Inbox Message & bugs

src/main/java/com/yaoyuan/jiscuss/JiccussApplication.java

@@ -3,9 +3,11 @@ package com.yaoyuan.jiscuss;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.scheduling.annotation.EnableAsync;
 
 @SpringBootApplication
 @EnableCaching
+@EnableAsync
 public class JiccussApplication {
 
     public static void main(String[] args) {

src/main/java/com/yaoyuan/jiscuss/controller/UserMsgController.java

@@ -1,15 +1,115 @@
 package com.yaoyuan.jiscuss.controller;
 
+import com.yaoyuan.jiscuss.dto.InboxItem;
+import com.yaoyuan.jiscuss.entity.Message;
+import com.yaoyuan.jiscuss.entity.Notification;
+import com.yaoyuan.jiscuss.entity.User;
+import com.yaoyuan.jiscuss.entity.UserInfo;
+import com.yaoyuan.jiscuss.service.IMessageService;
+import com.yaoyuan.jiscuss.service.INotificationService;
+import com.yaoyuan.jiscuss.service.IUsersService;
+import jakarta.servlet.http.HttpServletRequest;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
 import org.springframework.stereotype.Controller;
+import org.springframework.ui.ModelMap;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * @author Chuyaoyuan
- * 用户消息控制器
+ * 站内私信与通知控制器
  */
 @Controller
 public class UserMsgController extends BaseController {
 
-    /**
+    @Autowired
-     * 首页最新消息
+    private IMessageService messageService;
-     */
+
+    @Autowired
+    private INotificationService notificationService;
+
+    @Autowired
+    private IUsersService usersService;
+
+    /** 收件箱：对话列表 */
+    @GetMapping("/messages")
+    public String inbox(HttpServletRequest request, ModelMap map) {
+        UserInfo user = getUserInfo(request);
+        if (user == null) return "redirect:/login";
+
+        List<Message> inboxList = messageService.getInbox(user.getId());
+
+        List<InboxItem> items = new ArrayList<>();
+        for (Message msg : inboxList) {
+            Integer otherId = msg.getSenderId().equals(user.getId()) ? msg.getReceiverId() : msg.getSenderId();
+            User other = usersService.findOne(otherId);
+            String rawName = (other != null) ? other.getUsername() : null;
+            String otherName = (rawName != null && !rawName.isBlank()) ? rawName : "用户" + otherId;
+            boolean hasUnread = !Boolean.TRUE.equals(msg.getIsRead()) && msg.getReceiverId().equals(user.getId());
+            items.add(new InboxItem(otherId, otherName, msg.getContent(), msg.getCreateTime(), hasUnread));
+        }
+
+        map.put("username", user.getUsername());
+        map.put("currentUserId", user.getId());
+        map.put("inboxItems", items);
+        map.put("unreadMsgCount", messageService.countUnread(user.getId()));
+        map.put("unreadNotifCount", notificationService.countUnread(user.getId()));
+        return "messages";
+    }
+
+    /** 对话详情页 */
+    @GetMapping("/messages/{otherId}")
+    public String conversation(@PathVariable Integer otherId, HttpServletRequest request, ModelMap map) {
+        UserInfo user = getUserInfo(request);
+        if (user == null) return "redirect:/login";
+
+        messageService.markConversationRead(user.getId(), otherId);
+
+        List<Message> messages = messageService.getConversation(user.getId(), otherId);
+        User other = usersService.findOne(otherId);
+
+        map.put("username", user.getUsername());
+        map.put("currentUserId", user.getId());
+        map.put("otherId", otherId);
+        map.put("otherUsername", other != null ? other.getUsername() : "用户" + otherId);
+        map.put("messages", messages);
+        map.put("unreadMsgCount", messageService.countUnread(user.getId()));
+        map.put("unreadNotifCount", notificationService.countUnread(user.getId()));
+        return "conversation";
+    }
+
+    /** 通知列表页 */
+    @GetMapping("/notifications")
+    public String notifications(@RequestParam(defaultValue = "0") int page,
+                                HttpServletRequest request, ModelMap map) {
+        UserInfo user = getUserInfo(request);
+        if (user == null) return "redirect:/login";
+
+        notificationService.markAllRead(user.getId());
+        Page<Notification> notifs = notificationService.listByUser(user.getId(), page, 20);
+
+        List<String> fromUsernames = new ArrayList<>();
+        for (Notification n : notifs.getContent()) {
+            if (n.getFromUserId() != null) {
+                User from = usersService.findOne(n.getFromUserId());
+                fromUsernames.add(from != null ? from.getUsername() : "用户" + n.getFromUserId());
+            } else {
+                fromUsernames.add("系统");
+            }
+        }
+
+        map.put("username", user.getUsername());
+        map.put("notifications", notifs.getContent());
+        map.put("fromUsernames", fromUsernames);
+        map.put("totalPages", notifs.getTotalPages());
+        map.put("currentPage", page);
+        map.put("unreadMsgCount", messageService.countUnread(user.getId()));
+        map.put("unreadNotifCount", 0L);
+        return "notifications";
+    }
 }

src/main/java/com/yaoyuan/jiscuss/controller/UserPageController.java

@@ -1,68 +1,105 @@
 package com.yaoyuan.jiscuss.controller;
 
+import com.yaoyuan.jiscuss.entity.Discussion;
+import com.yaoyuan.jiscuss.entity.Post;
+import com.yaoyuan.jiscuss.entity.User;
 import com.yaoyuan.jiscuss.entity.UserInfo;
-import com.yaoyuan.jiscuss.service.IDiscussionsService;
+import com.yaoyuan.jiscuss.repository.DiscussionsRepository;
-import com.yaoyuan.jiscuss.service.ITagsService;
+import com.yaoyuan.jiscuss.repository.LikeCollectRepository;
+import com.yaoyuan.jiscuss.repository.PostsRepository;
+import com.yaoyuan.jiscuss.service.IMessageService;
+import com.yaoyuan.jiscuss.service.INotificationService;
 import com.yaoyuan.jiscuss.service.IUsersService;
+import jakarta.servlet.http.HttpServletRequest;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.ModelMap;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 
-import jakarta.servlet.http.HttpServletRequest;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * @author Chuyaoyuan
- * @Title:
- * @Package com.yaoyuan.jiscuss.controller
- * @Description:
- * @date
  */
 @Controller
 public class UserPageController extends BaseController {
 
-    private static Logger logger = LoggerFactory.getLogger(UserPageController.class);
+    private static final Logger logger = LoggerFactory.getLogger(UserPageController.class);
 
     @Autowired
     private IUsersService usersService;
 
     @Autowired
-    private IDiscussionsService discussionsService;
+    private DiscussionsRepository discussionsRepository;
 
     @Autowired
-    private ITagsService tagsService;
+    private PostsRepository postsRepository;
+
+    @Autowired
+    private LikeCollectRepository likeCollectRepository;
+
+    @Autowired
+    private IMessageService messageService;
+
+    @Autowired
+    private INotificationService notificationService;
 
     /**
-     * 用户页面
+     * 用户个人主页
-     *
-     * @return
      */
     @RequestMapping("/user")
-    public String user(@RequestParam(defaultValue = "discussion") String type, HttpServletRequest request, ModelMap map) {
+    public String user(@RequestParam(defaultValue = "discussion") String type,
+                       HttpServletRequest request, ModelMap map) {
 
