fix: 修复windows用户自定义筛选时消息量过大导致软件崩溃的BUG

2026-04-23 01:39:37 +08:00 · 2026-02-02 23:51:12 +08:00
parent 38738eb090
commit 878507ba8a
13 changed files with 588 additions and 109 deletions
--- a/electron/main/ipc/messages.ts
+++ b/electron/main/ipc/messages.ts
@@ -149,7 +149,7 @@ export function registerMessagesHandlers({ win }: IpcContext): void {
  // ==================== 自定义筛选 ====================

  /**
-   * 按条件筛选消息并扩充上下文
+   * 按条件筛选消息并扩充上下文（支持分页）
   */
  ipcMain.handle(
    'ai:filterMessagesWithContext',
@@ -159,26 +159,78 @@ export function registerMessagesHandlers({ win }: IpcContext): void {
      keywords?: string[],
      timeFilter?: { startTs: number; endTs: number },
      senderIds?: number[],
-      contextSize?: number
+      contextSize?: number,
+      page?: number,
+      pageSize?: number
    ) => {
      try {
-        return await worker.filterMessagesWithContext(sessionId, keywords, timeFilter, senderIds, contextSize)
+        return await worker.filterMessagesWithContext(
+          sessionId,
+          keywords,
+          timeFilter,
+          senderIds,
+          contextSize,
+          page,
+          pageSize
+        )
      } catch (error) {
        console.error('筛选消息失败：', error)
-        return { blocks: [], stats: { totalMessages: 0, hitMessages: 0, totalChars: 0 } }
+        return {
+          blocks: [],
+          stats: { totalMessages: 0, hitMessages: 0, totalChars: 0 },
+          pagination: { page: page ?? 1, pageSize: pageSize ?? 50, totalBlocks: 0, totalHits: 0, hasMore: false },
+        }
      }
    }
  )

  /**
-   * 获取多个会话的完整消息
+   * 获取多个会话的完整消息（支持分页）
   */
-  ipcMain.handle('ai:getMultipleSessionsMessages', async (_, sessionId: string, chatSessionIds: number[]) => {
-    try {
-      return await worker.getMultipleSessionsMessages(sessionId, chatSessionIds)
-    } catch (error) {
-      console.error('获取多个会话消息失败：', error)
-      return { blocks: [], stats: { totalMessages: 0, hitMessages: 0, totalChars: 0 } }
+  ipcMain.handle(
+    'ai:getMultipleSessionsMessages',
+    async (_, sessionId: string, chatSessionIds: number[], page?: number, pageSize?: number) => {
+      try {
+        return await worker.getMultipleSessionsMessages(sessionId, chatSessionIds, page, pageSize)
+      } catch (error) {
+        console.error('获取多个会话消息失败：', error)
+        return {
+          blocks: [],
+          stats: { totalMessages: 0, hitMessages: 0, totalChars: 0 },
+          pagination: { page: page ?? 1, pageSize: pageSize ?? 50, totalBlocks: 0, totalHits: 0, hasMore: false },
+        }
+      }
    }
-  })
+  )
+
+  /**
+   * 导出筛选结果到文件（后端生成，支持进度）
+   */
+  ipcMain.handle(
+    'ai:exportFilterResultToFile',
+    async (
+      _,
+      params: {
+        sessionId: string
+        sessionName: string
+        outputDir: string
+        filterMode: 'condition' | 'session'
+        keywords?: string[]
+        timeFilter?: { startTs: number; endTs: number }
+        senderIds?: number[]
+        contextSize?: number
+        chatSessionIds?: number[]
+      }
+    ) => {
+      try {
+        return await worker.exportFilterResultToFile(params, (progress) => {
+          // 发送进度到渲染进程
+          win.webContents.send('ai:exportProgress', progress)
+        })
+      } catch (error) {
+        console.error('导出筛选结果失败：', error)
+        return { success: false, error: String(error) }
+      }
+    }
+  )
 }
--- a/electron/main/worker/dbWorker.ts
+++ b/electron/main/worker/dbWorker.ts
@@ -62,6 +62,7 @@ import {
  // 自定义筛选
  filterMessagesWithContext,
  getMultipleSessionsMessages,
+  exportFilterResultToFile,
  // NLP 查询
  getWordFrequency,
  segmentText,
@@ -148,10 +149,11 @@ const syncHandlers: Record<string, (payload: any) => any> = {
  searchSessions: (p) => searchSessions(p.sessionId, p.keywords, p.timeFilter, p.limit, p.previewCount),
  getSessionMessages: (p) => getSessionMessages(p.sessionId, p.chatSessionId, p.limit),

-  // 自定义筛选
+  // 自定义筛选（支持分页）
  filterMessagesWithContext: (p) =>
-    filterMessagesWithContext(p.sessionId, p.keywords, p.timeFilter, p.senderIds, p.contextSize),
-  getMultipleSessionsMessages: (p) => getMultipleSessionsMessages(p.sessionId, p.chatSessionIds),
+    filterMessagesWithContext(p.sessionId, p.keywords, p.timeFilter, p.senderIds, p.contextSize, p.page, p.pageSize),
+  getMultipleSessionsMessages: (p) =>
+    getMultipleSessionsMessages(p.sessionId, p.chatSessionIds, p.page, p.pageSize),

