diff --git a/src/main/java/com/yunhai/userbase/aspect/OapiLogAspect.java b/src/main/java/com/yunhai/userbase/aspect/OapiLogAspect.java
index 965e96e..c204f7b 100644
--- a/src/main/java/com/yunhai/userbase/aspect/OapiLogAspect.java
+++ b/src/main/java/com/yunhai/userbase/aspect/OapiLogAspect.java
@@ -1,7 +1,9 @@
 package com.yunhai.userbase.aspect;
 
-import com.alibaba.fastjson.JSON;
+import com.yunhai.platform.apistd.ApiResponse;
+import com.yunhai.platform.apistd.BizException;
 import com.yunhai.platform.appauth.AppAuthFilter;
+import com.yunhai.platform.utils.exception.DException;
 import com.yunhai.userbase.common.annotation.OapiLog;
 import com.yunhai.userbase.entity.ApplicationInfo;
 import com.yunhai.userbase.entity.SysOapiLog;
@@ -90,6 +92,8 @@ public class OapiLogAspect {
         } catch (Throwable e) {
             entity.setStatusCode(500);
             entity.setErrorMsg(truncate(e.getMessage(), 2000));
+            // 业务异常（DException/BizException）同样构造实际返回的响应体落库，便于详情下载
+            fillErrorResponse(entity, e, saveResponse, maxResponseSize);
             throw e;
         } finally {
             entity.setCostTime(System.currentTimeMillis() - start);
@@ -213,8 +217,42 @@ public class OapiLogAspect {
         if (!saveResponse || result == null) {
             return;
         }
+        writeResponseData(entity, result, maxResponseSize);
+    }
+
+    /**
+     * 异常路径：与 {@code GlobalExceptionHandler} 保持一致的响应体（DException/BizException → ApiResponse），
+     * 使日志下载内容等于调用方实际收到的 body；其余异常不构造（响应不可预期）。
+     */
+    private void fillErrorResponse(SysOapiLog entity, Throwable e, boolean saveResponse, int maxResponseSize) {
+        if (!saveResponse) {
+            return;
+        }
+        ApiResponse<?> response = toApiResponse(e);
+        if (response == null) {
+            return;
+        }
+        writeResponseData(entity, response, maxResponseSize);
+    }
+
+    private ApiResponse<?> toApiResponse(Throwable e) {
+        if (e instanceof DException) {
+            DException de = (DException) e;
+            return ApiResponse.fail(de.getCode(), de.getMessage(), de.getData());
+        }
+        if (e instanceof BizException) {
+            BizException be = (BizException) e;
+            return ApiResponse.fail(be.getErrorCode(), be.getMessage());
+        }
+        return null;
+    }
+
+    private void writeResponseData(SysOapiLog entity, Object payload, int maxResponseSize) {
+        if (payload == null) {
+            return;
+        }
         try {
-            String resp = SensitiveDataMasker.maskObject(result);
+            String resp = SensitiveDataMasker.maskObject(payload);
             if (resp == null) {
                 return;
             }
diff --git a/src/main/java/com/yunhai/userbase/common/GlobalExceptionHandler.java b/src/main/java/com/yunhai/userbase/common/GlobalExceptionHandler.java
index 32b2632..2e740f9 100644
--- a/src/main/java/com/yunhai/userbase/common/GlobalExceptionHandler.java
+++ b/src/main/java/com/yunhai/userbase/common/GlobalExceptionHandler.java
@@ -5,8 +5,10 @@ import org.springframework.core.annotation.Order;
 import org.springframework.validation.BindException;
 import org.springframework.validation.FieldError;
 import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.MissingServletRequestParameterException;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.method.annotation.MethodArgumentTypeMismatchException;
 
 import javax.validation.ConstraintViolation;
 import javax.validation.ConstraintViolationException;
@@ -52,6 +54,18 @@ public class GlobalExceptionHandler {
         return paramError(msg);
     }
 
+    /** 缺少必需的请求参数（@RequestParam 必填项未传，如 oapi 调用方漏传 groupId）。 */
+    @ExceptionHandler(MissingServletRequestParameterException.class)
+    public Map<String, Object> handleMissingParam(MissingServletRequestParameterException ex) {
+        return paramError("缺少必需的请求参数: " + ex.getParameterName());
+    }
+
+    /** 请求参数类型不匹配（如 Integer 参数收到非数字字符串）。 */
+    @ExceptionHandler(MethodArgumentTypeMismatchException.class)
+    public Map<String, Object> handleTypeMismatch(MethodArgumentTypeMismatchException ex) {
+        return paramError("参数类型不匹配: " + ex.getName());
+    }
+
     private String fieldErrorsMessage(java.util.List<FieldError> fieldErrors) {
         if (fieldErrors == null || fieldErrors.isEmpty()) {
             return "参数校验失败";