From b5499ef7fe7668ac2d69c35f59c82a2d19f8431b Mon Sep 17 00:00:00 2001
From: niannian zheng <niannian.zheng@zurich.com.cn>
Date: Fri, 6 Mar 2026 15:51:59 +0800
Subject: [PATCH] =?UTF-8?q?refactor:=20=E5=B0=86=E6=A8=A1=E5=9E=8B?=
 =?UTF-8?q?=E5=B1=9E=E6=80=A7=E6=94=B9=E4=B8=BA=E5=8F=AF=E4=B8=BA=E7=A9=BA?=
 =?UTF-8?q?=E7=B1=BB=E5=9E=8B=E4=BB=A5=E5=A2=9E=E5=BC=BA=E5=81=A5=E5=A3=AE?=
 =?UTF-8?q?=E6=80=A7?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- 修改ApiResponse、RiskParityConfig等DTO类的属性为可空类型
- 在策略计算器中添加空值检查逻辑
- 更新服务层代码处理可能的空值情况
- 添加发布配置文件FolderProfile.pubxml
---
 .../Controllers/AuthController.cs             |  11 +-
 .../Controllers/PortfolioController.cs        |  11 +-
 .../PublishProfiles/FolderProfile.pubxml      |  15 ++
 AssetManager.Data/Portfolio.cs                |  42 +++---
 AssetManager.Data/Strategy.cs                 |  16 +--
 AssetManager.Data/User.cs                     |  12 +-
 .../Calculators/ChandelierExitCalculator.cs   |   5 +
 .../Calculators/MaTrendCalculator.cs          |   5 +
 .../Calculators/RiskParityCalculator.cs       |  15 +-
 .../StrategyEngine/StrategyEngine.cs          |   2 +-
 AssetManager.Models/ApiResponse.cs            |   4 +-
 AssetManager.Models/DTOs/AuthDTO.cs           |  28 ++--
 AssetManager.Models/DTOs/MarketDTO.cs         |   8 +-
 AssetManager.Models/DTOs/PortfolioDTO.cs      | 124 ++++++++--------
 AssetManager.Models/DTOs/RiskParityConfig.cs  |   4 +-
 AssetManager.Models/DTOs/StrategyDTO.cs       | 136 +++++++++---------
 AssetManager.Models/DTOs/StrategySignal.cs    |  14 +-
 AssetManager.Models/DTOs/UserDTO.cs           |  22 +--
 .../AssetManager.Services.csproj              |   1 +
 AssetManager.Services/PortfolioService.cs     |  36 +++--
 .../Services/WechatService.cs                 |  10 +-
 21 files changed, 295 insertions(+), 226 deletions(-)
 create mode 100644 AssetManager.API/Properties/PublishProfiles/FolderProfile.pubxml

diff --git a/AssetManager.API/Controllers/AuthController.cs b/AssetManager.API/Controllers/AuthController.cs
index d82c8ec..b1c7a6b 100644
--- a/AssetManager.API/Controllers/AuthController.cs
+++ b/AssetManager.API/Controllers/AuthController.cs
@@ -44,6 +44,15 @@ public class AuthController : ControllerBase
             _logger.LogInformation("Wechat login attempt");
             
             // 用code换取openid
+            if (request.Code == null)
+            {
+                return BadRequest(new ApiResponse<WechatLoginResponse>
+                {
+                    code = AssetManager.Models.StatusCodes.BadRequest,
+                    data = null,
+                    message = "Code is required"
+                });
+            }
             var authResult = await _wechatService.GetOpenIdAsync(request.Code);
             
             if (authResult.Errcode != 0)
@@ -93,7 +102,7 @@ public class AuthController : ControllerBase
             }
             
             // 生成真实的JWT令牌
-            var token = _jwtService.GenerateToken(user.Id, user.UserName, user.Email);
+            var token = _jwtService.GenerateToken(user.Id ?? "", user.UserName ?? "", user.Email ?? "");
             
             var response = new WechatLoginResponse
             {
diff --git a/AssetManager.API/Controllers/PortfolioController.cs b/AssetManager.API/Controllers/PortfolioController.cs
index 915a8e1..4a523a6 100644
--- a/AssetManager.API/Controllers/PortfolioController.cs
+++ b/AssetManager.API/Controllers/PortfolioController.cs
@@ -41,7 +41,7 @@ public class PortfolioController : ControllerBase
     /// </summary>
     private string GetCurrentUserId()
     {
-        return User.FindFirst(ClaimTypes.NameIdentifier)?.Value;
+        return User.FindFirst(ClaimTypes.NameIdentifier)?.Value ?? throw new Exception("User not authenticated");
     }
 
     /// <summary>
@@ -433,6 +433,15 @@ public class PortfolioController : ControllerBase
             }
 
             // 2. 获取策略
+            if (portfolio.StrategyId == null)
+            {
+                return NotFound(new ApiResponse<StrategySignal>
+                {
+                    code = AssetManager.Models.StatusCodes.NotFound,
+                    data = null,
+                    message = "策略ID不存在"
+                });
+            }
             var strategy = _strategyService.GetStrategyById(portfolio.StrategyId, userId);
             if (strategy == null)
             {
diff --git a/AssetManager.API/Properties/PublishProfiles/FolderProfile.pubxml b/AssetManager.API/Properties/PublishProfiles/FolderProfile.pubxml
new file mode 100644
index 0000000..f524c66
--- /dev/null
+++ b/AssetManager.API/Properties/PublishProfiles/FolderProfile.pubxml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- https://go.microsoft.com/fwlink/?LinkID=208121. -->
+<Project>
+  <PropertyGroup>
+    <DeleteExistingFiles>false</DeleteExistingFiles>
+    <ExcludeApp_Data>false</ExcludeApp_Data>
+    <LaunchSiteAfterPublish>true</LaunchSiteAfterPublish>
+    <LastUsedBuildConfiguration>Release</LastUsedBuildConfiguration>
+    <LastUsedPlatform>Any CPU</LastUsedPlatform>
+    <PublishProvider>FileSystem</PublishProvider>
+    <PublishUrl>bin\Release\net8.0\publish\</PublishUrl>
+    <WebPublishMethod>FileSystem</WebPublishMethod>
+    <_TargetId>Folder</_TargetId>
+  </PropertyGroup>
+</Project>
\ No newline at end of file
diff --git a/AssetManager.Data/Portfolio.cs b/AssetManager.Data/Portfolio.cs
index 1b6b68d..b9a316d 100644
--- a/AssetManager.Data/Portfolio.cs
+++ b/AssetManager.Data/Portfolio.cs
@@ -12,31 +12,31 @@ public class Portfolio
     /// 主键
     /// </summary>
     [SugarColumn(IsPrimaryKey = true, IsIdentity = false)]
-    public string Id { get; set; }
+    public string? Id { get; set; }
     