  // NLP 查询
  getWordFrequency: (p) => getWordFrequency(p),
@@ -168,6 +170,8 @@ const asyncHandlers: Record<string, (payload: any, requestId: string) => Promise
  // 增量导入
  analyzeIncrementalImport: (p, id) => analyzeIncrementalImport(p.sessionId, p.filePath, id),
  incrementalImport: (p, id) => incrementalImport(p.sessionId, p.filePath, id),
+  // 导出筛选结果到文件（支持进度报告）
+  exportFilterResultToFile: async (p, id) => exportFilterResultToFile(p, id),
 }

 // 处理消息
--- a/electron/main/worker/workerManager.ts
+++ b/electron/main/worker/workerManager.ts
@@ -122,7 +122,7 @@ export function initWorker(): void {
 /**
 * 发送消息到 Worker 并等待响应
 */
-function sendToWorker<T>(type: string, payload: any): Promise<T> {
+function sendToWorker<T>(type: string, payload: any, timeoutMs: number = 30000): Promise<T> {
  return new Promise((resolve, reject) => {
    if (!worker) {
      try {
@@ -139,13 +139,13 @@ function sendToWorker<T>(type: string, payload: any): Promise<T> {

    worker!.postMessage({ id, type, payload })

-    // 设置超时（30秒）
+    // 设置超时
    setTimeout(() => {
      if (pendingRequests.has(id)) {
        pendingRequests.delete(id)
        reject(new Error(`Worker request timeout: ${type}`))
      }
-    }, 30000)
+    }, timeoutMs)
  })
 }

@@ -810,23 +810,93 @@ export interface FilterResult {
 }

 /**
- * 按条件筛选消息并扩充上下文
+ * 分页信息类型
+ */
+export interface PaginationInfo {
+  page: number
+  pageSize: number
+  totalBlocks: number
+  totalHits: number
+  hasMore: boolean
+}
+
+/**
+ * 带分页的筛选结果类型
+ */
+export interface FilterResultWithPagination extends FilterResult {
+  pagination: PaginationInfo
+}
+
+/**
+ * 按条件筛选消息并扩充上下文（支持分页）
 */
 export async function filterMessagesWithContext(
  sessionId: string,
  keywords?: string[],
  timeFilter?: { startTs: number; endTs: number },
  senderIds?: number[],
-  contextSize?: number
-): Promise<FilterResult> {
-  return sendToWorker('filterMessagesWithContext', { sessionId, keywords, timeFilter, senderIds, contextSize })
+  contextSize?: number,
+  page?: number,
+  pageSize?: number
+): Promise<FilterResultWithPagination> {
+  return sendToWorker('filterMessagesWithContext', {
+    sessionId,
+    keywords,
+    timeFilter,
+    senderIds,
+    contextSize,
+    page,
+    pageSize,
+  })
 }

 /**
- * 获取多个会话的完整消息
+ * 获取多个会话的完整消息（支持分页）
 */
-export async function getMultipleSessionsMessages(sessionId: string, chatSessionIds: number[]): Promise<FilterResult> {
-  return sendToWorker('getMultipleSessionsMessages', { sessionId, chatSessionIds })
+export async function getMultipleSessionsMessages(
+  sessionId: string,
+  chatSessionIds: number[],
+  page?: number,
+  pageSize?: number
+): Promise<FilterResultWithPagination> {
+  return sendToWorker('getMultipleSessionsMessages', { sessionId, chatSessionIds, page, pageSize })
+}
+
+/**
+ * 导出筛选结果参数
+ */
+export interface ExportFilterParams {
+  sessionId: string
+  sessionName: string
+  outputDir: string
+  filterMode: 'condition' | 'session'
+  keywords?: string[]
+  timeFilter?: { startTs: number; endTs: number }
+  senderIds?: number[]
+  contextSize?: number
+  chatSessionIds?: number[]
+}
+
+/**
+ * 导出进度回调类型
+ */
+export interface ExportProgress {
+  stage: 'preparing' | 'exporting' | 'done' | 'error'
+  currentBlock: number
+  totalBlocks: number
+  percentage: number
+  message: string
+}
+
+/**
+ * 导出筛选结果到文件（后端生成）
+ * 使用 10 分钟超时，支持大数据量导出和进度回调
+ */
+export async function exportFilterResultToFile(
+  params: ExportFilterParams,
+  onProgress?: (progress: ExportProgress) => void
+): Promise<{ success: boolean; filePath?: string; error?: string }> {
+  return sendToWorkerWithProgress('exportFilterResultToFile', params, onProgress as any, 600000)
 }

 // ==================== 增量导入 ====================
--- a/electron/preload/apis/ai.ts
+++ b/electron/preload/apis/ai.ts
@@ -2,6 +2,7 @@
 * AI 相关 API - AI 对话、LLM 服务、Agent、Embedding
 */
 import { ipcRenderer } from 'electron'
+import type { ExportProgress } from '../../../src/types/base'

