【日常记录】EasyExcel支持时间字符串同org.joda.time.DateTime转化

我叫白小猿2024-06-14 20:11

Author：赵志乾
Date：2024-06-11
Declaration：All Right Reserved！！！

**问题：**默认情况下，EasyExcel不支持时间字符串到org.joda.time.DateTime的转化。报错信息如下：

Exception in thread "main" com.alibaba.excel.exception.ExcelDataConvertException: Converter not found, convert STRING to org.joda.time.DateTime

**解决方案：**自定义Converter，代码如下：

// step1: 自定义Converter
public class DateTimeConverter implements Converter<DateTime> {

    private static final DateTimeFormatter dateFormatter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss");

    @Override
    public Class<DateTime> supportJavaTypeKey() {
        return DateTime.class;
    }

    @Override
    public CellDataTypeEnum supportExcelTypeKey() {
        return CellDataTypeEnum.STRING;
    }

    @Override
    public DateTime convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
        return DateTime.parse(cellData.getStringValue(), dateFormatter);
    }


    @Override
    public WriteCellData<String> convertToExcelData(DateTime value, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
        return new WriteCellData<>(value.toString(dateFormatter));
    }
}



// step2: 进行读写时注册自定义Converter
EasyExcel.read(readFile, clazz, new PageReadListener<T>(result::addAll, 100))
                .registerConverter(new DateTimeConverter())
                .sheet(sheetName)
                .doRead();
EasyExcel.write(writeFile , clazz)
                .registerConverter(new DateTimeConverter())
                .sheet(sheetName)
                .doWrite(result);