(paramMap.get(commodity_source)null?null:String.valueOf(paramMap.get(commodity_source))); blind_box_merchandise.setHits(paramMap.get(hits)null?null:Integer.valueOf(String.valueOf(paramMap.get(hits)))); blind_box_merchandise.setComment_len(paramMap.get(comment_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(comment_len)))); blind_box_merchandise.setCart_title(paramMap.get(cart_title)null?null:String.valueOf(paramMap.get(cart_title))); blind_box_merchandise.setCart_img(paramMap.get(cart_img)null?null:String.valueOf(paramMap.get(cart_img))); blind_box_merchandise.setCart_description(paramMap.get(cart_description)null?null:String.valueOf(paramMap.get(cart_description))); blind_box_merchandise.setCart_price_ago(paramMap.get(cart_price_ago)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_price_ago)))); blind_box_merchandise.setCart_price(paramMap.get(cart_price)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_price)))); blind_box_merchandise.setCart_inventory(paramMap.get(cart_inventory)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_inventory)))); blind_box_merchandise.setCart_type(paramMap.get(cart_type)null?null:String.valueOf(paramMap.get(cart_type))); blind_box_merchandise.setCart_content(paramMap.get(cart_content)null?null:String.valueOf(paramMap.get(cart_content))); blind_box_merchandise.setCart_img_1(paramMap.get(cart_img_1)null?null:String.valueOf(paramMap.get(cart_img_1))); blind_box_merchandise.setCart_img_2(paramMap.get(cart_img_2)null?null:String.valueOf(paramMap.get(cart_img_2))); blind_box_merchandise.setCart_img_3(paramMap.get(cart_img_3)null?null:String.valueOf(paramMap.get(cart_img_3))); blind_box_merchandise.setCart_img_4(paramMap.get(cart_img_4)null?null:String.valueOf(paramMap.get(cart_img_4))); blind_box_merchandise.setCart_img_5(paramMap.get(cart_img_5)null?null:String.valueOf(paramMap.get(cart_img_5))); blind_box_merchandise.setListStatus(paramMap.get(list_status)null?null:Integer.valueOf(String.valueOf(paramMap.get(list_status)))); this.setEntity(queryMap,configMap,blind_box_merchandise); System.out.println(盲盒商品修改成功); return success(1); } private static final double PURCHASE_WEIGHT 5.0; // 购买权重 private static final double COLLECT_WEIGHT 3.0; // 收藏权重 private static final double CLICK_WEIGHT 1.0; // 点击权重 private static final double COMMENT_WEIGHT 2.0; // 评论权重 /** * 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()){ MapString,String configMap service.readConfig(request); configMap.computeIfAbsent(FindConfig.PAGE, k - String.valueOf(1)); configMap.computeIfAbsent(FindConfig.SIZE, k - String.valueOf(1)); configMap.put(FindConfig.ORDER_BY, goods_id asc); List goodsList goodsService.selectBaseList(goodsService.select(paramMap, configMap)); MapString, Object map new HashMap(); map.put(list, goodsList); map.put(count, goodsList.size()); return success(map); }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(); } //加权查询 String hitsSource buildCartWeightedSql(paramMap.get(user_id)); ListMapString,Object hitsSourceList goodsService.selectMapBaseList(hitsSource); if (hitsSourceList ! null hitsSourceList.size() 0) { System.out.println(前5条行为数据: ); for (int i 0; i Math.min(5, hitsSourceList.size()); i) { MapString, Object item hitsSourceList.get(i); System.out.println( 商品ID: item.get(goods_id) , 加权分数: item.get(hits_count)); } } //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 buildCartWeightedSql(null); hitsSourceList goodsService.selectMapBaseList(hitsSource); } String table_name goods; String table_id goods_id; String type_name type; //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 goodsService.