添加项目文件。

MessageService.Infrastructure/Configs/ConversationConfig.cs

@@ -0,0 +1,17 @@
+using MessageService.Domain.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace MessageService.Infrastructure.Configs
+{
+    public class ConversationConfig : IEntityTypeConfiguration<Conversation>
+    {
+        public void Configure(EntityTypeBuilder<Conversation> builder)
+        {
+            builder.ToTable("conversations");
+            builder.HasKey(x => x.Id);
+            builder.HasIndex(x => x.UserId);
+
+        }
+    }
+}

MessageService.Infrastructure/Configs/MessageConfig.cs

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+using MessageService.Domain.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace MessageService.Infrastructure.Configs
+{
+    public class MessageConfig : IEntityTypeConfiguration<Message>
+    {
+        public void Configure(EntityTypeBuilder<Message> builder)
+        {
+            builder.ToTable("messages");
+            builder.HasKey(x => x.Id);
+            builder.HasIndex(x => new { x.StreamKey, x.SequenceId });
+            builder.ComplexProperty(x => x.Content, c =>
+            {
+                // 1. Fallback 是简单字符串，直接映射
+                c.Property(p => p.Fallback)
+                 .HasMaxLength(255)
+                 .IsRequired();
+
+                // 2. Body 是 object (JSON 载荷)
+                // ComplexProperty 无法直接处理 object 类型，通常将其序列化为 JSON 字符串存储
+                c.Property(p => p.RawBody)
+     .HasColumnName("Content_Body");
+
+                // 3. Ext 是 Dictionary<string, string>
+                // 同样推荐使用 HasConversion 映射为 JSON 字符串，或者在某些库中使用 JSONB 映射
+                // 映射 RawExt 字符串
+                c.Property(p => p.RawExt)
+                 .HasColumnName("Content_Ext");
+
+                // 4. Quote 是嵌套的值对象 (QuoteInfo)
+                // ComplexProperty 支持嵌套定义
+                c.ComplexProperty(p => p.Quote, q =>
+                {
+                    q.IsRequired(true); // 引用信息是可选的
+                    q.Property(qi => qi.MessageId).HasColumnName("Quote_MsgId");
+                    q.Property(qi => qi.SenderId).HasColumnName("Quote_SenderId");
+                    q.Property(qi => qi.SenderName).HasMaxLength(50).HasColumnName("Quote_SenderName");
+                    q.Property(qi => qi.MessageType).HasColumnName("Quote_MsgType");
+                    q.Property(qi => qi.Preview).HasMaxLength(100).HasColumnName("Quote_Preview");
+                });
+            });
+        }
+    }
+}