     /// <summary>
     /// 所属用户ID
     /// </summary>
     [SugarColumn(ColumnName = "user_id", IndexGroupNameList = new string[] { "idx_user_id" })]
-    public string UserId { get; set; }
+    public string? UserId { get; set; }
     
     /// <summary>
     /// 所用策略ID
     /// </summary>
     [SugarColumn(ColumnName = "strategy_id", IndexGroupNameList = new string[] { "idx_strategy_id" })]
-    public string StrategyId { get; set; }
+    public string? StrategyId { get; set; }
     
     /// <summary>
     /// 组合名称
     /// </summary>
     [SugarColumn(ColumnName = "name", Length = 200)]
-    public string Name { get; set; }
+    public string? Name { get; set; }
     
     /// <summary>
     /// 组合币种 (USD/CNY等)
     /// </summary>
     [SugarColumn(ColumnName = "currency", Length = 10)]
-    public string Currency { get; set; }
+    public string? Currency { get; set; }
     
     /// <summary>
     /// 当前总市值 (可冗余或实时计算)
@@ -54,7 +54,7 @@ public class Portfolio
     /// 运行状态 (运行中/监控中)
     /// </summary>
     [SugarColumn(ColumnName = "status", Length = 50)]
-    public string Status { get; set; }
+    public string? Status { get; set; }
     
     /// <summary>
     /// 创建时间
@@ -79,31 +79,31 @@ public class Position
     /// 主键
     /// </summary>
     [SugarColumn(IsPrimaryKey = true, IsIdentity = false)]
-    public string Id { get; set; }
+    public string? Id { get; set; }
     
     /// <summary>
     /// 所属组合ID
     /// </summary>
     [SugarColumn(ColumnName = "portfolio_id", IndexGroupNameList = new string[] { "idx_portfolio_id" })]
-    public string PortfolioId { get; set; }
+    public string? PortfolioId { get; set; }
     
     /// <summary>
     /// 标的代码 (如: UPRO.US)
     /// </summary>
     [SugarColumn(ColumnName = "stock_code", Length = 50)]
-    public string StockCode { get; set; }
+    public string? StockCode { get; set; }
     
     /// <summary>
     /// 标的名称
     /// </summary>
     [SugarColumn(ColumnName = "stock_name", Length = 200)]
-    public string StockName { get; set; }
+    public string? StockName { get; set; }
     
     /// <summary>
     /// 资产类型 (Stock/Crypto)
     /// </summary>
     [SugarColumn(ColumnName = "asset_type", Length = 20)]
-    public string AssetType { get; set; }
+    public string? AssetType { get; set; }
     
     /// <summary>
     /// 持有数量
@@ -121,7 +121,7 @@ public class Position
     /// 标的币种
     /// </summary>
     [SugarColumn(ColumnName = "currency", Length = 10)]
-    public string Currency { get; set; }
+    public string? Currency { get; set; }
     
     /// <summary>
     /// 建仓时间
@@ -146,37 +146,37 @@ public class Transaction
     /// 主键
     /// </summary>
     [SugarColumn(IsPrimaryKey = true, IsIdentity = false)]
-    public string Id { get; set; }
+    public string? Id { get; set; }
     
     /// <summary>
     /// 所属组合ID
     /// </summary>
     [SugarColumn(ColumnName = "portfolio_id", IndexGroupNameList = new string[] { "idx_portfolio_id" })]
-    public string PortfolioId { get; set; }
+    public string? PortfolioId { get; set; }
     
     /// <summary>
     /// 交易类型 (buy/sell)
     /// </summary>
     [SugarColumn(ColumnName = "type", Length = 20)]
-    public string Type { get; set; }
+    public string? Type { get; set; }
     
     /// <summary>
     /// 标的代码
     /// </summary>
     [SugarColumn(ColumnName = "stock_code", Length = 50)]
-    public string StockCode { get; set; }
+    public string? StockCode { get; set; }
     
     /// <summary>
     /// 资产类型 (Stock/Crypto)
     /// </summary>
     [SugarColumn(ColumnName = "asset_type", Length = 20)]
-    public string AssetType { get; set; }
+    public string? AssetType { get; set; }
     
     /// <summary>
     /// 交易标题 (如: 定期定投)
     /// </summary>
     [SugarColumn(ColumnName = "title", Length = 200)]
-    public string Title { get; set; }
+    public string? Title { get; set; }
     
     /// <summary>
     /// 交易数量
@@ -200,19 +200,19 @@ public class Transaction
     /// 交易币种
     /// </summary>
     [SugarColumn(ColumnName = "currency", Length = 10)]
-    public string Currency { get; set; }
+    public string? Currency { get; set; }
     
     /// <summary>
     /// 交易状态 (processing/completed)
     /// </summary>
     [SugarColumn(ColumnName = "status", Length = 50)]
-    public string Status { get; set; }
+    public string? Status { get; set; }
     
     /// <summary>
     /// 交易备注
     /// </summary>
     [SugarColumn(ColumnName = "remark", Length = 500, IsNullable = true)]
-    public string Remark { get; set; }
+    public string? Remark { get; set; }
     
