java如何在代码中关闭最外层的StringWriter/PrintWriter流“writer”

Question

我尝试了writer.flush()和writer.close()，但仍然使用违规警报来关闭流

StringWriter writer = new StringWriter();
ex.printStackTrace(**new PrintWriter(writer))**;
writer.flush();
writer.close();
batchStatusService.error(jobJournalDao.findByInstanceId(jobCtx.getExecutionId())
                     ,writer.toString() );