fix: 修复时间显示问题，使用带时区的UTC时间

- 将所有 datetime.utcnow() 替换为 datetime.now(timezone.utc)
- 修复 completed_at, started_at, updated_at, resolved_at 等时间字段
- 修复 JWT token 过期时间计算
- 修复数据导出和ZIP上传时间戳
- 调整README中项目管理和审计报告图片显示比例

README.md

@@ -46,7 +46,7 @@
 
 | 项目管理 | 审计报告 |
 |:---:|:---:|
-| ![项目管理](frontend/public/images/example3.png) | ![审计报告](frontend/public/images/审计报告示例.png) |
+| <img src="frontend/public/images/example3.png" alt="项目管理" width="400"> | <img src="frontend/public/images/审计报告示例.png" alt="审计报告" width="400"> |
 | *GitHub/GitLab 无缝集成* | *专业报告，一键导出* |
 
 ## ✨ 为什么选择我们？

backend/app/api/v1/endpoints/database.py

@@ -10,7 +10,7 @@ from sqlalchemy.future import select
 from sqlalchemy.orm import selectinload
 from pydantic import BaseModel
 import json
-from datetime import datetime
+from datetime import datetime, timezone
 
 from app.api import deps
 from app.db.session import get_db
@@ -94,7 +94,7 @@ async def export_database(
         # 7. 构建导出数据
         export_data = {
             "version": "1.0.0",
-            "export_date": datetime.utcnow().isoformat(),
+            "export_date": datetime.now(timezone.utc).isoformat(),
             "user": {
                 "id": current_user.id,
                 "email": current_user.email,

backend/app/api/v1/endpoints/projects.py

@@ -5,7 +5,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.future import select
 from sqlalchemy.orm import selectinload
 from pydantic import BaseModel
-from datetime import datetime
+from datetime import datetime, timezone
 import shutil
 import os
 import uuid
@@ -236,7 +236,7 @@ async def update_project(
     for field, value in update_data.items():
         setattr(project, field, value)
     
-    project.updated_at = datetime.utcnow()
+    project.updated_at = datetime.now(timezone.utc)
     await db.commit()
     await db.refresh(project)
     return project
@@ -260,7 +260,7 @@ async def delete_project(
         raise HTTPException(status_code=403, detail="无权删除此项目")
     
     project.is_active = False
-    project.updated_at = datetime.utcnow()
+    project.updated_at = datetime.now(timezone.utc)
     await db.commit()
     return {"message": "项目已删除"}
 
@@ -283,7 +283,7 @@ async def restore_project(
         raise HTTPException(status_code=403, detail="无权恢复此项目")
     
     project.is_active = True
-    project.updated_at = datetime.utcnow()
+    project.updated_at = datetime.now(timezone.utc)
     await db.commit()
     return {"message": "项目已恢复"}
 

backend/app/api/v1/endpoints/scan.py

@@ -3,7 +3,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.future import select
 from typing import Any, List, Optional
 from pydantic import BaseModel
-from datetime import datetime
+from datetime import datetime, timezone
 import uuid
 import shutil
 import os
@@ -53,7 +53,7 @@ async def process_zip_task(task_id: str, file_path: str, db_session_factory, use
 
         try:
             task.status = "running"
-            task.started_at = datetime.utcnow()
+            task.started_at = datetime.now(timezone.utc)
             await db.commit()
             
             # 创建使用用户配置的LLM服务实例
@@ -116,7 +116,7 @@ async def process_zip_task(task_id: str, file_path: str, db_session_factory, use
                 if task_control.is_cancelled(task_id):
                     print(f"🛑 ZIP任务 {task_id} 已被取消")
                     task.status = "cancelled"
-                    task.completed_at = datetime.utcnow()
+                    task.completed_at = datetime.now(timezone.utc)
                     await db.commit()
                     task_control.cleanup_task(task_id)
                     return
@@ -173,7 +173,7 @@ async def process_zip_task(task_id: str, file_path: str, db_session_factory, use
             # 如果有文件需要分析但全部失败，标记为失败
             if len(files_to_scan) > 0 and scanned_files == 0:
                 task.status = "failed"
-                task.completed_at = datetime.utcnow()
+                task.completed_at = datetime.now(timezone.utc)
                 task.scanned_files = 0
                 task.total_lines = total_lines
                 task.issues_count = 0
@@ -182,7 +182,7 @@ async def process_zip_task(task_id: str, file_path: str, db_session_factory, use
                 print(f"❌ ZIP任务 {task_id} 失败: 所有 {len(files_to_scan)} 个文件分析均失败，请检查 LLM API 配置")
             else:
                 task.status = "completed"
-                task.completed_at = datetime.utcnow()
+                task.completed_at = datetime.now(timezone.utc)
                 task.scanned_files = scanned_files
                 task.total_lines = total_lines
                 task.issues_count = total_issues
@@ -194,7 +194,7 @@ async def process_zip_task(task_id: str, file_path: str, db_session_factory, use
         except Exception as e:
             print(f"❌ ZIP扫描失败: {e}")
             task.status = "failed"
-            task.completed_at = datetime.utcnow()
+            task.completed_at = datetime.now(timezone.utc)
             await db.commit()
             task_control.cleanup_task(task_id)
         finally:
@@ -408,7 +408,7 @@ async def instant_analysis(
     # 创建使用用户配置的LLM服务实例
     llm_service = LLMService(user_config=user_config)
     