     /// <summary>
     /// 交易发生时间
diff --git a/AssetManager.Data/Strategy.cs b/AssetManager.Data/Strategy.cs
index 2ef7bb1..60f5939 100644
--- a/AssetManager.Data/Strategy.cs
+++ b/AssetManager.Data/Strategy.cs
@@ -12,49 +12,49 @@ public class Strategy
     /// 主键
     /// </summary>
     [SugarColumn(IsPrimaryKey = true, IsIdentity = false)]
-    public string Id { get; set; }
+    public string? Id { get; set; }
     
     /// <summary>
     /// 所属用户ID
     /// </summary>
     [SugarColumn(ColumnName = "user_id", Length = 100, IndexGroupNameList = new string[] { "idx_user_id" })]
-    public string UserId { get; set; }
+    public string? UserId { get; set; }
     
     /// <summary>
     /// 策略别名/名称
     /// </summary>
     [SugarColumn(ColumnName = "alias", Length = 200)]
-    public string Alias { get; set; }
+    public string? Alias { get; set; }
     
     /// <summary>
     /// 策略类型 (如: ma_trend, chandelier_exit, risk_parity)
     /// </summary>
     [SugarColumn(ColumnName = "type", Length = 50)]
-    public string Type { get; set; }
+    public string? Type { get; set; }
     
     /// <summary>
     /// 策略描述
     /// </summary>
     [SugarColumn(ColumnName = "description", Length = 500)]
-    public string Description { get; set; }
+    public string? Description { get; set; }
     
     /// <summary>
     /// 策略标签 (逗号分隔的字符串)
     /// </summary>
     [SugarColumn(ColumnName = "tags")]
-    public string Tags { get; set; }
+    public string? Tags { get; set; }
     
     /// <summary>
     /// 风险等级
     /// </summary>
     [SugarColumn(ColumnName = "risk_level", Length = 20)]
-    public string RiskLevel { get; set; }
+    public string? RiskLevel { get; set; }
     
     /// <summary>
     /// 策略配置项(周期,阈值,资产配比)
     /// </summary>
     [SugarColumn(ColumnName = "config", IsJson = true)]
-    public string Config { get; set; }
+    public string? Config { get; set; }
     
     /// <summary>
     /// 创建时间
diff --git a/AssetManager.Data/User.cs b/AssetManager.Data/User.cs
index dae2e17..1a723b3 100644
--- a/AssetManager.Data/User.cs
+++ b/AssetManager.Data/User.cs
@@ -12,37 +12,37 @@ public class User
     /// 主键
     /// </summary>
     [SugarColumn(IsPrimaryKey = true, IsIdentity = false)]
-    public string Id { get; set; }
+    public string? Id { get; set; }
     
     /// <summary>
     /// 微信OpenID (UK)
     /// </summary>
     [SugarColumn(ColumnName = "open_id", Length = 100, IsNullable = true)]
-    public string OpenId { get; set; }
+    public string? OpenId { get; set; }
     
     /// <summary>
     /// 用户名
     /// </summary>
     [SugarColumn(ColumnName = "user_name", Length = 100)]
-    public string UserName { get; set; }
+    public string? UserName { get; set; }
     
     /// <summary>
     /// 邮箱
     /// </summary>
     [SugarColumn(ColumnName = "email", Length = 255, IsNullable = true)]
-    public string Email { get; set; }
+    public string? Email { get; set; }
     
     /// <summary>
     /// 头像URL
     /// </summary>
     [SugarColumn(ColumnName = "avatar", Length = 500, IsNullable = true)]
-    public string Avatar { get; set; }
+    public string? Avatar { get; set; }
     
     /// <summary>
     /// 会员等级
     /// </summary>
     [SugarColumn(ColumnName = "member_level", Length = 50)]
-    public string MemberLevel { get; set; }
+    public string? MemberLevel { get; set; }
 
     /// <summary>
     /// 用户默认本位币 (CNY/USD/HKD)
diff --git a/AssetManager.Infrastructure/StrategyEngine/Calculators/ChandelierExitCalculator.cs b/AssetManager.Infrastructure/StrategyEngine/Calculators/ChandelierExitCalculator.cs
index 34cbdaa..1ccdeb8 100644
--- a/AssetManager.Infrastructure/StrategyEngine/Calculators/ChandelierExitCalculator.cs
+++ b/AssetManager.Infrastructure/StrategyEngine/Calculators/ChandelierExitCalculator.cs
@@ -55,6 +55,11 @@ public class ChandelierExitCalculator : IStrategyCalculator
         {
             cancellationToken.ThrowIfCancellationRequested();
 
+            if (position.StockCode == null)
+            {
+                continue;
+            }
+
             try
             {
                 // 获取历史 K 线数据（需要 period + 1 根来计算 ATR）
diff --git a/AssetManager.Infrastructure/StrategyEngine/Calculators/MaTrendCalculator.cs b/AssetManager.Infrastructure/StrategyEngine/Calculators/MaTrendCalculator.cs
index 6a9752b..c3dac7f 100644
--- a/AssetManager.Infrastructure/StrategyEngine/Calculators/MaTrendCalculator.cs
+++ b/AssetManager.Infrastructure/StrategyEngine/Calculators/MaTrendCalculator.cs
@@ -55,6 +55,11 @@ public class MaTrendCalculator : IStrategyCalculator
         {
             cancellationToken.ThrowIfCancellationRequested();
 
+            if (position.StockCode == null)
+            {
+                continue;
+            }
+
             try
             {
                 // 获取历史 K 线数据（需要 longPeriod + 1 根）
diff --git a/AssetManager.Infrastructure/StrategyEngine/Calculators/RiskParityCalculator.cs b/AssetManager.Infrastructure/StrategyEngine/Calculators/RiskParityCalculator.cs
index c11ef8f..e242399 100644
--- a/AssetManager.Infrastructure/StrategyEngine/Calculators/RiskParityCalculator.cs
+++ b/AssetManager.Infrastructure/StrategyEngine/Calculators/RiskParityCalculator.cs
@@ -36,14 +36,14 @@ public class RiskParityCalculator : IStrategyCalculator
         var targetAssets = new List<string>();
         var userDefinedWeights = new Dictionary<string, decimal>();
 