 // ==================== 类型定义 ====================

@@ -237,17 +238,26 @@ export const aiApi = {
    return ipcRenderer.invoke('ai:getMessagesAfter', sessionId, afterId, limit, filter, senderId, keywords)
  },

-  // ==================== 自定义筛选 ====================
+  // ==================== 自定义筛选（支持分页） ====================

  /**
-   * 按条件筛选消息并扩充上下文
+   * 筛选结果消息类型
+   */
+  // FilterMessage 和 FilterResult 类型定义在下方
+
+  /**
+   * 按条件筛选消息并扩充上下文（支持分页）
+   * @param page 页码（从 1 开始，默认 1）
+   * @param pageSize 每页块数（默认 50）
   */
  filterMessagesWithContext: (
    sessionId: string,
    keywords?: string[],
    timeFilter?: { startTs: number; endTs: number },
    senderIds?: number[],
-    contextSize?: number
+    contextSize?: number,
+    page?: number,
+    pageSize?: number
  ): Promise<{
    blocks: Array<{
      startTs: number
@@ -273,16 +283,36 @@ export const aiApi = {
      hitMessages: number
      totalChars: number
    }
+    pagination: {
+      page: number
+      pageSize: number
+      totalBlocks: number
+      totalHits: number
+      hasMore: boolean
+    }
  }> => {
-    return ipcRenderer.invoke('ai:filterMessagesWithContext', sessionId, keywords, timeFilter, senderIds, contextSize)
+    return ipcRenderer.invoke(
+      'ai:filterMessagesWithContext',
+      sessionId,
+      keywords,
+      timeFilter,
+      senderIds,
+      contextSize,
+      page,
+      pageSize
+    )
  },

  /**
-   * 获取多个会话的完整消息
+   * 获取多个会话的完整消息（支持分页）
+   * @param page 页码（从 1 开始，默认 1）
+   * @param pageSize 每页块数（默认 50）
   */
  getMultipleSessionsMessages: (
    sessionId: string,
-    chatSessionIds: number[]
+    chatSessionIds: number[],
+    page?: number,
+    pageSize?: number
  ): Promise<{
    blocks: Array<{
      startTs: number
@@ -308,8 +338,45 @@ export const aiApi = {
      hitMessages: number
      totalChars: number
    }
+    pagination: {
+      page: number
+      pageSize: number
+      totalBlocks: number
+      totalHits: number
+      hasMore: boolean
+    }
  }> => {
-    return ipcRenderer.invoke('ai:getMultipleSessionsMessages', sessionId, chatSessionIds)
+    return ipcRenderer.invoke('ai:getMultipleSessionsMessages', sessionId, chatSessionIds, page, pageSize)
+  },
+
+  /**
+   * 导出筛选结果到文件（后端生成，支持大数据量）
+   */
+  exportFilterResultToFile: (params: {
+    sessionId: string
+    sessionName: string
+    outputDir: string
+    filterMode: 'condition' | 'session'
+    keywords?: string[]
+    timeFilter?: { startTs: number; endTs: number }
+    senderIds?: number[]
+    contextSize?: number
+    chatSessionIds?: number[]
+  }): Promise<{ success: boolean; filePath?: string; error?: string }> => {
+    return ipcRenderer.invoke('ai:exportFilterResultToFile', params)
+  },
+
+  /**
+   * 监听导出进度
+   */
+  onExportProgress: (callback: (progress: ExportProgress) => void) => {
+    const handler = (_event: Electron.IpcRendererEvent, progress: ExportProgress) => {
+      callback(progress)
+    }
+    ipcRenderer.on('ai:exportProgress', handler)
+    return () => {
+      ipcRenderer.removeListener('ai:exportProgress', handler)
+    }
  },

  /**
--- a/electron/preload/index.d.ts
+++ b/electron/preload/index.d.ts
@@ -1,5 +1,5 @@
 import { ElectronAPI } from '@electron-toolkit/preload'
-import type { AnalysisSession, MessageType, ImportProgress } from '../../src/types/base'
+import type { AnalysisSession, MessageType, ImportProgress, ExportProgress } from '../../src/types/base'
 import type {
  MemberActivity,
  MemberNameHistory,
@@ -252,6 +252,20 @@ interface FilterResult {
  }
 }

