feat(report): PDF生成后才标记已完成，后台增加PDF查看下载

- ReportGenerationService: 结论持久化后保持Status=3，不再设置Status=4
- PdfGenerationService: PDF生成+COS上传成功后设置Status=4和CompleteTime
- ReportQueueConsumer: PDF生成失败时更新Status=5（生成失败）
- AssessmentRecordDto: 增加ReportUrl字段
- AssessmentRecordService: 列表查询增加ReportUrl映射
- Admin.Business实体: AssessmentRecord增加ReportUrl属性
- 前端API类型: AssessmentRecordItem增加reportUrl字段
- 后台记录页面: 增加查看PDF和下载PDF按钮
- Core项目: 增加Tencent.QCloud.Cos.Sdk依赖，支持COS上传

server/MiAssessment/src/MiAssessment.Admin.Business/Entities/AssessmentRecord.cs

@@ -116,6 +116,12 @@ public class AssessmentRecord
     /// </summary>
     public bool IsDeleted { get; set; }
 
+    /// <summary>
+    /// 报告PDF地址
+    /// </summary>
+    [MaxLength(500)]
+    public string? ReportUrl { get; set; }
+
     /// <summary>
     /// 关联的用户
     /// </summary>

server/MiAssessment/src/MiAssessment.Admin.Business/Models/AssessmentRecord/AssessmentRecordDto.cs

@@ -119,4 +119,9 @@ public class AssessmentRecordDto
     /// 创建时间
     /// </summary>
     public DateTime CreateTime { get; set; }
+
+    /// <summary>
+    /// 报告PDF地址
+    /// </summary>
+    public string? ReportUrl { get; set; }
 }

server/MiAssessment/src/MiAssessment.Admin.Business/Services/AssessmentRecordService.cs

@@ -117,7 +117,8 @@ public class AssessmentRecordService : IAssessmentRecordService
                 StartTime = r.StartTime,
                 SubmitTime = r.SubmitTime,
                 CompleteTime = r.CompleteTime,
-                CreateTime = r.CreateTime
+                CreateTime = r.CreateTime,
+                ReportUrl = r.ReportUrl
             })
             .ToListAsync();
 

server/MiAssessment/src/MiAssessment.Admin/admin-web/src/api/business/assessmentRecord.ts

@@ -33,6 +33,7 @@ export interface AssessmentRecordItem {
   submitTime: string | null
   completeTime: string | null
   createTime: string
+  reportUrl: string | null
 }
 
 /** 答案详情 */

server/MiAssessment/src/MiAssessment.Admin/admin-web/src/views/business/assessment/record/index.vue

@@ -108,7 +108,7 @@
           </template>
         </el-table-column>
         <el-table-column prop="createTime" label="创建时间" width="170" align="center" />
-        <el-table-column label="操作" width="280" fixed="right" align="center">
+        <el-table-column label="操作" width="380" fixed="right" align="center">
           <template #default="{ row }">
             <el-button type="primary" link size="small" @click="handleViewDetail(row)">
               <el-icon><View /></el-icon>
@@ -134,6 +134,26 @@
               <el-icon><Monitor /></el-icon>
               网页报告
             </el-button>
+            <el-button
+              v-if="row.reportUrl"
+              type="primary"
+              link
+              size="small"
+              @click="handleViewPdf(row)"
+            >
+              <el-icon><Document /></el-icon>
+              查看PDF
+            </el-button>
+            <el-button
+              v-if="row.reportUrl"
+              type="success"
+              link
+              size="small"
+              @click="handleDownloadPdf(row)"
+            >
+              <el-icon><Download /></el-icon>
+              下载PDF
+            </el-button>
             <el-button
               v-if="row.status === 3 || row.status === 5"
               type="warning"
@@ -649,6 +669,25 @@ function handleViewWebReport(row: AssessmentRecordItem) {
   window.open(url, '_blank')
 }
 