-        if (config.Assets?.Count > 0)
+        if (config.Assets?.Count >0)
         {
-            targetAssets = config.Assets.Select(a => a.Symbol).ToList();
-            userDefinedWeights = config.Assets.ToDictionary(a => a.Symbol, a => a.TargetWeight);
+            targetAssets = config.Assets.Where(a => a.Symbol != null).Select(a => a.Symbol!).ToList();
+            userDefinedWeights = config.Assets.Where(a => a.Symbol != null).ToDictionary(a => a.Symbol!, a => a.TargetWeight);
         }
         else
         {
-            targetAssets = positions.Select(p => p.StockCode).ToList();
+            targetAssets = positions.Where(p => p.StockCode != null).Select(p => p.StockCode!).ToList();
         }
 
         if (targetAssets.Count == 0)
@@ -219,8 +219,13 @@ public class RiskParityCalculator : IStrategyCalculator
         {
             cancellationToken.ThrowIfCancellationRequested();
 
+            if (position.StockCode == null)
+            {
+                continue;
+            }
+
             MarketPriceResponse priceResponse;
-            if (position.AssetType.Equals("Crypto", StringComparison.OrdinalIgnoreCase))
+            if (position.AssetType?.Equals("Crypto", StringComparison.OrdinalIgnoreCase) == true)
             {
                 priceResponse = await _marketDataService.GetCryptoPriceAsync(position.StockCode);
             }
diff --git a/AssetManager.Infrastructure/StrategyEngine/StrategyEngine.cs b/AssetManager.Infrastructure/StrategyEngine/StrategyEngine.cs
index 8d2a589..e506ff2 100644
--- a/AssetManager.Infrastructure/StrategyEngine/StrategyEngine.cs
+++ b/AssetManager.Infrastructure/StrategyEngine/StrategyEngine.cs
@@ -40,7 +40,7 @@ public class StrategyEngine : IStrategyEngine
             };
         }
 
-        if (!_calculators.TryGetValue(strategy.Type, out var calculator))
+        if (strategy.Type == null || !_calculators.TryGetValue(strategy.Type, out var calculator))
         {
             _logger.LogWarning("未找到策略类型 {StrategyType} 的计算器", strategy.Type);
             return new StrategySignal
diff --git a/AssetManager.Models/ApiResponse.cs b/AssetManager.Models/ApiResponse.cs
index 23736d6..c322912 100644
--- a/AssetManager.Models/ApiResponse.cs
+++ b/AssetManager.Models/ApiResponse.cs
@@ -3,8 +3,8 @@ namespace AssetManager.Models;
 public class ApiResponse<T>
 {
     public int code { get; set; }
-    public T data { get; set; }
-    public string message { get; set; }
+    public T? data { get; set; }
+    public string? message { get; set; }
 }
 
 public static class StatusCodes
diff --git a/AssetManager.Models/DTOs/AuthDTO.cs b/AssetManager.Models/DTOs/AuthDTO.cs
index 65b1808..0770bc2 100644
--- a/AssetManager.Models/DTOs/AuthDTO.cs
+++ b/AssetManager.Models/DTOs/AuthDTO.cs
@@ -2,35 +2,35 @@ namespace AssetManager.Models.DTOs;
 
 public class LoginRequest
 {
-    public string Email { get; set; }
-    public string Password { get; set; }
+    public string? Email { get; set; }
+    public string? Password { get; set; }
 }
 
 public class LoginResponse
 {
-    public string Token { get; set; }
-    public string ExpireAt { get; set; }
-    public UserBasicInfo User { get; set; }
-    public string UserId { get; set; }
+    public string? Token { get; set; }
+    public string? ExpireAt { get; set; }
+    public UserBasicInfo? User { get; set; }
+    public string? UserId { get; set; }
 }
 
 public class UserBasicInfo
 {
-    public string UserName { get; set; }
-    public string Email { get; set; }
+    public string? UserName { get; set; }
+    public string? Email { get; set; }
 }
 
 public class WechatLoginResponse
 {
-    public string Token { get; set; }
-    public string ExpireAt { get; set; }
-    public UserBasicInfo User { get; set; }
-    public string OpenId { get; set; }
-    public string UserId { get; set; }
+    public string? Token { get; set; }
+    public string? ExpireAt { get; set; }
+    public UserBasicInfo? User { get; set; }
+    public string? OpenId { get; set; }
+    public string? UserId { get; set; }
 }
 
 public class WechatLoginRequest
 {
-    public string Code { get; set; }
+    public string? Code { get; set; }
     public string? NickName { get; set; }
 }
diff --git a/AssetManager.Models/DTOs/MarketDTO.cs b/AssetManager.Models/DTOs/MarketDTO.cs
index 0aed729..b718608 100644
--- a/AssetManager.Models/DTOs/MarketDTO.cs
+++ b/AssetManager.Models/DTOs/MarketDTO.cs
@@ -8,7 +8,7 @@ public class MarketPriceResponse
     /// <summary>
     /// 标的代码
     /// </summary>
-    public string Symbol { get; set; }
+    public string? Symbol { get; set; }
 
     /// <summary>
     /// 价格
@@ -28,7 +28,7 @@ public class MarketPriceResponse
     /// <summary>
     /// 资产类型
     /// </summary>
-    public string AssetType { get; set; }
+    public string? AssetType { get; set; }
 }
 
 /// <summary>
@@ -39,7 +39,7 @@ public class MarketDataResponse
     /// <summary>
     /// 标的代码
     /// </summary>
-    public string Symbol { get; set; }
+    public string? Symbol { get; set; }
 