-        // type 判断
+        UserInfo currentUser = getUserInfo(request);
-        if (type.equals("discussion")) {
+        if (currentUser == null) return "redirect:/login";
-            map.put("discussion", "active");
+
+        User userEntity = usersService.findOne(currentUser.getId());
+        long liveDiscCount = discussionsRepository.countByStartUserId(currentUser.getId());
+        long liveReplyCount = postsRepository.countByCreateId(currentUser.getId());
+        map.put("username", currentUser.getUsername());
+        map.put("userEntity", userEntity);
+        map.put("liveDiscCount", liveDiscCount);
+        map.put("liveReplyCount", liveReplyCount);
+        map.put("type", type);
+        map.put("unreadMsgCount", messageService.countUnread(currentUser.getId()));
+        map.put("unreadNotifCount", notificationService.countUnread(currentUser.getId()));
+
+        if ("discussion".equals(type)) {
+            Page<Discussion> discussions = discussionsRepository.findByStartUserIdOrderByStartTimeDesc(
+                    currentUser.getId(), PageRequest.of(0, 20));
+            map.put("discussions", discussions.getContent());
+        } else if ("reply".equals(type)) {
+            Page<Post> posts = postsRepository.findByCreateIdOrderByCreateTimeDesc(
+                    currentUser.getId(), PageRequest.of(0, 20));
+            map.put("posts", posts.getContent());
+            // Attach discussion titles
+            List<String> discTitles = new ArrayList<>();
+            for (Post p : posts.getContent()) {
+                if (p.getDiscussionId() != null) {
+                    Discussion d = discussionsRepository.findById(p.getDiscussionId()).orElse(null);
+                    discTitles.add(d != null ? d.getTitle() : "");
+                } else {
+                    discTitles.add("");
                 }
-        
-        if (type.equals("change")) {
-            map.put("change", "active");
             }
-        
+            map.put("discTitles", discTitles);
-        if (type.equals("like")) {
+        } else if ("like".equals(type)) {
-            map.put("like", "active");
+            List<Integer> likedIds = likeCollectRepository.findLikedDiscussionIdsByUser(currentUser.getId());
+            List<Discussion> liked = new ArrayList<>();
+            for (Integer id : likedIds) {
+                Discussion d = discussionsRepository.findById(id).orElse(null);
+                if (d != null) liked.add(d);
             }
-        
+            map.put("likedDiscussions", liked);
-        UserInfo user = getUserInfo(request);
-        if (user != null) {
-            map.put("username", user.getUsername());
-            map.put("data", "Jiscuss 用户:" + user.getUsername());
         }
 
-        
         return "user";
     }
 }

src/main/java/com/yaoyuan/jiscuss/controller/UserPostController.java

@@ -62,6 +62,9 @@ public class UserPostController extends BaseController {
     @Autowired
     private IpRegionService ipRegionService;
 
+    @Autowired
+    private com.yaoyuan.jiscuss.service.INotificationService notificationService;
+
 
     /**
      * 首页查看主题列表（各种条件筛选，最热最新标签等）
@@ -205,6 +208,14 @@ public class UserPostController extends BaseController {
         }
 
         Post savePost = postsService.insert(post);
+        // Notify the discussion starter about a reply (async, ignores self-reply)
+        if (post.getDiscussionId() != null && user != null) {
+            Discussion disc = discussionsService.findOne(post.getDiscussionId());
+            if (disc != null && disc.getStartUserId() != null) {
+                notificationService.notifyReply(disc.getStartUserId(), user.getId(),
+                        disc.getId(), disc.getTitle());
+            }
+        }
         Map<String, Object> resultobj = new HashMap<>();
         logger.info(">>>{}", savePost);
         resultobj.put("msg", "添加评论成功");

src/main/java/com/yaoyuan/jiscuss/controller/api/RestMsgController.java

@@ -0,0 +1,129 @@
+package com.yaoyuan.jiscuss.controller.api;
+
+import com.yaoyuan.jiscuss.controller.BaseController;
+import com.yaoyuan.jiscuss.entity.Message;
+import com.yaoyuan.jiscuss.entity.Notification;
+import com.yaoyuan.jiscuss.entity.User;
+import com.yaoyuan.jiscuss.entity.UserInfo;
+import com.yaoyuan.jiscuss.response.ApiResponse;
+import com.yaoyuan.jiscuss.service.IMessageService;
+import com.yaoyuan.jiscuss.service.INotificationService;
+import com.yaoyuan.jiscuss.service.IUsersService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.servlet.http.HttpServletRequest;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * REST API for private messages and notifications.
+ */
+@Tag(name = "Message API", description = "Private messages and notifications")
+@RestController
+@RequestMapping("/msg_api")
+public class RestMsgController extends BaseController {
+
+    @Autowired
+    private IMessageService messageService;
+
+    @Autowired
+    private INotificationService notificationService;
+
+    @Autowired
+    private IUsersService usersService;
+
+    // ─── Debug (TEMP) ─────────────────────────────────────────────────────
+
+    /** Temp debug: returns raw message counts and inbox list for current user. */
+    @GetMapping("/debug/inbox")
+    public ApiResponse<Map<String, Object>> debugInbox(HttpServletRequest request) {
+        UserInfo user = getUserInfo(request);
+        if (user == null) return ApiResponse.fail(401, "请先登录");
+        long unread = messageService.countUnread(user.getId());
+        List<Message> inbox = messageService.getInbox(user.getId());
+        return ApiResponse.ok(Map.of(
+                "userId", user.getId(),
+                "username", user.getUsername(),
+                "unreadCount", unread,
+                "inboxSize", inbox.size(),
+                "inbox", inbox
+        ));
+    }
+
+    // ─── User card (public — accessible to any authenticated user) ────────
+
+    /** Returns basic user info for the hover card (discussionsCount, commentsCount). */
+    @Operation(summary = "Get user card info")
+    @GetMapping("/user-card/{id}")
+    public ApiResponse<Map<String, Object>> getUserCard(@PathVariable Integer id, HttpServletRequest request) {
+        UserInfo currentUser = getUserInfo(request);
+        if (currentUser == null) return ApiResponse.fail(401, "请先登录");
+        User user = usersService.findOne(id);
+        if (user == null) return ApiResponse.fail(404, "用户不存在");
+        return ApiResponse.ok(Map.of(
+                "id", user.getId(),
+                "username", user.getUsername() != null ? user.getUsername() : "",
+                "discussionsCount", user.getDiscussionsCount() != null ? user.getDiscussionsCount() : 0,
+                "commentsCount", user.getCommentsCount() != null ? user.getCommentsCount() : 0
+        ));
+    }
+
+    // ─── Notifications ────────────────────────────────────────────────────
+
+    @Operation(summary = "Get unread notification + message counts")
+    @GetMapping("/unread-counts")
+    public ApiResponse<Map<String, Long>> unreadCounts(HttpServletRequest request) {
+        UserInfo user = getUserInfo(request);
+        if (user == null) return ApiResponse.ok(Map.of("notifications", 0L, "messages", 0L));
+        return ApiResponse.ok(Map.of(
+                "notifications", notificationService.countUnread(user.getId()),
+                "messages", messageService.countUnread(user.getId())
+        ));
+    }
+
+    @Operation(summary = "Mark a notification as read")
+    @PostMapping("/notifications/{id}/read")
+    public ApiResponse<Void> markNotifRead(@PathVariable Integer id, HttpServletRequest request) {
+        UserInfo user = getUserInfo(request);
+        if (user == null) return ApiResponse.fail(401, "请先登录");
+        notificationService.markOneRead(id, user.getId());
+        return ApiResponse.ok(null);
+    }
+
+    @Operation(summary = "Mark all notifications as read")
+    @PostMapping("/notifications/read-all")
+    public ApiResponse<Void> markAllNotifRead(HttpServletRequest request) {
+        UserInfo user = getUserInfo(request);
+        if (user == null) return ApiResponse.fail(401, "请先登录");
+        notificationService.markAllRead(user.getId());
+        return ApiResponse.ok(null);
+    }
+
+    // ─── Messages ─────────────────────────────────────────────────────────
+
+    @Operation(summary = "Send a private message")
+    @PostMapping("/messages/send")
+    public ApiResponse<Message> sendMessage(
+            @RequestParam Integer receiverId,
+            @RequestParam String content,
+            HttpServletRequest request) {
+        UserInfo user = getUserInfo(request);
+        if (user == null) return ApiResponse.fail(401, "请先登录");
+        if (user.getId().equals(receiverId)) return ApiResponse.fail(400, "不能给自己发消息");
+        if (content == null || content.isBlank()) return ApiResponse.fail(400, "消息内容不能为空");
+        Message msg = messageService.send(user.getId(), receiverId, content.trim());
+        return ApiResponse.ok(msg);
+    }
+
+    @Operation(summary = "Get conversation with another user")
+    @GetMapping("/messages/conversation/{otherId}")
+    public ApiResponse<List<Message>> getConversation(@PathVariable Integer otherId, HttpServletRequest request) {
+        UserInfo user = getUserInfo(request);
+        if (user == null) return ApiResponse.fail(401, "请先登录");
+        messageService.markConversationRead(user.getId(), otherId);
+        return ApiResponse.ok(messageService.getConversation(user.getId(), otherId));
+    }
+}

