[Agent] modify the method matcher of spring bean

apm-sniffer/apm-sdk-plugin/spring-plugins/spring-annotation-plugin/README.md

-# Spring Annotation Plugin (Optional)
-
-Date: 2018/01/24
-
-## Purpose
-Because of multiple project are used 
-
-Spring annotation plugin is an Optional plugin, the plugin 
-and if you want to active the plugin, you should move the plugin jar to the plugins folder.
-The plugin will intercept all public method in the classs annotation with the following annotation.
-1. `@Bean`
-2. `@Service`
-3. `@Componet`
-4. `@Repository`
-
-## Purpose
-
-

apm-sniffer/apm-sdk-plugin/spring-plugins/spring-annotation-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/annotations/AbstractSpringBeanInstrumentation.java

@@ -24,7 +24,10 @@ import org.apache.skywalking.apm.agent.core.plugin.interceptor.ConstructorInterc
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.InstanceMethodsInterceptPoint;
 import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.ClassInstanceMethodsEnhancePluginDefine;
 
+import static net.bytebuddy.matcher.ElementMatchers.isDeclaredBy;
 import static net.bytebuddy.matcher.ElementMatchers.isPublic;
+import static net.bytebuddy.matcher.ElementMatchers.named;
+import static net.bytebuddy.matcher.ElementMatchers.not;
 
 public abstract class AbstractSpringBeanInstrumentation extends ClassInstanceMethodsEnhancePluginDefine {
     private static final String INTERCEPTOR_CLASS = "org.apache.skywalking.apm.plugin.spring.annotations.SpringAnnotationInterceptor";
@@ -37,7 +40,7 @@ public abstract class AbstractSpringBeanInstrumentation extends ClassInstanceMet
         return new InstanceMethodsInterceptPoint[] {
             new InstanceMethodsInterceptPoint() {
                 @Override public ElementMatcher<MethodDescription> getMethodsMatcher() {
-                    return isPublic();
+                    return isPublic().and(not(isDeclaredBy(Object.class)).and(not(named("getSkyWalkingDynamicField"))).and(not(named("setSkyWalkingDynamicField"))));
                 }
 
                 @Override public String getMethodsInterceptor() {