POI excel添加注释

HSSFSheet sheet =workBook.getSheetAt(0);
        HSSFPatriarch patr = sheet.createDrawingPatriarch();
        // 定义注释的大小和位置，详见文档
        HSSFComment comment = patr.createComment(new HSSFClientAnchor(0,0,0,0, (short)4, 2 ,(short) 6, 5));
        // 设置注释内容
        comment.setString(new HSSFRichTextString("可以在POI中添加注释！"));