src/main/java/com/yaoyuan/jiscuss/dto/InboxItem.java

@@ -0,0 +1,23 @@
+package com.yaoyuan.jiscuss.dto;
+
+import lombok.Data;
+
+import java.util.Date;
+
+/** View model for one inbox entry (latest message in a conversation). */
+@Data
+public class InboxItem {
+    private final Integer otherId;
+    private final String otherUsername;
+    private final String lastContent;
+    private final Date lastTime;
+    private final boolean hasUnread;
+
+    public InboxItem(Integer otherId, String otherUsername, String lastContent, Date lastTime, boolean hasUnread) {
+        this.otherId = otherId;
+        this.otherUsername = otherUsername;
+        this.lastContent = lastContent;
+        this.lastTime = lastTime;
+        this.hasUnread = hasUnread;
+    }
+}

src/main/java/com/yaoyuan/jiscuss/entity/Discussion.java

@@ -82,6 +82,6 @@ public class Discussion implements Serializable {
     private Date createTime;
 
     @Column(name = "view_count")
-    private Integer viewCount = 0;
+    private Integer viewCount;
 }
 

src/main/java/com/yaoyuan/jiscuss/entity/Message.java

@@ -0,0 +1,40 @@
+package com.yaoyuan.jiscuss.entity;
+
+import jakarta.persistence.*;
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.Date;
+
+@Data
+@Entity
+@Table(name = "message")
+public class Message implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+
+    @Column(name = "sender_id", nullable = false)
+    private Integer senderId;
+
+    @Column(name = "receiver_id", nullable = false)
+    private Integer receiverId;
+
+    @Column(name = "content", columnDefinition = "TEXT", nullable = false)
+    private String content;
+
+    @Column(name = "is_read")
+    private Boolean isRead = false;
+
+    @Column(name = "create_time")
+    private Date createTime;
+
+    /**
+     * Conversation identifier = "min(a,b)_max(a,b)", groups all messages
+     * between two users into a single conversation thread.
+     */
+    @Column(name = "conversation_id", nullable = false)
+    private String conversationId;
+}

src/main/java/com/yaoyuan/jiscuss/entity/Notification.java

@@ -0,0 +1,50 @@
+package com.yaoyuan.jiscuss.entity;
+
+import jakarta.persistence.*;
+import lombok.Data;
+
+import java.io.Serializable;
+import java.util.Date;
+
+@Data
+@Entity
+@Table(name = "notification")
+public class Notification implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Integer id;
+
+    /** Receiver user ID. */
+    @Column(name = "user_id", nullable = false)
+    private Integer userId;
+
+    /** Sender user ID (null for system notifications). */
+    @Column(name = "from_user_id")
+    private Integer fromUserId;
+
+    /** Notification type: reply / like / system. */
+    @Column(name = "type", nullable = false)
+    private String type;
+
+    @Column(name = "title")
+    private String title;
+
+    @Column(name = "content", columnDefinition = "TEXT")
+    private String content;
+
+    /** Related entity ID (e.g., discussion or post id). */
+    @Column(name = "related_id")
+    private Integer relatedId;
+
+    /** Type of related entity: discussion / post. */
+    @Column(name = "related_type")
+    private String relatedType;
+
+    @Column(name = "is_read")
+    private Boolean isRead = false;
+
+    @Column(name = "create_time")
+    private Date createTime;
+}

src/main/java/com/yaoyuan/jiscuss/repository/DiscussionsRepository.java

@@ -42,4 +42,11 @@ public interface DiscussionsRepository extends JpaRepository<Discussion, Integer
     @Query("UPDATE Discussion d SET d.dislikeCount = COALESCE(d.dislikeCount, 0) + :delta WHERE d.id = :id")
     void adjustDislikeCount(@org.springframework.data.repository.query.Param("id") Integer id,
                             @org.springframework.data.repository.query.Param("delta") int delta);
+
+    /** Discussions started by a given user, most recent first. */
+    @Query("SELECT d FROM Discussion d WHERE d.startUserId = :userId ORDER BY d.startTime DESC")
+    org.springframework.data.domain.Page<Discussion> findByStartUserIdOrderByStartTimeDesc(
+            @org.springframework.data.repository.query.Param("userId") Integer userId,
+            org.springframework.data.domain.Pageable pageable);
+    long countByStartUserId(Integer startUserId);
 }

src/main/java/com/yaoyuan/jiscuss/repository/LikeCollectRepository.java

@@ -18,4 +18,8 @@ public interface LikeCollectRepository extends JpaRepository<LikeCollect, Intege
     /** Find an existing vote record for a user on a post. */
     @Query("FROM LikeCollect lc WHERE lc.userId = :userId AND lc.postId = :postId AND lc.type = 'post'")
     Optional<LikeCollect> findPostVote(@Param("userId") Integer userId, @Param("postId") Integer postId);
+
+    /** Discussions liked by a user (action = 'like'). */
+    @Query("SELECT lc.discussionId FROM LikeCollect lc WHERE lc.userId = :userId AND lc.type = 'discussion' AND lc.action = 'like'")
+    java.util.List<Integer> findLikedDiscussionIdsByUser(@Param("userId") Integer userId);
 }

src/main/java/com/yaoyuan/jiscuss/repository/MessageRepository.java

@@ -0,0 +1,31 @@
+package com.yaoyuan.jiscuss.repository;
+
+import com.yaoyuan.jiscuss.entity.Message;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Repository
+public interface MessageRepository extends JpaRepository<Message, Integer> {
+
+    /** Latest messages in a conversation, most recent first. */
+    List<Message> findByConversationIdOrderByCreateTimeDesc(String conversationId);
+
+    /** All messages sent by user. */
+    List<Message> findBySenderIdOrderByCreateTimeDesc(Integer senderId);
+
+    /** All messages received by user. */
+    List<Message> findByReceiverIdOrderByCreateTimeDesc(Integer receiverId);
+
+    long countByReceiverIdAndIsReadFalse(Integer receiverId);
+
+    @Modifying
+    @Transactional
+    @Query("UPDATE Message m SET m.isRead = true WHERE m.conversationId = :convId AND m.receiverId = :userId")
+    void markConversationReadForUser(@Param("convId") String convId, @Param("userId") Integer userId);
+}

src/main/java/com/yaoyuan/jiscuss/repository/NotificationRepository.java

@@ -0,0 +1,29 @@
+package com.yaoyuan.jiscuss.repository;
+
+import com.yaoyuan.jiscuss.entity.Notification;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+@Repository
+public interface NotificationRepository extends JpaRepository<Notification, Integer> {
+
+    Page<Notification> findByUserIdOrderByCreateTimeDesc(Integer userId, Pageable pageable);
+
+    long countByUserIdAndIsReadFalse(Integer userId);
+
+    @Modifying
+    @Transactional
+    @Query("UPDATE Notification n SET n.isRead = true WHERE n.userId = :userId")
+    void markAllReadByUserId(@Param("userId") Integer userId);
+
+    @Modifying
+    @Transactional
+    @Query("UPDATE Notification n SET n.isRead = true WHERE n.id = :id AND n.userId = :userId")
+    void markReadById(@Param("id") Integer id, @Param("userId") Integer userId);
+}