+/** 在新标签页查看 PDF 报告 */
+function handleViewPdf(row: AssessmentRecordItem) {
+  if (row.reportUrl) {
+    window.open(row.reportUrl, '_blank')
+  }
+}
+
+/** 下载 PDF 报告 */
+function handleDownloadPdf(row: AssessmentRecordItem) {
+  if (!row.reportUrl) return
+  const link = document.createElement('a')
+  link.href = row.reportUrl
+  link.download = `测评报告_${row.name}_${row.id}.pdf`
+  link.target = '_blank'
+  document.body.appendChild(link)
+  link.click()
+  document.body.removeChild(link)
+}
+
 /** 表格选择变化 */
 function handleSelectionChange(rows: AssessmentRecordItem[]) {
   state.selectedRows = rows

server/MiAssessment/src/MiAssessment.Api/BackgroundServices/ReportQueueConsumer.cs

@@ -160,8 +160,9 @@ public class ReportQueueConsumer : BackgroundService
             }
             catch (Exception pdfEx)
             {
-                // PDF 生成失败不影响结论数据，仅记录错误日志
+                // PDF 生成失败，更新状态为生成失败
                 _logger.LogError(pdfEx, "PDF 报告生成失败，RecordId: {RecordId}", message.RecordId);
+                await UpdateRecordStatusToFailedAsync(message.RecordId);
             }
         }
         catch (Exception ex)

server/MiAssessment/src/MiAssessment.Core/MiAssessment.Core.csproj

@@ -10,6 +10,8 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageReference Include="PdfSharpCore" Version="1.3.67" />
+    <!-- Tencent Cloud COS SDK -->
+    <PackageReference Include="Tencent.QCloud.Cos.Sdk" Version="5.4.44" />
   </ItemGroup>
 
   <PropertyGroup>

server/MiAssessment/src/MiAssessment.Core/Services/PdfGenerationService.cs

@@ -1,8 +1,13 @@
+using System.Text.Json;
+using COSXML;
+using COSXML.Auth;
+using COSXML.Model.Object;
 using MiAssessment.Core.Interfaces;
 using MiAssessment.Core.Models;
 using MiAssessment.Model.Data;
 using MiAssessment.Model.Entities;
 using MiAssessment.Model.Models.Auth;
+using MiAssessment.Model.Models.Config;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging;
 using PdfSharpCore.Drawing;
@@ -26,27 +31,36 @@ public class PdfGenerationService : IPdfGenerationService
     private const double PageHeightPt = 694.5;
 
     private readonly MiAssessmentDbContext _dbContext;
+    private readonly AdminConfigReadDbContext _adminConfigDbContext;
     private readonly IScreenshotService _screenshotService;
     private readonly ReportSettings _reportSettings;
     private readonly AppSettings _appSettings;
     private readonly ILogger<PdfGenerationService> _logger;
 
+    private const string ReportBasePath = "reports";
+    private const string UploadConfigKey = "uploads";
+
+    private static readonly JsonSerializerOptions JsonOptions = new() { PropertyNameCaseInsensitive = true };
+
     /// <summary>
     /// 初始化 PDF 报告生成服务
     /// </summary>
-    /// <param name="dbContext">数据库上下文</param>
+    /// <param name="dbContext">业务数据库上下文</param>
+    /// <param name="adminConfigDbContext">Admin 配置只读上下文</param>
     /// <param name="screenshotService">截图服务</param>
     /// <param name="reportSettings">报告生成配置</param>
     /// <param name="appSettings">应用程序配置</param>
     /// <param name="logger">日志记录器</param>
     public PdfGenerationService(
         MiAssessmentDbContext dbContext,
+        AdminConfigReadDbContext adminConfigDbContext,
         IScreenshotService screenshotService,
         ReportSettings reportSettings,
         AppSettings appSettings,
         ILogger<PdfGenerationService> logger)
     {
         _dbContext = dbContext;
+        _adminConfigDbContext = adminConfigDbContext;
         _screenshotService = screenshotService;
         _reportSettings = reportSettings;
         _appSettings = appSettings;
@@ -111,21 +125,46 @@ public class PdfGenerationService : IPdfGenerationService
 
         BuildAndSavePdf(imageList, filePath);
 