-    start_time = datetime.utcnow()
+    start_time = datetime.now(timezone.utc)
     
     try:
         result = await llm_service.analyze_code(req.code, req.language)
@@ -421,7 +421,7 @@ async def instant_analysis(
             detail=f"代码分析失败: {error_msg}"
         )
     
-    end_time = datetime.utcnow()
+    end_time = datetime.now(timezone.utc)
     duration = (end_time - start_time).total_seconds()
 
     # Save record

backend/app/api/v1/endpoints/tasks.py

@@ -4,7 +4,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.future import select
 from sqlalchemy.orm import selectinload
 from pydantic import BaseModel
-from datetime import datetime
+from datetime import datetime, timezone
 
 from app.api import deps
 from app.db.session import get_db
@@ -161,7 +161,7 @@ async def cancel_task(
     
     # 更新数据库状态
     task.status = "cancelled"
-    task.completed_at = datetime.utcnow()
+    task.completed_at = datetime.now(timezone.utc)
     await db.commit()
     
     return {"message": "任务已取消", "task_id": id}
@@ -223,7 +223,7 @@ async def update_issue(
         issue.status = issue_update.status
         if issue_update.status == "resolved":
             issue.resolved_by = current_user.id
-            issue.resolved_at = datetime.utcnow()
+            issue.resolved_at = datetime.now(timezone.utc)
     
     await db.commit()
     await db.refresh(issue)
@@ -299,7 +299,7 @@ async def export_task_report_pdf(
     pdf_bytes = ReportGenerator.generate_task_report(task_dict, issues_list, project_name)
     
     # 返回 PDF 文件
-    filename = f"audit-report-{task.id[:8]}-{datetime.utcnow().strftime('%Y%m%d')}.pdf"
+    filename = f"audit-report-{task.id[:8]}-{datetime.now(timezone.utc).strftime('%Y%m%d')}.pdf"
     return Response(
         content=pdf_bytes,
         media_type="application/pdf",

backend/app/core/security.py

@@ -1,4 +1,4 @@
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 from typing import Any, Union
 from jose import jwt
 from passlib.context import CryptContext
@@ -12,9 +12,9 @@ def create_access_token(
     subject: Union[str, Any], expires_delta: timedelta = None
 ) -> str:
     if expires_delta:
-        expire = datetime.utcnow() + expires_delta
+        expire = datetime.now(timezone.utc) + expires_delta
     else:
-        expire = datetime.utcnow() + timedelta(
+        expire = datetime.now(timezone.utc) + timedelta(
             minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES
         )
     to_encode = {"exp": expire, "sub": str(subject)}

backend/app/db/init_db.py

@@ -4,7 +4,7 @@
 """
 import json
 import logging
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.future import select
 
@@ -60,7 +60,7 @@ async def create_demo_data(db: AsyncSession, user: User) -> None:
         return
     
     logger.info("开始创建演示数据...")
-    now = datetime.utcnow()
+    now = datetime.now(timezone.utc)
     
     # ==================== 创建演示项目 ====================
     projects_data = [

backend/app/services/llm/service.py

@@ -215,14 +215,16 @@ class LLMService:
 2. JSON字符串值中的特殊字符必须正确转义（换行用\\n，双引号用\\"，反斜杠用\\\\）
 3. code_snippet字段必须使用\\n表示换行
 
-请从以下维度全面分析代码：
-- 编码规范和代码风格
+请从以下维度全面、彻底地分析代码，找出所有问题：
+- 安全漏洞（SQL注入、XSS、命令注入、路径遍历、SSRF、XXE、反序列化、硬编码密钥等）
 - 潜在的 Bug 和逻辑错误
 - 性能问题和优化建议
-- 安全漏洞和风险
+- 编码规范和代码风格
 - 可维护性和可读性
 - 最佳实践和设计模式
 