src/main/java/com/yaoyuan/jiscuss/repository/PostsRepository.java

@@ -89,4 +89,11 @@ public interface PostsRepository extends JpaRepository<Post, Integer> {
 //
 //    @Query("from Post where parentId is not null and discussionId = :dId")
 //    List<Post> findAllByDIdAndparentIdNotNull(@Param("dId")Integer dId);
+
+    /** Posts (replies) created by a given user, most recent first. */
+    @Query("SELECT p FROM Post p WHERE p.createId = :userId ORDER BY p.createTime DESC")
+    org.springframework.data.domain.Page<Post> findByCreateIdOrderByCreateTimeDesc(
+            @Param("userId") Integer userId, org.springframework.data.domain.Pageable pageable);
+
+    long countByCreateId(Integer createId);
 }

src/main/java/com/yaoyuan/jiscuss/service/IMessageService.java

@@ -0,0 +1,23 @@
+package com.yaoyuan.jiscuss.service;
+
+import com.yaoyuan.jiscuss.entity.Message;
+
+import java.util.List;
+
+public interface IMessageService {
+
+    /** Send a message from sender to receiver. */
+    Message send(Integer senderId, Integer receiverId, String content);
+
+    /** All messages in a conversation (ordered oldest→newest). */
+    List<Message> getConversation(Integer userId, Integer otherId);
+
+    /** Inbox: latest message per conversation, sorted by latest activity (max 50). */
+    List<Message> getInbox(Integer userId);
+
+    /** Unread message count for a user. */
+    long countUnread(Integer userId);
+
+    /** Mark an entire conversation as read for the current user. */
+    void markConversationRead(Integer userId, Integer otherId);
+}

src/main/java/com/yaoyuan/jiscuss/service/INotificationService.java

@@ -0,0 +1,27 @@
+package com.yaoyuan.jiscuss.service;
+
+import com.yaoyuan.jiscuss.entity.Notification;
+import org.springframework.data.domain.Page;
+
+public interface INotificationService {
+
+    /** Create a notification for a user. */
+    Notification create(Integer toUserId, Integer fromUserId, String type, String title, String content,
+                        Integer relatedId, String relatedType);
+
+    /** Convenience: create a "reply" notification. */
+    void notifyReply(Integer toUserId, Integer fromUserId, Integer discussionId, String discussionTitle);
+
+    /** Convenience: create a "like" notification for a post. */
+    void notifyLike(Integer toUserId, Integer fromUserId, Integer postId, Integer discussionId);
+
+    /** Unread notification count for a user. */
+    long countUnread(Integer userId);
+
+    /** Paged notification list for a user. */
+    Page<Notification> listByUser(Integer userId, int page, int size);
+
+    void markAllRead(Integer userId);
+
+    void markOneRead(Integer notificationId, Integer userId);
+}

src/main/java/com/yaoyuan/jiscuss/service/impl/LikeCollectServiceImpl.java

@@ -1,10 +1,12 @@
 package com.yaoyuan.jiscuss.service.impl;
 
 import com.yaoyuan.jiscuss.entity.LikeCollect;
+import com.yaoyuan.jiscuss.entity.Post;
 import com.yaoyuan.jiscuss.repository.DiscussionsRepository;
 import com.yaoyuan.jiscuss.repository.LikeCollectRepository;
 import com.yaoyuan.jiscuss.repository.PostsRepository;
 import com.yaoyuan.jiscuss.service.ILikeCollectService;
+import com.yaoyuan.jiscuss.service.INotificationService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -24,6 +26,9 @@ public class LikeCollectServiceImpl implements ILikeCollectService {
     @Autowired
     private PostsRepository postsRepository;
 
+    @Autowired
+    private INotificationService notificationService;
+
     @Transactional
     @Override
     public String voteDiscussion(Integer userId, Integer discussionId, String action) {
@@ -85,6 +90,13 @@ public class LikeCollectServiceImpl implements ILikeCollectService {
             vote.setCreateTime(new Date());
             likeCollectRepository.save(vote);
             adjustPost(postId, action, +1);
+            // Notify post author when liked (not disliked)
+            if ("like".equals(action)) {
+                Post post = postsRepository.findById(postId).orElse(null);
+                if (post != null && post.getCreateId() != null) {
+                    notificationService.notifyLike(post.getCreateId(), userId, postId, post.getDiscussionId());
+                }
+            }
             return action;
         }
     }

src/main/java/com/yaoyuan/jiscuss/service/impl/MessageServiceImpl.java

@@ -0,0 +1,85 @@
+package com.yaoyuan.jiscuss.service.impl;
+
+import com.yaoyuan.jiscuss.entity.Message;
+import com.yaoyuan.jiscuss.repository.MessageRepository;
+import com.yaoyuan.jiscuss.service.IMessageService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Date;
+import java.util.List;
+
+@Service
+public class MessageServiceImpl implements IMessageService {
+
+    @Autowired
+    private MessageRepository messageRepository;
+
+    private String buildConversationId(Integer a, Integer b) {
+        return Math.min(a, b) + "_" + Math.max(a, b);
+    }
+
+    @Transactional
+    @Override
+    public Message send(Integer senderId, Integer receiverId, String content) {
+        Message msg = new Message();
+        msg.setSenderId(senderId);
+        msg.setReceiverId(receiverId);
+        msg.setContent(content);
+        msg.setIsRead(false);
+        msg.setCreateTime(new Date());
+        msg.setConversationId(buildConversationId(senderId, receiverId));
+        return messageRepository.save(msg);
+    }
+
+    @Transactional(readOnly = true)
+    @Override
+    public List<Message> getConversation(Integer userId, Integer otherId) {
+        String convId = buildConversationId(userId, otherId);
+        List<Message> msgs = messageRepository.findByConversationIdOrderByCreateTimeDesc(convId);
+        // reverse to get oldest-first order
+        java.util.Collections.reverse(msgs);
+        return msgs;
+    }
+
+    @Transactional(readOnly = true)
+    @Override
+    public List<Message> getInbox(Integer userId) {
+        // Fetch sent and received separately, merge, then deduplicate by conversationId
+        List<Message> sent = messageRepository.findBySenderIdOrderByCreateTimeDesc(userId);
+        List<Message> received = messageRepository.findByReceiverIdOrderByCreateTimeDesc(userId);
+
+        // Merge both lists, sort by createTime descending
+        java.util.List<Message> all = new java.util.ArrayList<>();
+        all.addAll(sent);
+        all.addAll(received);
+        all.sort((a, b) -> {
+            if (a.getCreateTime() == null) return 1;
+            if (b.getCreateTime() == null) return -1;
+            return b.getCreateTime().compareTo(a.getCreateTime());
+        });
+
+        // Keep only the latest message per conversation
+        java.util.LinkedHashMap<String, Message> seen = new java.util.LinkedHashMap<>();
+        for (Message m : all) {
+            String cid = (m.getConversationId() != null && !m.getConversationId().isEmpty())
+                    ? m.getConversationId()
+                    : Math.min(m.getSenderId(), m.getReceiverId()) + "_" + Math.max(m.getSenderId(), m.getReceiverId());
+            seen.putIfAbsent(cid, m);
+        }
+        return new java.util.ArrayList<>(seen.values());
+    }
+
+    @Transactional(readOnly = true)
+    @Override
+    public long countUnread(Integer userId) {
+        return messageRepository.countByReceiverIdAndIsReadFalse(userId);
+    }
+
+    @Transactional
+    @Override
+    public void markConversationRead(Integer userId, Integer otherId) {
+        messageRepository.markConversationReadForUser(buildConversationId(userId, otherId), userId);
+    }
+}