     /// <summary>
     /// 时间戳
@@ -74,5 +74,5 @@ public class MarketDataResponse
     /// <summary>
     /// 资产类型
     /// </summary>
-    public string AssetType { get; set; }
+    public string? AssetType { get; set; }
 }
\ No newline at end of file
diff --git a/AssetManager.Models/DTOs/PortfolioDTO.cs b/AssetManager.Models/DTOs/PortfolioDTO.cs
index 690ca6e..bcb7639 100644
--- a/AssetManager.Models/DTOs/PortfolioDTO.cs
+++ b/AssetManager.Models/DTOs/PortfolioDTO.cs
@@ -2,66 +2,66 @@ namespace AssetManager.Models.DTOs;
 
 public class CreatePortfolioRequest
 {
-    public string name { get; set; }
-    public string strategyId { get; set; }
-    public string currency { get; set; }
-    public List<StockItem> stocks { get; set; }
+    public string? name { get; set; }
+    public string? strategyId { get; set; }
+    public string? currency { get; set; }
+    public List<StockItem>? stocks { get; set; }
 }
 
 public class StockItem
 {
-    public string name { get; set; }
-    public string code { get; set; }
+    public string? name { get; set; }
+    public string? code { get; set; }
     public double price { get; set; }
     public int amount { get; set; }
-    public string date { get; set; }
-    public string currency { get; set; }
+    public string? date { get; set; }
+    public string? currency { get; set; }
     public string assetType { get; set; } = "Stock"; // Stock / Crypto
 }
 
 public class CreatePortfolioResponse
 {
-    public string id { get; set; }
+    public string? id { get; set; }
     public double totalValue { get; set; }
     public double returnRate { get; set; }
-    public string currency { get; set; }
-    public string createdAt { get; set; }
+    public string? currency { get; set; }
+    public string? createdAt { get; set; }
 }
 
 public class PortfolioDetailResponse
 {
-    public string id { get; set; }
-    public string name { get; set; }
-    public string currency { get; set; }
-    public string status { get; set; }
-    public StrategyInfo strategy { get; set; }
+    public string? id { get; set; }
+    public string? name { get; set; }
+    public string? currency { get; set; }
+    public string? status { get; set; }
+    public StrategyInfo? strategy { get; set; }
     public double portfolioValue { get; set; }
     public double totalReturn { get; set; }
     public double todayProfit { get; set; }
     public double historicalChange { get; set; }
     public double dailyVolatility { get; set; }
-    public string todayProfitCurrency { get; set; }
-    public string logicModel { get; set; }
-    public string logicModelStatus { get; set; }
-    public string logicModelDescription { get; set; }
+    public string? todayProfitCurrency { get; set; }
+    public string? logicModel { get; set; }
+    public string? logicModelStatus { get; set; }
+    public string? logicModelDescription { get; set; }
     public int totalItems { get; set; }
     public double totalRatio { get; set; }
-    public List<PositionItem> positions { get; set; }
+    public List<PositionItem>? positions { get; set; }
 }
 
 public class StrategyInfo
 {
-    public string id { get; set; }
-    public string name { get; set; }
-    public string description { get; set; }
+    public string? id { get; set; }
+    public string? name { get; set; }
+    public string? description { get; set; }
 }
 
 public class PositionItem
 {
-    public string id { get; set; }
-    public string stockCode { get; set; }
-    public string stockName { get; set; }
-    public string symbol { get; set; }
+    public string? id { get; set; }
+    public string? stockCode { get; set; }
+    public string? stockName { get; set; }
+    public string? symbol { get; set; }
     public int amount { get; set; }
     public double averagePrice { get; set; }
     public double currentPrice { get; set; }
@@ -71,33 +71,33 @@ public class PositionItem
     public double changeAmount { get; set; }
     public double ratio { get; set; }
     public double deviationRatio { get; set; }
-    public string currency { get; set; }
+    public string? currency { get; set; }
 }
 
 public class TransactionItem
 {
-    public string id { get; set; }
-    public string portfolioId { get; set; }
-    public string date { get; set; }
-    public string time { get; set; }
-    public string type { get; set; }
-    public string title { get; set; }
+    public string? id { get; set; }
+    public string? portfolioId { get; set; }
+    public string? date { get; set; }
+    public string? time { get; set; }
+    public string? type { get; set; }
+    public string? title { get; set; }
     public double amount { get; set; }
-    public string currency { get; set; }
-    public string status { get; set; }
-    public string remark { get; set; }
+    public string? currency { get; set; }
+    public string? status { get; set; }
+    public string? remark { get; set; }
 }
 
 public class GetTransactionsRequest
 {
-    public string portfolioId { get; set; }
+    public string? portfolioId { get; set; }
     public int limit { get; set; }
     public int offset { get; set; }
 }
 
 public class GetTransactionsResponse
 {
-    public List<TransactionItem> items { get; set; }
+    public List<TransactionItem>? items { get; set; }
     public int total { get; set; }
     public int page { get; set; }
     public int pageSize { get; set; }
@@ -105,51 +105,51 @@ public class GetTransactionsResponse
 
 public class CreateTransactionRequest
 {
-    public string portfolioId { get; set; }
-    public string type { get; set; }
-    public string stockCode { get; set; }
+    public string? portfolioId { get; set; }
+    public string? type { get; set; }
+    public string? stockCode { get; set; }
     public int amount { get; set; }
     public double price { get; set; }
-    public string currency { get; set; }
-    public string remark { get; set; }
+    public string? currency { get; set; }
+    public string? remark { get; set; }
     public string assetType { get; set; } = "Stock"; // Stock / Crypto
-    public string transactionTime { get; set; } // 实际交易时间，可选
+    public string? transactionTime { get; set; } // 实际交易时间，可选
 }
 
 public class CreateTransactionResponse
 {
-    public string id { get; set; }
+    public string? id { get; set; }
     public double totalAmount { get; set; }
-    public string status { get; set; }
-    public string createdAt { get; set; }
+    public string? status { get; set; }
+    public string? createdAt { get; set; }
 }
 
