常见问题记录(一)

1、mysql生成32位的UUID:SELECT REPLACE(UUID(), '-', '');

2、Git生成秘钥(git已安装):ssh-keygen -t rsa -C "配置邮箱地址",直接回撤即可。

配置账户信息

git config --list
git config --global user.name "username"
git config --global user.email useremail@qq.com

3、java.sql.SQLException: The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized or represents more than one time zone.

在数据库驱动的url后加上serverTimezone=UTC参数。

4、解决EasyPOI导出图片存在合并单元格只填充一个单元格问题：新建一个类 EasypoiService 存放cn.afterturn.easypoi.excel.export.template.ExcelExportOfTemplateUtil代码（同样需继承BaseExportService类）
并重写父类的 createImageCell 方法，调用自定义类的方法即可 new EasyPoiService().createExcleByTemplate(templateParams, null, null, dataMap);
@Override
public void createImageCell(Cell cell, double height, String imagePath, byte[] data) throws Exception {
    if (height > (double) cell.getRow().getHeight()) {
        cell.getRow().setHeight((short) ((int) height));
    }
    //获取当前单元格所在的sheet
    Sheet sheet = cell.getRow().getSheet();
    //获取当前sheet页中的所有合并单元格信息
    List<CellRangeAddress> mergedRegions = sheet.getMergedRegions();
    //获取当前单元格的开始列号
    int firstColumn = (short) cell.getColumnIndex();
    //获取当前单元格的开始行号
    int firstRow = cell.getRow().getRowNum();
    //获取当前单元格的结束列号
    int lastColumn = (short) (cell.getColumnIndex());
    //获取当前单元格的结束行号
    int lastRow = cell.getRow().getRowNum();
    for (CellRangeAddress mergedRegion : mergedRegions) {
        //判断当前单元格是否包含合并行或和并列 当前单元格的所有行号和列号都包含在合并域内 则认为当前单元格存在合并行或和并列
        if (cell.getColumnIndex() >= mergedRegion.getFirstColumn()
                && cell.getColumnIndex() <= mergedRegion.getLastColumn()
                && cell.getRow().getRowNum() >= mergedRegion.getFirstRow()
                && cell.getRow().getRowNum() <= mergedRegion.getLastRow()) {
            //获取合并域的开始行号
            firstRow = mergedRegion.getFirstRow();
            //获取合并域的结束行号
            lastRow = mergedRegion.getLastRow();
            //获取合并域的开始列号
            firstColumn = mergedRegion.getFirstColumn();
            //获取合并域的结束列号
            lastColumn = mergedRegion.getLastColumn();
            break;
        }
    }

    Object anchor;
    if (this.type.equals(ExcelType.HSSF)) {
        anchor = new HSSFClientAnchor(0, 0, 0, 0, (short) firstColumn, firstRow, (short) (lastColumn + 1), lastRow + 1);
    } else {
        anchor = new XSSFClientAnchor(0, 0, 0, 0, (short) firstColumn, firstRow, (short) (lastColumn + 1), lastRow + 1);
    }

    if (StringUtils.isNotEmpty(imagePath)) {
        data = ImageCache.getImage(imagePath);
    }

    if (data != null) {
        PoiExcelGraphDataUtil.getDrawingPatriarch(cell.getSheet()).createPicture((ClientAnchor) anchor, cell.getSheet().getWorkbook().addPicture(data, this.getImageType(data)));
    }

}

 idea各种文件打开后页面凌乱或者看到的不是正常的代码，或报错No IDEA annotations attached to the JDK 1.8

解决方案参考：https://blog.csdn.net/zhang5690800/article/details/84291940