feat: add paginated notification API and frontend support

backend/src/main/java/com/openisle/controller/NotificationController.java

@@ -23,9 +23,17 @@ public class NotificationController {
     private final NotificationMapper notificationMapper;
 
     @GetMapping
-    public List<NotificationDto> list(@RequestParam(value = "read", required = false) Boolean read,
+    public List<NotificationDto> list(@RequestParam(value = "page", defaultValue = "0") int page,
                                       Authentication auth) {
-        return notificationService.listNotifications(auth.getName(), read).stream()
+        return notificationService.listNotifications(auth.getName(), null, page).stream()
+                .map(notificationMapper::toDto)
+                .collect(Collectors.toList());
+    }
+
+    @GetMapping("/unread")
+    public List<NotificationDto> listUnread(@RequestParam(value = "page", defaultValue = "0") int page,
+                                            Authentication auth) {
+        return notificationService.listNotifications(auth.getName(), false, page).stream()
                 .map(notificationMapper::toDto)
                 .collect(Collectors.toList());
     }

backend/src/main/java/com/openisle/repository/NotificationRepository.java

@@ -5,6 +5,8 @@ import com.openisle.model.User;
 import com.openisle.model.Post;
 import com.openisle.model.Comment;
 import com.openisle.model.NotificationType;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.util.List;
@@ -13,6 +15,9 @@ import java.util.List;
 public interface NotificationRepository extends JpaRepository<Notification, Long> {
     List<Notification> findByUserOrderByCreatedAtDesc(User user);
     List<Notification> findByUserAndReadOrderByCreatedAtDesc(User user, boolean read);
+
+    Page<Notification> findByUserOrderByCreatedAtDesc(User user, Pageable pageable);
+    Page<Notification> findByUserAndReadOrderByCreatedAtDesc(User user, boolean read, Pageable pageable);
     long countByUserAndRead(User user, boolean read);
     List<Notification> findByPost(Post post);
     List<Notification> findByComment(Comment comment);

backend/src/main/java/com/openisle/service/NotificationService.java

@@ -24,6 +24,8 @@ import java.util.List;
 import java.util.ArrayList;
 import java.util.concurrent.Executor;
 import java.util.stream.Collectors;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 
 /** Service for creating and retrieving notifications. */
 @Service
@@ -181,16 +183,21 @@ public class NotificationService {
     }
 
     public List<Notification> listNotifications(String username, Boolean read) {
+        return listNotifications(username, read, 0);
+    }
+
+    public List<Notification> listNotifications(String username, Boolean read, int page) {
         User user = userRepository.findByUsername(username)
                 .orElseThrow(() -> new com.openisle.exception.NotFoundException("User not found"));
         Set<NotificationType> disabled = user.getDisabledNotificationTypes();
-        List<Notification> list;
+        Page<Notification> p;
+        Pageable pageable = org.springframework.data.domain.PageRequest.of(page, 50);
         if (read == null) {
-            list = notificationRepository.findByUserOrderByCreatedAtDesc(user);
+            p = notificationRepository.findByUserOrderByCreatedAtDesc(user, pageable);
         } else {
-            list = notificationRepository.findByUserAndReadOrderByCreatedAtDesc(user, read);
+            p = notificationRepository.findByUserAndReadOrderByCreatedAtDesc(user, read, pageable);
         }
-        return list.stream().filter(n -> !disabled.contains(n.getType())).collect(Collectors.toList());
+        return p.getContent().stream().filter(n -> !disabled.contains(n.getType())).collect(Collectors.toList());
     }
 
     public void markRead(String username, List<Long> ids) {

backend/src/test/java/com/openisle/controller/NotificationControllerTest.java

@@ -45,7 +45,7 @@ class NotificationControllerTest {
         p.setId(2L);
         n.setPost(p);
         n.setCreatedAt(LocalDateTime.now());
-        when(notificationService.listNotifications("alice", null))
+        when(notificationService.listNotifications("alice", null, 0))
                 .thenReturn(List.of(n));
 
         NotificationDto dto = new NotificationDto();
@@ -62,6 +62,23 @@ class NotificationControllerTest {
                 .andExpect(jsonPath("$[0].post.id").value(2));
     }
 