 public class PortfolioListItem
 {
-    public string id { get; set; }
-    public string name { get; set; }
-    public string tags { get; set; }
-    public string status { get; set; }
-    public string statusType { get; set; }
-    public string iconChar { get; set; }
-    public string iconBgClass { get; set; }
-    public string iconTextClass { get; set; }
+    public string? id { get; set; }
+    public string? name { get; set; }
+    public string? tags { get; set; }
+    public string? status { get; set; }
+    public string? statusType { get; set; }
+    public string? iconChar { get; set; }
+    public string? iconBgClass { get; set; }
+    public string? iconTextClass { get; set; }
     public double value { get; set; }
-    public string currency { get; set; }
+    public string? currency { get; set; }
     public double returnRate { get; set; }
-    public string returnType { get; set; }
+    public string? returnType { get; set; }
 }
 
 public class GetPortfoliosResponse
 {
-    public List<PortfolioListItem> items { get; set; }
+    public List<PortfolioListItem>? items { get; set; }
 }
 
 public class TotalAssetsResponse
 {
     public double totalValue { get; set; }
-    public string currency { get; set; }
+    public string? currency { get; set; }
     public double todayProfit { get; set; }
-    public string todayProfitCurrency { get; set; }
+    public string? todayProfitCurrency { get; set; }
     public double totalReturnRate { get; set; }
 }
diff --git a/AssetManager.Models/DTOs/RiskParityConfig.cs b/AssetManager.Models/DTOs/RiskParityConfig.cs
index 3bc5277..574aec1 100644
--- a/AssetManager.Models/DTOs/RiskParityConfig.cs
+++ b/AssetManager.Models/DTOs/RiskParityConfig.cs
@@ -18,7 +18,7 @@ public class RiskParityConfig
     /// <summary>
     /// 目标资产列表（可选，不指定则使用当前持仓）
     /// </summary>
-    public List<AssetAllocation> Assets { get; set; }
+    public List<AssetAllocation>? Assets { get; set; }
 }
 
 /// <summary>
@@ -29,7 +29,7 @@ public class AssetAllocation
     /// <summary>
     /// 标的代码
     /// </summary>
-    public string Symbol { get; set; }
+    public string? Symbol { get; set; }
 
     /// <summary>
     /// 目标权重
diff --git a/AssetManager.Models/DTOs/StrategyDTO.cs b/AssetManager.Models/DTOs/StrategyDTO.cs
index dc7948d..eec8a93 100644
--- a/AssetManager.Models/DTOs/StrategyDTO.cs
+++ b/AssetManager.Models/DTOs/StrategyDTO.cs
@@ -2,110 +2,110 @@ namespace AssetManager.Models.DTOs;
 
 public class StrategyListResponse
 {
-    public List<StrategyItem> items { get; set; }
+    public List<StrategyItem>? items { get; set; }
 }
 
 public class StrategyItem
 {
-    public string id { get; set; }
-    public string iconChar { get; set; }
-    public string title { get; set; }
-    public string tag { get; set; }
-    public string desc { get; set; }
-    public string bgClass { get; set; }
-    public string tagClass { get; set; }
-    public string btnText { get; set; }
-    public string btnClass { get; set; }
-    public string[] Tags { get; set; }
-    public string Id { get; set; }
-    public string IconChar { get; set; }
-    public string Title { get; set; }
-    public string Tag { get; set; }
-    public string Desc { get; set; }
-    public string BgClass { get; set; }
-    public string TagClass { get; set; }
-    public string BtnText { get; set; }
-    public string BtnClass { get; set; }
+    public string? id { get; set; }
+    public string? iconChar { get; set; }
+    public string? title { get; set; }
+    public string? tag { get; set; }
+    public string? desc { get; set; }
+    public string? bgClass { get; set; }
+    public string? tagClass { get; set; }
+    public string? btnText { get; set; }
+    public string? btnClass { get; set; }
+    public string[]? Tags { get; set; }
+    public string? Id { get; set; }
+    public string? IconChar { get; set; }
+    public string? Title { get; set; }
+    public string? Tag { get; set; }
+    public string? Desc { get; set; }
+    public string? BgClass { get; set; }
+    public string? TagClass { get; set; }
+    public string? BtnText { get; set; }
+    public string? BtnClass { get; set; }
 }
 
 public class StrategyDetail
 {
-    public string Id { get; set; }
-    public string IconChar { get; set; }
-    public string Title { get; set; }
-    public string Tag { get; set; }
-    public string Desc { get; set; }
-    public string BgClass { get; set; }
-    public string TagClass { get; set; }
-    public string[] Tags { get; set; }
-    public string BtnText { get; set; }
-    public string BtnClass { get; set; }
-    public object Parameters { get; set; }
-    public object Backtest { get; set; }
+    public string? Id { get; set; }
+    public string? IconChar { get; set; }
+    public string? Title { get; set; }
+    public string? Tag { get; set; }
+    public string? Desc { get; set; }
+    public string? BgClass { get; set; }
+    public string? TagClass { get; set; }
+    public string[]? Tags { get; set; }
+    public string? BtnText { get; set; }
+    public string? BtnClass { get; set; }
+    public object? Parameters { get; set; }
+    public object? Backtest { get; set; }
 }
 
 public class StrategyDetailResponse
 {
-    public string id { get; set; }
-    public string iconChar { get; set; }
-    public string title { get; set; }
-    public string riskLevel { get; set; }
-    public string description { get; set; }
-    public List<string> tags { get; set; }
-    public List<ParameterItem> parameters { get; set; }
+    public string? id { get; set; }
+    public string? iconChar { get; set; }
+    public string? title { get; set; }
+    public string? riskLevel { get; set; }
+    public string? description { get; set; }
+    public List<string>? tags { get; set; }
+    public List<ParameterItem>? parameters { get; set; }
 }
 
