线程没有被终止的异常的处理

  process = Runtime.getRuntime().exec(command);
            process.waitFor(); // 这个调用比较关键，就是等当前命令执行完成后再往下执行
            if (!file.exists()) {
                Ulog.error("html转pdf执行失败");
            } else {
                Ulog.info("html转pdf执行完成");
            }
        } catch (Exception e) {

InterruptedExceptions should never be ignored in the code, and simply logging the exception counts in this case as "ignoring". The throwing of the InterruptedException clears the interrupted state of the Thread, so if the exception is not handled properly the information that the thread was interrupted will be lost. Instead, InterruptedExceptions should either be rethrown - immediately or after cleaning up the method’s state - or the thread should be re-interrupted by calling Thread.interrupt() even if this is supposed to be a single-threaded application. Any other course of action risks delaying thread shutdown and loses the information that the thread was interrupted - probably without finishing its task.
Similarly, the ThreadDeath exception should also be propagated. According to its JavaDoc:
If ThreadDeath is caught by a method, it is important that it be rethrown so that the thread actually dies.

Compliant Solution
  public void run () {    try {      while (true) {        // do stuff      }    }catch (InterruptedException e) {      LOGGER.log(Level.WARN, "Interrupted!", e);      // Restore interrupted state...      Thread.currentThread().interrupt();    }  }