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; 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(goods_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 goodsService.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 goodsService.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 goodsService.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 goodsService.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) { Goods leftMap (Goods) resultList.get(j); Goods rightMap (Goods) resultList.get(j 1); if (leftMap.getHits()rightMap.getHits()){ Goods 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 goodsService.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 goodsService.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; } /** * 构建加权行为SQL * param userId 用户IDnull表示全局 * return 加权SQL */ private String buildCartWeightedSql(String userId) { // 用户条件 String userCondition (userId ! null !userId.isEmpty()) ? AND user_id userId : ; return SELECT goods_id, (COUNT(CASE WHEN source_type order THEN 1 END) * PURCHASE_WEIGHT COUNT(CASE WHEN source_type collect THEN 1 END) * COLLECT_WEIGHT COUNT(CASE WHEN source_type hits THEN 1 END) * CLICK_WEIGHT COUNT(CASE WHEN source_type comment THEN 1 END) * COMMENT_WEIGHT ) as hits_count FROM ( // 购买行为 SELECT goods_id, order as source_type FROM order WHERE 11 userCondition UNION ALL // 收藏行为 SELECT source_id as goods_id, collect as source_type FROM collect WHERE source_table goods userCondition UNION ALL // 点击行为 SELECT source_id as goods_id, hits as source_type FROM hits WHERE source_table goods userCondition UNION ALL // 评论行为 SELECT source_id as goods_id, comment as source_type FROM comment WHERE source_table goods userCondition ) t GROUP BY goods_id ORDER BY hits_count DESC; package com.project.demo.controller; import com.project.demo.entity.ReleasingNotices; import com.project.demo.service.ReleasingNoticesService; 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 java.io.UnsupportedEncodingException; import java.net.URLDecoder; import javax.servlet.http.HttpServletRequest; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.*; /** * 通知发布(ReleasingNotices)表控制层 * */ RestController RequestMapping(/releasing_notices) public class ReleasingNoticesController extends BaseControllerReleasingNotices, ReleasingNoticesService { /** * 通知发布对象 */ Autowired public ReleasingNoticesController(ReleasingNoticesService service) { setService(service); } PostMapping(/add) Transactional public MapString, Object add(HttpServletRequest request) throws IOException { MapString,Object paramMap service.readBody(request.getReader()); this.addMap(paramMap); 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ssm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。源码获取私信联系我即可~大家点赞、收藏、关注、评论啦精彩专栏 推荐订阅海量实战库源码任你选 坐拥Java项目2000套海量实战库源码任你选 坐拥Python项目1000套海量实战库源码任你选 坐拥小程序/app项目500套✅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❤️
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 推荐订阅海量实战库源码任你选 坐拥Java项目2000套海量实战库源码任你选 坐拥Python项目1000套海量实战库源码任你选 坐拥小程序/app项目500套✅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❤️系统实现普通用户功能实现用户注册模块普通用户在访问系统首页后可选择点击“注册”按钮进入相应的注册页面。在该页面中用户需完成所有注册信息必填项点击页面下方的“注册”按钮。系统在接收到表单数据并完成验证后若信息无误将提示注册成功以便用户立即进行登录操作。注册界面如下图所示。注册界面用户登录模块用户在登录界面点击“登录”按钮后需输入用户名、密码以及验证码以完成身份验证操作。系统在前端会自动对所输入信息进行有效性校验同时检查该用户是否已通过后台审核流程。若审核通过且信息无误则系统将允许用户成功登录并跳转至相应的功能界面反之页面会弹出相应的提示信息提醒用户重新输入或检查相关信息的正确性。登录界面如下图所示。登录界面前台首页模块首页作为用户进入平台的主入口集成导航栏、全局搜索框、轮播广告图及盲盒商品推荐区域布局清晰直观。用户可通过导航快速跳转至资讯、公告或商城等板块搜索功能支持按关键词检索商品与资讯吗通知中心实时推送系统消息在线沟通模块提供即时客服入口便于用户咨询问题或反馈需求。