 public class ParameterItem
 {
-    public string name { get; set; }
-    public string displayName { get; set; }
-    public string type { get; set; }
-    public string value { get; set; }
+    public string? name { get; set; }
+    public string? displayName { get; set; }
+    public string? type { get; set; }
+    public string? value { get; set; }
 }
 
 public class CreateStrategyRequest
 {
-    public string name { get; set; }
-    public string type { get; set; }
-    public string description { get; set; }
-    public string riskLevel { get; set; }
-    public List<string> tags { get; set; }
-    public object parameters { get; set; }
+    public string? name { get; set; }
+    public string? type { get; set; }
+    public string? description { get; set; }
+    public string? riskLevel { get; set; }
+    public List<string>? tags { get; set; }
+    public object? parameters { get; set; }
 }
 
 public class StrategyResponse
 {
-    public string Id { get; set; }
-    public string Title { get; set; }
-    public string Status { get; set; }
+    public string? Id { get; set; }
+    public string? Title { get; set; }
+    public string? Status { get; set; }
 }
 
 public class UpdateStrategyRequest
 {
-    public string name { get; set; }
-    public string type { get; set; }
-    public string description { get; set; }
-    public string riskLevel { get; set; }
-    public List<string> tags { get; set; }
-    public object parameters { get; set; }
+    public string? name { get; set; }
+    public string? type { get; set; }
+    public string? description { get; set; }
+    public string? riskLevel { get; set; }
+    public List<string>? tags { get; set; }
+    public object? parameters { get; set; }
 }
 
 public class DeleteStrategyResponse
 {
-    public string Id { get; set; }
-    public string Status { get; set; }
+    public string? Id { get; set; }
+    public string? Status { get; set; }
 }
 
 public class StrategyListItemDTO
 {
-    public string id { get; set; }
-    public string userId { get; set; }
-    public string name { get; set; }
-    public string type { get; set; }
-    public string description { get; set; }
-    public List<string> tags { get; set; }
-    public string riskLevel { get; set; }
-    public string config { get; set; }
+    public string? id { get; set; }
+    public string? userId { get; set; }
+    public string? name { get; set; }
+    public string? type { get; set; }
+    public string? description { get; set; }
+    public List<string>? tags { get; set; }
+    public string? riskLevel { get; set; }
+    public string? config { get; set; }
     public DateTime createdAt { get; set; }
     public DateTime updatedAt { get; set; }
 }
diff --git a/AssetManager.Models/DTOs/StrategySignal.cs b/AssetManager.Models/DTOs/StrategySignal.cs
index 034697a..2fa8686 100644
--- a/AssetManager.Models/DTOs/StrategySignal.cs
+++ b/AssetManager.Models/DTOs/StrategySignal.cs
@@ -8,17 +8,17 @@ public class StrategySignal
     /// <summary>
     /// 策略类型: ma_trend / chandelier_exit / risk_parity
     /// </summary>
-    public string StrategyType { get; set; }
+    public string? StrategyType { get; set; }
 
     /// <summary>
     /// 信号: BUY / SELL / HOLD / REBALANCE
     /// </summary>
-    public string Signal { get; set; }
+    public string? Signal { get; set; }
 
     /// <summary>
     /// 标的代码
     /// </summary>
-    public string Symbol { get; set; }
+    public string? Symbol { get; set; }
 
     /// <summary>
     /// 信号强度 (0-1)
@@ -28,7 +28,7 @@ public class StrategySignal
     /// <summary>
     /// 信号原因
     /// </summary>
-    public string Reason { get; set; }
+    public string? Reason { get; set; }
 
     /// <summary>
     /// 建议价格
@@ -59,12 +59,12 @@ public class PositionSignal
     /// <summary>
     /// 标的代码
     /// </summary>
-    public string Symbol { get; set; }
+    public string? Symbol { get; set; }
 
     /// <summary>
     /// 该标的的信号
     /// </summary>
-    public string Signal { get; set; }
+    public string? Signal { get; set; }
 
     /// <summary>
     /// 建议数量
@@ -74,7 +74,7 @@ public class PositionSignal
     /// <summary>
     /// 信号原因
     /// </summary>
-    public string Reason { get; set; }
+    public string? Reason { get; set; }
 
     /// <summary>
     /// 目标权重（风险平价策略用）
diff --git a/AssetManager.Models/DTOs/UserDTO.cs b/AssetManager.Models/DTOs/UserDTO.cs
index dbbbf7c..dc17124 100644
--- a/AssetManager.Models/DTOs/UserDTO.cs
+++ b/AssetManager.Models/DTOs/UserDTO.cs
@@ -2,20 +2,20 @@ namespace AssetManager.Models.DTOs;
 
 public class UserInfoResponse
 {
-    public string UserName { get; set; }
-    public string MemberLevel { get; set; }
+    public string? UserName { get; set; }
+    public string? MemberLevel { get; set; }
     public int RunningDays { get; set; }
-    public string Avatar { get; set; }
-    public string Email { get; set; }
-    public string DefaultCurrency { get; set; }
+    public string? Avatar { get; set; }
+    public string? Email { get; set; }
+    public string? DefaultCurrency { get; set; }
 }
 
 public class UpdateUserRequest
 {
-    public string UserName { get; set; }
-    public string Avatar { get; set; }
-    public string Email { get; set; }
-    public string DefaultCurrency { get; set; }
+    public string? UserName { get; set; }
+    public string? Avatar { get; set; }
+    public string? Email { get; set; }
+    public string? DefaultCurrency { get; set; }
 }
 
 public class UserStatsResponse
@@ -28,6 +28,6 @@ public class UserStatsResponse
 
 public class UpdateUserResponse
 {
-    public string Status { get; set; }
-    public string UserName { get; set; }
+    public string? Status { get; set; }
+    public string? UserName { get; set; }
 }
diff --git a/AssetManager.Services/AssetManager.Services.csproj b/AssetManager.Services/AssetManager.Services.csproj
index 67252d0..29f0c9d 100644
--- a/AssetManager.Services/AssetManager.Services.csproj
+++ b/AssetManager.Services/AssetManager.Services.csproj
@@ -2,6 +2,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\AssetManager.Data\AssetManager.Data.csproj" />
+    <ProjectReference Include="..\AssetManager.Infrastructure\AssetManager.Infrastructure.csproj" />
     <ProjectReference Include="..\AssetManager.Models\AssetManager.Models.csproj" />
   </ItemGroup>
 
