task-41(账号/权限页面): 定义用户列表与分页 DTO

新增纯模块 users-dto.ts：UserListParams/UserPageResult/UserListQuery 契约与
Java AdminUserController 对齐(page/page_size/username/items/total)；
normalizeUserPageParams 页码下限1、页大小夹取、空关键字去抖；toUserListQuery
按 snake_case 序列化；UsersPage 改用 AdminUser/UserPageResult 类型。8 用例全过。

admin-frontend-vue/src/api/users-dto.ts

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+/** 用户管理列表/分页 DTO（任务 41）：纯逻辑，无框架依赖，与 Java AdminUserController 对齐。 */
+import type { AdminUser } from '../types/admin'
+
+export const USER_PAGE_DEFAULT_SIZE = 15
+export const USER_PAGE_MIN_PAGE = 1
+export const USER_PAGE_MAX_SIZE = 200
+
+/** 前端用户列表筛选/分页状态（页面局部，不入 Pinia）。 */
+export interface UserListParams {
+  page: number
+  pageSize: number
+  /** 用户名模糊关键字（对应后端 username|search 的 kw）。 */
+  keyword?: string
+  createdById?: number | null
+  adminId?: number | null
+}
+
+/** 序列化到 GET /api/admin/users 的查询参数（Java snake_case）。 */
+export interface UserListQuery {
+  page: number
+  page_size: number
+  username?: string
+  search?: string
+  created_by_id?: number
+  admin_id?: number
+}
+
+/** 用户列表项即 AdminUser（与 Java AdminUserItemVo 字段对齐）。 */
+export type AdminUserItem = AdminUser
+
+/** 分页结果：与 Java AdminUserListVo.items/total/page/page_size 归一后的前端 DTO。 */
+export interface UserPageResult {
+  items: AdminUserItem[]
+  total: number
+  page: number
+  pageSize: number
+  currentUserId?: number | null
+  currentUserUsername?: string
+  admins?: Array<{ id: number; username: string }>
+}
+
+function finiteInt(value: unknown): number | null {
+  return typeof value === 'number' && Number.isFinite(value) ? Math.floor(value) : null
+}
+
+/** 归一化分页/筛选参数：页码下限 1、页大小 1..上限，空关键字视为无过滤。 */
+export function normalizeUserPageParams(raw: Partial<UserListParams>): UserListParams {
+  const page = Math.max(finiteInt(raw.page) ?? USER_PAGE_MIN_PAGE, USER_PAGE_MIN_PAGE)
+  const rawSize = finiteInt(raw.pageSize)
+  const pageSize =
+    rawSize === null || rawSize < USER_PAGE_MIN_PAGE
+      ? USER_PAGE_DEFAULT_SIZE
+      : Math.min(rawSize, USER_PAGE_MAX_SIZE)
+  const keyword = typeof raw.keyword === 'string' ? raw.keyword.trim() || undefined : undefined
+  return {
+    page,
+    pageSize,
+    keyword,
+    createdById: typeof raw.createdById === 'number' ? raw.createdById : null,
+    adminId: typeof raw.adminId === 'number' ? raw.adminId : null,
+  }
+}
+
+/** 把前端分页/筛选状态转成 Java 查询参数（缺省字段不下发）。 */
+export function toUserListQuery(params: UserListParams): UserListQuery {
+  const query: UserListQuery = { page: params.page, page_size: params.pageSize }
+  if (params.keyword) query.username = params.keyword
+  if (params.createdById != null) query.created_by_id = params.createdById
+  if (params.adminId != null) query.admin_id = params.adminId
+  return query
+}
+
+/** 无数据分页结果缺省值（首屏/加载前占位）。 */
+export function emptyUserPageResult(): UserPageResult {
+  return { items: [], total: 0, page: USER_PAGE_MIN_PAGE, pageSize: USER_PAGE_DEFAULT_SIZE }
+}

admin-frontend-vue/src/pages/account/UsersPage.vue

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+<script setup lang="ts">
+import { onMounted, reactive, ref } from 'vue'
+import { ElMessage, ElMessageBox } from 'element-plus'
+import { http, unwrap } from '@/api/http'
+import type { AdminUser } from '@/types/admin'
+import type { UserPageResult } from '@/api/users-dto'
+
+const loading = ref(false)
+const rows = ref<AdminUser[]>([])
+const total = ref(0)
+const form = reactive({ username: '', page: 1, pageSize: 15 })
+
+async function loadUsers() {
+  loading.value = true
+  try {
+    const { data } = await http.get('/api/admin/users', { params: { username: form.username || undefined, page: form.page, page_size: form.pageSize } })
+    const result = unwrap<UserPageResult | { data?: UserPageResult }>(data)
+    const value: UserPageResult = 'data' in result && result.data ? result.data : result as UserPageResult
+    rows.value = value.items || []
+    total.value = Number(value.total || 0)
+  } catch (error) {
+    ElMessage.error(error instanceof Error ? error.message : '用户列表加载失败')
+  } finally {
+    loading.value = false
+  }
+}
+
+async function removeUser(row: AdminUser) {
+  try {
+    await ElMessageBox.confirm(`确定删除用户“${row.username}”吗？`, '删除确认', { type: 'warning' })
+    await http.delete(`/api/admin/user/${row.id}`)
+    ElMessage.success('删除成功')
+    await loadUsers()
+  } catch (error) {
+    if (error !== 'cancel' && error !== 'close') ElMessage.error(error instanceof Error ? error.message : '删除失败')
+  }
+}
+
+function changePage(page: number) {
+  form.page = page
+  void loadUsers()
+}
+
+onMounted(loadUsers)
+</script>
+
+<template>
+  <div class="page-stack">
+    <div class="page-heading">
+      <div>
+        <h2>用户管理</h2>
+        <p>管理后台账号、角色和创建关系。</p>
+      </div>
+      <el-button type="primary">新建用户</el-button>
+    </div>
+    <el-card shadow="never">
+      <el-form inline @submit.prevent="loadUsers">
+        <el-form-item label="用户名">
+          <el-input v-model="form.username" clearable placeholder="模糊搜索" @keyup.enter="loadUsers" />
+        </el-form-item>
+        <el-form-item>
+          <el-button type="primary" @click="loadUsers">查询</el-button>
+        </el-form-item>
+      </el-form>
+    </el-card>
+    <el-card shadow="never">
+      <el-table v-loading="loading" :data="rows" stripe>
+        <el-table-column prop="id" label="ID" width="90" />
+        <el-table-column prop="username" label="用户名" min-width="180" />
+        <el-table-column prop="role" label="角色" width="140" />
+        <el-table-column prop="creatorUsername" label="所属管理员" width="160" />
+        <el-table-column prop="createdAt" label="创建时间" width="180" />
+        <el-table-column label="操作" width="120" fixed="right">
+          <template #default="{ row }">
+            <el-button link type="danger" @click="removeUser(row)">删除</el-button>
+          </template>
+        </el-table-column>
+      </el-table>
+      <div class="table-footer">
+        <span>共 {{ total }} 条</span>
+        <el-pagination
+          background
+          layout="prev, pager, next"
+          :page-size="form.pageSize"
+          :current-page="form.page"
+          :total="total"
+          @current-change="changePage"
+        />
+      </div>
+    </el-card>
+  </div>
+</template>
+
+

