wu-sheng commented on code in PR #704:
URL: https://github.com/apache/skywalking-java/pull/704#discussion_r1671599468


##########
apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/src/main/java/org/apache/skywalking/apm/plugin/spring/mvc/commons/interceptor/AbstractMethodInterceptor.java:
##########
@@ -111,7 +84,7 @@ public void beforeMethod(EnhancedInstance objInst, Method 
method, Object[] allAr
             if (stackDepth == null) {
                 final ContextCarrier contextCarrier = new ContextCarrier();
 
-                if (IN_SERVLET_CONTAINER && IS_JAVAX && 
HttpServletRequest.class.isAssignableFrom(request.getClass())) {
+                if (isAssignableFrom(JAVAX_SERVLET_REQUEST_CLASS, 
request.getClass())) {

Review Comment:
   If isAssignableFrom executes every time, you will slow the whole process.



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