diff --git a/article/anno.md b/article/anno.md
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+# anno
+
+
+
+```java
+CheckRsaSign checkRsaSign = AnnotatedElementUtils.findMergedAnnotation(method, CheckRsaSign.class);
+
+if (checkRsaSign == null) {
+    checkRsaSign = AnnotatedElementUtils.findMergedAnnotation(method.getDeclaringClass(), CheckRsaSign.class);
+}
+
+if (checkRsaSign == null || !checkRsaSign.required()) {
+    return true;
+}
+```