diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/enums/MallConstants.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/enums/MallConstants.java
deleted file mode 100644
index a32154ba4..000000000
--- a/common/common-framework/src/main/java/cn/iocoder/common/framework/enums/MallConstants.java
+++ /dev/null
@@ -1,44 +0,0 @@
-package cn.iocoder.common.framework.enums;
-
-/**
- * Mall 全局枚举
- */
-public interface MallConstants {
-
-    // 全局请求路径枚举类，用于定义不同用户类型的根请求路径
-    /**
-     * 根路径 - 用户
-     */
-    String ROOT_PATH_USER = "/users";
-    /**
-     * 根路径 - 管理员
-     */
-    String ROOT_PATH_ADMIN = "/admins";
-
-    // 用户类型
-    /**
-     * 用户类型 - 用户
-     */
-    @Deprecated
-    Integer USER_TYPE_USER = 1;
-    /**
-     * 用户类型 - 管理员
-     */
-    @Deprecated
-    Integer USER_TYPE_ADMIN = 2;
-
-    // HTTP Request Attr
-    /**
-     * HTTP Request Attr - 用户编号
-     */
-    String REQUEST_ATTR_USER_ID_KEY = "mall_user_id";
-    /**
-     * HTTP Request Attr - 用户类型
-     */
-    String REQUEST_ATTR_USER_TYPE_KEY = "mall_user_type";
-    /**
-     * HTTP Request Attr - Controller 执行返回
-     */
-    String REQUEST_ATTR_COMMON_RESULT = "mall_common_result";
-
-}
diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/enums/ModuleErrorCodeInterval.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/enums/ModuleErrorCodeInterval.java
deleted file mode 100644
index 457fc0d6e..000000000
--- a/common/common-framework/src/main/java/cn/iocoder/common/framework/enums/ModuleErrorCodeInterval.java
+++ /dev/null
@@ -1,35 +0,0 @@
-package cn.iocoder.common.framework.enums;
-
-/**
- * 模块错误码区间
- *
- *  解决：解决各模块错误码定义，避免重复，在此只声明不做实际使用
- *
- *
- *  错误码定义说明：
- *
- *      [0-000-000-000] 1 开头，给业务系统，2 开头，给框架使用
- *
- *      如：用户系统，使用 1-001-000-000 段
- *
- * @author Sin
- * @time 2019-03-23 11:28
- */
-public class ModuleErrorCodeInterval {
-
-    // order 错误码区间 [1-000-001-000 ~ 1-000-002-000]
-
-    // user 错误码区间 [1-001-000-000 ~ 1-002-000-000)
-
-    // admin 错误码区间 [1-002-000-000 ~ 1-003-000-000)
-
-    // product 错误码区间 [1-003-000-000 ~ 1-004-000-000)
-
-    // pay 错误码区间 [1-004-000-000 ~ 1-005-000-000)
-
-    // cart 错误码区间 [1-005-000-000 ~ 1-006-000-000)
-
-    // promotion 错误码区间 [1-006-000-000 ~ 1-007-000-000)
-
-
-}
diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/ErrorCode.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/ErrorCode.java
new file mode 100644
index 000000000..c6fdf019b
--- /dev/null
+++ b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/ErrorCode.java
@@ -0,0 +1,37 @@
+package cn.iocoder.common.framework.exception;
+
+import cn.iocoder.common.framework.exception.enums.ServiceErrorCodeRange;
+
+/**
+ * 错误码对象
+ *
+ * 全局错误码，占用 [0, 999]，参见 {@link GlobalException}
+ * 业务异常错误码，占用 [1 000 000 000, +∞)，参见 {@link ServiceErrorCodeRange}
+ *
+ * TODO 错误码设计成对象的原因，为未来的 i18 国际化做准备
+ */
+public class ErrorCode {
+
+    /**
+     * 错误码
+     */
+    private final Integer code;
+    /**
+     * 错误提示
+     */
+    private final String message;
+
+    public ErrorCode(Integer code, String message) {
+        this.code = code;
+        this.message = message;
+    }
+
+    public Integer getCode() {
+        return code;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+}
diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/GlobalException.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/GlobalException.java
new file mode 100644
index 000000000..615007191
--- /dev/null
+++ b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/GlobalException.java
@@ -0,0 +1,41 @@
+package cn.iocoder.common.framework.exception;
+
+import cn.iocoder.common.framework.exception.enums.GlobalErrorCodeEnum;
+import cn.iocoder.common.framework.vo.CommonResult;
+
+/**
+ * 全局异常 Exception
+ */
+public class GlobalException extends RuntimeException {
+
+    /**
+     * 全局错误码
+     *
+     * @see GlobalErrorCodeEnum
+     */
+    private final Integer code;
+    /**
+     * 错误明细，内部调试错误
+     *    * 和 {@link CommonResult#getDetailMessage()} 一致的设计
+     */
+    private String detailMessage;
+
+    public GlobalException(Integer code, String message) {
+        super(message);
+        this.code = code;
+    }
+
+    public Integer getCode() {
+        return code;
+    }
+
+    public String getDetailMessage() {
+        return detailMessage;
+    }
+
+    public GlobalException setDetailMessage(String detailMessage) {
+        this.detailMessage = detailMessage;
+        return this;
+    }
+
+}
diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/ServiceException.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/ServiceException.java
index 267ba934c..e2a72a93c 100644
--- a/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/ServiceException.java
+++ b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/ServiceException.java
@@ -1,9 +1,10 @@
 package cn.iocoder.common.framework.exception;
 