界面如下图所示。首页界面盲盒商品模块盲盒商品模块展示所有在售盲盒产品支持分类浏览与关键词搜索。每个商品详情页包含图片、价格、描述及操作按钮用户可执行立即购买、加入购物车、分享链接或收藏商品。已购买用户可在订单完成后对商品进行评论评论内容将同步至商品页面为其他用户提供参考形成闭环反馈机制。界面如下图所示。盲盒商品详情界面盲盒商品界面商城管理模块商城管理整合用户交易相关功能包括“我的地址”用于维护收货信息“我的订单”展示历史购买记录及当前状态“我的购物车”支持商品增删、数量调整及批量结算。三者协同支撑用户完成从选品到履约的全流程操作界面简洁操作路径明确。界面如下图所示。我的地址界面我的购物车界面我的订单界面留言反馈模块留言反馈模块允许普通用户向平台提交意见、建议或问题描述。用户填写反馈标题与内容后提交系统自动生成工单并关联用户账户。提交后可在个人中心查看反馈记录及管理员回复状态。该通道为平台优化服务提供直接依据同时增强用户参与感与信任度。界面如下图所示。留言反馈界面个人中心模块个人中心作为用户操作聚合页包含个人首页概览、留言反馈记录、配送列表、收藏记录含商品与资讯、点赞记录及评论管理可编辑或删除已发布评论。各子功能以卡片式布局呈现数据实时同步便于用户一站式管理其在平台上的全部互动与交易行为。界面如下图所示。个人中心界面管理员功能实现后台首页模块后台首页为管理员提供全局概览顶部设功能导航栏快速切换模块中部嵌入核心统计图表商品销售金额、销售数量数据按日/周/月动态更新。右侧集成个人信息修改、密码重置及通知中心便于管理员及时掌握运营状况并处理系统消息提升管理效率。界面如下图所示。后台首页界面公共管理模块公共管理负责维护平台前端展示的基础内容包括轮播图与公告信息。管理员可上传、编辑、排序轮播图素材对公告进行新增、修改、删除及详情查看。所有内容变更即时生效于用户端首页。界面如下图所示。轮播图管理界面商城管理模块商城管理聚焦盲盒商品与订单全流程管控。管理员可维护商品信息及分类列表在订单列表中查看所有用户订单执行“配送”操作标记发货并在用户确认收货后更新为“送达”针对售后申请如退换货可进行审核处理确保交易环节规范、透明、可追踪。界面如下图所示。盲盒商品管理界面留言管理模块留言管理模块集中处理用户提交的反馈内容。管理员可查询所有留言记录查看详情含用户信息与反馈内容对有效建议进行审核回复或删除无效/不当留言。回复内容将同步至用户个人中心形成双向沟通闭环提升用户满意度与平台服务质量。界面如下图所示。留言反馈审核界面用户管理模块用户管理模块支持对平台所有账户含管理员与普通用户进行全生命周期管控。管理员可查询用户列表、查看详情执行添加新管理员、删除违规账户或封禁用户等操作所有变更均需二次确认确保用户数据管理的规范性与安全性。界面如下图所示。用户管理界面资讯管理模块资讯管理涵盖资讯内容及其分类的维护管理员可创建、编辑或删除资讯文章与分类标签。每篇资讯支持富文本编辑、封面上传及状态设置如是否置顶。系统提供评论查看功能便于管理员审核用户留言并决定是否公开实现内容生产与互动监管的一体化管理。界面如下图所示。资讯信息管理界面数据库参考CREATE TABLE logistics_delivery ( logistics_delivery_id int(11) NOT NULL AUTO_INCREMENT COMMENT 物流配送ID, order_number varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 订单号, product_name varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 商品名称, purchase_quantity varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 购买数量, total_transaction_amount double(10,2) DEFAULT 0.00 COMMENT 交易总额, the_date_of_issuance date DEFAULT NULL COMMENT 发货日期, delivery_number varchar(30) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 配送订单, ordinary_users int(11) DEFAULT 0 COMMENT 普通用户, shipping_address varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 收货地址, delivery_status varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 配送状态, signing_status varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 签收状态, recommend int(11) NOT NULL DEFAULT 0 COMMENT 智能推荐, contact_name varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT 联系人名字, merchant_id int(11) DEFAULT NULL COMMENT 商家id, create_time datetime 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, courier_type int(11) NOT NULL DEFAULT 1 COMMENT 配送方式1商家配送2其他配送, courier_id int(11) DEFAULT NULL COMMENT 配送员ID, courier_name varchar(255) COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 配送员名字, courier_detail longtext COLLATE utf8mb4_general_ci COMMENT 配送详情, PRIMARY KEY (logistics_delivery_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT物流配送; DROP TABLE IF EXISTS goods; CREATE TABLE goods ( goods_id mediumint(8) unsigned NOT NULL AUTO_INCREMENT COMMENT 产品ID, title varchar(125) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 标题, img text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 封面图用于显示于产品列表页, description varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT 描述, price_ago double(8,2) unsigned NOT NULL DEFAULT 0.00 COMMENT 原价, price double(8,2) unsigned NOT NULL DEFAULT 0.00 COMMENT 卖价, sales int(10) unsigned NOT NULL DEFAULT 0 COMMENT 销量, inventory int(11) NOT NULL DEFAULT 0 COMMENT 商品库存, type varchar(64) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL DEFAULT COMMENT 商品分类, hits int(10) unsigned NOT NULL DEFAULT 0 COMMENT 点击量, content longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 正文, img_1 