+    @Test
+    void listUnreadNotifications() throws Exception {
+        Notification n = new Notification();
+        n.setId(3L);
+        n.setType(NotificationType.POST_VIEWED);
+        when(notificationService.listNotifications("alice", false, 0)).thenReturn(List.of(n));
+
+        NotificationDto dto = new NotificationDto();
+        dto.setId(3L);
+        when(notificationMapper.toDto(n)).thenReturn(dto);
+
+        mockMvc.perform(get("/api/notifications/unread")
+                        .principal(new UsernamePasswordAuthenticationToken("alice", "p")))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$[0].id").value(3));
+    }
+
     @Test
     void markReadEndpoint() throws Exception {
         mockMvc.perform(post("/api/notifications/read")

backend/src/test/java/com/openisle/service/NotificationServiceTest.java

@@ -65,12 +65,15 @@ class NotificationServiceTest {
         when(uRepo.findByUsername("bob")).thenReturn(Optional.of(user));
 
         Notification n = new Notification();
-        when(nRepo.findByUserOrderByCreatedAtDesc(user)).thenReturn(List.of(n));
+        org.springframework.data.domain.Page<Notification> page =
+                new org.springframework.data.domain.PageImpl<>(List.of(n));
+        when(nRepo.findByUserOrderByCreatedAtDesc(eq(user), any(org.springframework.data.domain.Pageable.class)))
+                .thenReturn(page);
 
         List<Notification> list = service.listNotifications("bob", null);
 
         assertEquals(1, list.size());
-        verify(nRepo).findByUserOrderByCreatedAtDesc(user);
+        verify(nRepo).findByUserOrderByCreatedAtDesc(eq(user), any(org.springframework.data.domain.Pageable.class));
     }
 
     @Test

frontend_nuxt/pages/message.vue

@@ -53,13 +53,13 @@
       </div>
 
       <BasePlaceholder
-        v-else-if="filteredNotifications.length === 0"
+        v-else-if="notifications.length === 0"
         text="暂时没有消息 :)"
         icon="fas fa-inbox"
       />
 
-      <div class="timeline-container" v-if="filteredNotifications.length > 0">
-        <BaseTimeline :items="filteredNotifications">
+      <div class="timeline-container" v-if="notifications.length > 0">
+        <BaseTimeline :items="notifications">
           <template #item="{ item }">
             <div class="notif-content" :class="{ read: item.read }">
               <span v-if="!item.read" class="unread-dot"></span>
@@ -505,16 +505,18 @@
             </div>
           </template>
         </BaseTimeline>
+        <InfiniteLoadMore :key="ioKey" :on-load="fetchNextPage" :pause="isLoadingMessage" />
       </div>
     </template>
   </div>
 </template>
 
 <script setup>
-import { computed, onMounted, ref } from 'vue'
+import { onActivated, ref, watch } from 'vue'
 import BasePlaceholder from '~/components/BasePlaceholder.vue'
 import BaseTimeline from '~/components/BaseTimeline.vue'
 import NotificationContainer from '~/components/NotificationContainer.vue'
+import InfiniteLoadMore from '~/components/InfiniteLoadMore.vue'
 import { toast } from '~/main'
 import { authState, getToken } from '~/utils/auth'
 import { stripMarkdownLength } from '~/utils/markdown'
@@ -525,6 +527,8 @@ import {
   markRead,
   notifications,
   markAllRead,
+  fetchNotificationPreferences,
+  updateNotificationPreference,
 } from '~/utils/notification'
 import TimeManager from '~/utils/time'
 
@@ -535,9 +539,7 @@ const selectedTab = ref(
   ['all', 'unread', 'control'].includes(route.query.tab) ? route.query.tab : 'unread',
 )
 const notificationPrefs = ref([])
-const filteredNotifications = computed(() =>
-  selectedTab.value === 'all' ? notifications.value : notifications.value.filter((n) => !n.read),
-)
+const ioKey = ref(0)
 
 const fetchPrefs = async () => {
   notificationPrefs.value = await fetchNotificationPreferences()
@@ -547,7 +549,7 @@ const togglePref = async (pref) => {
   const ok = await updateNotificationPreference(pref.type, !pref.enabled)
   if (ok) {
     pref.enabled = !pref.enabled
-    await fetchNotifications()
+    await fetchNotifications(selectedTab.value, true)
     await fetchUnreadCount()
   } else {
     toast.error('操作失败')
@@ -628,9 +630,20 @@ const formatType = (t) => {
 }
 
 onActivated(() => {
-  fetchNotifications()
+  fetchNotifications(selectedTab.value, true)
   fetchPrefs()
 })
+
+watch(selectedTab, (tab) => {
+  if (tab !== 'control') {
+    fetchNotifications(tab, true)
+  } else {
+    fetchPrefs()
+  }
+  ioKey.value++
+})
+
+const fetchNextPage = () => fetchNotifications(selectedTab.value)
 </script>
 