+// 分页信息类型
+interface PaginationInfo {
+  page: number
+  pageSize: number
+  totalBlocks: number
+  totalHits: number
+  hasMore: boolean
+}
+
+// 带分页的筛选结果类型
+interface FilterResultWithPagination extends FilterResult {
+  pagination: PaginationInfo
+}
+
 interface AIConversation {
  id: string
  sessionId: string
@@ -348,15 +362,36 @@ interface AiApi {
  getMessages: (conversationId: string) => Promise<AIMessage[]>
  deleteMessage: (messageId: string) => Promise<boolean>
  showAiLogFile: () => Promise<{ success: boolean; path?: string; error?: string }>
-  // 自定义筛选
+  // 自定义筛选（支持分页）
  filterMessagesWithContext: (
    sessionId: string,
    keywords?: string[],
    timeFilter?: TimeFilter,
    senderIds?: number[],
+    contextSize?: number,
+    page?: number,
+    pageSize?: number
+  ) => Promise<FilterResultWithPagination>
+  getMultipleSessionsMessages: (
+    sessionId: string,
+    chatSessionIds: number[],
+    page?: number,
+    pageSize?: number
+  ) => Promise<FilterResultWithPagination>
+  // 导出筛选结果到文件
+  exportFilterResultToFile: (params: {
+    sessionId: string
+    sessionName: string
+    outputDir: string
+    filterMode: 'condition' | 'session'
+    keywords?: string[]
+    timeFilter?: TimeFilter
+    senderIds?: number[]
    contextSize?: number
-  ) => Promise<FilterResult>
-  getMultipleSessionsMessages: (sessionId: string, chatSessionIds: number[]) => Promise<FilterResult>
+    chatSessionIds?: number[]
+  }) => Promise<{ success: boolean; filePath?: string; error?: string }>
+  // 监听导出进度
+  onExportProgress: (callback: (progress: ExportProgress) => void) => () => void
 }

 // LLM 相关类型
--- a/src/components/analysis/Filter/FilterTab.vue
+++ b/src/components/analysis/Filter/FilterTab.vue
@@ -6,10 +6,13 @@
 * 支持两种互斥的筛选模式：
 * 1. 条件筛选：按关键词、时间、发送者筛选，并自动扩展上下文
 * 2. 会话筛选：直接选择已有的会话（对话段落）
+ *
+ * 支持分页加载，避免大数据量时内存溢出
 */

 import { ref, computed, watch, toRaw } from 'vue'
 import { useI18n } from 'vue-i18n'
+import { useToast } from '@nuxt/ui/runtime/composables/useToast.js'
 import { useSessionStore } from '@/stores/session'
 import ConditionPanel from './ConditionPanel.vue'
 import SessionPanel from './SessionPanel.vue'
@@ -18,6 +21,7 @@ import FilterHistory from './FilterHistory.vue'
 import LocalAnalysisModal from './LocalAnalysisModal.vue'

 const { t } = useI18n()
+const toast = useToast()
 const sessionStore = useSessionStore()

 // 筛选模式：'condition' | 'session'
@@ -55,7 +59,16 @@ interface FilterMessage {
  isHit: boolean
 }

-// 筛选结果
+// 分页信息类型
+interface PaginationInfo {
+  page: number
+  pageSize: number
+  totalBlocks: number
+  totalHits: number
+  hasMore: boolean
+}
+
+// 筛选结果（带分页）
 const filterResult = ref<{
  blocks: Array<{
    startTs: number
@@ -68,13 +81,18 @@ const filterResult = ref<{
    hitMessages: number
    totalChars: number
  }
+  pagination: PaginationInfo
 } | null>(null)

 // 加载状态
 const isFiltering = ref(false)
+const isLoadingMore = ref(false)
 const showHistory = ref(false)
 const showAnalysisModal = ref(false)

+// 每页块数
+const PAGE_SIZE = 50
+
 // 估算 Token 数
 // 中文：1 字符 ≈ 1.5 token（因为中文分词后每个字符可能产生 1-2 个 token）
 // 考虑到消息格式（时间、发送人等），使用 1.5 作为估算系数
@@ -109,7 +127,7 @@ const canExecuteFilter = computed(() => {
  }
 })

-// 执行筛选
+// 执行筛选（首次加载）
 async function executeFilter() {
  const sessionId = sessionStore.currentSessionId
  if (!sessionId) return
@@ -133,14 +151,16 @@ async function executeFilter() {
        keywords,
        timeFilter,
        senderIds,
-        contextSize
+        contextSize,
+        1, // 第一页
+        PAGE_SIZE
      )
      filterResult.value = result
    } else {
      // 会话筛选模式
      if (selectedSessionIds.value.length === 0) return
      const sessionIds = [...toRaw(selectedSessionIds.value)]
-      const result = await window.aiApi.getMultipleSessionsMessages(sessionId, sessionIds)
+      const result = await window.aiApi.getMultipleSessionsMessages(sessionId, sessionIds, 1, PAGE_SIZE)
      filterResult.value = result
    }
  } catch (error) {
@@ -150,69 +170,159 @@ async function executeFilter() {
  }
 }