+【重要】请尽可能多地找出代码中的所有问题，不要遗漏任何安全漏洞或潜在风险！
+
 输出格式必须严格符合以下 JSON Schema：
 
 {schema}
@@ -268,14 +270,16 @@ You are a professional code auditing assistant. Your task is to analyze code and
 2. Special characters in JSON strings must be properly escaped (\\n for newlines, \\" for quotes, \\\\ for backslashes)
 3. code_snippet field MUST use \\n for newlines
 
-Please comprehensively analyze the code from the following dimensions:
-- Coding standards and code style
+Please comprehensively and thoroughly analyze the code, finding ALL issues from the following dimensions:
+- Security vulnerabilities (SQL injection, XSS, command injection, path traversal, SSRF, XXE, deserialization, hardcoded secrets, etc.)
 - Potential bugs and logical errors
 - Performance issues and optimization suggestions
-- Security vulnerabilities and risks
+- Coding standards and code style
 - Maintainability and readability
 - Best practices and design patterns
 
+【IMPORTANT】Find as many issues as possible! Do NOT miss any security vulnerabilities or potential risks!
+
 The output format MUST strictly conform to the following JSON Schema:
 
 {schema}
@@ -358,6 +362,10 @@ Please analyze the following code:
             response = await adapter.complete(request)
             content = response.content
             
+            # 记录 LLM 原始响应（用于调试）
+            logger.info(f"📥 LLM 原始响应长度: {len(content) if content else 0} 字符")
+            logger.info(f"📥 LLM 原始响应内容:\n{content}")
+            
             # 检查响应内容是否为空
             if not content or not content.strip():
                 error_msg = f"LLM返回空响应 - Provider: {self.config.provider.value}, Model: {self.config.model}"
@@ -368,6 +376,10 @@ Please analyze the following code:
             # 尝试从响应中提取JSON
             result = self._parse_json(content)
             
+            # 记录解析后的问题数量
+            issues_count = len(result.get("issues", []))
+            logger.info(f"📊 LLM 分析结果: 发现 {issues_count} 个问题, 质量评分: {result.get('quality_score', 'N/A')}")
+            
             # 检查解析结果是否有效（不是默认响应）
             if result == self._get_default_response():
                 error_msg = f"无法解析LLM响应为有效的分析结果 - Provider: {self.config.provider.value}"

backend/app/services/report_generator.py

@@ -208,7 +208,7 @@ class ReportGenerator:
             .issue-item {
                 border-bottom: 1px solid #e5e7eb;
                 padding: 10px 0; /* Reduced padding */
-                break-inside: avoid;
+                /* 移除 break-inside: avoid，允许问题块跨页 */
             }
             
             .issue-item:last-child {
@@ -220,6 +220,8 @@ class ReportGenerator:
                 justify-content: space-between;
                 align-items: flex-start;
                 margin-bottom: 6px; /* Reduced margin */
+                break-inside: avoid; /* 标题行不断开 */
+                break-after: avoid; /* 标题后不断页 */
             }
             
             .issue-title {
@@ -247,6 +249,7 @@ class ReportGenerator:
                 display: inline-block;
                 border-radius: 2px;
                 font-family: monospace;
+                break-after: avoid; /* 元信息后不断页 */
             }
             
             .issue-desc {

backend/app/services/scanner.py

@@ -5,7 +5,7 @@
 import asyncio
 import httpx
 from typing import List, Dict, Any, Optional
-from datetime import datetime
+from datetime import datetime, timezone
 from urllib.parse import urlparse, quote
 from sqlalchemy.ext.asyncio import AsyncSession
 
@@ -252,7 +252,7 @@ async def scan_repo_task(task_id: str, db_session_factory, user_config: dict = N
         try:
             # 1. 更新状态为运行中
             task.status = "running"
-            task.started_at = datetime.utcnow()
+            task.started_at = datetime.now(timezone.utc)
             await db.commit()
             