src/main/java/com/yaoyuan/jiscuss/service/impl/NotificationServiceImpl.java

@@ -0,0 +1,83 @@
+package com.yaoyuan.jiscuss.service.impl;
+
+import com.yaoyuan.jiscuss.entity.Notification;
+import com.yaoyuan.jiscuss.repository.NotificationRepository;
+import com.yaoyuan.jiscuss.service.INotificationService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Date;
+
+@Service
+public class NotificationServiceImpl implements INotificationService {
+
+    @Autowired
+    private NotificationRepository notificationRepository;
+
+    @Transactional
+    @Override
+    public Notification create(Integer toUserId, Integer fromUserId, String type, String title,
+                                String content, Integer relatedId, String relatedType) {
+        // Do not notify yourself
+        if (toUserId != null && toUserId.equals(fromUserId)) {
+            return null;
+        }
+        Notification n = new Notification();
+        n.setUserId(toUserId);
+        n.setFromUserId(fromUserId);
+        n.setType(type);
+        n.setTitle(title);
+        n.setContent(content);
+        n.setRelatedId(relatedId);
+        n.setRelatedType(relatedType);
+        n.setIsRead(false);
+        n.setCreateTime(new Date());
+        return notificationRepository.save(n);
+    }
+
+    @Async
+    @Override
+    public void notifyReply(Integer toUserId, Integer fromUserId, Integer discussionId, String discussionTitle) {
+        create(toUserId, fromUserId, "reply",
+                "有人回复了你的帖子",
+                "在话题《" + discussionTitle + "》中回复了你",
+                discussionId, "discussion");
+    }
+
+    @Async
+    @Override
+    public void notifyLike(Integer toUserId, Integer fromUserId, Integer postId, Integer discussionId) {
+        create(toUserId, fromUserId, "like",
+                "有人赞了你的回复",
+                null, postId, "post");
+    }
+
+    @Transactional(readOnly = true)
+    @Override
+    public long countUnread(Integer userId) {
+        return notificationRepository.countByUserIdAndIsReadFalse(userId);
+    }
+
+    @Transactional(readOnly = true)
+    @Override
+    public Page<Notification> listByUser(Integer userId, int page, int size) {
+        return notificationRepository.findByUserIdOrderByCreateTimeDesc(
+                userId, PageRequest.of(page, size));
+    }
+
+    @Transactional
+    @Override
+    public void markAllRead(Integer userId) {
+        notificationRepository.markAllReadByUserId(userId);
+    }
+
+    @Transactional
+    @Override
+    public void markOneRead(Integer notificationId, Integer userId) {
+        notificationRepository.markReadById(notificationId, userId);
+    }
+}

src/main/resources/db/migration/V9__notification_message.sql

@@ -0,0 +1,33 @@
+-- V9: Add notification and private message support
+
+-- Notification table: system/reply/like alerts to a user
+CREATE TABLE IF NOT EXISTS notification (
+    id          INT PRIMARY KEY AUTO_INCREMENT,
+    user_id     INT NOT NULL,           -- receiver
+    from_user_id INT,                   -- sender (NULL for system notifications)
+    type        VARCHAR(50) NOT NULL,   -- 'reply', 'like', 'system'
+    title       VARCHAR(200),
+    content     TEXT,
+    related_id  INT,                    -- e.g. discussion_id or post_id
+    related_type VARCHAR(50),           -- 'discussion', 'post'
+    is_read     BOOLEAN DEFAULT FALSE,
+    create_time DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_notification_user ON notification(user_id);
+CREATE INDEX IF NOT EXISTS idx_notification_user_unread ON notification(user_id, is_read);
+
+-- Message table: private messages between users
+CREATE TABLE IF NOT EXISTS message (
+    id              INT PRIMARY KEY AUTO_INCREMENT,
+    sender_id       INT NOT NULL,
+    receiver_id     INT NOT NULL,
+    content         TEXT NOT NULL,
+    is_read         BOOLEAN DEFAULT FALSE,
+    create_time     DATETIME DEFAULT CURRENT_TIMESTAMP,
+    conversation_id VARCHAR(50) NOT NULL  -- format: min_max of user IDs
+);
+
+CREATE INDEX IF NOT EXISTS idx_message_receiver ON message(receiver_id);
+CREATE INDEX IF NOT EXISTS idx_message_conversation ON message(conversation_id, create_time);
+CREATE INDEX IF NOT EXISTS idx_message_receiver_unread ON message(receiver_id, is_read);

src/main/resources/templates/comm/header.ftl

@@ -26,9 +26,25 @@
             </div>
             <div class="item">
                 <a id="themeToggle" title="切换主题" style="cursor:pointer; font-size:1.2em; color:inherit;">
-                    <i class="moon icon" id="themeIcon"></i> 主题
+                    <i class="moon icon" id="themeIcon"></i> 
                 </a>
             </div>
+            <#if username??>
+            <div class="item">
+                <a href="/notifications" title="通知" style="position:relative; cursor:pointer; color:inherit;">
+                    <i class="bell icon"></i>
+                    <span id="headerNotifBadge" class="ui circular mini red label"
+                          style="display:none; position:absolute; top:-4px; right:-8px; font-size:10px; padding:2px 4px;"></span>
+                </a>
+            </div>
+            <div class="item">
+                <a href="/messages" title="私信" style="position:relative; cursor:pointer; color:inherit;">
+                    <i class="envelope icon"></i>
+                    <span id="headerMsgBadge" class="ui circular mini red label"
+                          style="display:none; position:absolute; top:-4px; right:-8px; font-size:10px; padding:2px 4px;"></span>
+                </a>
+            </div>
+            </#if>
             <div class="item" id="userlogin">
                 <#if username??>
                     <form class="ui large form" action="/logout"  id="logoutForm" method="post"  style="display: none;">
@@ -70,6 +86,27 @@
                 applyTheme(next);
             };
         }
+        // Fetch unread counts and update header badges
+        function updateBadges() {
+            $.get('/msg_api/unread-counts', function(resp) {
+                if (!resp || resp.code !== 10000) return;
+                var d = resp.data || {};
+                var notifBadge = document.getElementById('headerNotifBadge');
+                var msgBadge = document.getElementById('headerMsgBadge');
+                if (notifBadge) {
+                    if (d.notifications > 0) { notifBadge.textContent = d.notifications > 99 ? '99+' : d.notifications; notifBadge.style.display = ''; }
+                    else { notifBadge.style.display = 'none'; }
+                }
+                if (msgBadge) {
+                    if (d.messages > 0) { msgBadge.textContent = d.messages > 99 ? '99+' : d.messages; msgBadge.style.display = ''; }
+                    else { msgBadge.style.display = 'none'; }
+                }
+            });
+        }
+        if (document.getElementById('headerNotifBadge')) {
+            updateBadges();
+            setInterval(updateBadges, 60000); // refresh every 60s
+        }
     });
 })();
 </script>