+import cn.iocoder.common.framework.exception.enums.ServiceErrorCodeRange;
 import cn.iocoder.common.framework.vo.CommonResult;
 
 /**
- * 服务异常
+ * 业务逻辑异常 Exception
  *
  * 参考 https://www.kancloud.cn/onebase/ob/484204 文章
  *
@@ -32,7 +33,9 @@ import cn.iocoder.common.framework.vo.CommonResult;
 public final class ServiceException extends RuntimeException {
 
     /**
-     * 错误码
+     * 业务错误码
+     *
+     * @see ServiceErrorCodeRange
      */
     private final Integer code;
     /**
diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/enums/GlobalErrorCodeEnum.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/enums/GlobalErrorCodeEnum.java
similarity index 93%
rename from common/common-framework/src/main/java/cn/iocoder/common/framework/enums/GlobalErrorCodeEnum.java
rename to common/common-framework/src/main/java/cn/iocoder/common/framework/exception/enums/GlobalErrorCodeEnum.java
index b948cda81..9774c31a8 100644
--- a/common/common-framework/src/main/java/cn/iocoder/common/framework/enums/GlobalErrorCodeEnum.java
+++ b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/enums/GlobalErrorCodeEnum.java
@@ -1,10 +1,10 @@
-package cn.iocoder.common.framework.enums;
+package cn.iocoder.common.framework.exception.enums;
 
 import cn.iocoder.common.framework.util.ServiceExceptionUtil;
 