-// 导出投喂包（Markdown 格式）
+// 加载更多块
+async function loadMoreBlocks() {
+  const sessionId = sessionStore.currentSessionId
+  if (!sessionId || !filterResult.value || !filterResult.value.pagination.hasMore || isLoadingMore.value) return
+
+  isLoadingMore.value = true
+  const nextPage = filterResult.value.pagination.page + 1
+
+  try {
+    let result
+    if (filterMode.value === 'condition') {
+      const rawFilter = toRaw(conditionFilter.value)
+      const keywords = rawFilter.keywords.length > 0 ? [...rawFilter.keywords] : undefined
+      const timeFilter = rawFilter.timeRange
+        ? { startTs: rawFilter.timeRange.start, endTs: rawFilter.timeRange.end }
+        : undefined
+      const senderIds = rawFilter.senderIds.length > 0 ? [...rawFilter.senderIds] : undefined
+      const contextSize = rawFilter.contextSize
+
+      result = await window.aiApi.filterMessagesWithContext(
+        sessionId,
+        keywords,
+        timeFilter,
+        senderIds,
+        contextSize,
+        nextPage,
+        PAGE_SIZE
+      )
+    } else {
+      const sessionIds = [...toRaw(selectedSessionIds.value)]
+      result = await window.aiApi.getMultipleSessionsMessages(sessionId, sessionIds, nextPage, PAGE_SIZE)
+    }
+
+    // 合并新加载的块到现有结果
+    if (result && result.blocks.length > 0) {
+      filterResult.value = {
+        blocks: [...filterResult.value.blocks, ...result.blocks],
+        stats: filterResult.value.stats, // 统计信息保持不变（第一页已获取）
+        pagination: result.pagination,
+      }
+    }
+  } catch (error) {
+    console.error('加载更多失败:', error)
+  } finally {
+    isLoadingMore.value = false
+  }
+}
+
+// 导出状态
+const isExporting = ref(false)
+const exportProgress = ref<{
+  percentage: number
+  message: string
+} | null>(null)
+
+// 监听导出进度
+let unsubscribeExportProgress: (() => void) | null = null
+
+function startExportProgressListener() {
+  unsubscribeExportProgress = window.aiApi.onExportProgress((progress) => {
+    exportProgress.value = {
+      percentage: progress.percentage,
+      message: progress.message,
+    }
+    // 如果完成或出错，不再需要监听
+    if (progress.stage === 'done' || progress.stage === 'error') {
+      exportProgress.value = null
+    }
+  })
+}
+
+function stopExportProgressListener() {
+  if (unsubscribeExportProgress) {
+    unsubscribeExportProgress()
+    unsubscribeExportProgress = null
+  }
+  exportProgress.value = null
+}
+
+// 导出投喂包（后端生成 Markdown 文件，支持大数据量）
 async function exportFeedPack() {
  if (!filterResult.value || filterResult.value.blocks.length === 0) return

+  const sessionId = sessionStore.currentSessionId
+  if (!sessionId) return
+
  const sessionInfo = sessionStore.currentSession
  const sessionName = sessionInfo?.name || '未知会话'

-  // 构建 Markdown 内容
-  let markdown = `# ${sessionName} - 聊天记录筛选结果\n\n`
-  markdown += `> 导出时间: ${new Date().toLocaleString()}\n\n`
+  // 让用户选择保存目录
+  const dialogResult = await window.api.dialog.showOpenDialog({
+    title: '选择保存目录',
+    properties: ['openDirectory', 'createDirectory'],
+  })
+  if (dialogResult.canceled || !dialogResult.filePaths[0]) return
+  const outputDir = dialogResult.filePaths[0]

-  // 筛选条件摘要
-  markdown += `## 筛选条件\n\n`
-  if (filterMode.value === 'condition') {
-    if (conditionFilter.value.keywords.length > 0) {
-      markdown += `- 关键词: ${conditionFilter.value.keywords.join(', ')}\n`
+  isExporting.value = true
+  exportProgress.value = { percentage: 0, message: t('analysis.filter.exportPreparing') }
+
+  // 开始监听进度
+  startExportProgressListener()
+
+  try {
+    // 构建导出参数
+    const rawFilter = toRaw(conditionFilter.value)
+    const exportParams = {
+      sessionId,
+      sessionName,
+      outputDir,
+      filterMode: filterMode.value,
+      keywords: rawFilter.keywords.length > 0 ? [...rawFilter.keywords] : undefined,
+      timeFilter: rawFilter.timeRange
+        ? { startTs: rawFilter.timeRange.start, endTs: rawFilter.timeRange.end }
+        : undefined,
+      senderIds: rawFilter.senderIds.length > 0 ? [...rawFilter.senderIds] : undefined,
+      contextSize: rawFilter.contextSize,
+      chatSessionIds:
+        filterMode.value === 'session' ? [...toRaw(selectedSessionIds.value)] : undefined,
    }
-    if (conditionFilter.value.timeRange) {
-      const start = new Date(conditionFilter.value.timeRange.start * 1000).toLocaleString()
-      const end = new Date(conditionFilter.value.timeRange.end * 1000).toLocaleString()
-      markdown += `- 时间范围: ${start} ~ ${end}\n`
+
+    // 调用后端导出
+    const exportResult = await window.aiApi.exportFilterResultToFile(exportParams)
+
+    if (exportResult.success && exportResult.filePath) {
+      // 导出成功
+      toast.add({
+        title: t('analysis.filter.exportSuccess'),
+        description: exportResult.filePath,
+        color: 'green',
+        icon: 'i-heroicons-check-circle',
+      })
+    } else {
+      // 导出失败
+      toast.add({
+        title: t('analysis.filter.exportFailed'),
+        description: exportResult.error || t('common.error.unknown'),
+        color: 'red',
+        icon: 'i-heroicons-x-circle',
+      })
    }
-    markdown += `- 上下文扩展: ±${conditionFilter.value.contextSize} 条消息\n`
-  } else {
-    markdown += `- 模式: 会话筛选\n`
-    markdown += `- 选中会话数: ${selectedSessionIds.value.length}\n`
+  } catch (error) {
+    console.error('导出失败:', error)
+    toast.add({
+      title: t('analysis.filter.exportFailed'),
+      description: String(error),
+      color: 'red',
+      icon: 'i-heroicons-x-circle',
+    })
+  } finally {
+    stopExportProgressListener()
+    isExporting.value = false
  }
-
-  // 统计信息
-  markdown += `\n## 统计信息\n\n`
-  markdown += `- 消息总数: ${filterResult.value.stats.totalMessages}\n`
-  markdown += `- 命中消息: ${filterResult.value.stats.hitMessages}\n`
-  markdown += `- 字符数: ${filterResult.value.stats.totalChars}\n`
-  markdown += `- 预估 Token: ${estimatedTokens.value}\n`
-
-  // 对话内容
-  markdown += `\n## 对话内容\n\n`
-
-  for (let i = 0; i < filterResult.value.blocks.length; i++) {
-    const block = filterResult.value.blocks[i]
-    const startTime = new Date(block.startTs * 1000).toLocaleString()
-    const endTime = new Date(block.endTs * 1000).toLocaleString()
-
-    markdown += `### 对话块 ${i + 1} (${startTime} ~ ${endTime})\n\n`
-
-    for (const msg of block.messages) {
-      const time = new Date(msg.timestamp * 1000).toLocaleTimeString()
-      const hitMark = msg.isHit ? ' ⭐' : ''
-      const content = msg.content || '[非文本消息]'
-      markdown += `${time} ${msg.senderName}${hitMark}: ${content}\n`
-    }
-  }
-
-  // 创建并下载文件
-  const blob = new Blob([markdown], { type: 'text/markdown;charset=utf-8' })
-  const url = URL.createObjectURL(blob)
-  const a = document.createElement('a')
-  a.href = url
-  a.download = `${sessionName}_筛选结果_${Date.now()}.md`
-  document.body.appendChild(a)
-  a.click()
-  document.body.removeChild(a)
-  URL.revokeObjectURL(url)
 }