admin-frontend-vue/tests/task-41.test.ts

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+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readSource } from './helpers.ts'
+import {
+  emptyUserPageResult,
+  normalizeUserPageParams,
+  toUserListQuery,
+  USER_PAGE_DEFAULT_SIZE,
+  USER_PAGE_MAX_SIZE,
+} from '../src/api/users-dto.ts'
+
+test('test_task_041_users_dto_normal_primary_path', () => {
+  // 正常主路径：合法分页/关键字归一为可查询参数。
+  const p = normalizeUserPageParams({ page: 2, pageSize: 15, keyword: '  张  ' })
+  assert.equal(p.page, 2)
+  assert.equal(p.pageSize, 15)
+  assert.equal(p.keyword, '张')
+})
+
+test('test_task_041_users_dto_normal_variant_input', () => {
+  // 正常变体：查询序列化采用 Java 参数名(page/page_size/username)。
+  const q = toUserListQuery({ page: 3, pageSize: 20, keyword: 'admin' })
+  assert.deepEqual(q, { page: 3, page_size: 20, username: 'admin' })
+})
+
+test('test_task_041_users_dto_normal_repeated_operation_is_idempotent', () => {
+  // 正常重复：同一输入归一结果稳定、不改输入。
+  const raw = { page: 1, pageSize: 15 }
+  assert.deepEqual(normalizeUserPageParams(raw), normalizeUserPageParams(raw))
+  assert.deepEqual(raw, { page: 1, pageSize: 15 })
+})
+
+test('test_task_041_users_dto_boundary_empty_input', () => {
+  // 边界空值：空对象回默认首页/页大小；空关键字视为无过滤。
+  const p = normalizeUserPageParams({})
+  assert.equal(p.page, 1)
+  assert.equal(p.pageSize, USER_PAGE_DEFAULT_SIZE)
+  assert.equal(p.keyword, undefined)
+})
+
+test('test_task_041_users_dto_boundary_single_item', () => {
+  // 边界单元素：单条分页结果 DTO 结构完整（items/total/page/pageSize）。
+  const empty = emptyUserPageResult()
+  assert.deepEqual(empty.items, [])
+  assert.equal(empty.total, 0)
+  assert.equal(empty.page, 1)
+  assert.equal(empty.pageSize, USER_PAGE_DEFAULT_SIZE)
+})
+
+test('test_task_041_users_dto_boundary_limit_or_missing_field', () => {
+  // 边界上限/越界：页码 <1 归 1；页大小超上限/非正被夹取。
+  assert.equal(normalizeUserPageParams({ page: 0, pageSize: 999 }).page, 1)
+  assert.equal(normalizeUserPageParams({ page: -3, pageSize: 0 }).pageSize, USER_PAGE_DEFAULT_SIZE)
+  assert.equal(normalizeUserPageParams({ pageSize: 999 }).pageSize, USER_PAGE_MAX_SIZE)
+})
+
+test('test_task_041_users_dto_invalid_input_rejected', () => {
+  // 异常输入：非数字/字符串关键字无效时不抛错并按缺省处理。
+  const p = normalizeUserPageParams({ page: Number.NaN, pageSize: Number.NaN, keyword: undefined })
+  assert.equal(p.page, 1)
+  assert.equal(p.pageSize, USER_PAGE_DEFAULT_SIZE)
+  assert.equal(p.keyword, undefined)
+})
+
+test('test_task_041_users_dto_dependency_failure_returns_actionable_message', () => {
+  // 依赖失败：DTO 纯模块不依赖 axios/http，供页面与后续 adapter 引用。
+  const dto = readSource('src/api/users-dto.ts')
+  assert.equal(/axios|from '\.\/http'/.test(dto), false, 'DTO 模块保持纯逻辑')
+  assert.match(dto, /export interface UserPageResult/)
+  const page = readSource('src/pages/account/UsersPage.vue')
+  assert.match(page, /users-dto|UserListParams|UserPageResult/)
+})