 /**
  * 全局错误码枚举
- * 1-999 系统异常编码保留
+ * 0-999 系统异常编码保留
  *
  * 一般情况下，{@link GlobalErrorCodeEnum#getCode()} ()} 使用 HTTP 响应状态码 https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Status
  * 虽然说，HTTP 响应状态码作为业务使用表达能力偏弱，但是使用在系统层面还是非常不错的
diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/enums/ServiceErrorCodeRange.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/enums/ServiceErrorCodeRange.java
new file mode 100644
index 000000000..9c759f885
--- /dev/null
+++ b/common/common-framework/src/main/java/cn/iocoder/common/framework/exception/enums/ServiceErrorCodeRange.java
@@ -0,0 +1,47 @@
+package cn.iocoder.common.framework.exception.enums;
+
+/**
+ * 业务异常的错误码区间，解决：解决各模块错误码定义，避免重复，在此只声明不做实际使用
+ *
+ * 一共 10 位，分成四段
+ *
+ * 第一段，1 位，类型
+ *      1 - 业务级别异常
+ *      x - 预留
+ * 第二段，3 位，系统类型
+ *      001 - 用户系统
+ *      002 - 商品系统
+ *      003 - 订单系统
+ *      004 - 支付系统
+ *      005 - 优惠劵系统
+ *      ... - ...
+ * 第三段，3 位，模块
+ *      不限制规则。
+ *      一般建议，每个系统里面，可能有多个模块，可以再去做分段。以用户系统为例子：
+ *          001 - OAuth2 模块
+ *          002 - User 模块
+ *          003 - MobileCode 模块
+ * 第四段，3 位，错误码
+ *       不限制规则。
+ *       一般建议，每个模块自增。
+ *
+ * @author Sin
+ * @time 2019-03-23 11:28
+ */
+public class ServiceErrorCodeRange {
+
+    // order 错误码区间 [1-000-001-000 ~ 1-000-002-000]
+
+    // user 错误码区间 [1-001-000-000 ~ 1-002-000-000)
+
+    // system-service 服务 => 错误码区间 [1-002-000-000 ~ 1-003-000-000)
+
+    // product 错误码区间 [1-003-000-000 ~ 1-004-000-000)
+
+    // pay 错误码区间 [1-004-000-000 ~ 1-005-000-000)
+
+    // cart 错误码区间 [1-005-000-000 ~ 1-006-000-000)
+
+    // promotion 错误码区间 [1-006-000-000 ~ 1-007-000-000)
+
+}
diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/util/MallUtils.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/util/MallUtils.java
index d28e3e319..1205c5aec 100644
--- a/common/common-framework/src/main/java/cn/iocoder/common/framework/util/MallUtils.java
+++ b/common/common-framework/src/main/java/cn/iocoder/common/framework/util/MallUtils.java
@@ -1,40 +1,11 @@
 package cn.iocoder.common.framework.util;
 
-import cn.iocoder.common.framework.enums.MallConstants;
-import cn.iocoder.common.framework.vo.CommonResult;
 import org.apache.skywalking.apm.toolkit.trace.TraceContext;
 
-import javax.servlet.ServletRequest;
 import java.util.UUID;
 
 public class MallUtils {
 
-    public static Integer getUserId(ServletRequest request) {
-        return (Integer) request.getAttribute(MallConstants.REQUEST_ATTR_USER_ID_KEY);
-    }
-
-    public static void setUserId(ServletRequest request, Integer userId) {
-        request.setAttribute(MallConstants.REQUEST_ATTR_USER_ID_KEY, userId);
-    }
-
-    public static Integer getUserType(ServletRequest request) {
-        return (Integer) request.getAttribute(MallConstants.REQUEST_ATTR_USER_TYPE_KEY);
-    }
-
-    public static void setUserType(ServletRequest request, Integer userType) {
-        request.setAttribute(MallConstants.REQUEST_ATTR_USER_TYPE_KEY, userType);
-    }
-
-    @Deprecated
-    public static CommonResult getCommonResult(ServletRequest request) {
-        return (CommonResult) request.getAttribute(MallConstants.REQUEST_ATTR_COMMON_RESULT);
-    }
-
-    @Deprecated
-    public static void setCommonResult(ServletRequest request, CommonResult result) {
-        request.setAttribute(MallConstants.REQUEST_ATTR_COMMON_RESULT, result);
-    }
-
     /**
      * 获得链路追踪编号
      *
diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/util/ServiceExceptionUtil.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/util/ServiceExceptionUtil.java
index d3b8642d6..e9df095ef 100644
--- a/common/common-framework/src/main/java/cn/iocoder/common/framework/util/ServiceExceptionUtil.java
+++ b/common/common-framework/src/main/java/cn/iocoder/common/framework/util/ServiceExceptionUtil.java
@@ -52,10 +52,13 @@ public class ServiceExceptionUtil {
     public static void put(Integer code, String message) {
         ServiceExceptionUtil.messages.put(code, message);
     }
+
     public static void delete(Integer code, String message) {
         ServiceExceptionUtil.messages.remove(code, message);
     }
 
