diff --git a/src/main/java/com/bruce/common/entity/SysAttachment.java b/src/main/java/com/bruce/common/domain/entity/SysAttachment.java
similarity index 94%
rename from src/main/java/com/bruce/common/entity/SysAttachment.java
rename to src/main/java/com/bruce/common/domain/entity/SysAttachment.java
index 64534b6..b190d37 100644
--- a/src/main/java/com/bruce/common/entity/SysAttachment.java
+++ b/src/main/java/com/bruce/common/domain/entity/SysAttachment.java
@@ -1,7 +1,8 @@
-package com.bruce.common.entity;
+package com.bruce.common.domain.entity;
 
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableName;
+import com.bruce.common.domain.model.BaseEntity;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
diff --git a/src/main/java/com/bruce/common/entity/SysEnum.java b/src/main/java/com/bruce/common/domain/entity/SysEnum.java
similarity index 90%
rename from src/main/java/com/bruce/common/entity/SysEnum.java
rename to src/main/java/com/bruce/common/domain/entity/SysEnum.java
index 2333072..2a7a823 100644
--- a/src/main/java/com/bruce/common/entity/SysEnum.java
+++ b/src/main/java/com/bruce/common/domain/entity/SysEnum.java
@@ -1,6 +1,7 @@
-package com.bruce.common.entity;
+package com.bruce.common.domain.entity;
 
 import com.baomidou.mybatisplus.annotation.TableName;
+import com.bruce.common.domain.model.BaseEntity;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
diff --git a/src/main/java/com/bruce/common/entity/BaseEntity.java b/src/main/java/com/bruce/common/domain/model/BaseEntity.java
similarity index 96%
rename from src/main/java/com/bruce/common/entity/BaseEntity.java
rename to src/main/java/com/bruce/common/domain/model/BaseEntity.java
index b999c54..7b9fd86 100644
--- a/src/main/java/com/bruce/common/entity/BaseEntity.java
+++ b/src/main/java/com/bruce/common/domain/model/BaseEntity.java
@@ -1,4 +1,4 @@
-package com.bruce.common.entity;
+package com.bruce.common.domain.model;
 
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableField;
diff --git a/src/main/java/com/bruce/common/domain/model/RequestResult.java b/src/main/java/com/bruce/common/domain/model/RequestResult.java
new file mode 100644
index 0000000..d829176
--- /dev/null
+++ b/src/main/java/com/bruce/common/domain/model/RequestResult.java
@@ -0,0 +1,59 @@
+package com.bruce.common.domain.model;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class RequestResult<T> {
+
+    public static final String FAIL_CODE = "-1";
+
+    public static final String SUCCESS_CODE = "0";
+
+    @Schema(description = "错误消息")
+    private String message;
+
+    @Schema(description = "消息代码")
+    private String resultcode;
+
+    @Schema(description = "数据")
+    private T data;
+
+    public RequestResult(T data) {
+        this.resultcode = SUCCESS_CODE;
+        this.data = data;
+    }
+
+    public static <T> RequestResult<T> success() {
+        return build(SUCCESS_CODE, null, null);
+    }
+
+    public static <T> RequestResult<T> success(T data) {
+        return build(SUCCESS_CODE, null, data);
+    }
+
+    public static <T> RequestResult<T> success(String message, T data) {
+        return build(SUCCESS_CODE, message, data);
+    }
+
+    public static <T> RequestResult<T> fail(String message) {
+        return build(FAIL_CODE, message, null);
+    }
+
+    public static <T> RequestResult<T> fail(String resultcode, String message) {
+        return build(resultcode, message, null);
+    }
+
+    private static <T> RequestResult<T> build(String resultcode, String message, T data) {
+        RequestResult<T> result = new RequestResult<>();
+        result.setResultcode(resultcode);
+        result.setMessage(message);
+        result.setData(data);
+        return result;
+    }
+
+}
diff --git a/src/main/java/com/bruce/common/mapper/SysAttachmentMapper.java b/src/main/java/com/bruce/common/mapper/SysAttachmentMapper.java
index a78cf1e..521623e 100644
--- a/src/main/java/com/bruce/common/mapper/SysAttachmentMapper.java
+++ b/src/main/java/com/bruce/common/mapper/SysAttachmentMapper.java
@@ -1,7 +1,7 @@
 package com.bruce.common.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
-import com.bruce.common.entity.SysAttachment;
+import com.bruce.common.domain.entity.SysAttachment;
 import org.apache.ibatis.annotations.Mapper;
 
 @Mapper
diff --git a/src/main/java/com/bruce/common/mapper/SysEnumMapper.java b/src/main/java/com/bruce/common/mapper/SysEnumMapper.java
index 6e3e4a2..2251367 100644
--- a/src/main/java/com/bruce/common/mapper/SysEnumMapper.java
+++ b/src/main/java/com/bruce/common/mapper/SysEnumMapper.java
@@ -1,7 +1,7 @@
 package com.bruce.common.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
-import com.bruce.common.entity.SysEnum;
+import com.bruce.common.domain.entity.SysEnum;
 import org.apache.ibatis.annotations.Mapper;
 