 <style scoped>

frontend_nuxt/utils/notification.js

@@ -118,175 +118,194 @@ export async function updateNotificationPreference(type, enabled) {
 function createFetchNotifications() {
   const notifications = ref([])
   const isLoadingMessage = ref(false)
-  const fetchNotifications = async () => {
+  const page = ref(0)
+  const finished = ref(false)
+  const currentTab = ref('all')
+
+  const fetchNotifications = async (tab = 'all', reset = false) => {
     const config = useRuntimeConfig()
     const API_BASE_URL = config.public.apiBaseUrl
-    if (isLoadingMessage && notifications && markRead) {
-      try {
-        const token = getToken()
-        if (!token) {
-          toast.error('请先登录')
-          return
-        }
-        isLoadingMessage.value = true
-        notifications.value = []
-        const res = await fetch(`${API_BASE_URL}/api/notifications`, {
-          headers: {
-            Authorization: `Bearer ${token}`,
-          },
-        })
-        isLoadingMessage.value = false
-        if (!res.ok) {
-          toast.error('获取通知失败')
-          return
-        }
-        const data = await res.json()
-
-        for (const n of data) {
-          if (n.type === 'COMMENT_REPLY') {
-            notifications.value.push({
-              ...n,
-              src: n.comment.author.avatar,
-              iconClick: () => {
-                markRead(n.id)
-                navigateTo(`/users/${n.comment.author.id}`, { replace: true })
-              },
-            })
-          } else if (n.type === 'REACTION') {
-            notifications.value.push({
-              ...n,
-              emoji: reactionEmojiMap[n.reactionType],
-              iconClick: () => {
-                if (n.fromUser) {
-                  markRead(n.id)
-                  navigateTo(`/users/${n.fromUser.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'POST_VIEWED') {
-            notifications.value.push({
-              ...n,
-              src: n.fromUser ? n.fromUser.avatar : null,
-              icon: n.fromUser ? undefined : iconMap[n.type],
-              iconClick: () => {
-                if (n.fromUser) {
-                  markRead(n.id)
-                  navigateTo(`/users/${n.fromUser.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'LOTTERY_WIN') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  router.push(`/posts/${n.post.id}`)
-                }
-              },
-            })
-          } else if (n.type === 'LOTTERY_DRAW') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  router.push(`/posts/${n.post.id}`)
-                }
-              },
-            })
-          } else if (n.type === 'POST_UPDATED') {
-            notifications.value.push({
-              ...n,
-              src: n.comment.author.avatar,
-              iconClick: () => {
-                markRead(n.id)
-                navigateTo(`/users/${n.comment.author.id}`, { replace: true })
-              },
-            })
-          } else if (n.type === 'USER_ACTIVITY') {
-            notifications.value.push({
-              ...n,
-              src: n.comment.author.avatar,
-              iconClick: () => {
-                markRead(n.id)
-                navigateTo(`/users/${n.comment.author.id}`, { replace: true })
-              },
-            })
-          } else if (n.type === 'MENTION') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.fromUser) {
-                  markRead(n.id)
-                  navigateTo(`/users/${n.fromUser.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'USER_FOLLOWED' || n.type === 'USER_UNFOLLOWED') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.fromUser) {
-                  markRead(n.id)
-                  navigateTo(`/users/${n.fromUser.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'FOLLOWED_POST') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  navigateTo(`/posts/${n.post.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'POST_SUBSCRIBED' || n.type === 'POST_UNSUBSCRIBED') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  navigateTo(`/posts/${n.post.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'POST_REVIEW_REQUEST') {
-            notifications.value.push({
-              ...n,
-              src: n.fromUser ? n.fromUser.avatar : null,
-              icon: n.fromUser ? undefined : iconMap[n.type],
-              iconClick: () => {
-                if (n.post) {
-                  markRead(n.id)
-                  navigateTo(`/posts/${n.post.id}`, { replace: true })
-                }
-              },
-            })
-          } else if (n.type === 'REGISTER_REQUEST') {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-              iconClick: () => {},
-            })
-          } else {
-            notifications.value.push({
-              ...n,
-              icon: iconMap[n.type],
-            })
-          }
-        }
-      } catch (e) {