-        // 6. 更新数据库 ReportUrl
-        var cdnPrefix = _appSettings.CdnPrefix?.TrimEnd('/') ?? string.Empty;
-        var reportUrl = string.IsNullOrEmpty(cdnPrefix)
-            ? $"/reports/{fileName}"
-            : $"{cdnPrefix}/reports/{fileName}";
+        // 6. 尝试上传到 COS
+        string reportUrl;
+        var cosUrl = await UploadToCosAsync(filePath, fileName);
+        if (!string.IsNullOrEmpty(cosUrl))
+        {
+            reportUrl = cosUrl;
+            // COS 上传成功，删除本地文件
+            try
+            {
+                File.Delete(filePath);
+                _logger.LogInformation("本地 PDF 文件已删除: {FilePath}", filePath);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "删除本地 PDF 文件失败: {FilePath}", filePath);
+            }
+        }
+        else
+        {
+            // COS 上传失败，回退到本地路径
+            var cdnPrefix = _appSettings.CdnPrefix?.TrimEnd('/') ?? string.Empty;
+            reportUrl = string.IsNullOrEmpty(cdnPrefix)
+                ? $"/reports/{fileName}"
+                : $"{cdnPrefix}/reports/{fileName}";
+            _logger.LogWarning("COS 上传失败，使用本地路径: {ReportUrl}", reportUrl);
+        }
 
+        // 7. 更新数据库 ReportUrl，设置状态为已完成
         var record = await _dbContext.AssessmentRecords.FindAsync(recordId);
         if (record != null)
         {
             record.ReportUrl = reportUrl;
+            record.Status = 4;
+            record.CompleteTime = DateTime.Now;
+            record.UpdateTime = DateTime.Now;
             await _dbContext.SaveChangesAsync();
         }
 
-        _logger.LogInformation("PDF 报告生成成功，RecordId: {RecordId}，文件路径: {FilePath}",
-            recordId, filePath);
+        _logger.LogInformation("PDF 报告生成成功，RecordId: {RecordId}，ReportUrl: {ReportUrl}",
+            recordId, reportUrl);
     }
 
     /// <summary>
@@ -262,6 +301,104 @@ public class PdfGenerationService : IPdfGenerationService
         return protocol + path;
     }
 
+    /// <summary>
+    /// 上传 PDF 文件到腾讯云 COS
+    /// </summary>
+    /// <param name="filePath">本地文件路径</param>
+    /// <param name="fileName">文件名</param>
+    /// <returns>COS 访问 URL，失败返回 null</returns>
+    private async Task<string?> UploadToCosAsync(string filePath, string fileName)
+    {
+        try
+        {
+            // 从 Admin 库读取上传配置
+            var configValue = await _adminConfigDbContext.AdminConfigs
+                .Where(c => c.ConfigKey == UploadConfigKey)
+                .Select(c => c.ConfigValue)
+                .FirstOrDefaultAsync();
+
+            if (string.IsNullOrEmpty(configValue))
+            {
+                _logger.LogWarning("未找到上传配置，跳过 COS 上传");
+                return null;
+            }
+
+            var setting = JsonSerializer.Deserialize<UploadSetting>(configValue, JsonOptions);
+            if (setting == null || setting.Type != "3")
+            {
+                _logger.LogWarning("上传配置不是腾讯云 COS 类型（当前: {Type}），跳过 COS 上传", setting?.Type);
+                return null;
+            }
+
+            // 验证必要配置
+            if (string.IsNullOrWhiteSpace(setting.Bucket) ||
+                string.IsNullOrWhiteSpace(setting.Region) ||
+                string.IsNullOrWhiteSpace(setting.AccessKeyId) ||
+                string.IsNullOrWhiteSpace(setting.AccessKeySecret) ||
+                string.IsNullOrWhiteSpace(setting.Domain))
+            {
+                _logger.LogWarning("COS 配置不完整，跳过上传");
+                return null;
+            }
+
+            // 构建 COS 对象路径: reports/2026/03/17/report_3_20260317230151.pdf
+            var now = DateTime.Now;
+            var datePath = $"{now.Year}/{now.Month:D2}/{now.Day:D2}";
+            var objectKey = $"{ReportBasePath}/{datePath}/{fileName}";
+
+            // 创建 COS 客户端
+            var cosConfig = new CosXmlConfig.Builder()
+                .IsHttps(true)
+                .SetRegion(setting.Region)
+                .Build();
+
+            var credentialProvider = new DefaultQCloudCredentialProvider(
+                setting.AccessKeyId, setting.AccessKeySecret, 600);
+
+            var cosXml = new CosXmlServer(cosConfig, credentialProvider);
+
+            // 上传文件
+            var fileBytes = await File.ReadAllBytesAsync(filePath);
+            var putRequest = new PutObjectRequest(setting.Bucket, objectKey, fileBytes);
+            putRequest.SetRequestHeader("Content-Type", "application/pdf");
+
+            var result = cosXml.PutObject(putRequest);
+
+            if (result.IsSuccessful())
+            {
+                // 生成访问 URL
+                var domain = setting.Domain!.TrimEnd('/');
+                if (!domain.StartsWith("http://", StringComparison.OrdinalIgnoreCase) &&
+                    !domain.StartsWith("https://", StringComparison.OrdinalIgnoreCase))
+                {
+                    domain = $"https://{domain}";
+                }
+                var cosUrl = $"{domain}/{objectKey}";
+
+                _logger.LogInformation("PDF 上传 COS 成功: {CosUrl}", cosUrl);
+                return cosUrl;
+            }
+
+            _logger.LogError("PDF 上传 COS 失败: {HttpMessage}", result.httpMessage);
+            return null;
+        }
+        catch (COSXML.CosException.CosClientException ex)
+        {
+            _logger.LogError(ex, "COS 客户端错误，上传 PDF 失败");
+            return null;
+        }
+        catch (COSXML.CosException.CosServerException ex)
+        {
+            _logger.LogError(ex, "COS 服务端错误，上传 PDF 失败: {Info}", ex.GetInfo());
+            return null;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "上传 PDF 到 COS 异常");
+            return null;
+        }
+    }
+
     /// <summary>
     /// 使用 PdfSharpCore 将图片列表合并为 PDF 文件并保存
     /// </summary>