+    // ========== 和 CommonResult 的集成 ==========
+
     public static <T> CommonResult<T> error(Enumerable enumerable) {
         return error(enumerable.getCode());
     }
@@ -73,6 +76,8 @@ public class ServiceExceptionUtil {
         return CommonResult.error(code, message);
     }
 
+    // ========== 和 ServiceException 的集成 ==========
+
     public static ServiceException exception(Enumerable enumerable) {
         String messagePattern = messages.getOrDefault(enumerable.getCode(), enumerable.getMessage());
         return exception0(enumerable.getCode(), messagePattern);
diff --git a/common/common-framework/src/main/java/cn/iocoder/common/framework/vo/CommonResult.java b/common/common-framework/src/main/java/cn/iocoder/common/framework/vo/CommonResult.java
index 1fb1d0158..c6972ffe9 100644
--- a/common/common-framework/src/main/java/cn/iocoder/common/framework/vo/CommonResult.java
+++ b/common/common-framework/src/main/java/cn/iocoder/common/framework/vo/CommonResult.java
@@ -1,6 +1,7 @@
 package cn.iocoder.common.framework.vo;
 
-import cn.iocoder.common.framework.enums.GlobalErrorCodeEnum;
+import cn.iocoder.common.framework.exception.ErrorCode;
+import cn.iocoder.common.framework.exception.enums.GlobalErrorCodeEnum;
 import cn.iocoder.common.framework.util.ServiceExceptionUtil;
 import com.alibaba.fastjson.annotation.JSONField;
 import org.springframework.util.Assert;
@@ -18,6 +19,8 @@ public final class CommonResult<T> implements Serializable {
 
     /**
      * 错误码
+     *
+     * @see ErrorCode#getCode()
      */
     private Integer code;
     /**
@@ -26,6 +29,8 @@ public final class CommonResult<T> implements Serializable {
     private T data;
     /**
      * 错误提示，用户可阅读
+     *
+     * @see ErrorCode#getMsg()
      */
     private String message;
     /**
diff --git a/common/mall-spring-boot-starter-dubbo/src/main/java/cn/iocoder/mall/dubbo/core/filter/DubboProviderExceptionFilter.java b/common/mall-spring-boot-starter-dubbo/src/main/java/cn/iocoder/mall/dubbo/core/filter/DubboProviderExceptionFilter.java
index 7bc5aca09..d2fd83373 100644
--- a/common/mall-spring-boot-starter-dubbo/src/main/java/cn/iocoder/mall/dubbo/core/filter/DubboProviderExceptionFilter.java
+++ b/common/mall-spring-boot-starter-dubbo/src/main/java/cn/iocoder/mall/dubbo/core/filter/DubboProviderExceptionFilter.java
@@ -1,6 +1,6 @@
 package cn.iocoder.mall.dubbo.core.filter;
 
-import cn.iocoder.common.framework.enums.GlobalErrorCodeEnum;
+import cn.iocoder.common.framework.exception.enums.GlobalErrorCodeEnum;
 import cn.iocoder.common.framework.exception.ServiceException;
 import cn.iocoder.common.framework.util.ExceptionUtil;
 import cn.iocoder.common.framework.util.ServiceExceptionUtil;
diff --git a/common/mall-spring-boot-starter-security-admin/src/main/java/cn/iocoder/mall/security/admin/core/interceptor/AdminSecurityInterceptor.java b/common/mall-spring-boot-starter-security-admin/src/main/java/cn/iocoder/mall/security/admin/core/interceptor/AdminSecurityInterceptor.java
index baff3997b..617ceb76a 100644
--- a/common/mall-spring-boot-starter-security-admin/src/main/java/cn/iocoder/mall/security/admin/core/interceptor/AdminSecurityInterceptor.java
+++ b/common/mall-spring-boot-starter-security-admin/src/main/java/cn/iocoder/mall/security/admin/core/interceptor/AdminSecurityInterceptor.java
@@ -1,6 +1,6 @@
 package cn.iocoder.mall.security.admin.core.interceptor;
 
