使用阿里代码规范。规范代码写法

src/main/java/com/genersoft/iot/vmp/gb28181/utils/SipUtils.java

@@ -25,7 +25,9 @@ public class SipUtils {
      * */
     public static String getChannelIdFromHeader(Request request) {
         Header subject = request.getHeader("subject");
-        if (subject == null) return null;
+        if (subject == null) {
+            return null;
+        }
         return ((Subject) subject).getSubject().split(":")[0];
     }