public String getActionKey(String type, String target) {
        return new StringBuilder(256).append(type)
                .append("/").append(target).toString();
    }
Build action key as "type/target"

@param type    the type value
@param target  the target value
@return    the key
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/master/web/simplemvc/RequestDispatcher.java