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图1, img_2 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图2, img_3 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图3, img_4 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图4, img_5 text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 主图5, 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, customize_field text CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci COMMENT 自定义字段, 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, user_id int(11) unsigned DEFAULT 0 COMMENT 添加人, integral int(11) DEFAULT 0 COMMENT 积分, list_status smallint(1) DEFAULT 1 COMMENT 上架状态0下架1上架, PRIMARY KEY (goods_id) USING BTREE ) ENGINEInnoDB DEFAULT CHARSETutf8mb4 COLLATEutf8mb4_general_ci COMMENT商品信息;代码参考package com.project.demo.controller; import com.project.demo.entity.BlindBoxMerchandise; import com.project.demo.service.BlindBoxMerchandiseService; 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 com.project.demo.entity.Goods; import com.project.demo.service.GoodsService; import java.util.stream.Collectors; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import javax.servlet.http.HttpServletRequest; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.*; /** * 盲盒商品(BlindBoxMerchandise)表控制层 * */ RestController RequestMapping(/blind_box_merchandise) public class BlindBoxMerchandiseController extends BaseControllerBlindBoxMerchandise, BlindBoxMerchandiseService { /** * 盲盒商品对象 */ Autowired public BlindBoxMerchandiseController(BlindBoxMerchandiseService service) { setService(service); } Autowired private GoodsService goodsService; 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(); }); BlindBoxMerchandise blind_box_merchandise new BlindBoxMerchandise(); blind_box_merchandise.setCommodity_source(paramMap.get(commodity_source)null?null:String.valueOf(paramMap.get(commodity_source))); blind_box_merchandise.setHits(paramMap.get(hits)null?null:Integer.valueOf(String.valueOf(paramMap.get(hits)))); blind_box_merchandise.setComment_len(paramMap.get(comment_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(comment_len)))); blind_box_merchandise.setCart_title(paramMap.get(cart_title)null?null:String.valueOf(paramMap.get(cart_title))); blind_box_merchandise.setCart_img(paramMap.get(cart_img)null?null:String.valueOf(paramMap.get(cart_img))); blind_box_merchandise.setCart_description(paramMap.get(cart_description)null?null:String.valueOf(paramMap.get(cart_description))); blind_box_merchandise.setCart_price_ago(paramMap.get(cart_price_ago)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_price_ago)))); blind_box_merchandise.setCart_price(paramMap.get(cart_price)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_price)))); blind_box_merchandise.setCart_inventory(paramMap.get(cart_inventory)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_inventory)))); blind_box_merchandise.setCart_type(paramMap.get(cart_type)null?null:String.valueOf(paramMap.get(cart_type))); blind_box_merchandise.setCart_content(paramMap.get(cart_content)null?null:String.valueOf(paramMap.get(cart_content))); blind_box_merchandise.setCart_img_1(paramMap.get(cart_img_1)null?null:String.valueOf(paramMap.get(cart_img_1))); blind_box_merchandise.setCart_img_2(paramMap.get(cart_img_2)null?null:String.valueOf(paramMap.get(cart_img_2))); blind_box_merchandise.setCart_img_3(paramMap.get(cart_img_3)null?null:String.valueOf(paramMap.get(cart_img_3))); blind_box_merchandise.setCart_img_4(paramMap.get(cart_img_4)null?null:String.valueOf(paramMap.get(cart_img_4))); blind_box_merchandise.setCart_img_5(paramMap.get(cart_img_5)null?null:String.valueOf(paramMap.get(cart_img_5))); blind_box_merchandise.setListStatus(paramMap.get(list_status)null?null:Integer.valueOf(String.valueOf(paramMap.get(list_status)))); blind_box_merchandise.setCreate_by(paramMap.get(create_by)null?null:Integer.valueOf(String.valueOf(paramMap.get(create_by)))); this.addEntity(blind_box_merchandise); System.out.println(盲盒商品新增成功); 