diff --git a/AssetManager.Services/PortfolioService.cs b/AssetManager.Services/PortfolioService.cs
index 0a18601..a6a3836 100644
--- a/AssetManager.Services/PortfolioService.cs
+++ b/AssetManager.Services/PortfolioService.cs
@@ -27,7 +27,7 @@ public class PortfolioService : IPortfolioService
             StrategyId = request.strategyId,
             Name = request.name,
             Currency = request.currency,
-            TotalValue = (decimal)request.stocks.Sum(s => s.price * s.amount),
+            TotalValue = (decimal)(request.stocks?.Sum(s => s.price * s.amount) ?? 0),
             ReturnRate = 0,
             Status = "运行中",
             CreatedAt = DateTime.Now,
@@ -37,8 +37,13 @@ public class PortfolioService : IPortfolioService
         _db.Insertable(portfolio).ExecuteCommand();
 
         // 创建初始持仓
-        foreach (var stock in request.stocks)
+        foreach (var stock in request.stocks ?? new List<StockItem>())
         {
+            if (stock.code == null || stock.name == null)
+            {
+                continue;
+            }
+
             // 解析实际买入时间，如果解析失败则用当前时间
             DateTime buyTime = DateTime.Now;
             if (!string.IsNullOrEmpty(stock.date))
@@ -110,7 +115,7 @@ public class PortfolioService : IPortfolioService
             tags = $"{p.Status} · {p.Currency}",
             status = p.Status,
             statusType = p.Status == "运行中" ? "green" : "gray",
-            iconChar = p.Name.Substring(0, 1).ToUpper(),
+            iconChar = p.Name?.Substring(0, 1).ToUpper() ?? "P",
             iconBgClass = "bg-blue-100",
             iconTextClass = "text-blue-700",
             value = (double)p.TotalValue,
@@ -132,7 +137,7 @@ public class PortfolioService : IPortfolioService
             throw new Exception("User not found");
         }
 
-        string targetCurrency = user.DefaultCurrency;
+        string targetCurrency = user.DefaultCurrency ?? "CNY";
         decimal totalValueInTargetCurrency = 0;
         decimal totalCostInTargetCurrency = 0;
         decimal totalTodayProfitInTargetCurrency = 0;
@@ -151,9 +156,14 @@ public class PortfolioService : IPortfolioService
 
             foreach (var pos in positions)
             {
+                if (pos.StockCode == null || pos.Currency == null)
+                {
+                    continue;
+                }
+
                 // 获取实时价格
                 MarketPriceResponse priceResponse;
-                if (pos.AssetType.Equals("Crypto", StringComparison.OrdinalIgnoreCase))
+                if (pos.AssetType?.Equals("Crypto", StringComparison.OrdinalIgnoreCase) == true)
                 {
                     priceResponse = await _marketDataService.GetCryptoPriceAsync(pos.StockCode);
                 }
@@ -220,9 +230,14 @@ public class PortfolioService : IPortfolioService
 
         foreach (var pos in positions)
         {
+            if (pos.StockCode == null || pos.Currency == null)
+            {
+                continue;
+            }
+
             // 获取实时价格
             MarketPriceResponse priceResponse;
-            if (pos.AssetType.Equals("Crypto", StringComparison.OrdinalIgnoreCase))
+            if (pos.AssetType?.Equals("Crypto", StringComparison.OrdinalIgnoreCase) == true)
             {
                 priceResponse = await _marketDataService.GetCryptoPriceAsync(pos.StockCode);
             }
@@ -383,7 +398,7 @@ public class PortfolioService : IPortfolioService
             TotalAmount = (decimal)(request.price * request.amount),
             Currency = request.currency,
             Status = "completed",
-            Remark = request.remark,
+            Remark = request.remark ?? string.Empty,
             TransactionTime = transactionTime,
             CreatedAt = DateTime.Now
         };
@@ -445,9 +460,14 @@ public class PortfolioService : IPortfolioService
         decimal totalPortfolioValue = 0;
         foreach (var pos in positions)
         {
+            if (pos.StockCode == null)
+            {
+                continue;
+            }
+
             // 获取实时价格
             MarketPriceResponse priceResponse;
-            if (pos.AssetType.Equals("Crypto", StringComparison.OrdinalIgnoreCase))
+            if (pos.AssetType?.Equals("Crypto", StringComparison.OrdinalIgnoreCase) == true)
             {
                 priceResponse = _marketDataService.GetCryptoPriceAsync(pos.StockCode).GetAwaiter().GetResult();
             }
diff --git a/AssetManager.Services/Services/WechatService.cs b/AssetManager.Services/Services/WechatService.cs
index fd9e723..adb4698 100644
--- a/AssetManager.Services/Services/WechatService.cs
+++ b/AssetManager.Services/Services/WechatService.cs
@@ -23,15 +23,15 @@ public class WechatService
         var response = await _httpClient.GetAsync(url);
         response.EnsureSuccessStatusCode();
         var content = await response.Content.ReadAsStringAsync();
-        return JsonSerializer.Deserialize<WechatAuthResult>(content);
+        return JsonSerializer.Deserialize<WechatAuthResult>(content) ?? new WechatAuthResult();
     }
 }
 
 public class WechatAuthResult
 {
-    public string OpenId { get; set; }
-    public string SessionKey { get; set; }
-    public string UnionId { get; set; }
+    public string? OpenId { get; set; }
+    public string? SessionKey { get; set; }
+    public string? UnionId { get; set; }
     public int Errcode { get; set; }
-    public string Errmsg { get; set; }
+    public string? Errmsg { get; set; }
 }
\ No newline at end of file