src/main/resources/templates/conversation.ftl

@@ -0,0 +1,114 @@
+<!DOCTYPE html>
+<html>
+<title>与 ${otherUsername} 的对话 - Jiscuss</title>
+<head>
+    <meta name="_csrf" content="${_csrf.token}"/>
+    <meta name="_csrf_header" content="${_csrf.headerName}"/>
+    <#include "comm/commjs.ftl"/>
+    <style>
+        .msg-bubble { max-width: 65%; padding: 10px 14px; border-radius: 12px; margin: 6px 0; display: inline-block; word-break: break-word; }
+        .msg-mine { background: #2185d0; color: #fff; border-bottom-right-radius: 2px; }
+        .msg-other { background: #fff; color: #333; border: 1px solid #e0e0e0; border-bottom-left-radius: 2px; }
+        .msg-row { display: flex; margin: 4px 0; }
+        .msg-row.mine { justify-content: flex-end; }
+        .msg-row.other { justify-content: flex-start; }
+        .msg-time { font-size: 0.75em; color: #aaa; margin: 2px 8px; align-self: flex-end; }
+        #chatBox { height: 450px; overflow-y: auto; padding: 16px; background: #f7f8fa; border: 1px solid #e0e0e0; border-radius: 8px; }
+        #msgInput { resize: none; border-radius: 6px; }
+    </style>
+</head>
+<body style="background:#f7f8fa;">
+<#include "comm/header.ftl"/>
+
+<div class="ui container" style="margin-top:2em; margin-bottom:4em;">
+    <div class="ui breadcrumb" style="margin-bottom:1em;">
+        <a class="section" href="/messages"><i class="envelope icon"></i> 收件箱</a>
+        <div class="divider"> / </div>
+        <div class="active section">${otherUsername}</div>
+    </div>
+
+    <h3 class="ui header">${otherUsername}</h3>
+
+    <div id="chatBox">
+        <#if messages?has_content>
+            <#list messages as msg>
+            <div class="msg-row <#if msg.senderId == currentUserId>mine<#else>other</#if>">
+                <#if msg.senderId != currentUserId>
+                    <div class="msg-bubble msg-other">${msg.content}</div>
+                    <span class="msg-time">${msg.createTime?string("HH:mm")}</span>
+                <#else>
+                    <span class="msg-time">${msg.createTime?string("HH:mm")}</span>
+                    <div class="msg-bubble msg-mine">${msg.content}</div>
+                </#if>
+            </div>
+            </#list>
+        <#else>
+        <div style="text-align:center; color:#aaa; padding:60px 0;">暂无消息，发送第一条吧！</div>
+        </#if>
+    </div>
+
+    <div class="ui form" style="margin-top:1em;">
+        <div class="field">
+            <textarea id="msgInput" rows="3" placeholder="输入消息..." style="width:100%;"></textarea>
+        </div>
+        <button class="ui primary button" id="sendBtn">
+            <i class="send icon"></i> 发送
+        </button>
+    </div>
+</div>
+
+<#include "comm/footer.ftl"/>
+
+<script>
+var otherId = ${otherId};
+var csrfToken = $('meta[name="_csrf"]').attr('content');
+var csrfHeader = $('meta[name="_csrf_header"]').attr('content');
+
+$('#sendBtn').on('click', function() {
+    var content = $('#msgInput').val().trim();
+    if (!content) return;
+    $(this).addClass('loading');
+    var headers = {};
+    headers[csrfHeader] = csrfToken;
+    $.ajax({
+        url: '/msg_api/messages/send',
+        type: 'POST',
+        headers: headers,
+        data: { receiverId: otherId, content: content },
+        success: function(resp) {
+            $('#sendBtn').removeClass('loading');
+            if (resp && resp.code === 10000) {
+                $('#msgInput').val('');
+                // Append new bubble
+                var now = new Date();
+                var timeStr = (now.getHours()<10?'0':'')+now.getHours()+':'+(now.getMinutes()<10?'0':'')+now.getMinutes();
+                var html = '<div class="msg-row mine">' +
+                    '<span class="msg-time">'+timeStr+'</span>' +
+                    '<div class="msg-bubble msg-mine">'+$('<div>').text(content).html()+'</div>' +
+                    '</div>';
+                $('#chatBox').append(html);
+                $('#chatBox').scrollTop($('#chatBox')[0].scrollHeight);
+            } else {
+                alert(resp.message || '发送失败');
+            }
+        },
+        error: function() {
+            $('#sendBtn').removeClass('loading');
+            alert('发送失败，请重试');
+        }
+    });
+});
+
+// Allow Ctrl+Enter to send
+$('#msgInput').on('keydown', function(e) {
+    if (e.ctrlKey && e.keyCode === 13) { $('#sendBtn').click(); }
+});
+
+// Scroll to bottom on load
+$(document).ready(function() {
+    var box = document.getElementById('chatBox');
+    box.scrollTop = box.scrollHeight;
+});
+</script>
+</body>
+</html>

src/main/resources/templates/discussions.ftl

@@ -326,13 +326,14 @@
 
         // User card — custom fixed-position tooltip (more reliable than Semantic UI popup)
         var cardCache = {};
-        var $card = $('<div id="jUserCard" style="position:fixed;background:#fff;border:1px solid #ddd;border-radius:6px;padding:12px 16px;box-shadow:0 4px 16px rgba(0,0,0,.15);z-index:9999;min-width:180px;display:none;pointer-events:none;"></div>').appendTo('body');
+        var $card = $('<div id="jUserCard" style="position:fixed;background:#fff;border:1px solid #ddd;border-radius:6px;padding:12px 16px;box-shadow:0 4px 16px rgba(0,0,0,.15);z-index:9999;min-width:180px;display:none;"></div>').appendTo('body');
 
         function showCard(u, x, y) {
             $card.html(
                 '<div style="font-weight:700;font-size:1em;margin-bottom:4px;">' + (u.username || '') + '</div>' +
                 '<div style="color:#888;font-size:.88em;">发帖: ' + (u.discussionsCount || 0) +
-                '&nbsp;&nbsp;回复: ' + (u.commentsCount || 0) + '</div>'
+                '&nbsp;&nbsp;回复: ' + (u.commentsCount || 0) + '</div>' +
+                '<div style="margin-top:8px;"><a class="open-msg-modal" data-uid="' + u.id + '" data-uname="' + (u.username||'') + '" style="font-size:.85em;color:#2185d0;cursor:pointer;"><i class="envelope icon"></i>发私信</a></div>'
             ).css({ left: x + 14, top: y + 14 }).show();
         }
 
@@ -340,7 +341,7 @@
             var userId = $(this).data('user-id');
             if (!userId) return;
             if (cardCache[userId]) { showCard(cardCache[userId], e.clientX, e.clientY); return; }
-            $.getJSON('/user_api/user/' + userId, function(res) {
+            $.getJSON('/msg_api/user-card/' + userId, function(res) {
                 if (res && res.code === 10000 && res.data) {
                     cardCache[userId] = res.data;
                     showCard(res.data, e.clientX, e.clientY);
@@ -349,8 +350,12 @@
         }).on('mousemove', '.user-card-trigger', function(e) {
             if ($card.is(':visible')) $card.css({ left: e.clientX + 14, top: e.clientY + 14 });
         }).on('mouseleave', '.user-card-trigger', function() {
-            $card.hide();
+            // Delay hide so user can click links inside card
+            setTimeout(function() {
+                if (!$card.is(':hover')) $card.hide();
+            }, 300);
         });
+        $card.on('mouseleave', function() { $card.hide(); });
     });
 
     function voteDiscussion(action) {
@@ -391,6 +396,69 @@
 
 </script>
 <script type="text/javascript" charset="UTF-8" src="/static/js/user/discussions.js"></script>
+
+<#-- 私信弹窗 Modal -->
+<div class="ui small modal" id="sendMsgModal">
+    <div class="header"><i class="envelope icon"></i> 发送私信给 <span id="msgModalUsername"></span></div>
+    <div class="content">
+        <div class="ui form">
+            <div class="field">
+                <textarea id="msgModalContent" rows="4" placeholder="输入消息内容..." style="resize:none;"></textarea>
+            </div>
+            <div id="msgModalError" class="ui red message" style="display:none;"></div>
+        </div>
+    </div>
+    <div class="actions">
+        <div class="ui cancel button">取消</div>
+        <div class="ui primary button" id="msgModalSendBtn">
+            <i class="send icon"></i>发送
+        </div>
+    </div>
+</div>
+
+<script>
+var _msgReceiverId = null;
+var _msgCsrfToken = $('meta[name="_csrf"]').attr('content');
+var _msgCsrfHeader = $('meta[name="_csrf_header"]').attr('content');
+
+// Open modal when user clicks 发私信 in user card
+$(document).on('click', '.open-msg-modal', function() {
+    _msgReceiverId = $(this).data('uid');
+    var uname = $(this).data('uname');
+    $('#msgModalUsername').text(uname);
+    $('#msgModalContent').val('');
+    $('#msgModalError').hide();
+    $('#jUserCard').hide();
+    $('#sendMsgModal').modal('show');
+});
+
+$('#msgModalSendBtn').on('click', function() {
+    var content = $('#msgModalContent').val().trim();
+    if (!content) { $('#msgModalError').text('消息内容不能为空').show(); return; }
+    var $btn = $(this).addClass('loading disabled');
+    var headers = {};
+    headers[_msgCsrfHeader] = _msgCsrfToken;
+    $.ajax({
+        url: '/msg_api/messages/send',
+        type: 'POST',
+        headers: headers,
+        data: { receiverId: _msgReceiverId, content: content },
+        success: function(resp) {
+            $btn.removeClass('loading disabled');
+            if (resp && resp.code === 10000) {
+                $('#sendMsgModal').modal('hide');
+                massage('私信发送成功！', 'success', '');
+            } else {
+                $('#msgModalError').text((resp && resp.msg) || '发送失败，请重试').show();
+            }
+        },
+        error: function() {
+            $btn.removeClass('loading disabled');
+            $('#msgModalError').text('请求失败，请确认已登录').show();
+        }
+    });
+});
+</script>
 </body>
 
