dump 线程

 public static void logStackTrace(String s) {
        LOG.info(s);
        StringBuilder b = new StringBuilder();
        StackTraceElement[] e = Thread.currentThread().getStackTrace();
        for (int i = 0; i < e.length; i++) {
            b.append(e[i].toString()).append("\n");
        }
        LOG.info(b.toString());
    }