 // 打开本地 AI 分析
@@ -313,21 +423,45 @@ function loadHistoryCondition(condition: {
        <PreviewPanel
          :result="filterResult"
          :is-loading="isFiltering"
+          :is-loading-more="isLoadingMore"
          :estimated-tokens="estimatedTokens"
          :token-status="tokenStatus"
+          @load-more="loadMoreBlocks"
        />

        <!-- 底部操作按钮 -->
        <div
          v-if="filterResult && filterResult.blocks.length > 0"
-          class="flex-none flex items-center justify-end gap-3 px-4 py-3 border-t border-gray-200 dark:border-gray-700 bg-gray-50 dark:bg-gray-800"
+          class="flex-none flex flex-col gap-2 px-4 py-3 border-t border-gray-200 dark:border-gray-700 bg-gray-50 dark:bg-gray-800"
        >
-          <UButton variant="outline" icon="i-heroicons-document-arrow-down" @click="exportFeedPack">
-            {{ t('analysis.filter.export') }}
-          </UButton>
-          <UButton color="primary" icon="i-heroicons-sparkles" @click="openLocalAnalysis">
-            {{ t('analysis.filter.localAnalysis') }}
-          </UButton>
+          <!-- 导出进度条 -->
+          <div v-if="isExporting && exportProgress" class="w-full">
+            <div class="flex items-center justify-between text-sm text-gray-600 dark:text-gray-400 mb-1">
+              <span>{{ exportProgress.message }}</span>
+              <span>{{ exportProgress.percentage }}%</span>
+            </div>
+            <div class="w-full h-2 bg-gray-200 dark:bg-gray-700 rounded-full overflow-hidden">
+              <div
+                class="h-full bg-primary-500 transition-all duration-300"
+                :style="{ width: `${exportProgress.percentage}%` }"
+              />
+            </div>
+          </div>
+          <!-- 操作按钮 -->
+          <div class="flex items-center justify-end gap-3">
+            <UButton
+              variant="outline"
+              icon="i-heroicons-document-arrow-down"
+              :loading="isExporting"
+              :disabled="isExporting"
+              @click="exportFeedPack"
+            >
+              {{ t('analysis.filter.export') }}
+            </UButton>
+            <UButton color="primary" icon="i-heroicons-sparkles" @click="openLocalAnalysis">
+              {{ t('analysis.filter.localAnalysis') }}
+            </UButton>
+          </div>
        </div>
      </div>
    </div>
--- a/src/components/analysis/Filter/LocalAnalysisModal.vue
+++ b/src/components/analysis/Filter/LocalAnalysisModal.vue
@@ -56,6 +56,15 @@ const props = defineProps<{

 const open = defineModel<boolean>('open', { default: false })