 </html>

src/main/resources/templates/messages.ftl

@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>私信收件箱 - Jiscuss</title>
+    <meta name="_csrf" content="${_csrf.token}"/>
+    <meta name="_csrf_header" content="${_csrf.headerName}"/>
+    <#include "comm/commjs.ftl"/>
+</head>
+<body style="background:#f7f8fa;">
+<#include "comm/header.ftl"/>
+
+<div class="ui container" style="margin-top:2em; margin-bottom:4em;">
+    <h2 class="ui header">
+        <i class="envelope icon"></i>
+        <div class="content">私信收件箱
+            <#if unreadMsgCount?? && (unreadMsgCount > 0)>
+                <span class="ui mini red label">${unreadMsgCount} 未读</span>
+            </#if>
+        </div>
+    </h2>
+    <div class="ui divider"></div>
+
+    <#if inboxItems?has_content>
+    <div class="ui relaxed divided list">
+        <#list inboxItems as item>
+        <a class="item" href="/messages/${item.otherId}"
+           style="padding:1em 0; display:flex; align-items:center; gap:1em; color:inherit; text-decoration:none; cursor:pointer;">
+            <div class="ui circular label"
+                 style="min-width:40px;height:40px;line-height:40px;text-align:center;font-size:1.1em;background:#2185d0;color:#fff;">
+                ${(item.otherUsername?has_content)?then(item.otherUsername?substring(0,1)?upper_case, "?")}
+            </div>
+            <div style="flex:1; overflow:hidden;">
+                <div style="font-weight:bold;">${item.otherUsername}</div>
+                <div style="color:#888; font-size:0.9em; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:450px;">
+                    ${item.lastContent}
+                </div>
+            </div>
+            <div style="color:#aaa; font-size:0.85em; white-space:nowrap;">
+                <#if item.lastTime??>${item.lastTime?string("MM-dd HH:mm")}</#if>
+            </div>
+            <#if item.hasUnread>
+                <span class="ui mini red label">未读</span>
+            </#if>
+        </a>
+        </#list>
+    </div>
+    <#else>
+    <div class="ui placeholder segment">
+        <div class="ui icon header">
+            <i class="envelope open outline icon"></i>
+            暂无私信
+        </div>
+    </div>
+    </#if>
+</div>
+
+<#include "comm/footer.ftl"/>
+</body>
+</html>

src/main/resources/templates/notifications.ftl

@@ -0,0 +1,77 @@
+<!DOCTYPE html>
+<html>
+<title>通知 - Jiscuss</title>
+<head>
+    <meta name="_csrf" content="${_csrf.token}"/>
+    <meta name="_csrf_header" content="${_csrf.headerName}"/>
+    <#include "comm/commjs.ftl"/>
+</head>
+<body style="background:#f7f8fa;">
+<#include "comm/header.ftl"/>
+
+<div class="ui container" style="margin-top:2em; margin-bottom:4em;">
+    <h2 class="ui header">
+        <i class="bell icon"></i>
+        <div class="content">通知</div>
+    </h2>
+    <div class="ui divider"></div>
+
+    <#if notifications?has_content>
+    <div class="ui feed" style="background:#fff; border-radius:8px; padding:1em;">
+        <#list notifications as notif>
+        <div class="event" style="padding:1em 0; border-bottom:1px solid #f0f0f0;">
+            <div class="label" style="float:left; margin-right:1em;">
+                <#if notif.type == "reply">
+                    <i class="reply blue icon" style="font-size:1.5em;"></i>
+                <#elseif notif.type == "like">
+                    <i class="heart red icon" style="font-size:1.5em;"></i>
+                <#else>
+                    <i class="info circle grey icon" style="font-size:1.5em;"></i>
+                </#if>
+            </div>
+            <div class="content" style="margin-left:3em;">
+                <div class="summary">
+                    <#if fromUsernames?has_content && notif?index < fromUsernames?size>
+                        <strong>${fromUsernames[notif?index]}</strong>
+                    </#if>
+                    ${notif.title!"通知"}
+                    <#if notif.relatedId?? && notif.relatedType?? && notif.relatedType == "discussion">
+                        &nbsp;<a href="/getdiscussionsbyid?id=${notif.relatedId}">查看帖子</a>
+                    <#elseif notif.relatedId?? && notif.relatedType?? && notif.relatedType == "post">
+                        &nbsp;<a href="#">查看回复</a>
+                    </#if>
+                </div>
+                <#if notif.content??>
+                <div class="extra text" style="color:#666; margin-top:4px;">${notif.content}</div>
+                </#if>
+                <div class="date" style="color:#aaa; font-size:0.85em; margin-top:4px;">
+                    <#if notif.createTime??>${notif.createTime?string("yyyy-MM-dd HH:mm")}</#if>
+                </div>
+            </div>
+        </div>
+        </#list>
+    </div>
+
+    <#if (totalPages > 1)>
+    <div class="ui center aligned basic segment">
+        <div class="ui pagination menu">
+            <#list 0..(totalPages-1) as p>
+            <a class="item <#if p == currentPage>active</#if>" href="/notifications?page=${p}">${p+1}</a>
+            </#list>
+        </div>
+    </div>
+    </#if>
+
+    <#else>
+    <div class="ui placeholder segment">
+        <div class="ui icon header">
+            <i class="bell slash outline icon"></i>
+            暂无通知
+        </div>
+    </div>
+    </#if>
+</div>
+
+<#include "comm/footer.ftl"/>
+</body>
+</html>

src/main/resources/templates/user.ftl

@@ -1,118 +1,152 @@
 <!DOCTYPE html>
 <html>
-<title>用户详情页</title>
+<title>${username!}的个人主页 - Jiscuss</title>
 <head>
-    <!-- <link rel="stylesheet" type="text/css" href="static/semanticui/semantic.css"> -->
-    <!-- <script src="static/jquery/jquery-3.4.1.min.js"></script> -->
-    <!-- <script src="static/semanticui/semantic.min.js"></script> -->
     <meta name="_csrf" content="${_csrf.token}"/>
     <meta name="_csrf_header" content="${_csrf.headerName}"/>
     <#include "comm/commjs.ftl"/>
+    <style>
+        .profile-card { background:#fff; border-radius:10px; padding:24px; box-shadow:0 1px 4px rgba(0,0,0,.08); margin-bottom:1.5em; }
+        .profile-stat { text-align:center; }
+        .profile-stat .number { font-size:1.6em; font-weight:bold; color:var(--color-primary,#2185d0); }
+        .profile-stat .label2 { color:#888; font-size:0.85em; }
+        .tab-content { background:#fff; border-radius:8px; padding:1.2em; min-height:200px; }
+    </style>
 </head>
 <body style="background:#f7f8fa;">
 <#include "comm/header.ftl"/>
 