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(); }); BlindBoxMerchandise blind_box_merchandise new BlindBoxMerchandise(); blind_box_merchandise.setCommodity_source(paramMap.get(commodity_source)null?null:String.valueOf(paramMap.get(commodity_source))); blind_box_merchandise.setHits(paramMap.get(hits)null?null:Integer.valueOf(String.valueOf(paramMap.get(hits)))); blind_box_merchandise.setComment_len(paramMap.get(comment_len)null?null:Integer.valueOf(String.valueOf(paramMap.get(comment_len)))); blind_box_merchandise.setCart_title(paramMap.get(cart_title)null?null:String.valueOf(paramMap.get(cart_title))); blind_box_merchandise.setCart_img(paramMap.get(cart_img)null?null:String.valueOf(paramMap.get(cart_img))); blind_box_merchandise.setCart_description(paramMap.get(cart_description)null?null:String.valueOf(paramMap.get(cart_description))); blind_box_merchandise.setCart_price_ago(paramMap.get(cart_price_ago)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_price_ago)))); blind_box_merchandise.setCart_price(paramMap.get(cart_price)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_price)))); blind_box_merchandise.setCart_inventory(paramMap.get(cart_inventory)null?null:Double.valueOf(String.valueOf(paramMap.get(cart_inventory)))); blind_box_merchandise.setCart_type(paramMap.get(cart_type)null?null:String.valueOf(paramMap.get(cart_type))); blind_box_merchandise.setCart_content(paramMap.get(cart_content)null?null:String.valueOf(paramMap.get(cart_content))); blind_box_merchandise.setCart_img_1(paramMap.get(cart_img_1)null?null:String.valueOf(paramMap.get(cart_img_1))); blind_box_merchandise.setCart_img_2(paramMap.get(cart_img_2)null?null:String.valueOf(paramMap.get(cart_img_2))); blind_box_merchandise.setCart_img_3(paramMap.get(cart_img_3)null?null:String.valueOf(paramMap.get(cart_img_3))); blind_box_merchandise.setCart_img_4(paramMap.get(cart_img_4)null?null:String.valueOf(paramMap.get(cart_img_4))); blind_box_merchandise.setCart_img_5(paramMap.get(cart_img_5)null?null:String.valueOf(paramMap.get(cart_img_5))); blind_box_merchandise.setListStatus(paramMap.get(list_status)null?null:Integer.valueOf(String.valueOf(paramMap.get(list_status)))); this.setEntity(queryMap,configMap,blind_box_merchandise); System.out.println(盲盒商品修改成功); return success(1); } private static final double PURCHASE_WEIGHT 5.0; // 购买权重 private static final double COLLECT_WEIGHT 3.0; // 收藏权重 private static final double CLICK_WEIGHT 1.0; // 点击权重 private static final double COMMENT_WEIGHT 2.0; // 评论权重 /** * 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()){ MapString,String configMap service.readConfig(request); configMap.computeIfAbsent(FindConfig.PAGE, k - String.valueOf(1)); configMap.computeIfAbsent(FindConfig.SIZE, k - String.valueOf(1)); configMap.put(FindConfig.ORDER_BY, goods_id asc); List goodsList goodsService.selectBaseList(goodsService.select(paramMap, configMap)); MapString, Object map new HashMap(); map.put(list, goodsList); map.put(count, goodsList.size()); return success(map); }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(); } //加权查询 String hitsSource