+// 数据量阈值（超过此数量时提示数据量过大）
+const DATA_TOO_LARGE_THRESHOLD = 5000
+
+// 检查数据量是否过大
+const isDataTooLarge = computed(() => {
+  if (!props.filterResult) return false
+  return props.filterResult.stats.totalMessages > DATA_TOO_LARGE_THRESHOLD
+})
+
 // 分析模式：'preset' | 'custom'
 const analysisMode = ref<'preset' | 'custom'>('preset')

@@ -224,6 +233,24 @@ watch(open, (val) => {
            </div>
          </div>

+          <!-- 数据量过大警告 -->
+          <div
+            v-if="isDataTooLarge"
+            class="p-3 bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-800 rounded-lg"
+          >
+            <div class="flex items-start gap-2">
+              <UIcon name="i-heroicons-exclamation-triangle" class="w-5 h-5 text-red-500 shrink-0 mt-0.5" />
+              <div class="text-sm">
+                <p class="font-medium text-red-700 dark:text-red-400">
+                  {{ t('analysis.filter.dataTooLarge') }}
+                </p>
+                <p class="text-red-600 dark:text-red-500 mt-1">
+                  {{ t('analysis.filter.dataTooLargeThreshold', { count: DATA_TOO_LARGE_THRESHOLD }) }}
+                </p>
+              </div>
+            </div>
+          </div>
+
          <!-- 分析模式切换 -->
          <div class="flex items-center gap-1 p-1 bg-gray-100 dark:bg-gray-800 rounded-lg w-fit">
            <button
@@ -295,7 +322,7 @@ watch(open, (val) => {
            <UButton
              color="primary"
              :loading="isAnalyzing"
-              :disabled="isAnalyzing || (analysisMode === 'custom' && !customPrompt.trim())"
+              :disabled="isAnalyzing || isDataTooLarge || (analysisMode === 'custom' && !customPrompt.trim())"
              @click="executeAnalysis"
            >
              <UIcon name="i-heroicons-sparkles" class="w-4 h-4 mr-1" />
--- a/src/components/analysis/Filter/PreviewPanel.vue
+++ b/src/components/analysis/Filter/PreviewPanel.vue
@@ -3,6 +3,7 @@
 * 预览面板
 * 左右结构：左侧对话块列表（虚拟滚动），右侧消息内容（复用 MessageList）
 * 支持连续滚动：滚动到底部时自动加载下一个对话块
+ * 支持分页加载：滚动到左侧列表底部时触发加载更多
 */

 import { computed, ref, watch, nextTick } from 'vue'
@@ -14,6 +15,15 @@ import type { ChatRecordMessage } from '@/types/format'

 const { t } = useI18n()

+// 分页信息类型
+interface PaginationInfo {
+  page: number
+  pageSize: number
+  totalBlocks: number
+  totalHits: number
+  hasMore: boolean
+}
+
 // Props
 const props = defineProps<{
  result: {
@@ -41,12 +51,19 @@ const props = defineProps<{
      hitMessages: number
      totalChars: number
    }
+    pagination?: PaginationInfo
  } | null
  isLoading: boolean
+  isLoadingMore?: boolean
  estimatedTokens: number
  tokenStatus: 'green' | 'yellow' | 'red'
 }>()

+// Emits
+const emit = defineEmits<{
+  (e: 'load-more'): void
+}>()
+
 // 当前选中的对话块索引（用于左侧高亮和右侧显示）
 const selectedBlockIndex = ref(0)

@@ -231,6 +248,19 @@ watch(pendingScrollToMessageId, async (messageId) => {
    }, 100)
  }
 })
+
+// 处理左侧块列表滚动，接近底部时自动加载更多
+function handleBlockListScroll(event: Event) {
+  const target = event.target as HTMLElement
+  if (!target || !props.result?.pagination?.hasMore || props.isLoadingMore) return
+
+  // 距离底部 100px 时触发加载
+  const threshold = 100
+  const { scrollTop, scrollHeight, clientHeight } = target
+  if (scrollHeight - scrollTop - clientHeight < threshold) {
+    emit('load-more')
+  }
+}
 </script>

 <template>
@@ -244,7 +274,12 @@ watch(pendingScrollToMessageId, async (messageId) => {
        <div class="flex items-center gap-6 text-sm">
          <span class="text-gray-600 dark:text-gray-400">
            {{ t('analysis.filter.stats.blocks') }}:
-            <span class="font-medium text-gray-900 dark:text-white">{{ result.blocks.length }}</span>
+            <span class="font-medium text-gray-900 dark:text-white">
+              {{ result.blocks.length }}
+              <template v-if="result.pagination && result.pagination.totalBlocks > result.blocks.length">
+                / {{ result.pagination.totalBlocks }}
+              </template>
+            </span>
          </span>
          <span class="text-gray-600 dark:text-gray-400">
            {{ t('analysis.filter.stats.messages') }}:
@@ -252,7 +287,9 @@ watch(pendingScrollToMessageId, async (messageId) => {
          </span>
          <span class="text-gray-600 dark:text-gray-400">
            {{ t('analysis.filter.stats.hits') }}:
-            <span class="font-medium text-primary-500">{{ result.stats.hitMessages }}</span>
+            <span class="font-medium text-primary-500">
+              {{ result.pagination?.totalHits ?? result.stats.hitMessages }}
+            </span>
          </span>
          <span class="text-gray-600 dark:text-gray-400">
            {{ t('analysis.filter.stats.chars') }}:
@@ -326,11 +363,15 @@ watch(pendingScrollToMessageId, async (messageId) => {
        >
          <div class="flex-none px-3 py-2 border-b border-gray-200 dark:border-gray-700">
            <span class="text-sm font-medium text-gray-700 dark:text-gray-300">
-              {{ t('analysis.filter.stats.blocks') }} ({{ result.blocks.length }})
+              {{ t('analysis.filter.stats.blocks') }}
+              ({{ result.blocks.length
+              }}<template v-if="result.pagination && result.pagination.totalBlocks > result.blocks.length"
+                >/{{ result.pagination.totalBlocks }}</template
+              >)
            </span>
          </div>

