解决: Can not close IO.

看网上查不到这个情况记录下

		ExcelWriter excelWriter = null;
        try (
             OutputStream fos = new FileOutputStream((baseDir, csvName));
        ){
            //逻辑 ...
        } catch (Exception e){
            ("导出出错", e);
        } finally {
            if (excelWriter!=null){
                ();
            }
        }

在代码中这样些会出现资源释放的顺序问题,fos 会先于excelWriter释放,导致Can not close IO.