-        console.error(e)
+    try {
+      const token = getToken()
+      if (!token) {
+        toast.error('请先登录')
+        return true
       }
+      if (reset || tab !== currentTab.value) {
+        notifications.value = []
+        page.value = 0
+        finished.value = false
+        currentTab.value = tab
+      }
+      if (finished.value) return true
+      isLoadingMessage.value = true
+      let url = `${API_BASE_URL}/api/notifications`
+      if (currentTab.value === 'unread') url += '/unread'
+      url += `?page=${page.value}`
+      const res = await fetch(url, {
+        headers: {
+          Authorization: `Bearer ${token}`,
+        },
+      })
+      isLoadingMessage.value = false
+      if (!res.ok) {
+        toast.error('获取通知失败')
+        return true
+      }
+      const data = await res.json()
+      for (const n of data) {
+        if (n.type === 'COMMENT_REPLY') {
+          notifications.value.push({
+            ...n,
+            src: n.comment.author.avatar,
+            iconClick: () => {
+              markRead(n.id)
+              navigateTo(`/users/${n.comment.author.id}`, { replace: true })
+            },
+          })
+        } else if (n.type === 'REACTION') {
+          notifications.value.push({
+            ...n,
+            emoji: reactionEmojiMap[n.reactionType],
+            iconClick: () => {
+              if (n.fromUser) {
+                markRead(n.id)
+                navigateTo(`/users/${n.fromUser.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'POST_VIEWED') {
+          notifications.value.push({
+            ...n,
+            src: n.fromUser ? n.fromUser.avatar : null,
+            icon: n.fromUser ? undefined : iconMap[n.type],
+            iconClick: () => {
+              if (n.fromUser) {
+                markRead(n.id)
+                navigateTo(`/users/${n.fromUser.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'LOTTERY_WIN') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                navigateTo(`/posts/${n.post.id}`)
+              }
+            },
+          })
+        } else if (n.type === 'LOTTERY_DRAW') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                navigateTo(`/posts/${n.post.id}`)
+              }
+            },
+          })
+        } else if (n.type === 'POST_UPDATED') {
+          notifications.value.push({
+            ...n,
+            src: n.comment.author.avatar,
+            iconClick: () => {
+              markRead(n.id)
+              navigateTo(`/users/${n.comment.author.id}`, { replace: true })
+            },
+          })
+        } else if (n.type === 'USER_ACTIVITY') {
+          notifications.value.push({
+            ...n,
+            src: n.comment.author.avatar,
+            iconClick: () => {
+              markRead(n.id)
+              navigateTo(`/users/${n.comment.author.id}`, { replace: true })
+            },
+          })
+        } else if (n.type === 'MENTION') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.fromUser) {
+                markRead(n.id)
+                navigateTo(`/users/${n.fromUser.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'USER_FOLLOWED' || n.type === 'USER_UNFOLLOWED') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.fromUser) {
+                markRead(n.id)
+                navigateTo(`/users/${n.fromUser.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'FOLLOWED_POST') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                navigateTo(`/posts/${n.post.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'POST_SUBSCRIBED' || n.type === 'POST_UNSUBSCRIBED') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                navigateTo(`/posts/${n.post.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'POST_REVIEW_REQUEST') {
+          notifications.value.push({
+            ...n,
+            src: n.fromUser ? n.fromUser.avatar : null,
+            icon: n.fromUser ? undefined : iconMap[n.type],
+            iconClick: () => {
+              if (n.post) {
+                markRead(n.id)
+                navigateTo(`/posts/${n.post.id}`, { replace: true })
+              }
+            },
+          })
+        } else if (n.type === 'REGISTER_REQUEST') {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+            iconClick: () => {},
+          })
+        } else {
+          notifications.value.push({
+            ...n,
+            icon: iconMap[n.type],
+          })
+        }
+      }
+      const done = data.length < 50
+      if (!done) {
+        page.value++
+      } else {
+        finished.value = true
+      }
+      return done
+    } catch (e) {
+      console.error(e)
+      isLoadingMessage.value = false
+      return true
     }
   }
 
@@ -335,7 +354,6 @@ function createFetchNotifications() {
     markRead,
     notifications,
     isLoadingMessage,
-    markRead,
     markAllRead,
   }
 }