-          <div ref="blockListRef" class="flex-1 overflow-y-auto">
+          <div ref="blockListRef" class="flex-1 overflow-y-auto" @scroll="handleBlockListScroll">
            <div :style="{ height: `${blockVirtualizer.getTotalSize()}px`, position: 'relative' }">
              <div
                v-for="virtualItem in virtualBlocks"
@@ -381,6 +422,28 @@ watch(pendingScrollToMessageId, async (messageId) => {
                </div>
              </div>
            </div>
+
+            <!-- 加载更多提示 -->
+            <div
+              v-if="result.pagination?.hasMore"
+              class="py-3 text-center text-sm text-gray-500 dark:text-gray-400 border-t border-gray-100 dark:border-gray-700"
+            >
+              <template v-if="isLoadingMore">
+                <UIcon name="i-heroicons-arrow-path" class="w-4 h-4 animate-spin inline mr-1" />
+                {{ t('common.loading') }}
+              </template>
+              <template v-else>
+                <button class="text-primary-500 hover:text-primary-600" @click="emit('load-more')">
+                  {{ t('analysis.filter.loadMore') }}
+                </button>
+              </template>
+            </div>
+            <div
+              v-else-if="result.pagination && result.blocks.length >= result.pagination.totalBlocks"
+              class="py-3 text-center text-xs text-gray-400 dark:text-gray-500"
+            >
+              {{ t('analysis.filter.allLoaded') }}
+            </div>
          </div>
        </div>

--- a/src/i18n/locales/en-US/analysis.json
+++ b/src/i18n/locales/en-US/analysis.json
@@ -99,6 +99,13 @@
    "editablePromptLabel": "Prompt (editable)",
    "analyzing": "Analyzing...",
    "startAnalysis": "Start Analysis",
-    "analysisResult": "Analysis Result"
+    "analysisResult": "Analysis Result",
+    "loadMore": "Load More",
+    "allLoaded": "All loaded",
+    "dataTooLarge": "Data too large for AI analysis. Please narrow your filter.",
+    "dataTooLargeThreshold": "Current data exceeds {count} messages",
+    "exportSuccess": "Export successful",
+    "exportFailed": "Export failed",
+    "exportPreparing": "Preparing export..."
  }
 }
--- a/src/i18n/locales/en-US/common.json
+++ b/src/i18n/locales/en-US/common.json
@@ -16,7 +16,8 @@
  "noData": "No data",
  "error": {
    "general": "Operation failed, please try again",
-    "network": "Network error"
+    "network": "Network error",
+    "unknown": "Unknown error"
  },
  "attachment": {
    "image": "Image",
--- a/src/i18n/locales/zh-CN/analysis.json
+++ b/src/i18n/locales/zh-CN/analysis.json
@@ -99,6 +99,13 @@
    "editablePromptLabel": "提示词（可临时修改）",
    "analyzing": "分析中...",
    "startAnalysis": "开始分析",
-    "analysisResult": "分析结果"
+    "analysisResult": "分析结果",
+    "loadMore": "加载更多",
+    "allLoaded": "已加载全部",
+    "dataTooLarge": "数据量过大，无法进行 AI 分析。请缩小筛选范围。",
+    "dataTooLargeThreshold": "当前数据超过 {count} 条消息",
+    "exportSuccess": "导出成功",
+    "exportFailed": "导出失败",
+    "exportPreparing": "正在准备导出..."
  }
 }
--- a/src/i18n/locales/zh-CN/common.json
+++ b/src/i18n/locales/zh-CN/common.json
@@ -16,7 +16,8 @@
  "noData": "暂无数据",
  "error": {
    "general": "操作失败，请重试",
-    "network": "网络错误"
+    "network": "网络错误",
+    "unknown": "未知错误"
  },
  "attachment": {
    "image": "图片",
--- a/src/types/base.ts
+++ b/src/types/base.ts
@@ -250,6 +250,17 @@ export interface ImportProgress {
  messagesProcessed?: number
 }

+/**
+ * 导出进度
+ */
+export interface ExportProgress {
+  stage: 'preparing' | 'exporting' | 'done' | 'error'
+  currentBlock: number
+  totalBlocks: number
+  percentage: number // 0-100
+  message: string
+}
+
 /**
 * 导入结果
 */