             # 创建使用用户配置的LLM服务实例
@@ -336,7 +336,7 @@ async def scan_repo_task(task_id: str, db_session_factory, user_config: dict = N
                 if task_control.is_cancelled(task_id):
                     print(f"🛑 任务 {task_id} 已被用户取消")
                     task.status = "cancelled"
-                    task.completed_at = datetime.utcnow()
+                    task.completed_at = datetime.now(timezone.utc)
                     await db.commit()
                     task_control.cleanup_task(task_id)
                     return
@@ -379,7 +379,7 @@ async def scan_repo_task(task_id: str, db_session_factory, user_config: dict = N
                     if task_control.is_cancelled(task_id):
                         print(f"🛑 任务 {task_id} 在LLM分析后被取消")
                         task.status = "cancelled"
-                        task.completed_at = datetime.utcnow()
+                        task.completed_at = datetime.now(timezone.utc)
                         await db.commit()
                         task_control.cleanup_task(task_id)
                         return
@@ -454,7 +454,7 @@ async def scan_repo_task(task_id: str, db_session_factory, user_config: dict = N
             # 如果所有文件都被跳过（空文件等），标记为完成但给出提示
             if len(files) > 0 and scanned_files == 0 and skipped_files == len(files):
                 task.status = "completed"
-                task.completed_at = datetime.utcnow()
+                task.completed_at = datetime.now(timezone.utc)
                 task.scanned_files = 0
                 task.total_lines = 0
                 task.issues_count = 0
@@ -464,7 +464,7 @@ async def scan_repo_task(task_id: str, db_session_factory, user_config: dict = N
             # 如果有文件需要分析但全部失败（LLM调用失败），标记为失败
             elif len(files) > 0 and scanned_files == 0 and failed_files > 0:
                 task.status = "failed"
-                task.completed_at = datetime.utcnow()
+                task.completed_at = datetime.now(timezone.utc)
                 task.scanned_files = 0
                 task.total_lines = total_lines
                 task.issues_count = 0
@@ -473,7 +473,7 @@ async def scan_repo_task(task_id: str, db_session_factory, user_config: dict = N
                 print(f"❌ 任务 {task_id} 失败: {failed_files} 个文件分析失败，请检查 LLM API 配置")
             else:
                 task.status = "completed"
-                task.completed_at = datetime.utcnow()
+                task.completed_at = datetime.now(timezone.utc)
                 task.scanned_files = scanned_files
                 task.total_lines = total_lines
                 task.issues_count = total_issues
@@ -485,6 +485,6 @@ async def scan_repo_task(task_id: str, db_session_factory, user_config: dict = N
         except Exception as e:
             print(f"❌ 扫描失败: {e}")
             task.status = "failed"
-            task.completed_at = datetime.utcnow()
+            task.completed_at = datetime.now(timezone.utc)
             await db.commit()
             task_control.cleanup_task(task_id)

backend/app/services/zip_storage.py

@@ -7,7 +7,7 @@ import os
 import shutil
 from pathlib import Path
 from typing import Optional
-from datetime import datetime
+from datetime import datetime, timezone
 
 from app.core.config import settings
 
@@ -54,7 +54,7 @@ async def save_project_zip(project_id: str, file_path: str, original_filename: s
     meta = {
         "original_filename": original_filename,
         "file_size": file_size,
-        "uploaded_at": datetime.utcnow().isoformat(),
+        "uploaded_at": datetime.now(timezone.utc).isoformat(),
         "project_id": project_id
     }
     

frontend/src/components/reports/InstantExportDialog.tsx

@@ -159,15 +159,15 @@ export default function InstantExportDialog({
                             </div>
                             <div className="flex items-center justify-between border-b border-gray-200 pb-1">
                                 <span className="text-gray-600 font-bold">质量评分:</span>
-                                <span className="font-bold text-black">{analysisResult.quality_score.toFixed(1)}/100</span>
+                                <span className="font-bold text-black">{(analysisResult.quality_score ?? 0).toFixed(1)}/100</span>
                             </div>
                             <div className="flex items-center justify-between border-b border-gray-200 pb-1">
                                 <span className="text-gray-600 font-bold">发现问题:</span>
-                                <span className="font-bold text-orange-600">{analysisResult.issues.length}</span>
+                                <span className="font-bold text-orange-600">{analysisResult.issues?.length ?? 0}</span>
                             </div>
                             <div className="flex items-center justify-between border-b border-gray-200 pb-1">
                                 <span className="text-gray-600 font-bold">分析耗时:</span>
-                                <span className="font-bold text-black">{analysisTime.toFixed(2)}s</span>
+                                <span className="font-bold text-black">{(analysisTime ?? 0).toFixed(2)}s</span>
                             </div>
                         </div>
                     </div>

