lujiajing1126 commented on code in PR #739:
URL: https://github.com/apache/skywalking-java/pull/739#discussion_r2068184158


##########
apm-sniffer/apm-sdk-plugin/spring-plugins/core-patch/src/test/java/org/apache/skywalking/apm/plugin/spring/patch/CreateAopProxyInterceptorTest.java:
##########
@@ -48,18 +49,69 @@ public void setUp() {
     }
 
     @Test
-    public void testInterceptNormalObject() throws Throwable {
-        doReturn(Object.class).when(advisedSupport).getTargetClass();
+    public void testInterceptClassImplementsNoInterfaces() throws Throwable {
+        // doReturn(Object.class).when(advisedSupport).getTargetClass();
+        // 
doReturn(Object.class.getInterfaces()).when(advisedSupport).getProxiedInterfaces();
+        assertThat(true, is(interceptor.afterMethod(enhancedInstance, null, 
new Object[] {advisedSupport}, new Class[] {Object.class}, true)));
+    }
+
+    @Test
+    public void testInterceptClassImplementsUserSuppliedInterface() throws 
Throwable {
+        
doReturn(MockClassImplementsUserSuppliedInterface.class).when(advisedSupport).getTargetClass();
+        
doReturn(MockClassImplementsUserSuppliedInterface.class.getInterfaces()).when(advisedSupport).getProxiedInterfaces();
         assertThat(false, is(interceptor.afterMethod(enhancedInstance, null, 
new Object[] {advisedSupport}, new Class[] {Object.class}, false)));
     }
 
     @Test
-    public void testInterceptEnhanceInstanceObject() throws Throwable {
-        doReturn(MockClass.class).when(advisedSupport).getTargetClass();
+    public void testInterceptClassImplementsSpringProxy() throws Throwable {
+        // 
doReturn(MockClassImplementsSpringProxy.class).when(advisedSupport).getTargetClass();
+        // 
doReturn(MockClassImplementsSpringProxy.class.getInterfaces()).when(advisedSupport).getProxiedInterfaces();
+        assertThat(true, is(interceptor.afterMethod(enhancedInstance, null, 
new Object[] {advisedSupport}, new Class[] {Object.class}, true)));
+    }
+
+    @Test
+    public void testInterceptClassImplementsEnhancedInstance() throws 
Throwable {
+        
doReturn(MockClassImplementsEnhancedInstance.class).when(advisedSupport).getTargetClass();
+        
doReturn(MockClassImplementsEnhancedInstance.class.getInterfaces()).when(advisedSupport).getProxiedInterfaces();
         assertThat(true, is(interceptor.afterMethod(enhancedInstance, null, 
new Object[] {advisedSupport}, new Class[] {Object.class}, false)));

Review Comment:
   
https://stackoverflow.com/questions/45124660/the-bean-could-not-be-injected-as-a-type-because-it-is-a-jdk-dynamic-proxy-tha
   
   According to the answer in this SO thread, we basically should not expect 
classes that both use `@Transactional` annotation and being enhanced by 
SkyWalking Agent to use JDK Proxy.
   
   We are facing startup failures after upgrading to SkyWalking 9.4.



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