 @Mapper
diff --git a/src/main/java/com/bruce/rag/entity/RagDocument.java b/src/main/java/com/bruce/rag/entity/RagDocument.java
index 5f07d5a..efa3d2f 100644
--- a/src/main/java/com/bruce/rag/entity/RagDocument.java
+++ b/src/main/java/com/bruce/rag/entity/RagDocument.java
@@ -2,7 +2,7 @@ package com.bruce.rag.entity;
 
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableName;
-import com.bruce.common.entity.BaseEntity;
+import com.bruce.common.domain.model.BaseEntity;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
diff --git a/src/main/java/com/bruce/rag/entity/RagStore.java b/src/main/java/com/bruce/rag/entity/RagStore.java
index f4b25ea..6aa3f3a 100644
--- a/src/main/java/com/bruce/rag/entity/RagStore.java
+++ b/src/main/java/com/bruce/rag/entity/RagStore.java
@@ -1,7 +1,7 @@
 package com.bruce.rag.entity;
 
 import com.baomidou.mybatisplus.annotation.TableName;
-import com.bruce.common.entity.BaseEntity;
+import com.bruce.common.domain.model.BaseEntity;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
diff --git a/src/test/java/com/bruce/common/entity/EntityStructureTests.java b/src/test/java/com/bruce/common/entity/EntityStructureTests.java
index b95b58e..7467916 100644
--- a/src/test/java/com/bruce/common/entity/EntityStructureTests.java
+++ b/src/test/java/com/bruce/common/entity/EntityStructureTests.java
@@ -3,6 +3,9 @@ package com.bruce.common.entity;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.Version;
+import com.bruce.common.domain.model.BaseEntity;
+import com.bruce.common.domain.entity.SysAttachment;
+import com.bruce.common.domain.entity.SysEnum;
 import io.swagger.v3.oas.annotations.media.Schema;
 import org.junit.jupiter.api.Test;
 
diff --git a/src/test/java/com/bruce/common/enumconfig/SysEnumDataInitTests.java b/src/test/java/com/bruce/common/enumconfig/SysEnumDataInitTests.java
index e84c1a7..8eb7e5d 100644
--- a/src/test/java/com/bruce/common/enumconfig/SysEnumDataInitTests.java
+++ b/src/test/java/com/bruce/common/enumconfig/SysEnumDataInitTests.java
@@ -1,7 +1,7 @@
 package com.bruce.common.enumconfig;
 
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
-import com.bruce.common.entity.SysEnum;
+import com.bruce.common.domain.entity.SysEnum;
 import com.bruce.common.enums.CommonStatusEnum;
 import com.bruce.common.enums.EnableStatusEnum;
 import com.bruce.common.service.ISysEnumService;
diff --git a/src/test/java/com/bruce/common/model/RequestResultStructureTests.java b/src/test/java/com/bruce/common/model/RequestResultStructureTests.java
new file mode 100644
index 0000000..ed2912c
--- /dev/null
+++ b/src/test/java/com/bruce/common/model/RequestResultStructureTests.java
@@ -0,0 +1,55 @@
+package com.bruce.common.model;
+
+import com.bruce.common.domain.model.RequestResult;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+class RequestResultStructureTests {
+
+    @Test
+    void dataConstructorShouldDefaultToSuccessCode() {
+        RequestResult<String> result = new RequestResult<>("payload");
+
+        assertEquals(RequestResult.SUCCESS_CODE, result.getResultcode());
+        assertNull(result.getMessage());
+        assertEquals("payload", result.getData());
+    }
+
+    @Test
+    void successFactoryShouldBuildSuccessfulResult() {
+        RequestResult<String> result = RequestResult.success("payload");
+
+        assertEquals(RequestResult.SUCCESS_CODE, result.getResultcode());
+        assertNull(result.getMessage());
+        assertEquals("payload", result.getData());
+    }
+
+    @Test
+    void successFactoryWithMessageShouldKeepCustomMessage() {
+        RequestResult<String> result = RequestResult.success("操作成功", "payload");
+
+        assertEquals(RequestResult.SUCCESS_CODE, result.getResultcode());
+        assertEquals("操作成功", result.getMessage());
+        assertEquals("payload", result.getData());
+    }
+
+    @Test
+    void failFactoryShouldBuildFailureResult() {
+        RequestResult<Void> result = RequestResult.fail("校验失败");
+
+        assertEquals(RequestResult.FAIL_CODE, result.getResultcode());
+        assertEquals("校验失败", result.getMessage());
+        assertNull(result.getData());
+    }
+
+    @Test
+    void failFactoryWithCustomCodeShouldKeepCustomCode() {
+        RequestResult<Void> result = RequestResult.fail("VALIDATE_ERROR", "校验失败");
+
+        assertEquals("VALIDATE_ERROR", result.getResultcode());
+        assertEquals("校验失败", result.getMessage());
+        assertNull(result.getData());
+    }
+}