限制标记@RestOnMessage方法的条件

src/org/redkale/net/http/Rest.java

@@ -239,6 +239,10 @@ public final class Rest {
             RestOnMessage rom = method.getAnnotation(RestOnMessage.class);
             if (rom == null) continue;
             String name = rom.name();
+            if (Modifier.isFinal(method.getModifiers())) throw new RuntimeException("@RestOnMessage method can not final but (" + method + ")");
+            if (Modifier.isStatic(method.getModifiers())) throw new RuntimeException("@RestOnMessage method can not static but (" + method + ")");
+            if (method.getReturnType() != void.class) throw new RuntimeException("@RestOnMessage method must return void but (" + method + ")");
+            if (method.getExceptionTypes().length > 0) throw new RuntimeException("@RestOnMessage method can not throw exception but (" + method + ")");
             if (name.isEmpty()) throw new RuntimeException(method + " RestOnMessage.name is empty createRestWebSocketServlet");
             if (messageNames.contains(name)) throw new RuntimeException(method + " repeat RestOnMessage.name(" + name + ") createRestWebSocketServlet");
             messageNames.add(name);

src/org/redkale/net/http/RestOnMessage.java

@@ -10,7 +10,12 @@ import static java.lang.annotation.ElementType.METHOD;
 import static java.lang.annotation.RetentionPolicy.RUNTIME;
 
 /**
- * 标记在RestWebSocket的接收消息方法上，方法通常是void返回类型
+ * 标记在RestWebSocket的接收消息方法上; <br>
+ * 注意：被标记的方法必须同时符合以下条件: <br>
+ * 1、必须修饰为public
+ * 2、不能修饰为final和static
+ * 3、返回值必须是void
+ * 4、不能throws检查型异常
  *
  * <br><p>
  * 详情见: https://redkale.org