frontend/src/pages/InstantAnalysis.tsx

@@ -633,7 +633,7 @@ class UserManager {
                               'bg-red-100 text-red-800'
                             }`}
                           >
-                            评分: {record.quality_score.toFixed(1)}
+                            评分: {(record.quality_score ?? 0).toFixed(1)}
                           </Badge>
                           <Button
                             variant="ghost"
@@ -653,7 +653,7 @@ class UserManager {
                         </span>
                         <span className="flex items-center gap-1">
                           <Clock className="w-3 h-3" />
-                          {record.analysis_time.toFixed(2)}s
+                          {(record.analysis_time ?? 0).toFixed(2)}s
                         </span>
                       </div>
                     </div>
@@ -827,7 +827,7 @@ class UserManager {
               <div className="flex items-center gap-2">
                 <Badge variant="outline" className="rounded-none border-black bg-white text-xs font-mono">
                   <Clock className="w-3 h-3 mr-1" />
-                  {analysisTime.toFixed(2)}s
+                  {(analysisTime ?? 0).toFixed(2)}s
                 </Badge>
                 <Badge variant="outline" className="rounded-none border-black bg-white text-xs font-mono uppercase">
                   {language}
@@ -852,10 +852,10 @@ class UserManager {
                     <Target className="w-6 h-6" />
                   </div>
                   <div className="text-3xl font-bold text-primary mb-1">
-                    {result.quality_score.toFixed(1)}
+                    {(result.quality_score ?? 0).toFixed(1)}
                   </div>
                   <p className="text-xs font-bold text-gray-600 uppercase mb-2">质量评分</p>
-                  <Progress value={result.quality_score} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-primary" />
+                  <Progress value={result.quality_score ?? 0} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-primary" />
                 </div>
 
                 <div className="text-center p-4 bg-white border-2 border-black shadow-[4px_4px_0px_0px_rgba(0,0,0,1)]">
@@ -863,7 +863,7 @@ class UserManager {
                     <AlertTriangle className="w-6 h-6" />
                   </div>
                   <div className="text-3xl font-bold text-red-600 mb-1">
-                    {result.summary.critical_issues + result.summary.high_issues}
+                    {(result.summary?.critical_issues ?? 0) + (result.summary?.high_issues ?? 0)}
                   </div>
                   <p className="text-xs font-bold text-red-700 uppercase mb-1">严重问题</p>
                   <div className="text-xs text-red-600 font-bold uppercase">需要立即处理</div>
@@ -874,7 +874,7 @@ class UserManager {
                     <Info className="w-6 h-6" />
                   </div>
                   <div className="text-3xl font-bold text-yellow-600 mb-1">
-                    {result.summary.medium_issues + result.summary.low_issues}
+                    {(result.summary?.medium_issues ?? 0) + (result.summary?.low_issues ?? 0)}
                   </div>
                   <p className="text-xs font-bold text-yellow-700 uppercase mb-1">一般问题</p>
                   <div className="text-xs text-yellow-600 font-bold uppercase">建议优化</div>
@@ -900,24 +900,24 @@ class UserManager {
                 </h3>
                 <div className="grid grid-cols-2 lg:grid-cols-4 gap-6 font-mono">
                   <div className="text-center">
-                    <div className="text-xl font-bold text-black mb-1">{result.metrics.complexity}</div>
+                    <div className="text-xl font-bold text-black mb-1">{result.metrics?.complexity ?? 0}</div>
                     <p className="text-xs text-gray-600 uppercase mb-2">复杂度</p>
-                    <Progress value={result.metrics.complexity} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-black" />
+                    <Progress value={result.metrics?.complexity ?? 0} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-black" />
                   </div>
                   <div className="text-center">
-                    <div className="text-xl font-bold text-black mb-1">{result.metrics.maintainability}</div>
+                    <div className="text-xl font-bold text-black mb-1">{result.metrics?.maintainability ?? 0}</div>
                     <p className="text-xs text-gray-600 uppercase mb-2">可维护性</p>
-                    <Progress value={result.metrics.maintainability} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-black" />
+                    <Progress value={result.metrics?.maintainability ?? 0} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-black" />
                   </div>
                   <div className="text-center">
-                    <div className="text-xl font-bold text-black mb-1">{result.metrics.security}</div>
+                    <div className="text-xl font-bold text-black mb-1">{result.metrics?.security ?? 0}</div>
                     <p className="text-xs text-gray-600 uppercase mb-2">安全性</p>
-                    <Progress value={result.metrics.security} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-black" />
+                    <Progress value={result.metrics?.security ?? 0} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-black" />
                   </div>
                   <div className="text-center">
-                    <div className="text-xl font-bold text-black mb-1">{result.metrics.performance}</div>
+                    <div className="text-xl font-bold text-black mb-1">{result.metrics?.performance ?? 0}</div>
                     <p className="text-xs text-gray-600 uppercase mb-2">性能</p>
-                    <Progress value={result.metrics.performance} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-black" />
+                    <Progress value={result.metrics?.performance ?? 0} className="h-2 border-2 border-black rounded-none bg-gray-200 [&>div]:bg-black" />
                   </div>
                 </div>
               </div>