-import cn.iocoder.common.framework.enums.GlobalErrorCodeEnum;
+import cn.iocoder.common.framework.exception.enums.GlobalErrorCodeEnum;
 import cn.iocoder.common.framework.enums.UserTypeEnum;
 import cn.iocoder.common.framework.util.CollectionUtils;
 import cn.iocoder.common.framework.util.HttpUtil;
diff --git a/common/mall-spring-boot-starter-security-user/src/main/java/cn/iocoder/mall/security/user/core/interceptor/UserSecurityInterceptor.java b/common/mall-spring-boot-starter-security-user/src/main/java/cn/iocoder/mall/security/user/core/interceptor/UserSecurityInterceptor.java
index 14033d8bb..a3b1f4af9 100644
--- a/common/mall-spring-boot-starter-security-user/src/main/java/cn/iocoder/mall/security/user/core/interceptor/UserSecurityInterceptor.java
+++ b/common/mall-spring-boot-starter-security-user/src/main/java/cn/iocoder/mall/security/user/core/interceptor/UserSecurityInterceptor.java
@@ -1,6 +1,6 @@
 package cn.iocoder.mall.security.user.core.interceptor;
 
-import cn.iocoder.common.framework.enums.GlobalErrorCodeEnum;
+import cn.iocoder.common.framework.exception.enums.GlobalErrorCodeEnum;
 import cn.iocoder.common.framework.enums.UserTypeEnum;
 import cn.iocoder.common.framework.util.HttpUtil;
 import cn.iocoder.common.framework.util.ServiceExceptionUtil;
diff --git a/common/mall-spring-boot-starter-web/src/main/java/cn/iocoder/mall/web/core/handler/GlobalExceptionHandler.java b/common/mall-spring-boot-starter-web/src/main/java/cn/iocoder/mall/web/core/handler/GlobalExceptionHandler.java
index 138030c6f..eec4f6579 100644
--- a/common/mall-spring-boot-starter-web/src/main/java/cn/iocoder/mall/web/core/handler/GlobalExceptionHandler.java
+++ b/common/mall-spring-boot-starter-web/src/main/java/cn/iocoder/mall/web/core/handler/GlobalExceptionHandler.java
@@ -1,6 +1,6 @@
 package cn.iocoder.mall.web.core.handler;
 
-import cn.iocoder.common.framework.enums.GlobalErrorCodeEnum;
+import cn.iocoder.common.framework.exception.enums.GlobalErrorCodeEnum;
 import cn.iocoder.common.framework.exception.ServiceException;
 import cn.iocoder.common.framework.util.ExceptionUtil;
 import cn.iocoder.common.framework.util.HttpUtil;
diff --git a/system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/manager/permission/PermissionManager.java b/system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/manager/permission/PermissionManager.java
index 8e6a8ca96..d4f8b565b 100644
--- a/system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/manager/permission/PermissionManager.java
+++ b/system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/manager/permission/PermissionManager.java
@@ -18,7 +18,7 @@ import java.util.Collections;
 import java.util.Map;
 import java.util.Set;
 
-import static cn.iocoder.common.framework.enums.GlobalErrorCodeEnum.FORBIDDEN;
+import static cn.iocoder.common.framework.exception.enums.GlobalErrorCodeEnum.FORBIDDEN;
 
 /**
  * 权限 Manager
diff --git a/system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/service/permission/PermissionService.java b/system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/service/permission/PermissionService.java
index 7c1f195d5..d757f9251 100644
--- a/system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/service/permission/PermissionService.java
+++ b/system-service-project/system-service-app/src/main/java/cn/iocoder/mall/systemservice/service/permission/PermissionService.java
@@ -21,7 +21,7 @@ import org.springframework.transaction.annotation.Transactional;
 import java.util.*;
 import java.util.stream.Collectors;
 
-import static cn.iocoder.common.framework.enums.GlobalErrorCodeEnum.FORBIDDEN;
+import static cn.iocoder.common.framework.exception.enums.GlobalErrorCodeEnum.FORBIDDEN;
 import static cn.iocoder.mall.systemservice.enums.SystemErrorCodeEnum.*;
 
 /**