server/MiAssessment/src/MiAssessment.Core/Services/ReportGenerationService.cs

@@ -515,7 +515,7 @@ public class ReportGenerationService
     /// - 批量写入新的 AssessmentResult 记录
     /// - 删除该 RecordId 已有的 AssessmentRecordConclusion 记录（硬删除，支持重新生成）
     /// - 从 report_conclusions 模板表复制结论数据到 assessment_record_conclusions
-    /// - 更新 AssessmentRecord 的 Status 为 4（已完成）并设置 CompleteTime
+    /// - 保持 AssessmentRecord 的 Status 为 3（生成中），等待 PDF 生成后再更新为 4（已完成）
     /// 异常时回滚事务，Status 保持为 3（生成中）
     /// </remarks>
     /// <param name="recordId">测评记录ID</param>
@@ -615,12 +615,10 @@ public class ReportGenerationService
                 _logger.LogDebug("复制结论数据，recordId: {RecordId}, 数量: {Count}", recordId, newConclusions.Count);
             }
 
-            // 重新加载测评记录（带跟踪），更新状态为4（已完成）
+            // 重新加载测评记录（带跟踪），保持 Status=3（生成中），等待 PDF 生成后再更新为4
             var record = await _dbContext.AssessmentRecords
                 .FirstAsync(r => r.Id == recordId);
 
-            record.Status = 4;
-            record.CompleteTime = now;
             record.UpdateTime = now;
 
             await _dbContext.SaveChangesAsync();

server/MiAssessment/src/MiAssessment.Infrastructure/Modules/ServiceModule.cs

@@ -161,11 +161,12 @@ public class ServiceModule : Module
         builder.Register(c =>
         {
             var dbContext = c.Resolve<MiAssessmentDbContext>();
+            var adminConfigDbContext = c.Resolve<AdminConfigReadDbContext>();
             var screenshotService = c.Resolve<IScreenshotService>();
             var reportSettings = c.Resolve<Core.Models.ReportSettings>();
             var appSettings = c.Resolve<AppSettings>();
             var logger = c.Resolve<ILogger<PdfGenerationService>>();
-            return new PdfGenerationService(dbContext, screenshotService, reportSettings, appSettings, logger);
+            return new PdfGenerationService(dbContext, adminConfigDbContext, screenshotService, reportSettings, appSettings, logger);
         }).As<IPdfGenerationService>().InstancePerLifetimeScope();
 
         // ========== 小程序测评模块服务注册 ==========