fix设备状态查询接口

mk1990

2022-06-22 4d2c36edcd43d18e30c354bfb88ed2a9ff8e5a94

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

@@ -25,6 +25,9 @@
     * */
    public static String getChannelIdFromHeader(Request request) {
        Header subject = request.getHeader("subject");
        if (subject == null) {
            return null;
        }
        return ((Subject) subject).getSubject().split(":")[0];
    }