Fix plugin activation failure for Gateway 2.0.x by replacing invalid witness class GatewayAutoConfiguration$1 with a stable class GatewayAutoConfiguration. This resolves startup errors and ensures plugin compatibility with Spring Cloud Gateway 2.0.x.

Author: huangguangshan

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-2.0.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v20x/define/AbstractGateway200EnhancePluginDefine.java

@@ -24,7 +24,7 @@ public abstract class AbstractGateway200EnhancePluginDefine extends ClassInstanc
     @Override
     protected String[] witnessClasses() {
         return new String[] {
-            "org.springframework.cloud.gateway.config.GatewayAutoConfiguration$1"
+            "org.springframework.cloud.gateway.config.GatewayAutoConfiguration"
         };
     }
 }

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-2.0.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v20x/define/AbstractGateway200EnhancePluginDefineV2.java

@@ -24,7 +24,7 @@ public abstract class AbstractGateway200EnhancePluginDefineV2 extends ClassInsta
     @Override
     protected String[] witnessClasses() {
         return new String[] {
-            "org.springframework.cloud.gateway.config.GatewayAutoConfiguration$1"
+            "org.springframework.cloud.gateway.config.GatewayAutoConfiguration"
         };
     }
 }

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-2.0.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v20x/define/DispatcherHandlerInstrumentation.java

@@ -23,7 +23,7 @@ public class DispatcherHandlerInstrumentation extends org.apache.skywalking.apm.
     @Override
     protected String[] witnessClasses() {
         return new String[] {
-            "org.springframework.cloud.gateway.config.GatewayAutoConfiguration$1"
+            "org.springframework.cloud.gateway.config.GatewayAutoConfiguration"
         };
     }
 }

apm-sniffer/optional-plugins/optional-spring-plugins/optional-spring-cloud/gateway-2.0.x-plugin/src/main/java/org/apache/skywalking/apm/plugin/spring/cloud/gateway/v20x/define/ServerWebExchangeInstrumentation.java

@@ -23,7 +23,7 @@ public class ServerWebExchangeInstrumentation extends org.apache.skywalking.apm.
     @Override
     protected String[] witnessClasses() {
         return new String[] {
-            "org.springframework.cloud.gateway.config.GatewayAutoConfiguration$1"
+            "org.springframework.cloud.gateway.config.GatewayAutoConfiguration"
         };
     }
 }