buildCartWeightedSql(paramMap.get(user_id)); ListMapString,Object hitsSourceList goodsService.selectMapBaseList(hitsSource); if (hitsSourceList ! null hitsSourceList.size() 0) { System.out.println(前5条行为数据: ); for (int i 0; i Math.min(5, hitsSourceList.size()); i) { MapString, Object item hitsSourceList.get(i); System.out.println( 商品ID: item.get(goods_id) , 加权分数: item.get(hits_count)); } } //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 buildCartWeightedSql(null); hitsSourceList goodsService.selectMapBaseList(hitsSource); } String table_name goods; String table_id goods_id; String type_name type; //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 goodsService.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; 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(goods_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 goodsService.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 goodsService.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 goodsService.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 goodsService.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) { Goods leftMap (Goods) resultList.get(j); Goods rightMap (Goods) resultList.get(j 1); if (leftMap.getHits()rightMap.getHits()){ Goods 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 goodsService.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 goodsService.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; } /** * 构建加权行为SQL * param userId 用户IDnull表示全局 * return 加权SQL */ private String buildCartWeightedSql(String userId) { // 用户条件 String userCondition (userId ! null !userId.isEmpty()) ? AND user_id userId : ; return SELECT goods_id, (COUNT(CASE WHEN source_type order THEN 1 END) * PURCHASE_WEIGHT COUNT(CASE WHEN source_type collect THEN 1 END) * COLLECT_WEIGHT COUNT(CASE WHEN source_type hits THEN 1 END) * CLICK_WEIGHT COUNT(CASE WHEN source_type comment THEN 1 END) * COMMENT_WEIGHT ) as hits_count FROM ( // 购买行为 SELECT goods_id, order as source_type FROM order WHERE 11 userCondition UNION ALL // 收藏行为 SELECT source_id as goods_id, collect as source_type FROM collect WHERE source_table goods userCondition UNION ALL // 点击行为 SELECT source_id as goods_id, hits as source_type FROM hits WHERE source_table goods userCondition UNION ALL // 评论行为 SELECT source_id as goods_id, comment as source_type FROM comment WHERE source_table goods userCondition ) t GROUP BY goods_id ORDER BY hits_count DESC; package com.project.demo.controller; import com.project.demo.entity.ReleasingNotices; import com.project.demo.service.ReleasingNoticesService; 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 java.io.UnsupportedEncodingException; import java.net.URLDecoder; import javax.servlet.http.HttpServletRequest; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.*; /** * 通知发布(ReleasingNotices)表控制层 * */ RestController RequestMapping(/releasing_notices) public class ReleasingNoticesController extends BaseControllerReleasingNotices, ReleasingNoticesService { /** * 通知发布对象 */ Autowired public ReleasingNoticesController(ReleasingNoticesService service) { setService(service); } PostMapping(/add) Transactional public MapString, Object add(HttpServletRequest request) throws IOException { MapString,Object paramMap service.readBody(request.getReader()); this.addMap(paramMap); 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ssm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。源码获取私信联系我即可~大家点赞、收藏、关注、评论啦精彩专栏 推荐订阅海量实战库源码任你选 坐拥Java项目2000套海量实战库源码任你选 坐拥Python项目1000套海量实战库源码任你选 坐拥小程序/app项目500套✅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❤️