-<div class="ui container" id="container">
+<div class="ui container" style="margin-top:2em; margin-bottom:4em;">
-    <h1>${username}的个人主页</h1>
+    <div class="ui grid stackable">
+        <#-- Left: profile info -->
+        <div class="four wide column">
+            <div class="profile-card" style="text-align:center;">
+                <div class="ui circular image" style="width:80px;height:80px;margin:0 auto 1em;">
+                    <#if userEntity?? && userEntity.avatar??>
+                        <img src="${userEntity.avatar}" style="width:80px;height:80px;object-fit:cover;border-radius:50%;">
+                    <#else>
+                        <div style="width:80px;height:80px;border-radius:50%;background:#2185d0;color:#fff;font-size:2em;line-height:80px;text-align:center;">
+                            ${(username!"")?substring(0,1)?upper_case}
+                        </div>
+                    </#if>
+                </div>
+                <div style="font-size:1.2em; font-weight:bold;">${username!}</div>
+                <#if userEntity?? && userEntity.realname??>
+                    <div style="color:#888; font-size:0.9em;">${userEntity.realname}</div>
+                </#if>
+                <#if userEntity?? && userEntity.joinTime??>
+                    <div style="color:#aaa; font-size:0.8em; margin-top:4px;">
+                        加入于 ${userEntity.joinTime?string("yyyy-MM-dd")}
+                    </div>
+                </#if>
+            </div>
+            <div class="profile-card">
+                <div class="ui three column grid" style="text-align:center;">
+                    <div class="column profile-stat">
+                        <div class="number">${liveDiscCount!0}</div>
+                        <div class="label2">发帖</div>
+                    </div>
+                    <div class="column profile-stat">
+                        <div class="number">${liveReplyCount!0}</div>
+                        <div class="label2">回复</div>
+                    </div>
+                    <div class="column profile-stat">
+                        <div class="number">${(userEntity.level)!1}</div>
+                        <div class="label2">等级</div>
+                    </div>
+                </div>
+            </div>
+        </div>
 
-    <h2 class="ui dividing header">详情</h2>
+        <#-- Right: tabs -->
+        <div class="twelve wide column">
+            <div class="ui pointing secondary menu">
+                <a class="item <#if type == 'discussion'>active</#if>" href="/user?type=discussion">
+                    <i class="list icon"></i>主题
+                </a>
+                <a class="item <#if type == 'reply'>active</#if>" href="/user?type=reply">
+                    <i class="comment icon"></i>回复
+                </a>
+                <a class="item <#if type == 'like'>active</#if>" href="/user?type=like">
+                    <i class="heart icon"></i>点赞
+                </a>
+            </div>
 
-    <div class="ui vertical stripe segment">
+            <div class="tab-content">
-        <#--        <div class="ui middle aligned stackable grid container">-->
+                <#if type == 'discussion'>
-        <div class="ui internally celled grid">
+                    <#if discussions?has_content>
-            <div class="row">
+                        <div class="ui divided list">
-                <div class="eight wide column">
+                        <#list discussions as d>
-                    <div class="ui secondary menu">
+                            <div class="item" style="padding:10px 0; display:flex; justify-content:space-between; align-items:center;">
-                        <a class="item ${discussion}" href="/user?type=discussion">主题</a>
+                                <div>
-                        <a class="item ${change}" href="/user?type=change">动态</a>
+                                    <a href="/getdiscussionsbyid?id=${d.id}" style="font-weight:500;">${d.title}</a>
-                        <a class="item ${like}" href="/user?type=like">喜欢收藏</a>
+                                    <div style="color:#aaa; font-size:0.8em; margin-top:2px;">
+                                        <#if d.startTime??>${d.startTime?string("yyyy-MM-dd")}</#if>
+                                    </div>
+                                </div>
+                                <div style="color:#aaa; font-size:0.85em; white-space:nowrap; margin-left:1em;">
+                                    <i class="comment outline icon"></i>${(d.commentsCount)!0}
+                                    &nbsp;<i class="eye icon"></i>${(d.viewCount)!0}
+                                </div>
+                            </div>
+                        </#list>
+                        </div>
+                    <#else>
+                        <div class="ui placeholder segment" style="border:none; box-shadow:none;">
+                            <div class="ui icon header"><i class="file outline icon"></i>暂无发帖记录</div>
+                        </div>
+                    </#if>
 
+                <#elseif type == 'reply'>
+                    <#if posts?has_content>
+                        <div class="ui divided list">
+                        <#list posts as p>
+                            <div class="item" style="padding:10px 0;">
+                                <div style="color:#888; font-size:0.85em; margin-bottom:4px;">
+                                    <#if discTitles?has_content && p?index < discTitles?size>
+                                        回复了 <a href="/getdiscussionsbyid?id=${p.discussionId!0}">${discTitles[p?index]}</a>
+                                    </#if>
+                                    &nbsp;·&nbsp;
+                                    <#if p.createTime??>${p.createTime?string("MM-dd HH:mm")}</#if>
                                 </div>
-                    <div class="ui bottom attached tab segment ${discussion}">
+                                <div style="color:#333;"><#if (p.content?length > 150)>${p.content?html?substring(0, 150)}…<#else>${p.content?html}</#if></div>
-                        主题...
                             </div>
-                    <div class="ui bottom attached tab segment ${change}">
+                        </#list>
-                        动态...
                         </div>
-                    <div class="ui bottom attached tab segment ${like}">
+                    <#else>
-                        喜欢收藏...
+                        <div class="ui placeholder segment" style="border:none; box-shadow:none;">
+                            <div class="ui icon header"><i class="comment outline icon"></i>暂无回复记录</div>
+                        </div>
+                    </#if>
+
+                <#elseif type == 'like'>
+                    <#if likedDiscussions?has_content>
+                        <div class="ui divided list">
+                        <#list likedDiscussions as d>
+                            <div class="item" style="padding:10px 0; display:flex; justify-content:space-between; align-items:center;">
+                                <div>
+                                    <a href="/getdiscussionsbyid?id=${d.id}" style="font-weight:500;">${d.title}</a>
+                                    <div style="color:#aaa; font-size:0.8em;">
+                                        <#if d.startTime??>${d.startTime?string("yyyy-MM-dd")}</#if>
                                     </div>
                                 </div>
-                <div class="six wide right floated column">
+                                <div style="color:#aaa; font-size:0.85em; white-space:nowrap; margin-left:1em;">
-                    <div class="ui link cards">
+                                    <i class="heart red icon"></i>${(d.likeCount)!0}
-                        <div class="card">
-                            <div class="image">
-                                <img src="static/assets/images/logo.png">
-                            </div>
-                            <div class="content">
-                                <div class="header">Matt Giampietro</div>
-                                <div class="meta">
-                                    <a>Friends</a>
-                                </div>
-                                <div class="description">
-                                    Matthew is an interior designer living in New York.
                                 </div>
                             </div>
-                            <div class="extra content">
+                        </#list>
-                              <span class="right floated">
-                                Joined in 2013
-                              </span>
-                                <span>
-                                <i class="user icon"></i>
-                                75 Friends
-                              </span>
                         </div>
+                    <#else>
+                        <div class="ui placeholder segment" style="border:none; box-shadow:none;">
+                            <div class="ui icon header"><i class="heart outline icon"></i>暂无点赞记录</div>
                         </div>
-                    </div>
+                    </#if>
-                </div>
+                </#if>
-            </div>
-            <div class="row">
-                <div class="center aligned column">
-                    <button class="ui basic button" id="userButton">
-                        <i class="icon hand peace outline"></i>
-                        小按钮·点下试试
-                    </button>
-                </div>
             </div>
         </div>
     </div>
 </div>
 
 <#include "comm/footer.ftl"/>
-
-<#--    <div class="ui bottom  vertical inverted sidebar labeled icon menu" id="userButtonsidebar">-->
-<div class="ui bottom item three labeled icon sidebar menu scale down" id="userButtonsidebar">
-    <#--            <div class="ui bottom demo inverted nine item labeled icon sidebar menu scale down visible" style="">-->
-
-    <a class="item">
-        <i class="home icon"></i>
-        主题
-    </a>
-    <a class="item">
-        <i class="block layout icon"></i>
-        动态
-    </a>
-    <a class="item">
-        <i class="smile icon"></i>
-        喜欢收藏
-    </a>
-</div>
-<script type="text/javascript">
-
-    $(document).ready(function () {
-        <#if username??>
-        setusername('${username}');
-        console.log('已经登陆：' + username);
-        </#if>
-        <#--setDiscussionsId('${discussions.id}');-->
-
-        $('#userTab')
-            .tab()
-        ;
-    });
-
-</script>
-<script type="text/javascript" charset="UTF-8" src="/static/js/user/user.js"></script>
 </body>
-
 </html>