Fixed an error when inserting NPE in batches (#101)

Co-authored-by: ice <[email protected]>

Author: liaobing

agent-plugins/agent-jdbc-plugins/agent-jdbc-commons/src/main/java/cloud/erda/agent/plugin/jdbc/ExecuteMethodsInterceptor.java

@@ -47,6 +47,7 @@ public void beforeMethod(IMethodInterceptContext context, MethodInterceptResult
         if (context.getInstance() == null) return;
 
         StatementEnhanceInfos cacheObject = (StatementEnhanceInfos) ((DynamicFieldEnhancedInstance) context.getInstance()).getDynamicField();
+        if(cacheObject == null) return;
         ConnectionInfo connectInfo = cacheObject.getConnectionInfo();
 
         if (connectInfo != null) {