content: package com.alibaba.excel.converters.localdatetime;
  
  import java.math.BigDecimal;
  import java.time.LocalDateTime;
  
  import com.alibaba.excel.converters.Converter;
  import com.alibaba.excel.enums.CellDataTypeEnum;
  import com.alibaba.excel.metadata.GlobalConfiguration;
  import com.alibaba.excel.metadata.data.ReadCellData;
  import com.alibaba.excel.metadata.data.WriteCellData;
  import com.alibaba.excel.metadata.property.ExcelContentProperty;
  import com.alibaba.excel.util.DateUtils;
  
  import org.apache.poi.ss.usermodel.DateUtil;
  
  /**
   * LocalDateTime and number converter
   *
   * @author Jiaju Zhuang
   */
  public class LocalDateTimeNumberConverter implements Converter<LocalDateTime> {
  
      @Override
      public Class<?> supportJavaTypeKey() {
          return LocalDateTime.class;
      }
  
      @Override
      public CellDataTypeEnum supportExcelTypeKey() {
          return CellDataTypeEnum.NUMBER;
      }
  
      @Override
      public LocalDateTime convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty,
          GlobalConfiguration globalConfiguration) {
          if (contentProperty == null || contentProperty.getDateTimeFormatProperty() == null) {
              return DateUtils.getLocalDateTime(cellData.getNumberValue().doubleValue(),
                  globalConfiguration.getUse1904windowing());
          } else {
              return DateUtils.getLocalDateTime(cellData.getNumberValue().doubleValue(),
                  contentProperty.getDateTimeFormatProperty().getUse1904windowing());
          }
      }
  
      @Override
      public WriteCellData<?> convertToExcelData(LocalDateTime value, ExcelContentProperty contentProperty,
          GlobalConfiguration globalConfiguration) {
          if (contentProperty == null || contentProperty.getDateTimeFormatProperty() == null) {
              return new WriteCellData<>(
                  BigDecimal.valueOf(DateUtil.getExcelDate(value, globalConfiguration.getUse1904windowing())));
          } else {
              return new WriteCellData<>(BigDecimal.valueOf(
                  DateUtil.getExcelDate(value, contentProperty.getDateTimeFormatProperty().getUse1904windowing())));
          }
      }
  }
  