模块化

Service/Implement/UserService.cs

@@ -0,0 +1,90 @@
+using Model;
+using Model.Entity;
+using ORM;
+using Service.Implement;
+
+public class UserService: BaseService<UserEntity>
+{
+    public UserService(SqlSugarRepository<UserEntity> repository) : base(repository)
+    {
+    }
+
+    public async Task<Result<UserEntity>> GetUserByUserNameAsync(string username)
+    {
+        if (string.IsNullOrWhiteSpace(username))
+            return Result<UserEntity>.Error("用户名不能为空");
+
+        try
+        {
+            var user = await _repository.Entities
+                .Where(x => x.UserName == username)
+                .FirstAsync();
+
+            if (user == null)
+                return Result<UserEntity>.Error("用户不存在");
+
+            return Result<UserEntity>.Success(user);
+        }
+        catch (Exception ex)
+        {
+            return Result<UserEntity>.Error("获取用户失败", ex);
+        }
+    }
+
+    public override async Task<Result<bool>> InsertAsync(UserEntity entity)
+    {
+        if (entity == null)
+            return Result<bool>.Error("用户数据不能为空");
+
+        try
+        {
+            // 唯一性校验
+            bool exists = await _repository.Entities
+                .AnyAsync(x => x.UserName == entity.UserName);
+
+            if (exists)
+                return Result<bool>.Error("用户名已存在");
+
+            var result = await _repository.InsertAsync(entity);
+
+            return Result<bool>.Success(result);
+        }
+        catch (Exception ex)
+        {
+            return Result<bool>.Error("插入数据失败", ex);
+        }
+    }
+    /// <summary>
+    /// 更新单条用户记录
+    /// </summary>
+    /// <param name="entity">要更新的用户实体，Id 必须有值</param>
+    public async Task<Result<bool>> UpdateAsync(UserEntity entity)
+    {
+        if (entity == null)
+            return Result<bool>.Error("用户数据不能为空");
+
+        if (entity.Id <= 0)
+            return Result<bool>.Error("主键 Id 无效，无法更新");
+
+        try
+        {
+            // 唯一性校验（可选，如果允许改用户名就检查）
+            bool exists = await _repository.Entities
+                .Where(x => x.UserName == entity.UserName && x.Id != entity.Id)
+                .AnyAsync();
+
+            if (exists)
+                return Result<bool>.Error("用户名已存在");
+
+            // 更新整个实体
+            var result = await _repository.UpdateAsync(entity);
+
+            return Result<bool>.Success(result);
+        }
+        catch (Exception ex)
+        {
+            return Result<bool>.Error("更新用户失败", ex);
+        }
+    }
+
+}